中小跨径连续梁桥抗震结构参数影响分析
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摘要
以云南山区高速公路常用的连续梁桥下部双柱式桥墩、T形桥墩桥梁为研究对象,建立了空间动力弹塑性时程分析模型,分别讨论了墩底边界模拟方法、单联与多联模型对地震响应结果的影响程度与规律。结果表明:不同墩底边界模拟方法对桥墩的地震作用影响较大;单联模型可用于双柱式桥墩纵向地震反应分析以及T形墩纵、横向地震反应分析;双柱式桥墩横向地震分析宜采用多联模型。
Taking the double-column bridge piers and T-shape bridge piers of continuous girder bridge in Yunnan mountain highway as the research object,this paper established a space dynamic elastic-plastic time history analysis model,discussed the influence degree and rule of the pier bottom boundary simulation method,single-joint and multi-joint model parameters on the seismic response results through a large number of calculation and analysis.The results indicated that different pier bottom boundary simulation method has a greater effect on the earthquake,single-joint model can be used for vertical seismic response analysis of double-column type pier and vertical or horizontal seismic response analysis of T-shape pier,horizontal seismic analysis of double-column type pier should primarily adopt the USES split model.
Taking the double-column bridge piers and T-shape bridge piers of continuous girder bridge in Yunnan mountain highway as the research object,this paper established a space dynamic elastic-plastic time history analysis model,discussed the influence degree and rule of the pier bottom boundary simulation method,single-joint and multi-joint model parameters on the seismic response results through a large number of calculation and analysis.The results indicated that different pier bottom boundary simulation method has a greater effect on the earthquake,single-joint model can be used for vertical seismic response analysis of double-column type pier and vertical or horizontal seismic response analysis of T-shape pier,horizontal seismic analysis of double-column type pier should primarily adopt the USES split model.
引文
[1]王蕾,赵成刚,王智峰.考虑地形影响和多点激励的大跨高墩桥地震响应分析[J].土木工程学报,2006,39(1):50-59.
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[3]高玉峰,蒲黔辉,李晓斌.大跨长联预应力混凝土连续梁桥地震反应分析[J].工程抗震与加固改造,2009,31(2):21-25.
[4]高玉峰,施洲,秦世强.双柱式高墩桥梁地震响应结构参数影响分析[J].公路交通科技,2011,28(3):67-75.
[5]杨智玲.铁路钢筋混凝土连续梁桥静力弹塑性抗震分析[J].铁道建筑,2011(6):25-27.
[6]徐扬,王冲,周凌远.大跨高墩连续刚构桥地震响应分析[J].铁道建筑,2010(2):14-17.
[2]王常峰,陈兴冲,夏修身.高墩大跨连续刚构桥抗震设计参数优化[J].公路交通科技,2006,23(4):80-83.
[3]高玉峰,蒲黔辉,李晓斌.大跨长联预应力混凝土连续梁桥地震反应分析[J].工程抗震与加固改造,2009,31(2):21-25.
[4]高玉峰,施洲,秦世强.双柱式高墩桥梁地震响应结构参数影响分析[J].公路交通科技,2011,28(3):67-75.
[5]杨智玲.铁路钢筋混凝土连续梁桥静力弹塑性抗震分析[J].铁道建筑,2011(6):25-27.
[6]徐扬,王冲,周凌远.大跨高墩连续刚构桥地震响应分析[J].铁道建筑,2010(2):14-17.
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