摘要
对于堤防工程振动沉模防渗墙体,混合砂浆防渗料的破坏特性及其判别准则是评价防渗墙体安全性的关键,根据混合砂浆防渗料的室内试验结果,研究了混合砂浆防渗料的破坏特性,提出了考虑混合砂浆防渗料性质的拉、剪破坏临界应力状态及其防渗墙体的破坏判别指标。对于堤防振动沉模混合砂浆防渗墙体,若墙体发生拉断破坏则采用抗拉强度判别;若发生剪切破坏则采用剪应力水平判别;挠跨比作为辅助性判别指标。
The failure characteristics of composite mortar are revealed based on the test results of a levee project. The critical stress state of tensile and shear for the impervious composite mortar is presented, as well as the failure criterion of diaphragm wall. The tensile strength is used in the tensile failure criterion of diaphragm wall. The shear level is used in the shear failure criterion of diaphragm wall. The ratio of flexible span is used as the auxiliary failure criterion. According to the failure criterion and mechanical analysis, the diaphragm wall would display a good behavior, which has been verified in the levee project.
出处
《工程力学》
EI
CSCD
北大核心
2010年第8期120-124,共5页
Engineering Mechanics
基金
江苏省教育厅基金项目(07KJB560250)
扬州大学新世纪中青年学术带头人专项基金项目(0588980043143)
关键词
堤防工程
振动沉模防渗技术
混合砂浆
防渗墙
破坏准则
levee project
vibratory sink mold technique
composite mortar
diaphragm wall
failure criterion
