期刊论文

Study on Deformation Classification and Law of Diaphragm Wall of Irregular Long-Narrow Foundation Pit in Metro Station

中文

中国铁道科学

1001-4632

2019

40

4

17-26

10.3969/j.issn.1001-4632.2019.04.03

国家留学基金资助项目(201508420221) 国家自然科学基金资助项目(11602183) 湖北省高等学校省级教学研究项目(2017359) 长沙理工大学公路工程教育部重点实验室开放基金资助项目(KFJ100102) 山区桥梁与隧道工程国家重点实验室培育基地项目(CQSLBF-Y14-9)

本校为第一机构

以城市地铁典型车站为工程背景,提出将异形狭长基坑地连墙不同位置的横向变形划分为往复型、悬臂型、反弯型3种类型;基于施工实测数据,进行不同开挖深度下地铁车站异形狭长基坑地连墙变形规律研究.结果 表明:地连墙往复型变形多出现在基坑角部,其坑内、外变形都较小;悬臂型变形多出现在基坑长边中部,坑内变形最大值小于4mm,坑外变形最大值可在25 mm以上;其他位置多为反弯型变形,其坑内变形最大值大于20 mm,坑外变形最大值在25 mm以上.除往复型变形外,其他各类变形随开挖深度而增大,墙体坑内最大变形小于等于0.110％倍开挖深度,坑外最大变形小于等于0.131％倍开挖深度;开挖过程中坑外最大变形集中...

Taking a typical urban metro station as engineering background, the transverse deformation at different positions of the diaphragm wall of irregular long-narrow foundation pit was divided into 3 types: reciprocating, cantilever and reverse bending. Based on the measured data of construction, the deformation laws of diaphragm wall of irregular long-narrow foundation pit in metro station under different excavation depths were studied. Results show that the reciprocating deformation of diaphragm wall occurs mostly at the corner of foundation pit, and the deformation inside and outside the pit is ...