Design and Construction Technology of Pipe Jacking Pit in Municipal Pipeline Engineering
This paper takes a municipal pipeline project as an example to explore the design method and excavation technology of working pit in pipe jacking construction.The sewage pipe jacking pit of this project adopts rectangular support type working pit,and the design size is 8.7 m×6.1 m×8.5 m.12 m Larsen Ⅳsteel sheet pile support is used to ensure the safety of pipe jacking pit excavation.The Swedish strip method is used to calculate the overall stability of steel sheet piles,and the results show that the safety factor against overturning meets the requirements of the code.In the excavation of pipe jacking pit,it is necessary to reasonably determine the excavation sequence,do well the insertion and displacement monitoring of Larsen steel sheet pile,and create good conditions for the next pipe jacking operation.
municipal pipelinepipe jacking pitnet depthbolting and shotcrete
万方数据
维普
