乐滩水库引水灌区一期工程总干渠跨奇庚河倒虹吸进出口建筑物有限元分析

Finite element analysis of inverted siphon inlet and outlet structures at position of trunk canal crossing Qigeng River for Letan Reservoir Irrigation Zone 1st-stage Project

乐滩水库引水灌区一期工程总干渠经过奇庚河,采用倒虹吸型式交叉穿越。由于倒虹吸进出口连接段较高(高度14.67 m),且基础均置于覆盖层软土层,地基承载力低。奇庚河倒虹吸进出口采用整体矩形结构型式,避免采用高挡土墙设计,改善了结构受力。

The trunk canal of Letan Reservoir Irrigation Zone 1st-stage Project was designed to cross the Qigeng River. Inverted siphon structures were designed for the crossing. With a height of 14.67m, the inlet and outlet sections fall on soft overburden soil with low foundation bearing capacity,so structural stability is the key points of design. Integrated rectangular structures were designed for the inlet and outlet to avoid high earth retaining wall as well as improve structural force conditions.