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根据侧移土中桩的Poulos理论编制电算程序,用以求得澳门南方大厦基坑开挖中软土流动形成的曲桩侧向位移与弯矩分布。将最大计算弯矩与分析现场曲桩载荷试验以及实验室测定的桩段破坏弯矩所得的极限弯矩相比较,从而作出曲桩折断判据。曲桩竖向承载力分析程序是按处于弹性介质中的曲梁微分方程(以差分形式表示)编制的;介质中的水平力引起某点的水平位移由Mindlin方程给出。以荷载传递法调配得到出事桩基中各类基桩的荷载-沉降曲线后,根据非线性的群桩整体分析选定桩基加固的补救性措施。
According to the Poulos theory of piles in laterally moving soils, a computer program was developed to obtain the lateral displacement and bending moment distribution of the flexural piles formed during the excavation of the foundation pit in the South Tower of Macau. The bending moment of the bending pile was calculated by comparing the maximum calculated bending moment with the bending moment obtained from the analysis of the bending load test in the field and the failure moment of the pile in the laboratory. The analysis program for the vertical bearing capacity of curved piles is based on the curved beam differential equation (in differential form) in the elastic medium. The horizontal displacement caused by the horizontal force in the medium is given by the Mindlin equation. After the load-settlement curve of all kinds of foundation piles in the accident pile foundation was obtained by load transfer method, the remedial measures for the reinforcement of the pile foundation were selected according to the nonlinear integral analysis of the pile group.