深基坑开挖引起的周边地表变形预测

Prescience of surrounding surface deformation in deep excavation

应用模糊数学理论推导出的Fuzzy测度模型,根据实际基坑的情况对地表下沉公式积分范围进行了修正,使用Matlab语言编写了预测地表下沉及水平位移变形的程序.对深基坑开挖引起地表下沉及水平位移变形量进行预测的结果表明:该模型对基坑周围土体变形量的预测结果与实测情况吻合较好,所获得的理论公式可应用于深基坑工程开挖引起的地表移动变形预测.

Based on the fuzzy measures theory and the measured data, a fundamental theoretical model of ground surface movement due to deep excavation is established. According to the actual situation of foundation pit, the integral range of ground subsidence is corrected. And the prediction program of predic- tion for ground movement is given by Matlab. The agreement of the theoretical results with the field meas- urements shows that the model is satisfactory and the formula obtained are valid and thus can be effectively used for predicting the ground movements due to deep excavation.