地铁车站厚板大开洞结构受力性能影响因素分析
作者简介:
牛建辉,正高级工程师,E⁃mail: 407888838@ qq. com
作者单位:
1. 陕西建工控股集团未来城市创新科技有限公司,陕西 西安 710115; 2. 未来城市建设与管理创新联合研究中心,陕西 西安 710115; 3. 西安建筑科技大学土木工程学院,陕西 西安 710055
基金项目:
∗未 来 城 市 建 设 与 管 理 创 新 联 合 研 究 中 心 揭 榜 挂 帅 基 金(2024WHZ0221)
摘要:
利用有限元软件 ABAQUS 建立三维荷载⁃结构模型,分析支护桩围护体系与地下连续墙围护体系下支护桩入土深度、支护桩间距、地下连续墙刚度、柱间距等因素对结构受力与变形的影响. 结果表明:随着支护桩入土深度在一定范围内的增加,主体结构的内力与位移减小,超出这个范围后影响不大;结构水平位移随支护桩间距的增加而增大,但增幅在减小,最后趋于稳定;地下连续墙刚度的增加能有效减小主体结构的水平位移,减小主体结构主要受力构件的应力;柱间距的减小能有效减小底板的竖向位移及柱应力.

English:
The finite element software ABAQUS is used to establish a three⁃dimensional load⁃structuremodel to analyze the influence of supporting pile depth, supporting pile spacing, diaphram wall stiffness,column spacing on the stress and deformation of the structure under the supporting pile retaining systemand the diaphram wall retaining system. The results show that the internal force and displacement of themain structure decrease with the increase of the depth of the retaining piles in a certain range, it has littleimpact when it goes beyond this range. With the increase of supporting pile spacing, the horizontaldisplacement of the structure increases, but the magnitude of the increase decreases, and finally tends tobe stable. The increase of the stiffness of the diaphram wall can effectively reduce the lateraldisplacement of the main structure and reduce the equivalent stress of the main structural member of themain structure. The decrease of column spacing can effectively reduce the vertical displacement of thebottom plate and the maximum stress of the column.