摘要
Abstract
A certain metro station is constructed by the method of top-down excavation. The retaining structure scheme had to partly change with the change of the profile grade of the section track. The fourth concrete bracing of the standard section had to be cancelled while the inclined struts had to be set under the third concrete bracing. In order to research the influences on the internal force and deformation of retaining structure caused by the change, the MIDAS GEN finite element software were adopted to analyze the internal force and deformation of the diaphragm wall, concrete bracing and the inclined struts. The analysis results showed that these internal force and deformation of retaining structure can all meet the requirements of deformation protection of Level I foundation pit, and so the aim of optimizing the design, shortening the construction period and saving the construction cost can be reached.关键词
地铁车站/围护结构/内力及变形/优化设计Key words
metro station/ retaining structure/ internal force and deformation/ optimal design分类
交通工程
