CAJ | 학술논문

本研究应用含两相非混合流体之弹性孔隙介质压密理论，考虑垂直应力增量随深度变化影响情况下，推导未饱和土壤受外加荷重之作用而产生之沉陷变化过程。模拟探讨在不同饱和度条件下孔隙水压随深度之变化及压密沉陷随时间之变化量。由模拟结果得知，黏土无因次孔隙水压受应力增量影响，随着深度增加而减小；且随着时间增加，无因次孔隙水压会逐渐消散至完全消散。初始饱和度较高之黏土其达完全消散后之总沉陷量较大。
본연구응용함량상비혼합류체지탄성공극개질압밀이론，고필수직응력증량수심도변화영향정황하，추도미포화토양수외가하중지작용이산생지침함변화과정。모의탐토재불동포화도조건하공극수압수심도지변화급압밀침함수시간지변화량。유모의결과득지，점토무인차공극수압수응력증량영향，수착심도증가이감소；차수착시간증가，무인차공극수압회축점소산지완전소산。초시포화도교고지점토기체완전소산후지총침함량교대。
Based on the consolidation theory of poroelasticity, we derived a set of coupled partial differential equations to describe 1D consolidation in unsaturated porous media （containing two immiscible fluids） by considering the depth-dependent vertical stress increment due to external loading. Numerical calculations of pore water pressure with respect to depth and total settlement as a function of time were made for a clay soil as a representative example. The results show that excess pore water pressure decreases with depth. Clay bearing higher initial saturation levels showed greater total settlement.