市政技术2024，Vol.42Issue(8)：168-174,7.DOI:10.19922/j.1009-7767.2024.08.168
自平衡测试技术在PBA暗挖车站基桩承载力测试中的应用
Application of Self-balanced Test in the Bearing Capacity of Foundation Piles of PBA Station
胡运 1郭瑞 2祝令伟1
作者信息
- 1. 北京市建设工程质量第三检测所有限责任公司,北京 100037
- 2. 北京市市政工程研究院,北京 100037
- 折叠
摘要
Abstract
With the rapid development of rail transit construction,pile beam arch(PBA)method are applied in most of the subway stations in the core area of urban core areas.The most important thing for the station by dual-layer four-guide hole method is the construction of the middle and side piles.Under the action of the construction of the side pile beams at the upper guide-hole and station buckle,the middle pile is used as a temporary component to bear the upper structure load.Therefore,requirements for mid-pile bearing capacity are higher.The stile piles are used as permanent components of the station.The bearing capacity of the mid-pile and the side pile are related to the structural safety.In order to test whether the actual bearing capacity of the base pile meets the design requirements,a static load test is needed.The methods of traditional stacking method and anchor pile method cannot be imple-mented in the PBA dark excavation station,so the self-balanced method are applied.Selected the side pile B3 of a PBA excavation station,the load box are buried in the reinforcement cage to conduct a self-balanced base pile bear-ing capacity test to get the Q-s curve of the upper and lower piles.Finally,the bearing capacity of the pile meets the design regulations by equivalent conversion.关键词
轨道交通/PBA法/自平衡法/基桩承载力Key words
rail transit/pile beam arch(PBA)method/self-balanced method/bearing capacity of foundation pile分类
交通工程引用本文复制引用
胡运,郭瑞,祝令伟..自平衡测试技术在PBA暗挖车站基桩承载力测试中的应用[J].市政技术,2024,42(8):168-174,7.
