Study on Safety Design Methods of Parallel Support Systems for Deep Foundation Excavation

XIE Gaojian; XIAO Zhaoran; ZHANG Wencui; LI Zhiqiang

doi:10.13204/j.gyjzG22062002

Volume 53 Issue 4

Apr. 2023

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XIE Gaojian, XIAO Zhaoran, ZHANG Wencui, LI Zhiqiang. Study on Safety Design Methods of Parallel Support Systems for Deep Foundation Excavation[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 136-140. doi: 10.13204/j.gyjzG22062002

Citation:

XIE Gaojian, XIAO Zhaoran, ZHANG Wencui, LI Zhiqiang. Study on Safety Design Methods of Parallel Support Systems for Deep Foundation Excavation[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 136-140. doi: 10.13204/j.gyjzG22062002

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Study on Safety Design Methods of Parallel Support Systems for Deep Foundation Excavation

doi: 10.13204/j.gyjzG22062002

1. School of Civil Engineering, Henan University of Technology, Zhengzhou 450052, China;
2. Guangxi Yicheng Blueprint Technology Co., Ltd., Nanning 530002, China

Received Date: 2022-06-20
Available Online: 2023-07-01

Abstract

Abstract

In order to solve the problem of service safety of parallel support systems in deep foundation excavation, the failure mode of concrete supports in parallel support systems in deep excavation engineering was analyzed. Taking the deep excavation project of Xiaoying Station in Zhengzhou Metro Line 8 as the object, based on the structural reliability analysis theory and failure probability theory, the safety state model of parallel support systems in deep excavation was constructed, and the design of concrete supports was "optimized by decore". The problem that measured values of concrete supports were far beyond theoretical values was effectively solved. Combined with the in-situ experiments, it was indicated that the factors influencing the failure probability of parallel support systems were related to supports with higher probability weight in support systems. A number of materials used in larger and smaller concrete support sections after decore optimization was reduced by about 8.5% and 11.9% respectively, and the construction cost was greatly saved.
- parallel support system,
- structural reliability analysis,
- failure probability,
- security level,
- serviceability,
- decore optimization

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References(16)

References

[1]	閤超,刘秀珍.某深基坑安全开挖引起邻近建筑物较大沉降的实例分析[J].岩土工程学报,2014,36(增刊2):479-482.
[2]	邹建文,徐伟,吴加云.深基坑混凝土支撑受剪性能研究[J].岩土工程学报,2008,30(增刊1):257-259.
[3]	张光建,姚小波,胡瑾.地铁换乘车站基坑支撑轴力监测与数值模拟[J].岩土工程学报,2014,36(增刊2):455-459.
[4]	刘树亚,潘晓明,欧阳蓉,等.用钢筋混凝土支撑代替钢支撑的深基坑支护特性研究[J].岩土工程学报,2012,34(增刊1):309-314.
[5]	袁海庆,张光文.排桩-内支撑深基坑支护体系的等效转换与简化计算[J].岩土工程学报,2011,33(5):725-729.
[6]	罗志琪.深基坑工程开口型板式支护的设计与工程应用[J].岩土工程学报,2010,32(增刊1):312-316.
[7]	秦会来,黄俊,李奇志,等.深厚淤泥地层深基坑变形影响因素分析[J].岩土工程学报,2021,43(增刊2):23-26.
[8]	陈晓勇,高广运,李伟.深基坑支护结构的风险分析[J].地下空间与工程学报,2009,5(增刊2):1794-1798.
[9]	边亦海,黄宏伟.SMW工法支护结构失效概率的模糊事故树分析[J].岩土工程学报,2006(5):664-668.
[10]	周瑞忠,邱高翔.基于BP网络的深基坑支护位移反分析[J].土木工程学报,2001(6):60-62,73.
[11]	杨林德,钟才根,曾进伦.基坑支护位移和安全性监测的动态预报[J].土木工程学报,1999(2):9-13.
[12]	史世雍. 软土地区深基坑支护体系安全性状动态分析[D].上海:同济大学,2007.
[13]	李国强,黄宏伟,吴迅,等.工程结构荷载与可靠度设计原理[M]. 4版.北京:中国建筑工业出版社,2016.
[14]	东南大学天津大学同济大学.混凝土结构设计原理[M]. 4版.北京:中国建筑工业出版社,2016.
[15]	朱元青.人工智能在深基坑支护工程中的应用[J].地下空间,2001,21(5):488-491 ,590.
[16]	姜忻良,宗金辉,孙良涛.天津某深基坑工程施工监测及数值模拟分析[J].土木工程学报,2007(2):79-84,103.