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- Title
软土深基坑桩撑支护选型分析及数值模拟研究.
- Authors
刘 芳; 罗 武; 赵永志; 朱汉新; 杨 烁
- Abstract
To accumulate the design and construction experience of deep foundation pit in soft soil area, common supporting schemes were compared based on a project with an excavation depth of 9.5 meters in Zhuhai. By using the calculation software Lizheng, the plan of bored pile with concrete internal support was selected. Furthermore, the MIDAS/GTS finite element software was used to perform an overall three-dimensional numerical simulation analysis of the foundation pit. The horizontal displacement of the supporting pile and the soil behind the pile, uplift of the pit bottom, surrounding surface settlement, axial force and bending moment of the retaining structure during the excavation were analyzed. The results showed that when the foundation pit was excavated to the bottom of the pit, the horizontal displacement curve of the supporting piles presented a "bulging" type distribution, and the surrounding ground settlement curve presented a "spoon" type distribution. Finally, comparing the calculation results of the MIDAS/GTS finite element software and the calculation software Lizheng, the horizontal displacement of the supporting pile and the axial force of the brace were in good agreement, which showed the rationality of the calculation method in this paper.
- Publication
Guangdong Architecture Civil Engineering, 2022, Vol 29, Issue 1, p14
- ISSN
1671-4563
- Publication type
Article
- DOI
10.19731/j.gdtmyjz.2022.01.004