新型加筋土挡墙动变形特性试验研究  

Test study on dynamic deformation behavior of new reinforced earth retaining walls

作　　者：杨果林[1] 林宇亮[1] 李昀[1] 

机构地区：[1]中南大学土木建筑学院,长沙410004

出　　处：《振动与冲击》2010年第1期223-227,共5页Journal of Vibration and Shock

基　　金：湖南省科技厅资助项目(06ck3030);湖南省交通厅资助项目(200612)

摘　　要：对加筋格宾挡墙、绿色加筋格宾挡墙以及柔性网面土工格栅加筋土挡墙三种新型加筋土结构进行室内试验研究,施加了五种频率、四种振幅的动变循环荷载。每种挡墙累积振动次数达到200万次,得出了影响加筋土挡墙动变形特性的因素及其显著性,以及三种新型挡墙在不同频率、不同振幅的动荷载作用下的侧向变形和竖向变形的发展和变化规律,并对分级卸载时的挡墙的变形特性也作了研究。三种新型的挡墙在试验荷载作用下动变形特性表现出了很大的共性。Three types of new reinforced retaining walls were selected:terramesh reinforced earth retaining wall, green terramesh reinforced earth retaining wall and geogrid reinforced earth retaining wall with flexible surface,and cyclic loadings of five frequencies and four amplitudes were imposed during the lab test.For each retaining wall,the cumulative times of vibration reached 2 millions.According to the test,main factors which influenced dynamic deformation behavior and their significance were concluded,and the behaviors of both lateral and vertical deformation under the loadings of different frequencies and amplitudes were obtained.Besides,the deformation behavior under different unloading levels was also analyzed.These three new types of reinforced retaining walls showed a lot of common behaviors.

关 键 词：加筋格宾挡墙 绿色加筋格宾挡墙 柔性网面土工格栅加筋土挡墙 动变形特性 室内试验 

分 类 号：TU413.6[建筑科学—岩土工程] TU411.8[建筑科学—土工工程]