CAJ | 학술논문

土的抗剪强度是岩土体一项重要的物理性能指标，测量土的抗剪强度对于滑坡隐患点的监测和预防具有重要意义。提出一种装置来实现现场测量土的抗剪强度，该装置由十字板、扭矩传感器、步进电机、单片机硬件电路等结构组成。对实验装置的搭建和单片机硬件电路作了详细介绍。取杭州地区的软黏土为研究对象，用该装置对土样在不同含水率和不同正应力的条件下进行了十字板剪切试验和直剪试验；并将所得数据的数据进行分析对比。试验结果表明，当土壤含水率较低时，随着含水率的增加，土壤抗剪强度先增大后减小；而土壤抗剪强度和对土壤施加的正应力是成正比关系的。
토적항전강도시암토체일항중요적물이성능지표，측량토적항전강도대우활파은환점적감측화예방구유중요의의。제출일충장치래실현현장측량토적항전강도，해장치유십자판、뉴구전감기、보진전궤、단편궤경건전로등결구조성。대실험장치적탑건화단편궤경건전로작료상세개소。취항주지구적연점토위연구대상，용해장치대토양재불동함수솔화불동정응력적조건하진행료십자판전절시험화직전시험；병장소득수거적수거진행분석대비。시험결과표명，당토양함수솔교저시，수착함수솔적증가，토양항전강도선증대후감소；이토양항전강도화대토양시가적정응력시성정비관계적。
Soil shear strength is an important physical performance of rock and soil ,and the soil shear strength measurements has an important significance in monitoring and prevention for landslide hazard point .A device was presented for field measurement on soil shear strength , The device consists of cross board , torque sensor , stepper motor , single-chip hardware circuit and other components .The construction of experimental apparatus and the single chip microcomputer hardware circuit are introduced in detail .Sampling the soft clay in Hangzhou as the research ob-ject, the vane shear test and direct shear test under the condition of different moisture content and different stress has been done , and done the analysis and comparison of the experiment data .The experimental results show that when soil moisture content is low , with the increase of moisture content ,soil shear strength first increases then de-creases ,and soil shear strength and normal stress applied on the soil is directly proportional relationship .