铁道科学与工程学报
鐵道科學與工程學報
철도과학여공정학보
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
2014年
4期
63-67
,共5页
韩铠屹%刘群%宋晓东
韓鎧屹%劉群%宋曉東
한개흘%류군%송효동
含水率%细颗粒含量%粗粒土%单轴试验%蠕变特性
含水率%細顆粒含量%粗粒土%單軸試驗%蠕變特性
함수솔%세과립함량%조립토%단축시험%연변특성
moisture content%fine particle content%coarse-grained soil%uniaxial test%creep property
通过单轴压缩蠕变试验研究含水率以及颗粒组成对粗粒土蠕变的影响规律,分析砂质板岩粗粒土在不同影响因素(含水状态、颗粒组成)下的蠕变特性,并基于与试验结果相符的H-K蠕变模型,探讨含水率、细颗粒含量、应力与蠕变参数之间的关系。研究结果表明:含水率、细颗粒含量均为影响粗粒土蠕变特性的重要因素,提出通过使用干燥或饱和含水态的粗粒土填料以及使用细颗粒含量为30%的粗粒土填料的途径来控制路堤的长期沉降。
通過單軸壓縮蠕變試驗研究含水率以及顆粒組成對粗粒土蠕變的影響規律,分析砂質闆巖粗粒土在不同影響因素(含水狀態、顆粒組成)下的蠕變特性,併基于與試驗結果相符的H-K蠕變模型,探討含水率、細顆粒含量、應力與蠕變參數之間的關繫。研究結果錶明:含水率、細顆粒含量均為影響粗粒土蠕變特性的重要因素,提齣通過使用榦燥或飽和含水態的粗粒土填料以及使用細顆粒含量為30%的粗粒土填料的途徑來控製路隄的長期沉降。
통과단축압축연변시험연구함수솔이급과립조성대조립토연변적영향규률,분석사질판암조립토재불동영향인소(함수상태、과립조성)하적연변특성,병기우여시험결과상부적H-K연변모형,탐토함수솔、세과립함량、응력여연변삼수지간적관계。연구결과표명:함수솔、세과립함량균위영향조립토연변특성적중요인소,제출통과사용간조혹포화함수태적조립토전료이급사용세과립함량위30%적조립토전료적도경래공제로제적장기침강。
Uniaxial compression creep test was utilized to analyze the effect of moisture conditions and different particle grading components on creep property of sandy slate coarse-grained soil,and investigate the relations between moisture contents or fine particle contents and creep parameters on the basis of H -K Creep Model which is in agreement with the experimental results.The research results show that moisture content and fine par-ticle content are the important factors that affect creep property of sandy slate coarse-grained soil and it is pro-posed to use dry or saturated coarse-grained soil and fine particle content accounting for 30% coarse-grained soil filler to decrease long-term settlement of embankment.