With the gradual improvement of the construction of underground drainage pipeline systems in China,the repair of pipeline defects has become one of the main tasks.A finite element model was established for the force analysis in the non-excavation repair of drainage pipes,and the influence of pipe,wall thickness,pipe diameter and other factors on the soil pressure of pipes was analyzed,and the differences between the soil column method and finite element calculation results were discussed.The results show that compared with the soil column method,the finite element method intuitively reflects the soil pressure at different locations on the pipe diameter and the sensi-tivity to different geological conditions and design parameters.Based on these findings,the peak earth pressure calculated by the soil column method is 1.64 times of that calculated by the finite el-ement method,and the wall thickness of the pipe liner can be saved by 21.6％by using the earth pressure calculated by the finite element method.The results of the calculation of pipeline earth pressure by finite element method can provide reference and reference for the design and specifica-tion of pipeline trenchless rehabilitation.
关键词
排水管道/土压力/非开挖修复/有限元
Key words
Drainage pipe/Earth pressure/Trenchless repair/Finite element
维普
万方数据