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城市交通拥挤,愈来愈成为急待解决的问题,同时,山区城市人口日益增加的问题,正引起广泛的注意。四川省自贡市为了解决城市发展的交通问题,按传统的方法设计了双洞交通隧道。每条隧洞包含5.5米宽的车道和3米宽的人行道,加上装饰层洞的净宽达8.9米,净高达7米,洞室断面为53.88米,其利用率仅达70.7%,而每条隧洞还只能行驶单车,并且人行道与车道合流,除存在交通安全问题外,人员行走还必须承受灰尘、废气和噪音的侵害。总之,使用条件不好,功能受到限制,洞室跨度大,衬砌内力大,材料消耗多,造价高。我们针对着城市发展多方面的需要和上述存在的问题,提出了一个山区城市交通综合利用的新隧道方案。
Overcrowding in cities has become an increasingly urgent problem. At the same time, the increasing urban population in mountainous areas is attracting wide attention. Zigong City, Sichuan Province In order to solve the traffic problems of urban development, according to the traditional design of the double-hole traffic tunnel. Each tunnel contains a 5.5-meter-wide lane and a 3-meter-wide sidewalk. The net width of the decorative layer hole is 8.9 meters, the net height is 7 meters and the cross-section of the cave is 53.88 meters. Its utilization rate is only 70.7% The tunnel can only run a bicycle, and the sidewalks merge with the lane, in addition to the existence of traffic safety issues, personnel walking must also withstand the dust, exhaust gas and noise violations. In short, the conditions of use is not good, the function is limited, large span span, liner lining force, material consumption, high cost. In response to the various needs of urban development and the above problems, we proposed a new tunnel scheme for comprehensive utilization of urban traffic in mountainous areas.