连续刚构桥抗震性能影响因素分析
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摘要
为研究桥墩高度对桥梁抗震性能的影响,以某95 m+180 m+95 m连续刚构桥为例,分析了桥墩高度对桥梁抗震性能的影响。建立了考虑边跨支座处的弹性约束作用以及基础和地基的影响的数值模拟有限元模型,并进行了结构地震响应分析,得到了桥墩高度对桥梁刚度和位移的具体影响,有助于了解连续刚构桥的动力特性以及对连续刚构桥设计进行针对性优化。
To study the influence of pier height on the seismic performance of bridge,a continuous rigid frame bridge was analyzed. The continuous rigid frame bridge's span is 95 m + 180 m + 95 m. Considering the boundary cross joints of elastic restraint function,the influence of the foundation,and the influence of the subgrade,the finite element model was established. And the seismic response of the structure was analyzed.The influence of the height of the bridge's piers on the bridge's stiffness and displacement was ascertained. The study contributes to both understand the dynamic characteristics of the continuous rigid frame bridge and optimize the design of the continuous rigid frame bridge.
To study the influence of pier height on the seismic performance of bridge,a continuous rigid frame bridge was analyzed. The continuous rigid frame bridge's span is 95 m + 180 m + 95 m. Considering the boundary cross joints of elastic restraint function,the influence of the foundation,and the influence of the subgrade,the finite element model was established. And the seismic response of the structure was analyzed.The influence of the height of the bridge's piers on the bridge's stiffness and displacement was ascertained. The study contributes to both understand the dynamic characteristics of the continuous rigid frame bridge and optimize the design of the continuous rigid frame bridge.
引文
[1]王心顺,舒春生.非对称高墩大跨曲线连续刚构桥地震反应分析[J].铁道标准设计,2008(6):55-57.
[2]姚鑫,张加桂,张永双,等. 2011年3月10日盈江5. 8级地震诱发砂土液化灾害特征研究[J].工程地质学报,2011,19(2):152-161.
[3]范立础,聂利英,李建中.复杂结构地震波输入最不利方向标准问题[J].同济大学学报(自然科学版),2003(6):631-636.
[4]潘旦光,楼梦麟,范立础.多点输入下大跨度结构地震反应分析研究现状[J].同济大学学报(自然科学版),2001(10):1213-1219.
[5]叶爱君,胡世德,范立础.大跨度桥梁抗震设计实用方法[J].土木工程学报,2001(1):1-6.
[6]潘强,方诗圣,程晓东.高墩大跨连续刚构桥地震反应的行波效应研究[J].湖南工程学院学报(自然科学版),2010,20(2):82-85.
[7]唐松,潘强.高墩大跨连续刚构桥地震反应研究[J].山西建筑,2010,36(31):340-341.
[8]何钦象,田小红,宋丹.高墩大跨径连续刚构桥抗震性能评估[J].振动与冲击,2009,28(1):68-71,196.
[9]王东升,岳茂光,李晓莉,等.高墩桥梁抗震时程分析输入地震波选择[J].土木工程学报,2013,46(S1):208-213.
[2]姚鑫,张加桂,张永双,等. 2011年3月10日盈江5. 8级地震诱发砂土液化灾害特征研究[J].工程地质学报,2011,19(2):152-161.
[3]范立础,聂利英,李建中.复杂结构地震波输入最不利方向标准问题[J].同济大学学报(自然科学版),2003(6):631-636.
[4]潘旦光,楼梦麟,范立础.多点输入下大跨度结构地震反应分析研究现状[J].同济大学学报(自然科学版),2001(10):1213-1219.
[5]叶爱君,胡世德,范立础.大跨度桥梁抗震设计实用方法[J].土木工程学报,2001(1):1-6.
[6]潘强,方诗圣,程晓东.高墩大跨连续刚构桥地震反应的行波效应研究[J].湖南工程学院学报(自然科学版),2010,20(2):82-85.
[7]唐松,潘强.高墩大跨连续刚构桥地震反应研究[J].山西建筑,2010,36(31):340-341.
[8]何钦象,田小红,宋丹.高墩大跨径连续刚构桥抗震性能评估[J].振动与冲击,2009,28(1):68-71,196.
[9]王东升,岳茂光,李晓莉,等.高墩桥梁抗震时程分析输入地震波选择[J].土木工程学报,2013,46(S1):208-213.