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OALib Journal期刊
ISSN: 2333-9721
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钢管混凝土拱桥地震响应分析的参数研究
Keywords: 桥梁工程,地震响应,人造地震动,提篮拱桥,时程分析
Abstract:
松岙大桥主桥为260m的钢管混凝土提篮拱桥,以该桥为研究背景分析桥梁结构的地震时程响应,应用MAT-LAB语言编写了3个程序人造地震动、采用频域积分法将加速度时程转化为位移时程、由确定的加速度时程求其加速度反应谱,并采用SAP2000为计算平台对上述几种情况下的桥梁地震响应做了对比分析。分析结果显示,大跨度桥梁对于不同的地震波、采用不同的阻尼算法、是否考虑结构的行波效应、是否考虑结构的几何非线性其地震响应差别较大,在分析中应针对具体的桥梁结构确定合理的参数与求解方法。
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