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地下连续墙具有施工振动小、墙体刚度大、整体性好及施工速度快等优点,因而被广泛应用于深基坑开挖围护结构工程中。弧形地连墙属于空间板架结构,从经典薄壳理论着手,推导出静力平衡微分方程,提出了弧形地连墙侧位移计算的新方法。以南昌市红谷隧道东岸深基坑弧形地连墙为例,利用此新方法计算其侧位移,并与监测数据对比,探讨该方法的可行性和计算精度问题。结果表明:使用该方法来计算弧形地连墙的结果与监测结果在趋势上是一致的,且数值上相差不大,说明用这种方法来计算是可行的,并且计算跨中位置的侧位移比端部位置的更吻合实测值。
Underground diaphragm wall with a small construction, wall stiffness, good overall and construction speed, etc., which are widely used in deep excavation retaining structures. The arched ground wall belongs to the space plate structure. Starting from the classical shell theory, the static equilibrium differential equation is deduced and a new method of calculating the displacement of the curved wall is proposed. Taking the arc-shaped continuous wall of the deep foundation pit of the Honggu tunnel in Nanchang as an example, this new method is used to calculate the lateral displacement. Compared with the monitoring data, the feasibility and accuracy of this method are discussed. The results show that the method of using this method to calculate the result of wall with curved arc is in good agreement with the monitoring result and has little difference in value, which shows that it is feasible to calculate with this method, The displacement is more consistent with the measured value than the end position.