论文部分内容阅读
随着我国基础设施建设的不断投入,高等级公路建设如火如荼,但是伴随着高等级公路的建成通车,相应的各类病害就出现了,其中桥(涵)过度段跳车造成的危害是一个较大的技术难题,广大公路行业人士和社会各界非常关注和头疼。“跳车”现象在平原地带更为普遍,因为平原地区河网纵横公路桥涵很多,施工过程中自然形成了许多分段填筑地段,为了满足桥下净空,台后路堤较高,台后填土高度多在5m以上,从理论上讲,即使台后填土达到设计要求的密实度,工后沉降将达到10~20cm。
With the continuous investment in China’s infrastructure construction, the construction of high-grade highways is in full swing. However, with the completion of high-grade highways, the corresponding types of diseases have emerged. Among them, the damage caused by over-jumping of bridges (culverts) Large technical problems, the majority of road industry professionals and all sectors of society are very concerned about and a headache. The phenomenon of “jump car ” is more common in the plains. Because there are many bridges and culverts in the plain river network, a lot of sections are naturally formed during the construction. To meet the clearance under the bridge, the embankment at the back of the bridge is higher. After filling the height more than 5m, in theory, even if the filling of the stage to meet the design requirements of the degree of density, post-construction settlement will reach 10 ~ 20cm.