Comparison and Selection of Ultra-Large Span Trusteeship Bridge Schemes for Long-Distance Water Conveyance Pipeline Projects
To transport water across ditches, rivers, and valleys, truss crossing, arch bridge crossing, suspension bridge crossing, and cable-stayed bridge crossing are commonly used. However, each of these crossing methods has its own set of challenges. This paper introduces the use of a variable-section continuous steel box girder bridge for the long-distance water conveyance pipeline in the Zhundong Water Supply Project. With its maximum single-span length of 150 meters, it is the largest trusteeship structure of its kind in China. The design load is for a 1. 8-meter diameter pressurized water pipe, with the per-meter weight of the pipe and full water load similar to that of a three-lane fully loaded automobile. A comprehensive analysis is conducted on four types of bridges: suspension bridges, arch bridges, concrete continuous beam bridges, and variable-section continuous steel box girder bridges, considering construction period, cost, seismic, and wind resistance. Ultimately, an 80m+150m+80m variable-section continuous steel box girder bridge, which is least affected in winter (shortest construction period) and lowest in cost, was selected. The water pipeline bridge features large span, narrow bridge deck, and significant wind load. The design concepts, calculation methods, and construction schemes introduced in this article can provide references for similar projects.
long-distance water conveyance pipelineultra-large spantrusteeship bridgescheme comparison and selection
万方数据
维普
