软土地区地下构筑物上覆道路结构力学响应分析

Mechanical Response Analysis of Overlying Road Structure on Underground Structures in Soft Ground Area

通过对上海市道路隧道及轨道交通市政配套工程的调研,对地下构筑物上覆道路结构进行分类。依托大型通用有限元软件ABAQUS,建立了构筑物上覆道路的三维有限元分析模型,以路基路面应力、路表竖向位移等力学响应为考察对象,对路基模量、路基回填厚度进行了参数敏感性分析,揭示构筑物上覆道路损坏模式和病害成因。

Through the investigation of the auxiliary engineering of tunnel projects and rail transit projects in Shanghai,classification is made according to the structural characteristics of overlying road on underground structures. Based on ABAQUS,a universal finite element software,a 3D finite element model of road with underground structures is developed. Taking the structure stress of subgrade and pavement and vertical displacement of road surface as research object,sensitivity analysis of subgrade modulus and thickness are performed to reveal the damage model and disease causes of overlying road on underground structures.