山区特殊地质条件下岩质边坡地基沉降规律研究

摘要

以天津蓟县某工程住宅楼为研究对象，利用ABAQUS建立了岩质边坡地基-箱基-上部结构整体三维实体模型，研究其在不同荷载工况、岩体性质下台阶形箱基的沉降规律。结果表明：不同荷载工况作用对各阶岩质边坡地基的沉降影响很小，可以忽略不计。结合天津蓟县山区特殊地质条件下的岩层分布情况，经过实地勘察分析，得到在不同岩层倾角下的岩质边坡地基沉降规律，分析结果与实测数据基本吻合。%Based on a residential building project in Jixian county of Tianjin, a 3D entity model of the rock slope founda-tion-box foundation-superstructure and infinite element boundary are established by using ABAQUS. This study explores its settlement rules under different load cases and rock properties. The result shows that the different load conditions make a little influence on the settlement of multi-step slope. Combined with the special geological conditions of rock distribution in Jixian county, field survey and FEM analysis identify the rock slope subgrade settlement rule under the different strata dip angle. The analysis result is consistent with the empirical data.