西部探矿工程
西部探礦工程
서부탐광공정
WEST-CHINA EXPLORATION ENGINEERING
2009年
8期
156-158
,共3页
土与混凝土接触界面%改进直剪试验%含水率
土與混凝土接觸界麵%改進直剪試驗%含水率
토여혼응토접촉계면%개진직전시험%함수솔
soil-concrete structure contact surface%improved direct shear tests%water content
通过改进的大型直剪仪进行粘土自身、粘土与混凝土4个含水率3个密度共64个试样的剪切试验.研究黄土地区土与混凝土接触界面抗剪强度随土体含水率以及土体密度变化规律,得到了不同密度土体在不同含水率不同正应力下土与混凝土接触界面的剪切应力应变曲线.由曲线可知土与混凝土接触界面的抗剪强度随土体含水率的增大均呈下降趋势、随土体密度增大呈增大趋势,表明土与混凝土接触界面的抗剪强度、摩擦角、粘聚力等力学参数与土体含水率以及土体密度密切相关.
通過改進的大型直剪儀進行粘土自身、粘土與混凝土4箇含水率3箇密度共64箇試樣的剪切試驗.研究黃土地區土與混凝土接觸界麵抗剪彊度隨土體含水率以及土體密度變化規律,得到瞭不同密度土體在不同含水率不同正應力下土與混凝土接觸界麵的剪切應力應變麯線.由麯線可知土與混凝土接觸界麵的抗剪彊度隨土體含水率的增大均呈下降趨勢、隨土體密度增大呈增大趨勢,錶明土與混凝土接觸界麵的抗剪彊度、摩抆角、粘聚力等力學參數與土體含水率以及土體密度密切相關.
통과개진적대형직전의진행점토자신、점토여혼응토4개함수솔3개밀도공64개시양적전절시험.연구황토지구토여혼응토접촉계면항전강도수토체함수솔이급토체밀도변화규률,득도료불동밀도토체재불동함수솔불동정응력하토여혼응토접촉계면적전절응력응변곡선.유곡선가지토여혼응토접촉계면적항전강도수토체함수솔적증대균정하강추세、수토체밀도증대정증대추세,표명토여혼응토접촉계면적항전강도、마찰각、점취력등역학삼수여토체함수솔이급토체밀도밀절상관.
In order to learn the changing law of shear behavior of soil- concrete structure surface,an experimental study on soil-concrete structure contact surface is carried out by considering various soil water contents and various soil density. 64 specimen tests,which include soil-soil and soil-concrete contact surface,are conducted by using the improved direct shear .According to experimental data analysis,basic mechanical principles of soil-concrete structure interface are obtained. Shear strength specimen's decreases with large water content of soil and increases with large soil density. Experimental data shows that mechanical properties of soil-concrete structure contact surface,such as shear strength,cohesion force and friction angle,closely depend on soil water content and soil density.
