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Applicant Pub.No.： CN 106436515 A
Applicant Pub.Dare： 2017.02.22
Applicant： China railway siyuan survey and design group co.ltd.
Inventor： Hanjie Wangxiaohui Huqiwen Guocaiguang Zhanghongming Zhangxin
Assignee： Beijing huize intellectual property agency co.， ltd
Appl.No.： 201610786311.4
Filed： 2016.08.31
Int. CI. E01C/04 （2006.01）
Patent name： The intersection structure
Abstract：
The invention is applicable to the road traffic field， it provides an intersection structure， first grounding connection section， second grounding connection section， third grounding connection section and fourth grounding connection section are in orderly arranged at the intersection between every inlet and outlet； first grounding connection section is double-layer embedded structure which is arranged on underground first layer and underground second layer； second grounding connection section is opened and embedded combination structure which is arranged between underground first layer and underground second layer； third grounding connection section is single-layer embedded structure arranged on underground second layers； fourth grounding connection section is single-layer opened structure arranged on underground second layers； upper layer and lower layer of first grounding connection section of any inlet/outlet are respectively connect with upper layers or lower layers of two adjacent first grounding connection sections through corresponding left-to-right connection type ramps. The traffic flow can be efficiently converted and reduce， occupy area is small， and unnecessary demolition is avoided.
Specification
Field of the invention
[0001]The invention is belongs to the road traffic field， and particularly relates to an intersection structure.
Technical background
[0002]In recent years， the urban scale is continuously expanded， the explosive growth in the traffic amount， and a lot of problems caused by traffic congestion are bring to the city. Expressway and main road， main road and main road intersection node are still important factor for dispersion and transformation on road traffic flow， the throat and hub of road traffic is also the root cause of traffic jams.
[0003]In order to improve the traffic jams and congestion condition of intersection road， to build an interchange type overpass is usually adopted： although this method can dramatically increase the transportation capacity， however， it covers an area of large， and the landscape effect is poor， operating noise problem and especially prominent in the city of high landscape requirements and land-scarce city. Summary of invention
[0004]The invention aims to provide an intersection structure which overcomes the defects of existing technology.
[0005]The embodiment of the invention relates to an intersection structure， it comprises four inlets and outlets which are led to the intersection， first grounding connection section， second grounding connection section， third grounding connection section and fourth grounding connection section are in orderly arranged at the intersection between every inlet and outlet；
[0006]The first grounding connection section is double-layer embedded structure which is arranged on the underground first layer and the underground second layer；
[0007]The second grounding connection section is combination structure which is arranged on an upper layer in open structure and an underground layer in embedded structure of the underground first layer and the underground second layer.
[0008]The third grounding connection section is single-layer embedded structure arranged on the underground second layer；
[0009]The fourth grounding connection section is single-layer open structure arranged on the underground second layer；
[0010]The left-turn direct connection type ramp is respectively arranged on two adjacent inlets/outlets in the intersection. Upper layer and lower layer of the first grounding connection section of anyone inlet/outlet are respectively through upper layer or lower layer of two adjacent first grounding connection sections connected the corresponding left turn direct connection ramp.
[0011]As the first embodiment of invention relates to an intersection structure， first left-turn direct connection ramp between first inlet/outlet and fourth inlet/outlet is connected with upper layer of the first grounding connection section of first inlet/outlet and lower layer of first grounding connection section of the fourth inlet/outlet；
[0012]Second left-turn direct connection ramp between first inlet/outlet and second inlet/outlet is connected with the lower layer of the first grounding connection section of the first inlet/outlet and the lower layer of the first grounding connection section of the second inlet/outlet；
[0013]Third left-turn direct connection ramp between second inlet/outlet and third inlet/outlet is connected with the upper layer of the first grounding connection section of the second inlet/outlet and the lower layer of the first grounding connection section of the third inlet/outlet； [0014]Fourth left-turn direct connection ramp between third inlet/outlet and fourth inlet/outlet is connected with the upper layer of the first grounding connection section of the third inlet/outlet and the upper layer of the first grounding connection section of the fourth inlet/outlet.
[0015]The first inlet/outlet to the intersection road section， underground first layer is one way street vehicle running direction is toward the intersection， underground second layer is one-way street vehicle running direction is far away from the intersection.
[0016]The second inlet/outlet to intersection road section， underground first layer is one-way street vehicle running direction is far away from intersection； the underground second layer is one-way street vehicle running direction is toward the intersection.
[0017]The third inlet/outlet to intersection road section， underground first layer is one-way street vehicle running direction is toward the intersection； underground second layer is one-way street vehicle running direction is far away from the intersection.
[0018]The fourth inlet/outlet to the intersection road section， underground first layer is one-way street vehicle running direction is far away from the intersection， underground second layer is a one-way street vehicle running direction is toward the intersection.
[0019]The first grounding connection sections of second inlet/outlet with opposite arranged the first grounding connection section of fourth inlet/outlet is connect through the main line section.
[0020]The main line section structure is arranged on the underground first layer and underground second layer， the underground first layer and underground second layer of the first grounding connection section are respectively connect through with the underground first layer and underground second layer of other first grounding connection section.
[0021]The underground first layer of main line section is one-way street direction from the fourth inlet/outlet to the second inlet/outlet， the underground second layer is one-way street direction from the second inlet/outlet to the fourth inlet/outlet.
[0022]The intersection structure provided by the embodiment of the invention comprises the following beneficial effects：
[0023]Firstly， the patent relates to an intersection structure can be arranged in a plane crossing road range， occupies a small area， and unnecessary demolition amount can be avoided. [0024]Secondly， the patent relates to an intersection structure comprises the ground layer and the underground structure， the construction of the ground structure is avoided， the landscape effect is good， and the noise influence range generated in the operation process is extremely small.
[0025]Thirdly， the patent relates to the traffic flow line of the passing method is clearly， and all the traffic flow lines are continuous streams.
Brief description of the drawings
[0026]In order to more clearly explain the embodiment of technical proposal for the invention， following described for embodiment or existing technology in the appended necessary drawings simple introduction. The obvious， following described drawings are only a part of embodiment for the invention； the ordinary technical personnel of same technical field will accord to the attached drawing to obtain other drawings without pay for any creation and labor.
[0027]FIG.1 is a schematic structural diagram of the intersection structure provided by the embodiment of the invention；
[0028]FIG.2 is a cross-sectional view of first grounding connection section for the intersection structure provided by the embodiment of the invention；
[0029]FIG.3 is a cross-sectional view of second grounding connection section for the intersection structure provided by the embodiment of the invention；
[0030]FIG.4 is a cross-sectional view of third grounding connection section for the intersection structure provided by the embodiment of the invention；
[0031]FIG.5 is a cross-sectional view of fourth grounding connection section for the intersection structure provided by the embodiment of the invention；
[0032]FIG.6 is ground structure arrangement schematic of the intersection structure and traffic organization diagram provided by the embodiment of the invention；
[0033]FIG.7 is underground first-layer structure arrangement of the intersection structure and traffic organization diagram provided by the embodiment of the invention；
[0034]FIG.8 is underground second-layer structure arrangement of the intersection structure and traffic organization diagram provided by the embodiment of the invention.
[0035]In the figure， 1 is first left-turn direct connect ramp， 2 is second left-turn direct connect ramp， 3 is third left-turn direct connect ramp， 4 is fourth left-turn direct connect ramp， 5 is main line section； A is first inlet/outlet， B is second inlet/outlet， C is third inlet/outlet， D is fourth inlet/outlet； A1.B1.C1 and D1 are single layer left-turn direct connect ramp of first grounding connection section； A2.B2.C2 and D2 are second grounding connection section； A3.B3.C3 and D3 are third grounding connection section； A4.B4.C4 and D4 are fourth grounding connection section. Description of implementation process
[0036]In order to illustrate the aim and technical scheme and advantages of the present invention， the following are further detailed description combined with appended drawings and embodiment. Should understand， the detailed description of embodiment only to explain the invention are not used to limit the invention.
[0037]In order to illustrate this technical proposal of invention， in the following is to explain the implementation processes details.
[0038]FIG. 1 is intersection structure flow diagram of invention， which includes the four inlets/outlets to the intersection road.
[0039]First grounding connection section， second grounding connection section， third grounding connection section and fourth grounding connection section are orderly arranged between intersection road and every inlet/outlet section.
[0040]First grounding connection section is double-layer embedded structure arranged on first underground layer and second underground layer； ?second grounding connection section is combination structure arranged on upper layer open structure and lower layer embedded structure of first underground layer and second underground layer； third grounding connection section is single-layer embedded structure arranged on underground second layers； fourth grounding connection section is single-layer open structure arranged on underground second layers；
[0041]Two adjacent inlets/outlets are respectively provided with a left-turn direct connection type ramp on intersection road， upper layer and lower layer of first grounding connection section of anyone inlet/outlet are respectively through upper layer or lower layer of two adjacent first grounding connection sections connected the corresponding left turn direct connection ramp.
[0042]First embodiment
[0043]This invention offers an intersection structure embodiment， for example fig6.fig7 and fig8 are respectively show the ground， underground first layer， underground second layer arrangement and traffic organization diagram of the intersection structure provided by the implementation processes of the invention， the fig1.fig6.fig7 and fig 8 are show the first inlet/outlet A， second inlet/outlet B， third inlet/outlet C and fourth inlet/outlet D of the intersection structure provided by the implementation processes of the invention.
[0044]A first left-turn direct connection ramp 1 between first inlet/outlet A and fourth inlet/outlet D is connected with upper layer of first grounding connection section A1 of first inlet/outlet A and lower layer of first grounding connection section D1 of fourth inlet/outlet D. [0045]A second left-turn direct connection ramp 2 between first inlet/outlet A and second inlet/outlet B is connected with lower layer of first grounding connection section A1 of first inlet/outlet A and lower layer of first grounding connection section B1 of second inlet/outlet B.
[0046]A third left-turn direct connection ramp 3 between second inlet/outlet B and third inlet/outlet C is connected with upper layer of first grounding connection section B1 of second inlet/outlet B and lower layer of first grounding connection section C1 of third inlet/outlet C.
[0047]A fourth left-turn direct connection ramp 4 between third inlet/outlet C and fourth inlet/outlet D is connected with upper layer of first grounding connection section C1 of third inlet/outlet C and upper layer of first grounding connection section D1 of fourth inlet/outlet D.
[0048]Further， the first grounding connection sections of second inlet/outlet with opposite arranged fourth inlet/outlet connect through the main line section. The main line section structure is arranged on the underground first layer and underground second layer， underground first layer and underground second layer of first grounding connection section are respectively connect through with the underground first layer and underground second layer of other first grounding connection section.
[0049]Further， the first inlet/outlet to the intersection road section， underground first layer is one-way street vehicle running direction is toward the intersection； underground second layer is one-way street vehicle running direction is far away from the intersection. Means upper layer of first grounding connection section A1 and upper layer of second grounding connection section A2 vehicle running direction are toward the intersection， lower layer of first grounding connection section A1， lower layer of second grounding connection section A2， third grounding connection section A3 and forth grounding connection section A4 vehicle running direction are toward the intersection.
[0050]The second inlet/outlet to the intersection road section， underground first layer is one-way street vehicle running direction is far away from intersection； underground second layer is one-way street vehicle running direction is toward the intersection. Means upper layer of first grounding connection section B1 and upper layer of second grounding connection section B2 vehicle running direction are far away from the intersection， lower layer of first grounding connection section B1， lower layer of second grounding connection section B2， third grounding connection section B3 and fourth grounding connection B4 vehicle running direction are toward the intersection. [0051]The third inlet/outlet to the intersection section， underground first layer is one-way street vehicle running direction is toward the intersection， underground second layer is one-way street vehicle running direction is far away from the intersection. Means upper layer of first grounding connection section C1 and upper layer of second grounding connection section C2 vehicle running direction are toward the intersection， lower layer of first grounding connection C1， lower layer of second grounding connection section C2， third grounding connection section C3 and fourth grounding connection section C4 vehicle running direction are far away from the intersection.
[0052]The fourth inlet/outlet to the intersection section， underground first layer is one-way street vehicle running direction is far away from the intersection； underground second layer is one-way street vehicle running direction is toward the intersection. Means upper layer of first grounding connection section D1 and upper layer of second grounding connection section D2 vehicle running direction are far away from the intersection， lower layer of first grounding connection section D2， third grounding connection section D3 and fourth grounding connection section D4 vehicle running direction are toward the intersection.
[0053]Underground first layer of main line section 5 is one-way street direction from fourth inlet/outlet D to second inlet/outlet B， underground second layer is one-way street direction from second inlet/outlet B to fourth inlet/outlet D.
*原文出處：中华人民共和国国家知识产权局公布的专利
Applicant Pub.Dare： 2017.02.22
Applicant： China railway siyuan survey and design group co.ltd.
Inventor： Hanjie Wangxiaohui Huqiwen Guocaiguang Zhanghongming Zhangxin
Assignee： Beijing huize intellectual property agency co.， ltd
Appl.No.： 201610786311.4
Filed： 2016.08.31
Int. CI. E01C/04 （2006.01）
Patent name： The intersection structure
Abstract：
The invention is applicable to the road traffic field， it provides an intersection structure， first grounding connection section， second grounding connection section， third grounding connection section and fourth grounding connection section are in orderly arranged at the intersection between every inlet and outlet； first grounding connection section is double-layer embedded structure which is arranged on underground first layer and underground second layer； second grounding connection section is opened and embedded combination structure which is arranged between underground first layer and underground second layer； third grounding connection section is single-layer embedded structure arranged on underground second layers； fourth grounding connection section is single-layer opened structure arranged on underground second layers； upper layer and lower layer of first grounding connection section of any inlet/outlet are respectively connect with upper layers or lower layers of two adjacent first grounding connection sections through corresponding left-to-right connection type ramps. The traffic flow can be efficiently converted and reduce， occupy area is small， and unnecessary demolition is avoided.
Specification
Field of the invention
[0001]The invention is belongs to the road traffic field， and particularly relates to an intersection structure.
Technical background
[0002]In recent years， the urban scale is continuously expanded， the explosive growth in the traffic amount， and a lot of problems caused by traffic congestion are bring to the city. Expressway and main road， main road and main road intersection node are still important factor for dispersion and transformation on road traffic flow， the throat and hub of road traffic is also the root cause of traffic jams.
[0003]In order to improve the traffic jams and congestion condition of intersection road， to build an interchange type overpass is usually adopted： although this method can dramatically increase the transportation capacity， however， it covers an area of large， and the landscape effect is poor， operating noise problem and especially prominent in the city of high landscape requirements and land-scarce city. Summary of invention
[0004]The invention aims to provide an intersection structure which overcomes the defects of existing technology.
[0005]The embodiment of the invention relates to an intersection structure， it comprises four inlets and outlets which are led to the intersection， first grounding connection section， second grounding connection section， third grounding connection section and fourth grounding connection section are in orderly arranged at the intersection between every inlet and outlet；
[0006]The first grounding connection section is double-layer embedded structure which is arranged on the underground first layer and the underground second layer；
[0007]The second grounding connection section is combination structure which is arranged on an upper layer in open structure and an underground layer in embedded structure of the underground first layer and the underground second layer.
[0008]The third grounding connection section is single-layer embedded structure arranged on the underground second layer；
[0009]The fourth grounding connection section is single-layer open structure arranged on the underground second layer；
[0010]The left-turn direct connection type ramp is respectively arranged on two adjacent inlets/outlets in the intersection. Upper layer and lower layer of the first grounding connection section of anyone inlet/outlet are respectively through upper layer or lower layer of two adjacent first grounding connection sections connected the corresponding left turn direct connection ramp.
[0011]As the first embodiment of invention relates to an intersection structure， first left-turn direct connection ramp between first inlet/outlet and fourth inlet/outlet is connected with upper layer of the first grounding connection section of first inlet/outlet and lower layer of first grounding connection section of the fourth inlet/outlet；
[0012]Second left-turn direct connection ramp between first inlet/outlet and second inlet/outlet is connected with the lower layer of the first grounding connection section of the first inlet/outlet and the lower layer of the first grounding connection section of the second inlet/outlet；
[0013]Third left-turn direct connection ramp between second inlet/outlet and third inlet/outlet is connected with the upper layer of the first grounding connection section of the second inlet/outlet and the lower layer of the first grounding connection section of the third inlet/outlet； [0014]Fourth left-turn direct connection ramp between third inlet/outlet and fourth inlet/outlet is connected with the upper layer of the first grounding connection section of the third inlet/outlet and the upper layer of the first grounding connection section of the fourth inlet/outlet.
[0015]The first inlet/outlet to the intersection road section， underground first layer is one way street vehicle running direction is toward the intersection， underground second layer is one-way street vehicle running direction is far away from the intersection.
[0016]The second inlet/outlet to intersection road section， underground first layer is one-way street vehicle running direction is far away from intersection； the underground second layer is one-way street vehicle running direction is toward the intersection.
[0017]The third inlet/outlet to intersection road section， underground first layer is one-way street vehicle running direction is toward the intersection； underground second layer is one-way street vehicle running direction is far away from the intersection.
[0018]The fourth inlet/outlet to the intersection road section， underground first layer is one-way street vehicle running direction is far away from the intersection， underground second layer is a one-way street vehicle running direction is toward the intersection.
[0019]The first grounding connection sections of second inlet/outlet with opposite arranged the first grounding connection section of fourth inlet/outlet is connect through the main line section.
[0020]The main line section structure is arranged on the underground first layer and underground second layer， the underground first layer and underground second layer of the first grounding connection section are respectively connect through with the underground first layer and underground second layer of other first grounding connection section.
[0021]The underground first layer of main line section is one-way street direction from the fourth inlet/outlet to the second inlet/outlet， the underground second layer is one-way street direction from the second inlet/outlet to the fourth inlet/outlet.
[0022]The intersection structure provided by the embodiment of the invention comprises the following beneficial effects：
[0023]Firstly， the patent relates to an intersection structure can be arranged in a plane crossing road range， occupies a small area， and unnecessary demolition amount can be avoided. [0024]Secondly， the patent relates to an intersection structure comprises the ground layer and the underground structure， the construction of the ground structure is avoided， the landscape effect is good， and the noise influence range generated in the operation process is extremely small.
[0025]Thirdly， the patent relates to the traffic flow line of the passing method is clearly， and all the traffic flow lines are continuous streams.
Brief description of the drawings
[0026]In order to more clearly explain the embodiment of technical proposal for the invention， following described for embodiment or existing technology in the appended necessary drawings simple introduction. The obvious， following described drawings are only a part of embodiment for the invention； the ordinary technical personnel of same technical field will accord to the attached drawing to obtain other drawings without pay for any creation and labor.
[0027]FIG.1 is a schematic structural diagram of the intersection structure provided by the embodiment of the invention；
[0028]FIG.2 is a cross-sectional view of first grounding connection section for the intersection structure provided by the embodiment of the invention；
[0029]FIG.3 is a cross-sectional view of second grounding connection section for the intersection structure provided by the embodiment of the invention；
[0030]FIG.4 is a cross-sectional view of third grounding connection section for the intersection structure provided by the embodiment of the invention；
[0031]FIG.5 is a cross-sectional view of fourth grounding connection section for the intersection structure provided by the embodiment of the invention；
[0032]FIG.6 is ground structure arrangement schematic of the intersection structure and traffic organization diagram provided by the embodiment of the invention；
[0033]FIG.7 is underground first-layer structure arrangement of the intersection structure and traffic organization diagram provided by the embodiment of the invention；
[0034]FIG.8 is underground second-layer structure arrangement of the intersection structure and traffic organization diagram provided by the embodiment of the invention.
[0035]In the figure， 1 is first left-turn direct connect ramp， 2 is second left-turn direct connect ramp， 3 is third left-turn direct connect ramp， 4 is fourth left-turn direct connect ramp， 5 is main line section； A is first inlet/outlet， B is second inlet/outlet， C is third inlet/outlet， D is fourth inlet/outlet； A1.B1.C1 and D1 are single layer left-turn direct connect ramp of first grounding connection section； A2.B2.C2 and D2 are second grounding connection section； A3.B3.C3 and D3 are third grounding connection section； A4.B4.C4 and D4 are fourth grounding connection section. Description of implementation process
[0036]In order to illustrate the aim and technical scheme and advantages of the present invention， the following are further detailed description combined with appended drawings and embodiment. Should understand， the detailed description of embodiment only to explain the invention are not used to limit the invention.
[0037]In order to illustrate this technical proposal of invention， in the following is to explain the implementation processes details.
[0038]FIG. 1 is intersection structure flow diagram of invention， which includes the four inlets/outlets to the intersection road.
[0039]First grounding connection section， second grounding connection section， third grounding connection section and fourth grounding connection section are orderly arranged between intersection road and every inlet/outlet section.
[0040]First grounding connection section is double-layer embedded structure arranged on first underground layer and second underground layer； ?second grounding connection section is combination structure arranged on upper layer open structure and lower layer embedded structure of first underground layer and second underground layer； third grounding connection section is single-layer embedded structure arranged on underground second layers； fourth grounding connection section is single-layer open structure arranged on underground second layers；
[0041]Two adjacent inlets/outlets are respectively provided with a left-turn direct connection type ramp on intersection road， upper layer and lower layer of first grounding connection section of anyone inlet/outlet are respectively through upper layer or lower layer of two adjacent first grounding connection sections connected the corresponding left turn direct connection ramp.
[0042]First embodiment
[0043]This invention offers an intersection structure embodiment， for example fig6.fig7 and fig8 are respectively show the ground， underground first layer， underground second layer arrangement and traffic organization diagram of the intersection structure provided by the implementation processes of the invention， the fig1.fig6.fig7 and fig 8 are show the first inlet/outlet A， second inlet/outlet B， third inlet/outlet C and fourth inlet/outlet D of the intersection structure provided by the implementation processes of the invention.
[0044]A first left-turn direct connection ramp 1 between first inlet/outlet A and fourth inlet/outlet D is connected with upper layer of first grounding connection section A1 of first inlet/outlet A and lower layer of first grounding connection section D1 of fourth inlet/outlet D. [0045]A second left-turn direct connection ramp 2 between first inlet/outlet A and second inlet/outlet B is connected with lower layer of first grounding connection section A1 of first inlet/outlet A and lower layer of first grounding connection section B1 of second inlet/outlet B.
[0046]A third left-turn direct connection ramp 3 between second inlet/outlet B and third inlet/outlet C is connected with upper layer of first grounding connection section B1 of second inlet/outlet B and lower layer of first grounding connection section C1 of third inlet/outlet C.
[0047]A fourth left-turn direct connection ramp 4 between third inlet/outlet C and fourth inlet/outlet D is connected with upper layer of first grounding connection section C1 of third inlet/outlet C and upper layer of first grounding connection section D1 of fourth inlet/outlet D.
[0048]Further， the first grounding connection sections of second inlet/outlet with opposite arranged fourth inlet/outlet connect through the main line section. The main line section structure is arranged on the underground first layer and underground second layer， underground first layer and underground second layer of first grounding connection section are respectively connect through with the underground first layer and underground second layer of other first grounding connection section.
[0049]Further， the first inlet/outlet to the intersection road section， underground first layer is one-way street vehicle running direction is toward the intersection； underground second layer is one-way street vehicle running direction is far away from the intersection. Means upper layer of first grounding connection section A1 and upper layer of second grounding connection section A2 vehicle running direction are toward the intersection， lower layer of first grounding connection section A1， lower layer of second grounding connection section A2， third grounding connection section A3 and forth grounding connection section A4 vehicle running direction are toward the intersection.
[0050]The second inlet/outlet to the intersection road section， underground first layer is one-way street vehicle running direction is far away from intersection； underground second layer is one-way street vehicle running direction is toward the intersection. Means upper layer of first grounding connection section B1 and upper layer of second grounding connection section B2 vehicle running direction are far away from the intersection， lower layer of first grounding connection section B1， lower layer of second grounding connection section B2， third grounding connection section B3 and fourth grounding connection B4 vehicle running direction are toward the intersection. [0051]The third inlet/outlet to the intersection section， underground first layer is one-way street vehicle running direction is toward the intersection， underground second layer is one-way street vehicle running direction is far away from the intersection. Means upper layer of first grounding connection section C1 and upper layer of second grounding connection section C2 vehicle running direction are toward the intersection， lower layer of first grounding connection C1， lower layer of second grounding connection section C2， third grounding connection section C3 and fourth grounding connection section C4 vehicle running direction are far away from the intersection.
[0052]The fourth inlet/outlet to the intersection section， underground first layer is one-way street vehicle running direction is far away from the intersection； underground second layer is one-way street vehicle running direction is toward the intersection. Means upper layer of first grounding connection section D1 and upper layer of second grounding connection section D2 vehicle running direction are far away from the intersection， lower layer of first grounding connection section D2， third grounding connection section D3 and fourth grounding connection section D4 vehicle running direction are toward the intersection.
[0053]Underground first layer of main line section 5 is one-way street direction from fourth inlet/outlet D to second inlet/outlet B， underground second layer is one-way street direction from second inlet/outlet B to fourth inlet/outlet D.
*原文出處：中华人民共和国国家知识产权局公布的专利