中小跨径双柱式高墩桥梁横系梁对抗震性能的影响
|
摘要
通过对地震中双柱墩桥梁的震害调查分析总结认为在双柱式高墩之间加设横系梁对桥梁下部结构在地震作用下的受力状态具有很大影响。采用SAP2000有限元软件对某跨径为30 m双柱式高墩连续梁桥进行模态分析和反应谱分析,分别讨论了横系梁的数量、不同的布置方式以及不同的截面几何尺寸对桥墩在设计地震动作用下的各主要关键截面处内力的影响。计算结果表明:在双柱式高墩之间加设横系梁对桥梁下部结构的内力分配影响很大,尤其是在地震作用下,合理设计横系梁能够有效的提高横桥向刚度,调整下部结构内力,并且先于墩身进入塑性工作状态消耗地震动能量输入来提高桥梁的抗震性能。对不同模型计算结果进行比较分析可知在0.3H和0.8H处布置一道相对于墩身刚度为0.3~0.6的横系梁,对桥梁结构的地震响应最为有利,可为双柱式高墩桥梁的设计提供一定的参考。
By analyzing and summarizing the seismic damage of double column bridge with high-rise piers,it is believed that collar beams designed between double column high-rise piers have great influence on the strained condition of substructure suffered from earthquake action.SAP2000,one of finite element softwares,was used to perform modal analysis and response spectrum analysis for a 30 m long double columns high-rise pier continuous beam bridge.The number,location and section dimension of collar beam which have influence on internal force at critical cross-sections of piers in design earthquake action were discussed.The analysis result reveals that collar beams contribute a lot to the distribution of internal force of the substructure,especially when suffered earthquake action,well-designed collar beams can effectively improve the transverse stiffness,adjust the internal force of the substructure,and dissipate earthquake energy when the collar beams work in a plastic state before the column piers to improve the seismic performance of the whole bridge.By comparing the results of different finite element models,it is concluded that when one collar beam whose stiffness is about 0.3~0.6 to the column pier is fixed at 0.3H and 0.8H,it is very beneficial to the seismic performance of bridge.This work may be valuable for the design of double column high-rise pier bridge.
By analyzing and summarizing the seismic damage of double column bridge with high-rise piers,it is believed that collar beams designed between double column high-rise piers have great influence on the strained condition of substructure suffered from earthquake action.SAP2000,one of finite element softwares,was used to perform modal analysis and response spectrum analysis for a 30 m long double columns high-rise pier continuous beam bridge.The number,location and section dimension of collar beam which have influence on internal force at critical cross-sections of piers in design earthquake action were discussed.The analysis result reveals that collar beams contribute a lot to the distribution of internal force of the substructure,especially when suffered earthquake action,well-designed collar beams can effectively improve the transverse stiffness,adjust the internal force of the substructure,and dissipate earthquake energy when the collar beams work in a plastic state before the column piers to improve the seismic performance of the whole bridge.By comparing the results of different finite element models,it is concluded that when one collar beam whose stiffness is about 0.3~0.6 to the column pier is fixed at 0.3H and 0.8H,it is very beneficial to the seismic performance of bridge.This work may be valuable for the design of double column high-rise pier bridge.
引文
[1]杨沪湘,许航.高烈度地震山区桥梁抗震设计研究[J].公路,2009(8):246-250.YANG Huxiang,XU Hang.Research on Anti-seismicDesign of Bridge in Highly Seismic Mountainous Region[J].Highway,2009(8):246-250.
[2]李照奇.双幅双柱墩在某山区高速公路中的应用[J].山西建筑,2008,34(21):306-307.LI Zhaoqi.Application of Double Amplitude and DoubleColumn Piers in Some Mountain Area Express Highway[J].Shanxi Architecture,2008,34(21):306-307.
[3]严任苗.合肥派河大桥墩柱横系梁施工技术[J].路基工程,2010(3):234-236.YAN Renmiao.Construction Technology of Pier ColumnStraining Beam of Hefei Paihe Bridge[J].SubgradeEngineering,2010(3):234-236.
[4]宋晓东,李建中.山区桥梁的抗震概念设计[J].地震工程与工程振动,2004,24(1):92-96.SONG Xiaodong,LI Jianzhong.Seismic ConceptualDesign for Mountain Bridges[J].Earthquake Engineeringand Engineering Vibration,2004,24(1):92-96.
[5]秦建国,蒋伟.山区桥梁柱式墩的验算分析[J].公路交通技术,2007(3):86-89.QIN Jianguo,JIANG Wei.Checking Calculations andAnalysis of Columnar Pier of Bridges in Mountainous Areas[J].Technology of Highway and Transport,2007(3):86-89.
[6]王慧东.桥梁墩台与基础工程[M].北京:中国铁道出版社,2005.WANG Huidong.Pier and Abutment and FoundationEngineering of Bridge[M].Beijing:China RailwayPublishing House,2005.
[7]李廉锟.结构力学(上)[M].北京:中国铁道出版社,2004.LI Liankun.Structural Mechanics(Volume One)[M].Beijing:China Railway Publishing House,2004.
[8]康俊涛,王国鼎.无桥台斜腿刚架桥横系梁的设置分析[J].公路,2006,(4):86-89KANG Juntao,WANG Guoding.Analysis of DiaphragmLocating of Non-abutment Slant Legged Rigid FrameBridges[J].Highway,2006,(4):86-89.
[9]李健刚,杜玉东,魏燕玲,等.横系梁对双肢薄壁高墩刚构桥稳定性的影响分析[J].铁道工程学报,2008(11):31-34.LI Jiangang,DU Yuxue,WEI Yanling,et al.InfluenceAnalysis of the Stability by the Collar Beam of Double-shaft and Thin-wall High-rise Pier Rigid Frame Bridge[J].Journal of Railway Engineering Society,2008(11):31-34.
[10]王克海,李茜.桥梁抗震的研究进展[J].工程力学,2007,24(增刊2):75-82.WANG Kehai,LI Qian.Research Progress on SeismicDesign of Bridge[J].Engineering Mechanics,2007,24(S2):75-82.
[11]王克海,李茜.高墩桥梁地震响应分析[J].世界桥梁,2006(1):41-43.WANG Kehai,LI Qian.Analysis of Seismic Response ofBridges with High-rise Piers[J].World Bridges,2006(1):41-43.
[12]王克海,孙永红,韦韩,等.汶川地震后对我国结构工程抗震的几点思考[J].公路交通科技,2008,25(11):54-59.WANG Kehai,SUN Yonghong,WEI Han,et al.Comments on Seismic Strengthening for StructuralEngineering in China after Wenchuan Earthquake[J].Journal of Highway and Transportation Research andDevelopment,2008,25(11):54-59.
[13]王克海.桥梁抗震研究[M].北京:中国铁道出版社,2007.WANG Kehai.Research on Bridge Anti-seismic Capacity[M].Beijing:China Railway Publishing House,2007.
[14]贡金鑫,张勤,王雪婷.从汶川地震中桥梁震害看现行国内外桥梁抗震设计方法(二):抗震设计与构造[J].公路交通科技,2010,22(10):35-46.GONG Jinxin,ZHANG Qin,WANG Xueting.Comparative Study on Bridge Seismic Design Approachesin Different Specifications Based on Survey of Disaster inWenchuan Earthquake(2):Seismic Design and Structure[J].Journal of Highway and Transportation Research andDevelopment,2010,22(10):35-46.
[15]陈淮,王艳,葛素娟.白河特大桥主桥抗震性能分析[J].公路交通科技,2008,25(3):103-108.CHEN Huai,WANG Yan,GE Sujuan.AseismicPerformance Analysis of Main Bridge of Bai River GrandBridge[J].Journal of Highway and TransportationResearch and Development,2008,25(3):103-108.
[2]李照奇.双幅双柱墩在某山区高速公路中的应用[J].山西建筑,2008,34(21):306-307.LI Zhaoqi.Application of Double Amplitude and DoubleColumn Piers in Some Mountain Area Express Highway[J].Shanxi Architecture,2008,34(21):306-307.
[3]严任苗.合肥派河大桥墩柱横系梁施工技术[J].路基工程,2010(3):234-236.YAN Renmiao.Construction Technology of Pier ColumnStraining Beam of Hefei Paihe Bridge[J].SubgradeEngineering,2010(3):234-236.
[4]宋晓东,李建中.山区桥梁的抗震概念设计[J].地震工程与工程振动,2004,24(1):92-96.SONG Xiaodong,LI Jianzhong.Seismic ConceptualDesign for Mountain Bridges[J].Earthquake Engineeringand Engineering Vibration,2004,24(1):92-96.
[5]秦建国,蒋伟.山区桥梁柱式墩的验算分析[J].公路交通技术,2007(3):86-89.QIN Jianguo,JIANG Wei.Checking Calculations andAnalysis of Columnar Pier of Bridges in Mountainous Areas[J].Technology of Highway and Transport,2007(3):86-89.
[6]王慧东.桥梁墩台与基础工程[M].北京:中国铁道出版社,2005.WANG Huidong.Pier and Abutment and FoundationEngineering of Bridge[M].Beijing:China RailwayPublishing House,2005.
[7]李廉锟.结构力学(上)[M].北京:中国铁道出版社,2004.LI Liankun.Structural Mechanics(Volume One)[M].Beijing:China Railway Publishing House,2004.
[8]康俊涛,王国鼎.无桥台斜腿刚架桥横系梁的设置分析[J].公路,2006,(4):86-89KANG Juntao,WANG Guoding.Analysis of DiaphragmLocating of Non-abutment Slant Legged Rigid FrameBridges[J].Highway,2006,(4):86-89.
[9]李健刚,杜玉东,魏燕玲,等.横系梁对双肢薄壁高墩刚构桥稳定性的影响分析[J].铁道工程学报,2008(11):31-34.LI Jiangang,DU Yuxue,WEI Yanling,et al.InfluenceAnalysis of the Stability by the Collar Beam of Double-shaft and Thin-wall High-rise Pier Rigid Frame Bridge[J].Journal of Railway Engineering Society,2008(11):31-34.
[10]王克海,李茜.桥梁抗震的研究进展[J].工程力学,2007,24(增刊2):75-82.WANG Kehai,LI Qian.Research Progress on SeismicDesign of Bridge[J].Engineering Mechanics,2007,24(S2):75-82.
[11]王克海,李茜.高墩桥梁地震响应分析[J].世界桥梁,2006(1):41-43.WANG Kehai,LI Qian.Analysis of Seismic Response ofBridges with High-rise Piers[J].World Bridges,2006(1):41-43.
[12]王克海,孙永红,韦韩,等.汶川地震后对我国结构工程抗震的几点思考[J].公路交通科技,2008,25(11):54-59.WANG Kehai,SUN Yonghong,WEI Han,et al.Comments on Seismic Strengthening for StructuralEngineering in China after Wenchuan Earthquake[J].Journal of Highway and Transportation Research andDevelopment,2008,25(11):54-59.
[13]王克海.桥梁抗震研究[M].北京:中国铁道出版社,2007.WANG Kehai.Research on Bridge Anti-seismic Capacity[M].Beijing:China Railway Publishing House,2007.
[14]贡金鑫,张勤,王雪婷.从汶川地震中桥梁震害看现行国内外桥梁抗震设计方法(二):抗震设计与构造[J].公路交通科技,2010,22(10):35-46.GONG Jinxin,ZHANG Qin,WANG Xueting.Comparative Study on Bridge Seismic Design Approachesin Different Specifications Based on Survey of Disaster inWenchuan Earthquake(2):Seismic Design and Structure[J].Journal of Highway and Transportation Research andDevelopment,2010,22(10):35-46.
[15]陈淮,王艳,葛素娟.白河特大桥主桥抗震性能分析[J].公路交通科技,2008,25(3):103-108.CHEN Huai,WANG Yan,GE Sujuan.AseismicPerformance Analysis of Main Bridge of Bai River GrandBridge[J].Journal of Highway and TransportationResearch and Development,2008,25(3):103-108.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心