加筋夯土墙片的平面内抗剪性能试验

发布时间：2018-06-30 01:56

本文选题：夯土墙片 + 抗剪性能　；参考：《中南大学学报(自然科学版)》2016年08期

【摘要】：对由废弃混凝土夯筑而成的试件进行抗压试验、劈裂试验及墙片斜压试验,研究水泥稳定夯土材料在静载作用下的破坏特征及强度特性,并着重研究夯土墙片的平面内抗剪性能及各种加筋形式对其抗剪性能的影响。此外,根据试验结果,参考澳大利亚混凝土结构设计规范AS 3600—2009建议的抗剪强度计算公式,探讨水泥稳定夯土材料抗压强度与抗剪强度之间的相互关系。研究结果表明:这种材料的抗压强度、抗剪强度、抗拉强度可分别达到8.68~10.11,1.55和1.01~1.23 MPa;加筋夯土墙片的抗剪强度、延性可分别提高6%~42%和35%~92%;采用聚丙烯纤维可使墙片的刚度提高49%;钢筋的位置及布置方向对其与夯土间的黏结性能有明显影响。且对于竖向分层夯筑的试件,按规范AS 3600—2009公式计算的抗剪强度比试验结果的抗剪强度大。
[Abstract]:The compressive test, split test and baroclinic test of wall are carried out to study the failure characteristics and strength characteristics of cement stabilized rammed soil under static load. The in-plane shear resistance of rammed earth wall and the influence of various reinforcement forms on its shear resistance are studied. In addition, according to the test results, the relationship between compressive strength and shear strength of cement-stabilized rammed soil materials is discussed with reference to the formula of shear strength proposed by AS3600-2009 for the design of concrete structures in Australia. The results show that the compressive strength, shear strength and tensile strength of this material can reach 8.68 ~ 10.111.55 and 1.01 ~ 1.23 MPa, respectively. The ductility can be increased by 6% and 35%, the stiffness of the wall can be increased by 49% by the use of polypropylene fiber, and the adhesion between the steel bar and the rammed soil is obviously affected by the position and arrangement direction of the steel bar. The shear strength calculated according to AS3600-2009 formula is larger than that of the test results.
【作者单位】：扬州大学建筑科学与工程学院;西澳大学土木和能源工程学院;
【基金】：澳洲ARC资助项目(LP110100251) 国家自然科学基金资助项目(51308489) 江苏省“六大人才高峰”资助项目(2015-JZ-010)~~
【分类号】：TU528

【参考文献】