In-situ monitoring and analysis of mechanical characteristics and deformation of bottom structure of tunnels

Release time:2016-03-30

Journal:Chinese Journal of Geotechnical Engineering

Key Words:tunnel; bottom structure; stress; deformation; long-term monitoring

Abstract:采用现场测试方法，对隧道底部结构的变形、仰拱混凝土和钢筋中的应力进行了长期测试和分析。受围岩释 放荷载、隧道二衬自重及上部围岩荷载以及道床设施和运营列车荷载的作用，隧道底部结构在整个施工过程中经历了 隆起—下沉—隆起—下沉的反复变化过程，仰拱混凝土及钢筋同样经历了拉—压—拉—压的反复变化过程；围岩条件 越好，隧道底部结构中的应力和变形最终值及其变化幅值越小；

Co-author:丁祖德, 杨伟超, 彭立敏, 雷明锋, 施成华

Indexed by:Unit Twenty Basic Research

Document Code:1000-4548(2012)05-0879-06

Discipline:土木工程

Volume:34

Issue:5

Page Number:879-884

ISSN No.:1000-4548

Translation or Not:no

Date of Publication:2012-05-15

Links to published journals:http://www.cnki.net/KCMS/detail/detail.aspx?QueryID=1&CurRec=3&recid=&filename=YTGC201205017&dbname=CJFD2012&dbcode=CJFQ&pr=&urlid=&yx=&uid=WEEvREcwSlJHSldSdnQ1V040ZzdENzRzYWRpNkczVysvY1JMY0FJZDdxZGF6