基于分层总和法和数值模拟对某沉降地基的综合计算及预测

Comprehensive Calculation and Prediction of a Settlement Foundation Based on Layer-Wise Summation Method and Numerical Simulation

基于分层总和法和Flac3D数值模拟软件对哈尔滨某填土地基沉降变形问题进行分析,对该地基的沉降变形进行了对比计算。通过对厂区布置控制剖面,进一步分析了不同阶段的沉降时空规律。结果表明,厂区沉降分布主要受地下水深度和填土厚度影响,由西向东产生不均匀沉降,最终沉降威胁最大位置位于东北处,最大沉降达到70~80cm,厂区目前已固结60%,预计于2027年固结度达到90%。

Based on the layered summation method and Flac3 D numerical simulation software,the settlement and deformation of a certain land filling foundation in Harbin was analyzed,and the settlement and deformation of the foundation were compared.Through the control section of plant layout,the spatial and temporal law of settlement in different stages is further analyzed.The results show that the settlement distribution of the plant is mainly affected by the depth of groundwater and the thickness of soil filling,resulting in uneven settlement from the west to the east,and the maximum settlement threat is located in the northeast,with the maximum settlement reaching 70~80 cm.The plant has consolidated60%at present,and the consolidation degree is expected to reach 90%in 2027.