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原文传递 STUDY ON CRACK OPENING DISPLACEMENT OF SHIELD TUNNEL IN LONGITUDINAL DIRECTION

题名：	STUDY ON CRACK OPENING DISPLACEMENT OF SHIELD TUNNEL IN LONGITUDINAL DIRECTION
正文语种：	中文
作者：	Zhiqiang ZHANG Chuan HE Maiqing QIAO
作者单位：	epartment of Underground Engineering,Southwest Jiaotong University, hengdu 610031,Sichuan, hina
关键词：	shield tunnel longitudinal deformation COD(crack opening displacement) 3D numerical analyses
摘要：	Compared with the case of the cast in situ concrete with a uniform bending rigidity of NATM tunnel,the rigidity of shield tunnel lining composed of segments connected by bolts in longitudinal direction and transverse direction are quite different.The increasing attention is focused on the likelihood of water leakage caused by the longitudinal excessive deformation of undersea tunnel i.e.excessive crack opening displacement in view of its far less longitudinal rigidity.In this paper,the 3D numerical analyses are firstly conducted to investigate the distribution ranges of longitudinal uneven deformation.Based on this,taking the differential settlements as displacement boundary,the crack opening displacements of the aimed shield tunnel in longitudinal direction are studied by establishing longitudinal shell-spring-contact model.The results provide a reference for the lining longitudinal design of Nanjing highway tunnel across Yangtze River.
会议日期：	20090916
会议举办地点：	成都
会议名称：	第五届中日盾构隧道技术交流会
出版日期：	2009-09-16
母体文献：	第五届中日盾构隧道技术交流会论文集