麦秸秆加筋黄土强度变形特性试验研究  

Experimental study on strength and deformation characteristics of wheat straw reinforced loess

作　　者：荆文波 杨毅 薛沛柯 陈挺 罗旭 褚峰 Jing Wenbo;Yang Yi;Xue Peike;Chen Ting;Luo Xu;Chu Feng(School of Urban Planning and Municipal Engineering,Xi’an Polytechnic University,Xi’an 710048,China)

机构地区：[1]西安工程大学城市规划与市政工程学院,陕西西安710048

出　　处：《山西建筑》2023年第10期9-14,共6页Shanxi Architecture

基　　金：陕西省自然科学基础研究计划资助项目(资助号:2020JM-572);西安市科技计划资助项目(资助号:2020KJRC0021);西安市碑林区科技计划资助项目(项目编号:GX2148)。

摘　　要：基于现有的麦秸秆加筋土的研究基础下,探究白灰和麦秸秆共同作用下的加筋材料对土壤强度的影响。通过无侧限抗压强度试验和直接剪切试验,探究不同含量的白灰与麦秸秆对土壤抗压及抗剪强度的影响。试验结果表明:土体的抗剪强度在一定的范围内随麦秸秆含量的增加呈现先增大后减小的趋势,同时随试样中白灰含量增大而增大。其他材料的掺入明显提高了土体的黏聚力,但对内摩擦角提升不大。通过对朗肯土压力理论公式的修正,得出挡土墙高度与麦秸秆含量的关系。Based on the existing research on wheat straw-reinforced soil,this study explores the effect of reinforced materials,including lime and wheat straw,on soil strength.By conducting unconfined compressive strength tests and direct shear tests,the effects of different proportions of lime and wheat straw on soil compressive and shear resistance strength are investigated.The experimental results show that the shear strength of the soil increases first and then decreases within a certain range as the wheat straw content increases,and it also increases with the increasing lime content in the sample.The addition of other materials significantly improves the soil's cohesion but has little effect on the internal friction angle.By modifying the Rankine earth pressure theory formula,the relationship between the height of the retaining wall and the wheat straw content is determined.

关 键 词：加筋黄土 麦秸秆 朗肯土压力 直接剪切试验 

分 类 号：TU444[建筑科学—岩土工程]