Influence of water level and insertion ratio on the deformation of ultra-large foundation pit adjacent to river

被引：1

作者：

Xu C. ^{[1
,2
]}

Chi M. ^{[1
]}

Yang K. ^{[1
,3
]}

Xue G. ^{[4
]}

Sun F. ^{[4
]}

Feng G. ^{[1
,3
]}

机构：

[1] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou

[2] Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering, East China Jiaotong University, Nanchang

[3] School of Engineering, Hangzhou City University, Hangzhou

[4] China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2023年 / 53卷 / 06期

关键词：

adjacent foundation pit; foundation pit deformation; insertion ratio; numerical simulation; river water level;

D O I：

10.3969/j.issn.1001-0505.2023.06.026

中图分类号：

学科分类号：

摘要：

To study the adverse effects of water level changes on the ultra-large foundation pit adjacent to river, taking the ultra-large foundation pit project of the Qinwang underground complex in Hangzhou City as the research background, based on the hardening-soil model with small-strain stiffness and Hooke-Brown rock constitutive model, a numerical model was established by using numerical modeling software PLAXIS. The accuracy of the numerical simulation was verified by comparing with the engineering measurement results. Based on the model, the deformation laws of foundation pit at different construction stages were analyzed, and the deformation laws of adjacent foundation pit at different water levels and different insertion depths of diaphragm wall were studied. The results show that the insertion ratio of diaphragm wall has a great influence on the lateral movement of diaphragm wall but has little effect on the surface settlement outside the pit. Both of them can be best controlled when the insertion ratio of diaphragm wall ranges from 1.6 to 2. 0. With the increase of river water level, the lateral movement of diagram wall and surface settlement increase gradually. In the case of the suspended diagram wall, the influence of river water level on the lateral movement and surface settlement of the diagram wall can be more significant. © 2023 Southeast University. All rights reserved.

引用

页码：1189 / 1198

页数：9

共 24 条

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