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本文详细地论述了开挖工程非线性有限元解法的计算步骤和基本公式,提出了如何考虑地下连续墙与土体的共同作用问题和计算连续墙内力的方法。最后对上海宝钢连铸车间地下连续墙挡土开挖工程进行了分析计算,得到的结果与实测值比较接近。同时,给出了地下连续墙的各种内力分布曲线,对于了解连续墙的受力状态有直观效果。
This paper discusses in detail the calculation steps and basic formulae of the nonlinear finite element method for excavation engineering, and proposes how to consider the joint action of underground diaphragm wall and soil and the method of calculating the internal force of continuous wall. Finally, the retaining wall excavation engineering of underground continuous wall in Shanghai Baosteel Continuous Casting Plant is analyzed and calculated. The results obtained are close to the measured values. At the same time, various internal force distribution curves of underground continuous walls are given, which have an intuitive effect on understanding the stress state of the continuous wall.