框剪结构—桩筏基础—岩质边坡地基共同作用影响数值分析

随着城市的快速发展，土地变得越来越稀缺，特别是对于山地城市，不得不考虑在岩质边坡上修建建筑物，因而对上部结构、岩质边坡地基与基础间的共同作用研究具有实践意义。使用有限元分析方法，分析上部结构层数、岩石强度和建筑边距对共同作用下筏板内力的影响，并与未考虑共同作用的常规设计方法进行对比。计算结果表明，考虑共同作用的筏板主应力小于常规设计，其中最大主应力由筏板中部向四周转移。随着上部结构楼层数增加，上部结构对筏板刚度的贡献加大，对筏板应力的调节作用增强，基底反力向周围扩散，筏板应力分布更加均匀。

Numerical Analysis of Interaction of Frame Shear Wall with Pile Raft Foundation and Rock Slope Subgrade

With the rapid development of the city, the land becomes more and more scarce. Especially for the mountain cities, it has to consider building the buildings on the rock slope, so it is of great practical significance to study the interaction between the rock slope foundation and the upper building. The finite element method is used to study the co-influence of the layer number of upper structure, rock strength and building distance on the internal force of pile raft foundation under the interaction, and comparisons are made with the conventional design method without considering the interaction. The calculation results show that the main stress of raft is considered to be less than conventional design, and the maximum principal stress is transferred from the center to the edge of raft. With an increasing number of superstructure floors, the contribution of the superstructure to the stiffness of the raft is increased, the adjustment of the stress of the raft is enhanced, the reverse force of the substrate diffuses around, and the stress distribution of the raft is even more uniform.