Settlement of piled raft foundation embedded in rock and its calculation method
HU Min-yun1, LU Yu-ke1, CHEN Xiao-yu1, ZHANG Qing-shan2, XU Xiao-bing1, ZHANG Yong1
1. Institue of Geotechnical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; 2. Zhejiang University of Technology Engineering Design Group Co., Ltd., Hangzhou 310014, China
Abstract：Based on the settlement monitoring data of two piled rafts under a twin-tower building,the settlement characteristics of piled raft foundation is examined. It is shown that the piled raft settles as a whole underloading, while the settlement of piles under individual plate, which is located outside the tower areas, is sensitive to changing of the adjacent loading and ground water level. By comparing the measurement with the calculated settlement, it is found that the measured settlements are much greater than the calculated values. Then, two influential factors are proposed, bottom sediment in pile and negative skin friction on pile, to revise the settlement calculation equation for piled raft foundation penetrating thick soft soil layers. Finally, the proposed method and the suggested parameters are checked through two real cases.
胡敏云, 陆雨珂, 陈小雨, 张庆山, 徐晓兵, 张勇. 穿越软土层嵌岩桩筏基础沉降特征与计算方法[J]. 岩土工程学报, 2019, 41(S2): 221-225.
HU Min-yun, LU Yu-ke, CHEN Xiao-yu, ZHANG Qing-shan, XU Xiao-bing, ZHANG Yong. Settlement of piled raft foundation embedded in rock and its calculation method. Chinese J. Geot. Eng., 2019, 41(S2): 221-225.
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