岩土力学2026，Vol.47Issue(2)：571-580,10.DOI:10.16285/j.rsm.2025.0127
真空预压-加热联合作用下竖井地基大变形固结模型
A large strain consolidation model of vertical drains foundation under vacuum preloading combined with heating
摘要
Abstract
A large strain nonlinear radial consolidation model RVTCS for saturated soil foundation under vacuum preloading combined with heating is developed by using piecewise-linear difference method.This model couples radial heat conduction in a soil layer with large-strain thermo-consolidation.It accounts for thermal stress and thermal expansion during consolidation,self-weight,radial and vertical seepage,time-dependent heat-source temperature,nonlinear relationships between compressibility and permeability,and rebound-recompression behavior.The model can analyze large-strain thermo-consolidation under various combinations of vacuum preloading and heating.The model is verified by large-scale vacuum preloading combined with heating consolidation test,and the RVTCS numerical solution of settlement is in good agreement with the indoor test results.The variation laws of excess pore water pressure,settlement,degree of consolidation,temperature and energy consumption under different combined conditions are deeply studied through the analysis of numerical examples.The combination of vacuum preloading and heating can significantly improve the settlement and consolidation rate of soil layer.关键词
真空预压/热固结/饱和土/大变形/数值模型Key words
vacuum preloading/thermo-consolidation/saturated soil/large strain/numerical model分类
建筑与水利引用本文复制引用
周亚东,吴松林,邢蓓琪,李玉龙..真空预压-加热联合作用下竖井地基大变形固结模型[J].岩土力学,2026,47(2):571-580,10.基金项目
国家自然科学基金(No.51608351) （No.51608351）
天津市自然科学基金(No.25JCYBJC00380).This work was supported by the National Natural Science Foundation of China(51608351)and the Natural Science Foundation of Tianjin(25JCYBJC00380). （No.25JCYBJC00380）
