[1]李敏,柴寿喜,杜红普,等.麦秸秆加筋石灰土的抗剪强度及剪切破坏形式[J].深圳大学学报理工版,2011,28(No.1(001-095)):65-71.
 LI Min,CHAI Shou-xi,DU Hong-pu,et al.Shear strength and failure form of lime-soil reinforced with wheat straw[J].Journal of Shenzhen University Science and Engineering,2011,28(No.1(001-095)):65-71.
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麦秸秆加筋石灰土的抗剪强度及剪切破坏形式()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.1(001-095)
页码:
65-71
栏目:
土木建筑工程
出版日期:
2011-01-10

文章信息/Info

Title:
Shear strength and failure form of lime-soil reinforced with wheat straw
文章编号:
1000-2618(2011)01-0065-07
作者:
李敏12柴寿喜2杜红普3魏丽2石茜1
1) 兰州大学 西部灾害与环境力学教育部重点实验室,兰州 730000
2) 天津城市建设学院 天津市软土特性与工程环境重点实验室,天津 300384
3) 河北工业大学土木工程学院,天津 300401
Author(s):
LI Min12CHAI Shou-xi2DU Hong-pu3WEI Li2and SHI Qian1
1)Key Laboratory of Mechanics on Disaster and Environment in Western China,The Ministry of Education of China,Lanzhou University,Lanzhou 730000,P.R.China
2)Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment,Tianjin Institute of Urban Construction,Tianjin 300384,P.R.China
3)College of Civil Engineering,Hebei University of Technology,Tianjin 300401,P.R.China
关键词:
工程力学加筋土抗剪强度布筋位置破坏形态麦秸秆滨海盐渍土
Keywords:
engineering mechanicsreinforced soilshear strengthreinforced positionfailure formwheat strawinshore saline soil
分类号:
TU 443
文献标志码:
A
摘要:
选取整体均匀布筋、上部均匀布筋和下部均匀布筋3种布筋位置,借助三轴压缩实验,研究布筋位置对麦秸秆加筋石灰土抗剪强度的影响及3种布筋位置加筋土的破坏形式.结果表明,布筋位置主要影响土的黏聚力,对内摩擦角的影响较小,适宜的麦秸秆布筋方式可有效提高土的黏聚力;石灰土呈脆性破坏,3种布筋位置的麦秸秆加筋石灰土的破坏均在未加筋区域产生,加筋部位土的变形较小;石灰土和麦秸秆加筋石灰土的破坏面倾角均符合Mohr-Coulomb破坏准则和SMP(spatial mobilization plane)破坏准则.借助麦秸秆的高抗拉性能、空间交织作用和筋土摩擦作用,可有效约束土的变形,提高土的强度.
Abstract:
The reinforcement effect and strength of reinforced soil depending on a suitable reinforced position and triaxial shear test for reinforced lime-soil with wheat straw in three positions was carried out in this paper.First,reinforced position mainly affects the cohesion of reinforced soil,but has little influence on the internal friction angle;reasonable reinforced position plays an important role in improving strength of reinforced soil.Second,lime-soil displays failure in brittle manner;failure of reinforced lime-soil is located in un-reinforced region;the deformation in reinforced region decreases.Third,shear angle of lime-soil and reinforced lime-soil with wheat straw conform to the Mohr-Coulomb failure criterion and SMP(spatial mobilization plane) failure criterion.By the function of high tensile strength,space interweaving and load-sharing of wheat straw,the strength and anti-deformation of reinforced soil is improved.

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备注/Memo

备注/Memo:
收稿日期:2010-02-02;修回日期:2010-11-11
基金项目:国家自然科学基金资助项目(40772166);天津市高等学校科技发展基金资助项目(20090901)
作者简介:李敏(1985-),女(汉族),陕西省延安市人,兰州大学博士研究生.E-mail:limin-0409@163.com
通讯作者:柴寿喜(1962-),男(汉族),天津城市建设学院教授、博士生导师. E-mail:chaishouxi@163.com
更新日期/Last Update: 2011-01-13