深圳大学学报（理工版）2025，Vol.42Issue(5)：541-549,9.DOI:10.3724/SP.J.1249.2025.05541
地铁车站超大双基坑的施工工序
Construction procedures for ultra-large twin foundation pits in metro stations
摘要
Abstract
The Shenzhen Dayun Transportation Hub project includes both the main station foundation pit and the transportation core foundation pit,which are closely adjacent and excavated simultaneously.This configuration poses significant construction challenges and high safety risks.To clarify the impact of the open-cut(top-down sequential excavation)and the cover-cut(bottom-up reverse excavation)methods on foundation pit safety,four combined construction procedures were simulated using the finite element method.The analysis focused on changes in the horizontal deformation of retaining structures,vertical deformation of slabs and surrounding ground settlement.The results indicate that the procedure of"station pit by reverse excavation and transportation core pit by reverse excavation"yielded the smallest deformations retaining structures,ground settlement,vertical displacement of the middle and bottom slabs,whereas the"station pit by sequential excavation and transportation core pit by sequential excavation"procedure resulted in the largest deformations.Based on the principles of minimizing structural deformation,the recommended optimal procedure for this type of project is to adopt sequential excavation for the larger foundation pit adjacent to the viaduct and reverse excavation for the smaller foundation pit far away from the viaduct.These findings provide theoretical support for improving the safety of similar large-scale underground construction projects.关键词
地下工程/超大双基坑/数值模拟/明挖顺作法/盖挖逆作法/工序组合比选Key words
underground construction/ultra-large twin foundation pits/numerical simulation/open-cut sequential excavation/cover-cut reverse excavation/procedure combination optimization分类
建筑与水利引用本文复制引用
费建波,肖俊,周贤舜,杨朝帅..地铁车站超大双基坑的施工工序[J].深圳大学学报（理工版）,2025,42(5):541-549,9.基金项目
National Natural Science Foundation of China(52422807,52178339) （52422807,52178339）
Technology Research and Development Plan of China Railway Group Limited(cz02-Special-02) 国家自然科学基金资助项目(52422807,52178339) （cz02-Special-02）
中国中铁股份有限公司科技研究开发计划资助项目(cz02-专项-02) （cz02-专项-02）
