工程地质学报2025，Vol.33Issue(6)：2074-2083,10.DOI:10.13544/j.cnki.jeg.2024-0049
温度对饱和红黏土固结和剪切特性的影响
EFFECT OF TEMPERATURE ON THE ISOTROPIC CONSOLIDATION AND SHEAR CHARACTERISTICS OF SATURATED LATERITIC CLAY
摘要
Abstract
With the development and utilization of geothermal resources in Southwest China,temperature-induced changes in soil engineering properties have become increasingly significant.Investigating the consolidation and shear behavior of lateritic clay under varying temperatures is of strategic importance.In this study,a series of temperature-controlled triaxial consolidation and shear tests were conducted using a temperature-controlled triaxial apparatus to analyze the effects of temperature on the consolidation and shear behavior of saturated lateritic clay.The results indicate that the compression index and swelling index are essentially unaffected by temperature changes,whereas the preconsolidation pressure decreases with increasing temperature during thermal consolidation.Cooling causes lateritic clay to swell,while heating leads to contraction,though the magnitude of thermally induced volumetric strain is not positively correlated with confining pressure.Thermally induced residual pore water pressure persists after thermal consolidation and increases with higher confining pressure.During shear,the small-strain secant modulus and shear strength increase with rising temperature,which is attributed to increased cohesion.In contrast,the internal friction angle and critical state line slope show no significant changes with temperature.关键词
红黏土/温控三轴试验/温度效应/固结特性/剪切特性Key words
Lateritic clay/Temperature-controlled triaxial test/Temperature effect/Consolidation characteristic/Shear characteristic分类
建筑与水利引用本文复制引用
陈正发,许智凡,夏平心..温度对饱和红黏土固结和剪切特性的影响[J].工程地质学报,2025,33(6):2074-2083,10.基金项目
常州领军型创新人才引进培育项目(资助号:KYZ23020054),常州大学引进人才项目(资助号:ZMF23020066).This research is supported by the Changzhou Leading Innovative Talent Introduction and Cultivation Project(Grant No.KYZ23020054)and Chang-zhou University Talent Introduction Project(Grant No.ZMF23020066). （资助号:KYZ23020054）
