浆砌挡墙外贴挂网混凝土层抗弯试验研究  

Experimental Study on Flexural Resistance of Concrete Layer Attached to the Outer Wall of Slurry Retaining Wall

作　　者：李曦 郭志广[1] 刘泽[1] 马兆生 Li Xi;Guo Zhiguang;Liu Ze;Ma Zhaosheng(College of Civil Engineering,Hunan University of Science and Technology,Xiangtan,Hunan 411201;Wenzhou Expressway Management Center,Zhejiang Communications Group,Wenzhou,Zhejiang 325000)

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]浙江省交通集团高速公路温州管理中心,浙江温州325000

出　　处：《江西建材》2024年第2期49-52,共4页Jiangxi Building Materials

摘　　要：为保证处置病害浆砌挡墙的施工安全和加固效果,文中提出钢筋混凝土外贴病害浆砌挡墙的加固措施,设计5组抗弯试验(1组为无外贴层,4组为不同厚度外贴层),探究外贴层对浆砌挡墙的加固效果及其作用机理。试验结果表明,加设5~20 cm厚外贴层后,破坏模式由脆性破坏转变为延性破坏,承载力和抗弯刚度显著提升,开裂弯矩提升1.25~5.67倍,极限弯矩增大2.75~13倍。In order to ensure the construction safety and reinforcement effect during the process of treating and treating the damaged slurry retaining wall,the reinforcement measures of reinforced concrete attached to the damaged slurry retaining wall are put forward.Five groups of flexural tests were designed for the reinforcement model(1 group with no outer layer and 4 groups with different thickness of outer layer),and the strengthening effect and mechanism of outer layer on slurry retaining wall were investigated.The test results show that the failure mode changes from brittle failure to ductile failure after the addition of 5~20 cm thick outer layer,the bearing capacity and bending stiffness are significantly increased,the cracking moment is increased by 1.25~5.67 times,and the ultimate bending moment is increased by 2.75~13 times.

关 键 词：浆砌片石挡墙 挡墙加固 组合梁 抗弯性能 

分 类 号：TU37[建筑科学—结构工程]