摘要
以郑州某主要采用桩锚支护形式基坑为研究对象,对基坑的坡顶水平位移、坡顶竖向位移、支护桩深层水平位移、周边建筑物的沉降进行监测,通过对监测项目的变形展开分析,探索了其发展趋势及稳定性。同时运用有限差分软件FLAC^(3D)对基坑开挖进行数值模拟,并将模拟结果与现场实测结果进行对比,结果表明模拟值和实测值在数值和变化规律上基本保持一致,支护桩的位移沿深度方向大致呈"弓"字形变化,为该支护形式下的基坑设计与施工提供一定参考。
In the construction of a foundation pit in Zhengzhou,the piles and anchors were adopted as the supporting structure of the pit. The foundation pit monitoring was targeted at issues including horizontal and vertical displacement of slope top,deep displacement of the supporting piles,and the settlement of the surrounding constructions. Through analyzing the monitored deformation data,the development trend and stability of the deformation were explored. Meanwhile,the finite differential software FLAC^（3D）was also applied here to simulate the excavation. According to the comparison of the simulation results and the field measured results,it is found that the simulated and measured values are basically consistent,and the displacements of the supporting piles present a roughbow-shaped curve in the depth direction. This study can provide some reference for the design and construction of the foundation pits with this type of supporting structures.
出处
《水利与建筑工程学报》
2015年第6期25-29,117,共6页
Journal of Water Resources and Architectural Engineering
关键词
基坑
支护结构
监测
数值模拟
foundation pit
supporting structure
monitoring
numerical simulation
