地震波入射角度对连续梁桥地震响应的影响  

Influence of Seismic Incident Angle in Seismic Response of Continuous Beam Bridge

作　　者：陶竑宇[1] 

机构地区：[1]西南交通大学,峨眉614202

出　　处：《价值工程》2013年第17期89-90,共2页Value Engineering

摘　　要：为了研究地震波入射角度不同对连续梁桥地震响应的影响,以某48+80+48m的连续梁桥为研究对象,分别计算了地震波沿不同角度入射时墩底的响应和跨中的位移。分析结果表明地震波入射角度是地震分析中不可忽略的影响因素,输入不同方向的地震波和提取不同方向的响应值,会对分析结论产生很大甚至相反的影响。应对不同地震波入射角度进行分析,最后选取最不利入射角度作为计算条件,进行计算分析。Taking the 48＋80＋48m continuous beam bridge as example, the paper studies the seismic response under the influence of different incidence angles. It calculated the response of pounding bottom and displacement of midspan under the different incidence angles of seismic wave. The result shows that the incidence angle of seismic wave is an important factor, and the incidence angles and different direction of response value has great influence on the result. We should analyze the different incidence angle, and choose the most unfavorable incidence an^le as calculation conditions and analysis.

关 键 词：连续梁桥 时程分析 地震波入射角度 MIDAS Civil有限元软件 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]