详情

原文传递即有洞穴对道路沉降的影响研究

论文题名：	即有洞穴对道路沉降的影响研究
关键词：	道路沉降;即有洞穴;变形机理;有限元分析
摘要：	Roadway settlement caused by either movement of the underlying surface due to previous existing mine site, cut and cover tunnel etc. are one of the common and reoccurring problems along highways, state roads, country roads, and local roads. Such incidents cause significant problems that may include lane and/or road closure, interruption to the public normal way of life, construction delays and interruption to construction schedule. This research uses FEM to examine surface and the subsurface settlement profile caused by the previous mining activity. In the analysis, the influence of the size, shape and buried depth of the hole, as well as the height of the embankment, are considered. The results of this soil models confirm the empirical solution originally proposed by Peck (1969) that the surface settlement trough conforms to the normal probability curve. Only the max settlement and inflection points were somewhat different. The measured data also confirms previous studies and field measurements by Peck (1969), O’Reilly and New (1982) and Lake et al. (1992) suggestion that i is independent of the volume loss and linearly proportional to the tunnel depth.
作者：	陆特
专业：	土木工程;岩土工程
导师：	闫澍旺
授予学位：	硕士
授予学位单位：	天津大学
学位年度：	2013
正文语种：	中文