Spatial effects of deformation due to excavation in soft clay

被引：0
|
作者：
Lou C.-H. [1 ]
Xia T.-D. [1 ]
Liu N.-W. [2 ]
机构：
[1] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou
[2] School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2019年 / 41卷
关键词：
Building settlement; Deep excavation; Spatial effect; Surface settlement;
D O I：
10.11779/CJGE2019S1063
中图分类号：
学科分类号：
摘要：
The deformation due to excavation in soft clay areas has considerable spatial effects. To investigate the deformation characteristics, a large-scale deep excavation project in Wenzhou is monitored, the settlements and cracks of the ground and adjacent buildings are observed and analyzed through two directions: perpendicular to the retaining wall and paralleled to the wall, and the distribution characteristics of the ground settlement are summarized. The field measurements show that the corner has inhibition effect on the wall deflections and ground settlements. In the vertical direction, the buildings in the range of 2 He outside the excavation have large differential settlement, and the maximum angular variable reaches 1/1300. The longitudinal cracks are observed from 0.4 He to 1.2 He (the maximum excavation depth) on the parallel direction, the large rate of settlement change may damage the road or the structures. In addition, the total and differential settlements of the buildings on pile foundation are significantly smaller than those on strip foundation. © 2019, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：249 / 252
页数：3
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