非对称施工下地铁深基坑支护结构受力模拟

Force Simulation of Supporting Structure of Subway Deep Foundation Pit underAsymmetric Construction

为确保地铁车站基坑施工的安全,构建非对称有限元修正受力模型,采用围护桩侧向模拟的方式来实现支护结构受力模拟分析。最终的测试结果表明:与传统径向距离受力模拟分析法和传统坑外偏压荷载受力模拟分析法对比,非对称Biot有限元受力模拟差值较小,更加灵活、多变,具有更强的实际应用价值。

To ensure the safety of subway station excavation construction,the paper constructs an asymmetric finiten element modified stress model.The force simulation analysis of the supporting structure is realized by the way of simulation.The final test results show that compared with the traditional radial distance force simulation analysis method and the traditional eccentric load force simulation analysis method outside the pit,the asymmetric Biot finite element force simulation analysis group designed in this paper finally obtains the outer pit,is more flexible and changeable,and has a stronger practical application value.