發(fā)布時(shí)間：2018-07-05 16:03

  本文選題：汶川地震 + 回瀾立交橋��； 參考：《振動(dòng)與沖擊》2014年12期

【摘要】：綿竹市回瀾立交橋?yàn)榈湫偷男∏拾霃搅簶?在汶川地震中該橋橋墩普遍出現(xiàn)塑性鉸壓潰破壞�；趯貫懥⒔辉训罉虻恼鸷η闆r調(diào)查,建立橋梁三維動(dòng)力數(shù)值模型,進(jìn)行了動(dòng)力特性及動(dòng)力時(shí)程分析,在時(shí)程分析中考慮了材料彈塑性、邊界碰撞效應(yīng)以及支座滑移效應(yīng)等關(guān)鍵非線性因素,并研究了各因素對橋梁地震動(dòng)響應(yīng)的影響,最后,基于定性與定量分析的結(jié)論,得到了回瀾立交匝道橋的震害成因。
[Abstract]:Huilan overpass in Mianzhu City is a typical beam bridge with small radius of curvature. Based on the investigation of earthquake damage of Huilan interchange ramp bridge, a three-dimensional dynamic numerical model of the bridge is established, and the dynamic characteristics and dynamic time-history analysis are carried out. The elastic-plastic material is considered in the time-history analysis. Some key nonlinear factors, such as boundary collision effect and support slip effect, are studied. Finally, based on the qualitative and quantitative analysis, the causes of earthquake damage of Huilan interchange ramp bridge are obtained.
【作者單位】： 林同h旯使こ套裳，

本文編號：2100818