兰州某基坑变形监测方案设计及变形分析

Design and deformation analysis of a foundation pit deformation monitoring scheme in Lanzhou

我国近年来,高层建筑鳞次栉比,已经开始发展和利用上部空间,随着高层建筑越来越高,越来越多,基坑工程规模不断扩大,基坑工程的密度越来越大,基坑距离建筑物越来越近,基坑事故频频发生。为避免基坑工程事故,以及对周边道路和建筑物造成影响,防患于未然,基坑工程的变形监控显得十分有必要。本文对兰州某基坑的施工过程进行监测,利用实测数据绘制图表,对比分析发现基坑水平位移与竖向位移均是逐渐减小,位移变化幅度随时间减小,最终趋于稳定。

In recent years, high-rise buildings in our country have begun to develop and utilize the upper space in succession. As high-rise buildings become higher and higher, the scale of foundation pit projects is expanding, the density of foundation pit projects is increasing, the distance between foundation pit and buildings is getting closer and closer, and the accidents of foundation pit occur frequently. In order to avoid the accident of foundation pit engineering and the influence on surrounding roads and buildings, it is necessary to monitor the deformation of foundation pit engineering. In this paper, the construction process of a foundation pit in Lanzhou is monitored. Using the measured data to draw charts, the comparison analysis shows that the horizontal displacement and vertical displacement of the foundation pit are gradually reduced, the displacement variation range decreases with time, and finally tends to be stable.