地震波入射角度对连续梁桥地震响应的影响
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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 angle as calculation conditions and analysis.
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 angle as calculation conditions and analysis.
引文
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[2]预应力混凝土连续梁桥.范立础.人民交通出版社.1985.1.
[3]中华人民共和国铁道部标准.铁路桥涵施工规范.TB10203-2002.
[4]李亚东.桥梁工程概论.西南交通大学出版社.2007.5.
[5]铁道部第四勘察设计院.高速铁路.中国铁道出版社,1984.2.
[6]邵旭东.程翔云.李立峰.桥梁设计与计算.人民交通出版社,2007.2.
[7]黎耀.横向钢拱独塔斜拉桥全桥空间计算分析研究.西南交通大学硕士论文,2007.1:18-19页.
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