一种用于饱和土的热固结试验装置及其应用

一种用于饱和土的热固结试验装置及其应用 English Version

基金项目: 国家自然科学基金项目（50879003）

School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;

摘要: 介绍一种用于饱和土圆柱形试样的热固结试验的温控固结压力室系统，可用来测定变化温度荷载和外力荷载耦合作用下试样的热固结变形量。该试验装置压力室内温度可在17℃～100℃范围内变化，同时可承受较高的等向周围固结压力（0～3 MPa）。分析了该试验装置的基本原理和测试方法。此外，针对一种典型的黏性土，研究了温度诱致的饱和黏性土的热固结变化规律，对试样的温度演化过程、孔隙水压力变化以及热体积应变的测定等问题进行了分析。
- 温度效应 /
- 饱和土 /
- 热固结 /
- 试验装置 /
- 压力室
Abstract: A test apparatus for the thermal consolidation of saturated soils is presented. It can be used to study the thermo-mechanical characteristics under combined thermal loading and mechanical loading. This apparatus accommodates variable thermal loading ranging from 17ºC to 100ºC and high confining pressure with a range of 0～3 MPa. The related experimental procedures are also discussed. For a typical saturated soil, the evolutions of temperature, pore pressure, thermal volumetric deformation induced by the thermal loading are analyzed.
- temperature effect /
- saturated soil /
- thermal consolidation /
- test apparatus /
- confining chamber