|Table of Contents|

Design and Practice of Partitioning of Deep Large Foundation Pits Under Complex Environment Conditions(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2021年06期
Page:
119-127
Research Field:
软土基坑设计与变形控制
Publishing date:

Info

Title:
Design and Practice of Partitioning of Deep Large Foundation Pits Under Complex Environment Conditions
Author(s):
HOU Sheng-nan1; 2;  YUE Jian-yong1; 2;  ZHOU Yan1; 2
(1. Shanghai Underground Space Engineering Design & Research Institute, East China Architecture Design & Research Institute Co., Ltd., Shanghai 200011, China; 2. Shanghai Engineering Research Center of Safety Control for Facilities Adjacent to Deep Excavations, Shanghai 200011, China)
Keywords:
deep large foundation pit;  partitioning implementation;  environmental influence;  sports building
PACS:
TU973.2
DOI:
10.19815/j.jace.2021.09041
Abstract:
In order to reduce the influence of large-scale soil unloading on the surrounding environment and strengthen the protection of the surrounding complex environment, the deep foundation pit of Shanghai Xujiahui Sports Park was reasonably designed. Based on fully considering the characteristics of metro, overpass and pipeline near foundation pit, and the complex environment of the internal and surrounding buildings of the foundation pit, the design scheme of supporting structure of foundation pit with “partitioning parallel operation + plate support + multi-strut + reasonable support change” was adopted. The design ideas and specific practices of the partitioning implementation of the foundation pit, the layout of the support and trestle, and the temporary isolation and support replacement were introduced in detail, and the rationality of the partitioning implementation of the foundation pit was analyzed through the on-site deformation monitoring. The results show that the maximum settlement deformation of the East Asian Building is about 6 mm after the baseplate completed, and the differential settlement is about 1 mm. The maximum settlement of Shanghai Stadium is about 8 mm, and the maximum differential settlement is about 2 mm. The settlement of the Shanghai Stadium transformer substation increases by about 4 mm, and the differential settlement is less than 1 mm. During the construction, although the settlements of the Shanghai Stadium transformer substation and cable tunnel increase a little, but the deformation is in the controllable range, which is far less than settlement control criterion proposed by the Shanghai Shentong Metro Group, ensuring the normal operation of the whole subway system. Reasonable partitioning implementation and technical measures can ensure the safety of foundation pit and the surrounding environment, which can provide a reference for the relevant engineering design and practice.

References:

[1] 刘国彬,王卫东.基础工程手册[M].2版.北京:中国建筑工业出版社,2009.
LIU Guo-bin,WANG Wei-dong.Excavation Engineering Manual[M].2nd ed.Beijing:China Architecture & Building Press,2009.
[2]王卫东,吴江斌,黄绍铭.上海地区建筑基坑工程的新进展与特点[J].地下空间与工程学报,2005,1(4):547-553.
WANG Wei-dong,WU Jiang-bin,HUANG Shao-ming.Recent Progress and Characteristics of Pit Foundation in Shanghai[J].Chinese Journal of Underground Space and Engineering,2005,1(4):547-553.
[3]张 庆,邹正盛,李利峰,等.基于文献计量的我国深基坑工程研究现状分析[J].工业建筑,2010,40(增):719-723.
ZHANG Qing,ZOU Zheng-sheng,LI Li-feng,et al.The Status Analysis of Deep Excavation via the Literature Metrology in China[J].Industrial Construction,2010,40(S):719-723.
[4]王卫东,李进军,徐中华.敏感环境条件下深基坑工程的设计方法[J].岩土工程学报,2008,30(增):349-354.
WANG Wei-dong,LI Jin-jun,XU Zhong-hua.Design Methods for Deep Foundation Pits in Lose Proximity to Sensitive Properties[J].Chinese Journal of Geote-chnical Engineering,2008,30(S):349-354.
[5]凌 岗.毗邻轨道交通地下线等复杂环境的深基坑施工变形控制研究[J].建筑施工,2019,41(8):1399-1400,1403.
LING Gang.Research on Deformation Control of Deep Foundation Pit Construction Adjacent to Underground Rail Transit Line and Other Complex Environments[J].Building Construction,2019,41(8):1399-1400,1403.
[6]唐梦雄,陈如桂,陈 伟.深基坑工程变形控制[M].北京:中国建筑工业出版社,2006.
TANG Meng-xiong,CHEN Ru-gui,CHEN Wei.Deformation Control of Excavation Engineering[M].Beijing:China Architecture & Building Press,2006.
[7]王建华,徐中华,陈锦剑,等.上海软土地区深基坑连续墙的变形特性浅析[J].地下空间与工程学报,2005,1(4):485-489.
WANG Jian-hua,XU Zhong-hua,CHEN Jin-jian,et al.Deformation Properties of Diaphragm Wall Due to Deep Excavation in Shanghai Soft Soil[J].Chinese Journal of Underground Space and Engineering,2005,1(4):485-489.
[8]徐中华,王建华,王卫东.软土地区采用灌注桩围护的深基坑变形性状研究[J].岩土力学,2009,30(5):1362-1366.
XU Zhong-hua,WANG Jian-hua,WANG Wei-dong.Deformation Behavior of Deep Excavations Retained by Bored Pile Wall in Soft Soil[J].Rock and Soil Mechanics,2009,30(5):1362-1366.
[9]翁其平.复杂环境条件下深基坑支护技术应用与分析[J].四川建筑科学研究,2020,46(增1):97-104.
WENG Qi-ping.Application and Analysis of Deep Foundation Pit Supporting Technology Under Complex and Sensitive Environmental Conditions[J].Sichuan Building Science,2020,46(S1):97-104.
[10]殷一弘.深厚软土地层紧邻地铁深大基坑分区设计与实践[J].岩土工程学报,2019,41(增1):129-132.
YIN Yi-hong.Design and Practice of Partitioning of Deep Large Foundation Pits Close to Subway in Thick Soft Soils[J].Chinese Journal of Geotechnical Engineering,2019,41(S1):129-132.
[11]吴西臣,徐杨青.深厚软土中超大深基坑支护设计与实践[J].岩土工程学报,2012,34(增):404-408.
WU Xi-chen,XU Yang-qing.Design and Practice of Large-scale Deep Excavations in Deep Soft Soils[J].Chinese Journal of Geotechnical Engineering,2012,34(S):404-408.
[12]刘传平,贾 坚,郑俊星.上海某复杂边界条件深大基坑工程的设计与实践[J].岩土工程学报,2010,32(增1):377-382.
LIU Chuan-ping,JIA Jian,ZHENG Jun-xing.Design and Practice of a Deep Foundation Pit with Complex Boundary Conditions in Shanghai[J].Chinese Journal of Geotechnical Engineering,2010,32(S1):377-382.
[13]胡 耘,沈 健,常林越,等.岩土工程新技术在软土地区深大地下工程中的应用[J].建筑结构,2018,48(21):109-113.
HU Yun,SHEN Jian,CHANG Lin-yue,et al.Application of New Geotechnical Technologies in Deep and Large Underground Projects in Soft Soil Area[J].Building Structure,2018,48(21):109-113.
[14]王 海,卢慈荣,张 鑫,等.软土地区多基坑及邻近地铁车站同步开挖设计方案分析[J].建筑结构,2020,50(增2):738-741.
WANG Hai,LU Ci-rong,ZHANG Xin,et al.Analysis on Design Schemes of Simultaneous Excavation of Multiple Foundation Pits and Subway Station Foundation Pits in Soft Soil Area[J].Building Structure,2020,50(S2):738-741.
[15]徐中华,宗露丹,沈 健,等.邻近地铁隧道的软土深基坑变形实测分析[J].岩土工程学报,2019,41(增1):41-44.
XU Zhong-hua,ZONG Lu-dan,SHEN Jian,et al.Deformation of a Deep Excavation Adjacent to Metro Tunnels in Soft Soils[J].Chinese Journal of Geotechnical Engineering,2019,41(S1):41-44.
[16]闫静雅.邻近运营地铁隧道的深基坑设计施工浅谈[J].岩土工程学报,2010,32(增1):234-237.
YAN Jing-ya.Design and Construction of Deep Foundation Pits Near Metro Tunnels[J].Chinese Journal of Geotechnical Engineering,2010,32(S1):234-237.
[17]谢小林,杨 科.商业开发与地铁车站同期共建深大基坑综合设计技术[J].建筑结构,2020,50(13):134-138.
XIE Xiao-lin,YANG Ke.Comprehensive Design Technology of Deep and Large Excavation of Commercial Development and Metro Station Co-construction[J].Building Structure,2020,50(13):134-138.
[18]张 娇,王卫东,李 靖,等.分区施工基坑对邻近隧道变形影响的三维有限元分析[J].建筑结构,2017,47(2):90-95.
ZHANG Jiao,WANG Wei-dong,LI Jing,et al.Three-dimensional Finite Element Analysis of the Impact of Zoned Excavation on Adjacent Tunnels[J].Building Structure,2017,47(2):90-95.
[19]施佩文.从某基坑实例探讨深大基坑对换乘运营地铁设施的保护措施[J].建筑结构,2017,47(增1):1118-1122.
SHI Pei-wen.Discussion on Protective Measures for Running Transfer Subway Nearby Deep Excavation Based on a Case Study[J].Building Structure,2017,47(S1):1118-1122.
[20]朱 刚.多地铁交会的深基坑施工技术[J].建筑施工,2019,41(12):2120-2123.
ZHU Gang.Construction Technology for Deep Foundation Pit with Multiple Metros[J].Building Construction,2019,41(12):2120-2123.
[21]卢 晓.苏州中心广场超大型地下空间基坑方案选型与研究[J].施工技术,2019,48(18):90-94.
LU Xiao.Selection and Research of Foundation Excavation Scheme for Super-large Underground Space of Suzhou Central Plaza[J].Construction Technology,2019,48(18):90-94.
[22]王志伟,秦国鹏,杨振平,等.大型深基坑分区拆换撑施工技术[J].中国港湾建设,2019,39(7):28-32.
WANG Zhi-wei,QIN Guo-peng,YANG Zhen-ping,et al.Construction Technology of Dismantling and Replacing Bracing in Subdivision of Large Deep Foundation Pit[J].China Harbour Engineering,2019,39(7):28-32.
[23]贺 翀,金芸芸.软土地区超大规模深基坑群承压水控制[J].施工技术,2020,49(3):95-98.
HE Chong,JIN Yun-yun.Control of Confined Water in Super-scale Deep Foundation Excavation Group in Soft Soil Area[J].Construction Technology,2020,49(3):95-98.
[24]张竹庭.中心城区软土深基坑分区设计关键技术与对策[J].建筑施工,2020,49(12):2221-2223.
ZHANG Zhu-ting.Key Technologies and Countermeasures for Partition Design of Soft Soil Deep Foundation Pit in Central Urban Area[J].Building Construction,2020,42(12):2221-2223.
[25]陈 畅.敏感保护环境下大面积深基坑工程的设计与实践[J].山西建筑,2020,46(22):1-4.
CHEN Chang.Design and Application of Large-area Deep Foundation Pit in Sensitive Protective Environment[J].Shanxi Architecture,2020,46(22):1-4.

Memo

Memo:
-
Last Update: 2021-11-01