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基于大型有限元平台ABAQUS和常见基坑开挖数值模拟方法,借助脚本语言Py-thon对ABAQUS前后处理模块进行二次开发。针对不同断面形式的地铁隧道,如单圆、双圆或矩形断面,开发了邻近地铁深基坑开挖影响有限元参数化分析功能,并形成使用便捷的界面程序(GUI)。该程序能够通过控制参数自动创建几何模型、划分网格、定义荷载工况并自动获取隧道关键变形结果,从而简化基坑开挖环境影响分析流程,弥补ABAQUS在岩土工程领域专业化功能的不足,适用于工程技术人员快速评估地铁周边基坑和地铁隧道结构的安全性。
Based on the large-scale finite element platform ABAQUS and common pit excavation numerical simulation method, the ABAQUS pre- and post-processing module is redeveloped with the aid of the script language Py-thon. For the subway tunnels with different cross sections, such as single circle, double circle or rectangular section, the finite element parametric analysis function of the excavation of the deep foundation pit near the subway is developed and a convenient interface program (GUI) is formed. The program can automatically create geometric model through control parameters, divide the grid, define load conditions and automatically obtain the key deformation results of tunnel, so as to simplify the environmental impact analysis of foundation pit excavation process and make up for the lack of specialization of ABAQUS in the field of geotechnical engineering , For engineering and technical personnel to quickly assess the safety of underground tunnels and subway tunnel structures.