多支撑挡土结构考虑开挖过程计算的若干问题
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肖宏彬 张亦静
(株洲工学院土木系 412008)[提要] 多支撑挡土结构考虑开挖过程的计算方法,目前比较实用的主要有“m”法和“c”法两种。对这两种方法进行对比分析,进一步对挡土结构一土一支撑的共同作用机理进行研究;并对土压力取值,支撑预压力的影响及土弹簧模型的选择进行探讨。
[关键词] 多支撑 挡土结构 开挖过程 “m”法“c”法The fairly practical calculation method that excavating course is considered in retaining structure of multistorey bracing, at present are "m" method and "c" method. On comparative analysis to this two kinds of methods, the retaining structure-soil-bracing jointly action on mechanism is studied; and the value of soil pressure, the influence of brace pressure and the selection of soil spring model are inquired into.
Keywords: multistorey bracing; retaining structure; staged excavation; "c"method; "m"method