[1]李惠丽,唐寅伟,刘维,等.超深地连墙施工对软弱地层扰动现场试验研究[J].深圳大学学报理工版,2019,36(No.5(473-598)):584-591.[doi:10.3724/SP.J.1249.2019.05584]
 LI Huili,TANG Yinwei,LIU Wei,et al.Field measurements of disturbance of ultra-deep diaphragm wall construction to weak stratum[J].Journal of Shenzhen University Science and Engineering,2019,36(No.5(473-598)):584-591.[doi:10.3724/SP.J.1249.2019.05584]
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超深地连墙施工对软弱地层扰动现场试验研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第36卷
期数:
2019年No.5(473-598)
页码:
584-591
栏目:
土木建筑工程
出版日期:
2019-09-18

文章信息/Info

Title:
Field measurements of disturbance of ultra-deep diaphragm wall construction to weak stratum
文章编号:
201905017
作者:
李惠丽1唐寅伟2刘维1史培新1
1)苏州大学轨道交通学院,江苏苏州 215137
2)无锡地铁集团有限公司,江苏无锡 214021
Author(s):
LI Huili1 TANG Yinwei2 LIU Wei1 and SHI Peixin1
1) School of Rail Transportation, Soochow University, Suzhou 215137, Jiangsu Province, P.R.China
2) Wuxi Metro Group Co. Ltd., Wuxi 214021, Jiangsu Province, P.R.China
关键词:
岩土工程地连墙施工现场监测地层变形建筑物沉降土压力
Keywords:
geotechnical engineering diaphragm wall construction field measurement ground movement building settlement earth pressure
分类号:
TU476
DOI:
10.3724/SP.J.1249.2019.05584
文献标志码:
A
摘要:
为研究软土地层中超深地连墙施工对周边地层扰动影响,对苏州地铁5号线某车站地下连续墙施工进行现场监测研究.针对3幅相邻槽段施工,采用现场监测对施工过程中的土体侧向位移、地表沉降、分层土体沉降、周边建筑物沉降和土压力变化进行观测.发现单幅施工过程中,成槽开挖施工对地层扰动最大,地层变形显著;混凝土浇筑会对土体产生应力补偿,抑制地层变形;在混凝土硬化阶段,土体应力轻微释放,地层变形继续发展并趋于稳定.地层变形规律表明,浅层土体受扰动较大,土体变形较明显,最大土体侧向位移发生在地表,离槽段越近,沉降越明显,深层土体受到扰动则较小.相邻槽段施工对地层变形累积增加,但变化幅度较小.现场地连墙施工引起的周边建筑物沉降和倾斜均在可控范围内.
Abstract:
This study investigates ground movement based on field instrumentation during the installation of deep concrete diaphragm wall panels for the Suzhou Metro Line 5 Project. The field measurements, including lateral ground movement, ground surface settlement, subsurface settlement, adjacent building settlement, soil and hydrostatic pressure, are conducted during the installation of three adjacent wall panels. The measurement shows that the construction disturbs the ground significantly at shallow depth and generates relatively large lateral movement. The maximum lateral ground movement occurs at the ground surface and the movement decreases along depth. The trench excavation releases ground stress and generates the major portion of the lateral ground movement. The trench concreting reduces the lateral ground movement by compensating the ground stress release. The concrete hardening releases the ground stress again but on a much smaller magnitude and the soil displacement tends to be stabilized. The installation of adjacent panels contributes to the ground movement which occurs along a line perpendicular to the centerline of the previously installed panel, but the contribution is relatively small. The settlement and inclination of surrounding buildings caused by the panel installation are relatively small and controllable.

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备注/Memo

备注/Memo:
Received:2019-03-25;Accepted:2019-07-24
Foundation:National Natural Science Foundation of China(51778386); Science and Technology Development Plans of Suzhou (SS201831); Open Fund of MOE Key Laboratory of Soft Soil and Geoenvironmental Engineering (Zhejiang University) (2017P05)
Corresponding author:Associate professor LIU Wei. E-mail: ggoulmmeng@suda.edu.cn
Citation:LI Huili, TANG Yinwei, LIU Wei, et al. Field measurements of disturbance of ultra-deep diaphragm wall construction to weak stratum[J]. Journal of Shenzhen University Science and Engineering, 2019, 36(5): 584-591.(in Chinese)
基金项目:国家自然科学基金资助项目(51778386);苏州市科技发展计划(民生科技)资助项目(SS201831);软弱土与环境土工教育部重点实验室(浙江大学)开放基金资助项目(2017P05)
作者简介:李惠丽(1995—),苏州大学硕士研究生.研究方向:岩土与地下工程.E-mail:20184246018@stu.suda.edu.cn
引文:李惠丽,唐寅伟,刘维,等.超深地连墙施工对软弱地层扰动现场试验研究[J]. 深圳大学学报理工版,2019,36(5):584-591.
更新日期/Last Update: 2019-09-30