Design method of redundancy of brace-anchor sharing supporting based on cooperative deformation

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Liu, Jun-Yan^1,2 ; Li, Bing^1,2 ; Liu, Yan^1,2 ; Cai, Shan-Bing^3

School of Civil Engineering and Architecture, University of Jinan, Jinan

250022, China^1

Eng. Technol. Res. Ctr. for Urban Underground Eng. Supporting and Risk Monitoring of Shandong Prov., Jinan

250022, China^2

Geological Exploration Institute of Shandong Zhengyuan, Jinan

250022, China^3

关键词: Anchor distributions;    Cooperative response;    Field monitoring data;    Local reinforcements;    Parameter calculation;    Structural component;    Theoretical research;    Underground engineering;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012202/pdf
DOI  :  10.1088/1755-1315/94/1/012202

来源: IOP

【 摘 要 】

Because of the complicated environment requirement, the support form of foundation pit is diversified, and the brace-anchor sharing support is widely used. However, the research on the force deformation characteristics and the related aspects of the cooperative response of the brace-anchor sharing support is insufficient. The application of redundancy theory in structural engineering has been more mature, but there is little theoretical research on redundancy theory in underground engineering. Based on the idea of collaborative deformation, the paper calculates the ratio of the redundancy degree of the cooperative deformation by using the local reinforcement design method and the structural component redundancy parameter calculation formula based on Frangopol. Combined with the engineering case, through the calculation of the ratio of cooperative deformation redundancy in the joint of brace-anchor sharing support. This paper explores the optimal anchor distribution form under the condition of cooperative deformation, and through the analysis and research of displacement field and stress field, the results of the collaborative deformation are validated by comparing the field monitoring data. It provides theoretical basis for the design of this kind of foundation pit in the future.