地下车库覆土压力分布及影响因素研究

摘要

将覆土按均布面荷载考虑不能准确反映作用在地下车库顶面的实际覆土荷载的大小与分布,二者存在明显差异.采用有限元方法,对地下车库顶面覆土压力的分布规律及其影响因素进行了研究.结果表明,覆土压力呈非均匀分布,其大小及分布受到覆土厚度、覆土性质、结构刚度、土-结构接触面摩擦系数等因素的影响.%The actual size and distribution of earth pressure on the underground garage was not accurately reflected by uniform load,there were significant differences between them.FEA is adopted to analyze the size and distribution of earth pressure on underground garage.It is shown that the earth pressure on the top of the garage has a non-uniform distribution.Additionally,the earth pressure on the top of the underground garage are influenced by the height of the fill,structural stiffness,soil properties and friction coefficien of contact surface.