论文部分内容阅读
箱涵顶进技术多用于穿越铁路、机场等建筑物,随着工程建设的需要,浅覆土、大断面的箱涵下穿既建道路的应用也越来越多。针对超宽断面箱涵在顶进施工过程中容易出现的“扎头”和“抬头”现象,结合某市快速路下穿通道工程实例,基于箱涵顶进施工的技术特点,采用对既建线路加固技术、高精度顶级技术以及降阻顶进技术,浅析了这三种技术的施工要点,促进箱涵顶进施工技术在道路下穿通道中的推广应用。
Box culvert jacking technology used for crossing the railway, airport and other buildings, with the needs of construction, shallow overburden, large cross-section culvert under the existing roads are also more and more applications. In view of the phenomenon of “tie head” and “head rise” appearing in the jacking construction of super wide section box culvert, combined with the engineering example of the expressway underpassing in a certain city, based on the technical characteristics of box culvert jacking construction, Adopting the existing technology of reinforcing the existing line, the top technology of high precision and the technology of lowering the resistance and heading, the construction essentials of these three technologies are briefly analyzed to promote the popularization and application of the culvert construction technology in the underpass of the road.