摘要
从理论上推导出了加筋土强度的数学表达式,分析了土的黏聚力与土筋界面参数变化对加筋土强度的影响,研究表明,当发生拉断型破坏时,黏聚力的减少比筋材提供的拉力占优势的情况下,加筋土的强度会低于素土的强度;当发生黏着型破坏时,黏聚力的减少比筋材提供的摩阻力占优势的情况下,加筋土的强度也会低于素土的强度。加筋土强度的降低程度与筋材在土中形成的夹层、土筋界面透水性、加筋间距有关。
The mathematical expression of the strength of the reinforced soil is theoretically deduced,and the influence of the soil cohesion and the soil-reinforcement interface parameters on the strength of reinforced soil is analyzed.It is shown that when the reinforced soil is subjected to the tensile load up to failure,the cohesive force is reduced to an extent as compared with the tensile force provided by the reinforcement,the strength of the reinforced soil will be less than that of the plain soil;when the reinforced soil is adhesively damaged,the strength of the reinforced soil is less than that of the plain soil when the cohesion are reduced to an extent as compared with the friction provided by the reinforcement.The degree of reduction of the strength of the reinforced soil is related closely to the degree of the interlayer formed by the reinforced material in the soil,the permeability of the soil-reinforcement interface,the spacing of the reinforcement and the indirect reinforcement range.
作者
雷胜友
惠会清
LEI Shengyou;HUI Huiqing(School of Highway,Chang’an University,Xi’an 710064,China;School of Science,Chang’an University,Xi’an 710064,China)
出处
《力学与实践》
北大核心
2019年第2期184-187,183,共5页
Mechanics in Engineering
基金
陕西省自然科学基金(2001C01)
地质灾害防治与地质环境保护国家重点实验室开放基金(GZ2005-03)
国家级大学生创新创业训练计划(201710710003
201310710083)
长安大学精品课建设项目(2006)资助
关键词
间接加筋作用
夹层
饱和
强度参数
优势
indirect reinforcement
interlayer
saturated
strength parameters
dominant
