双绞合六边形金属网加筋格宾挡墙地震动力特性试验研究  

Analysis on Seismic Behavior of Double Twist Hexagonal Wire Mesh Terramesh Reinforced Retaining wall Subjected to Excitations

作　　者：黄向京[1] 王祥[1] 王维[1] 刘泽[2] 

机构地区：[1]湖南省交通规划勘察设计院,湖南长沙410008 [2]中南大学土木建筑学院,湖南长沙410075

出　　处：《公路工程》2009年第5期5-9,共5页Highway Engineering

基　　金：湖南省交通科技项目(200612)

摘　　要：以湖南湘潭至衡阳高速公路西线加筋格宾挡墙为工程背景,通过采用MTS设备500 kN伺服激振器模拟地震荷载,基于红砂岩填料,研究了钢丝直径分别为2.2 mm和2.7 mm的两种双绞合六边形金属网加筋格宾挡墙水平地震作用下的动力特性。试验结果表明两种新型加筋土结构均为优良的抗震结构,均能承受抗震设防烈度为9度的地震荷载,其加筋长度和加筋层间距合理时,加筋土体在地震作用下呈整体变形特性,过长的筋材长度并不能明显的改善加筋格宾挡墙的动力性质。This paper based on the engineering background of Terramesh wall used in Xiang Tan-Heng Yang West Highway in Hunan province.Based on the filling material of red-sand rock,simulated seismic-load by 500kN servo vibration exciter of MTS,studied Terramesh wall s dynamic characters under horizontal seismic-load composed by two materials individual,one is double twist hexagonal mesh wire that the diameter is 2.2mm and the other is 2.7mm.The test s result indicated that the two new Terramesh walls are quality earthquake-resistant structures when the earth quake intensity is 9 or under 9. The Terramesh wall has characters of integral deformed under the seismic - load when it＇ s reinforced bar and reinforced layer has a separation is suitable. Too long reinforced bar cannot improved Terramesh wall＇s dynamic characters.

关 键 词：双绞合六边形金属网 加筋格宾 绿色加筋格宾 水平地震 动力特性 

分 类 号：TU411.8[建筑科学—岩土工程]