深基坑桩锚支护变形模拟分析

以济南市省会文化艺术中心工程为背景,用FLAC3D数值模拟软件,对深基坑变形作了模拟分析.将模拟数据与滑动式测斜仪测得的变形监测数据进行对比分析,得出结论：在桩-锚支护体系下,基坑最大水平位移随开挖下移,最终出现在桩体的中部,靠近第二道锚索,模拟变形曲线和测斜仪监测结果吻合良好;锚索轴力最大值在端头,且中间排锚索轴力小于上下两排.

Analysis for Deformation Simulation of Pile-anchor Supporting Structure in Deep Excavation

By using FLAC3D numerical simulation software,this paper aimed at a simulation analysis on deformation of deep excavations in the engineering project of Jinan Provincial Culture and Art Center. The eontrastive analysis was made between numerical data and monitoring data tested by the sliding inclinometer. The findings include the follo- wing：under the pile-anchor supporting system, the maximum horizontal displacement of the excavation is moving down with the digging process and ends up in the middle of the pile where the second anchor cable is set, which proves that the curve of simulated deformation is consistent with the inclinometer monitoring data. The maximum axial force of anchor cables takes place on the top and the axial force of the middle row is smaller than that of others.