市政技术2024，Vol.42Issue(1)：147-153,224,8.DOI:10.19922/j.1009-7767.2024.01.147
平行叠落地铁区间施工地表沉降特征研究
Characteristic Study on Surface Settlement of Construction of Parallel Stacking Subway Intervals
王祐菁 1刘飞1
作者信息
- 1. 北京建筑大学土木与交通工程学院,北京 100044
- 折叠
摘要
Abstract
The north side of a subway interval excavated section project in Beijing is a single-span double-layer vault straight wall section constructed by PBA method;The south side is a double-hole stacked-fall standard section,which the upper layer is constructed by CRD method,and the lower layer is constructed by step method.Therefore,numerical simulation analysis was carried out by finite element software to investigate the effects of subway interval construction on longitudinal and transverse surface settlements under four different construction sequences,namely,"small before large"+"down before up","small before large"+"up before down","large before small"+"down before up",and"large before small"+"up before down".The results show that the surface settlement caused by the construction sequence of"big first,then small"+"first down,then up"is the smallest in this project.This research result can provide reference for the control of surface deformation in similar projects.关键词
地铁区间/平行叠落/工序/数值模拟/地表沉降/多工法Key words
subway interval/parallel stacking/process/numerical simulation/surface settlement/multi-tasking method分类
交通工程引用本文复制引用
王祐菁,刘飞..平行叠落地铁区间施工地表沉降特征研究[J].市政技术,2024,42(1):147-153,224,8.
