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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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(4): 136-140

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

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