【摘要】 研究目的:悬臂式挡土墙是国内外常用的支挡结构,悬臂式挡土墙极限状态设计的研究,是为了考察现行规范设计该墙型的安全度并给出外部稳定性检算的极限状态设计表达式。本文通过对悬臂式挡土墙研究思路的总结和主要计算结果的分析,为该类支挡结构的极限状态设计方法研究提供思路,为规范的修编提供依据,为土压力的进一步研究提供参考。研究结论:(1)悬臂式挡土墙极限状态设计研究步骤:建立极限状态方程→计算可靠指标并确定目标可靠指标→计算分项系数及建立设计表达式;(2)悬臂式挡土墙抗滑、抗倾覆和基底应力及构件强度等可靠指标分析表明,悬臂式挡土墙整体抗滑和构件裂缝控制设计;(3)悬臂式挡土墙抗动验算可采用本文推荐的设计表达式进行设计;(4)对于悬臂式挡土墙悬臂板的结构设计,分项系数应根据土压力计算进行调整;(5)该研究结论可供悬臂式挡土墙设计参考。更多还原

【Abstract】 Research purposes;The cantilever retaining wall is a common retaining structure used at home and abroad.The research on cantilever retaining wall limit state design is to examine the safety of the wall type designed according to current specification and give the limit state design expression to the external stability for calculation.This paper has summed up the research thought of cantilever retaining wall and analyzed the main calculation results,which provides a reference for standard revision and the further study of the earth pressure.Research conclusions:(1) The research steps of cantilever retaining wall limit state design are to establish a limit state equation,calculate reliability index and determine the target reliability index,calculate partial coefficient and set up the design expression.(2) The reliability index analysis of cantilever retaining wall such as anti-sliding,anti-capsizing and stress of the basement and strength of components showed that the intensity of cantilever retaining wall can achieve integral sliding resistance and component crack control design.(3) The motion resistance calculation of cantilever retaining wall can be designed according to the design expression recommended in this paper.(4) For the structure design of cantilever plate of cantilever retaining wall,partial coefficient should be adjusted according to the earth pressure calculation.(5) The research conclusion can be used for reference in the design of cantilever retaining wall.更多还原