摘要
碎石土具有优良的工程性质,因此,了解其特性对工程建设具有重要意义.为了研究碎石土的力学性质,在考虑不同含水率及含石量的条件下开展室内碎石土大型直剪试验.试验结果表明:含水率对碎石土的抗剪强度产生削弱作用,而含石量和法向应力对碎石土的抗剪强度产生加强作用;碎石土的粘聚力和内摩擦角总体上随着含水率的增加而降低;碎石土的粘聚力随着含石量的增加则是呈现出先减小后增加再减小的趋势,内摩擦角随着含石量的增加而增加.
Gravel soil has excellent engineering properties,so it is of great significance to understand its characteristics for engineering construction.In order to study the mechanical properties of crushed stone soil,the direct shear test of large-scale crushed stone soil was carried out in laboratory,and the conditions of different moisture content and stone content were considered.The results show that the moisture content weakens the shear strength of the crushed rock,while the stone content and normal stress strengthen the shear strength of the crushed rock.The cohesion and internal friction angle of gravel soil decrease with the increase of moisture content.With the increase of stone content,the cohesion of gravel soil shows a tendency of decreasing first,then increasing and then decreasing,and the internal friction angle increases with the increase of stone content.
作者
刘康强
LIU Kangqiang(Shangrao Kexin Water Conservancy and Hydropower Construction Engineering Co.,Ltd.,Shangrao 344000,China)
出处
《江西水利科技》
2020年第6期422-427,共6页
Jiangxi Hydraulic Science & Technology
关键词
碎石土
内摩擦角
粘聚力
含水率
含石量
Gravel soil
Internal friction angle
Cohesion
Water content
Stone content
作者简介
刘康强(1982-),男,大学本科,工程师.
