论文部分内容阅读
为得到在开挖过程中围护桩受到的弯矩和侧向位移随开挖深度变化的规律,对比分析不同断面在开挖中板下土体过程中加撑与不加撑对围护桩内力和位移的影响,采用了GTS软件对中街车站PBA法开挖中板下土体进行二维分析,确定了钢支撑的间距和位置,得出了加撑后围护桩所受的最大弯矩及侧向位移都有较大幅度的减小的结论,其中最大弯矩能减少27.8%,侧向偏移最多能减少31.7%。
In order to obtain the regularity of the bending moment and lateral displacement of the retaining pile affected by the excavation depth during the excavation process, the different sections of the retaining pile Internal forces and displacements, the GTS software was used to carry out two-dimensional analysis of the soil beneath the PBA excavation of Zhongjie Station and determine the spacing and position of the steel supports. The maximum The bending moments and lateral displacements all have a significant reduction. The maximum bending moment can be reduced by 27.8% and the lateral deflection can be reduced by up to 31.7%.