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城市建设的发展使基坑的周边环境越来越复杂,因此对相关设计工作提出了更高要求。通过一个工程实例,运用传统的半平面弹性地基梁设计法及三维有限单元模拟方法,详细分析了坑边(运土车)超载以及车辆冲击荷载对既有基坑围护结构内力的不利影响,并给出了基坑在复杂环境因素作用下垮塌后的加固方案,供今后工程借鉴。
The development of urban construction makes the surrounding environment of the pit more and more complex, so put forward higher requirements for related design work. Through an engineering example, the traditional half-plane elastic foundation beam design method and the three-dimensional finite element simulation method are used to analyze in detail the negative influence of the pit side (soil transport vehicle) overloading and the vehicle impact load on the internal force of the existing foundation pit retaining structure. The reinforcement scheme of foundation pit after collapse due to complex environmental factors is given for reference of future projects.