新型弹塑性防落梁球型钢支座在桥梁抗震设计中的应用
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摘要
钢管混凝土刚性系杆拱桥抗震设计中由于跨度大和简支特点对支座要求很高。以某下承式钢管混凝土刚性系杆拱桥为工程背景,探讨了弹塑性防落梁球型钢支座在该桥抗震设计时的减隔震效果。分析结果表明,以E1地震波作用下的固定支座受力情况为依据,选取的减隔震支座参数合理;安装该减隔震支座后,桥梁下部结构在罕遇地震波作用下关键截面剪力减小比例为22.88%～35.54%,弯矩减小比例为18.73%～32.14%,该支座减隔震效果良好。
In the seismic design of concrete filled steel tubular(CFST) rigid tied arch bridge,high performances for bearing are required due to the features of large span and simply supported type.Taking a CFST rigid tied bridge as an example,we explore the isolation effect of the elastic-plastic falling prevention ball steel bearings,the results indicate that the bearing parameters can be chosen reasonably based on the response of the constant bearing under the E1 level and the shear reduces to 22.88%～35.54%,the bend reduces to 18.73%～32.14%.
In the seismic design of concrete filled steel tubular(CFST) rigid tied arch bridge,high performances for bearing are required due to the features of large span and simply supported type.Taking a CFST rigid tied bridge as an example,we explore the isolation effect of the elastic-plastic falling prevention ball steel bearings,the results indicate that the bearing parameters can be chosen reasonably based on the response of the constant bearing under the E1 level and the shear reduces to 22.88%～35.54%,the bend reduces to 18.73%～32.14%.
引文
[1]叶爱君.桥梁抗震[M].北京:人民交通出版社,2002.
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[4]张鹏,张大长,孙雷,等.设置阻尼支撑对钢管混凝土拱桥纵桥向减震效果的分析[J].南京工业大学学报:自然科学版,2007(3):87-93.ZHANG Peng,ZHANG Da-chang,SUN Lei,et al.Analysis on vibration reduction of CFST arch bridge with damping braces inspan direction[J].Journal of Nanjing University of Technology:Natural Science Edition,2007(3):87-93.(in Chinese)
[5]吕建根,王荣辉.某钢管混凝土系杆拱桥病害检测及其加固[J].工业建筑,2012(8):158-161.LV Jian-gen,WANG Rong-hui.Deterioration examination and reinforcement of CFST tied arch bridge[J].IndustrialCanstruction,2012(8):158-161.(in Chinese)
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[8]Moehle J P,Eberhard M O.Earthquake Damage to Bridges[M].Boca Raton:CRC Press,2000.
[9]葛建新,曹晓华.新型球型支座技术特点和加工工艺探讨[J].装备制造技术,2010(8):105-106.GE Jian-xin,CAO Xiao-hua.The discussion of new spheroidal support technology characteristic and processing craft[J].Equipment Manufacturing Technology,2010(8):105-106.(in Chinese)
[10]张培基.FLLGZ弹塑性防落梁球型钢支座的研制技术报告[R].武汉:长江水利委员会长江勘测规划设计研究院,2011.
[11]张艳红,胡晓,胡选儒,等.球型支座应用于大型渡槽的隔震研究[J].南水北调与水利科技,2011,9(5):1-5.ZHANG Yan-hong,HU Xiao,HU Xuan-ru,et al.Seismic isolation study of large-scale aqueduct with ball bearings[J].Sourth-to-North Water Diversion and Water Science and Technology,2011,9(5):1-5.(in Chinese)
[12]重庆交通科研设计院.公路桥梁抗震细则(JTG/TB02-01-2008)[S].北京:人民交通出版社,2008.
[2]范立础,胡世德,叶爱君.大跨度桥梁抗震设计[M].北京:人民交通出版社,2001.
[3]邰扣霞,张佐安,丁大钧.我国钢管混凝土拱桥建设[J].桥梁建设,2007(4):65-69.TAI Kou-xia,ZHANG Zuo-an,DING Da-jun.Construction of concrete-filled steel tube arch bridge in China[J].BridgeConstruction,2007(4):65-69.(in Chinese)
[4]张鹏,张大长,孙雷,等.设置阻尼支撑对钢管混凝土拱桥纵桥向减震效果的分析[J].南京工业大学学报:自然科学版,2007(3):87-93.ZHANG Peng,ZHANG Da-chang,SUN Lei,et al.Analysis on vibration reduction of CFST arch bridge with damping braces inspan direction[J].Journal of Nanjing University of Technology:Natural Science Edition,2007(3):87-93.(in Chinese)
[5]吕建根,王荣辉.某钢管混凝土系杆拱桥病害检测及其加固[J].工业建筑,2012(8):158-161.LV Jian-gen,WANG Rong-hui.Deterioration examination and reinforcement of CFST tied arch bridge[J].IndustrialCanstruction,2012(8):158-161.(in Chinese)
[6]陈宝春,韦建刚,吴庆雄.钢管混凝土拱桥技术规程与设计应用[M].北京:人民交通出版社,2011.
[7]谢开仲,吕文高,覃乐勤,等.钢管混凝土拱桥地震破坏评估研究[J].中国公路学报,2012(2):53-59.XIE Kai-zhong.LV Wen-gao,QIN Le-qing,et al.Research on seismic damage evaluation of CFST arch bridge[J].China Journalof High Way and Transport,2012(2):53-59.(in Chinese)
[8]Moehle J P,Eberhard M O.Earthquake Damage to Bridges[M].Boca Raton:CRC Press,2000.
[9]葛建新,曹晓华.新型球型支座技术特点和加工工艺探讨[J].装备制造技术,2010(8):105-106.GE Jian-xin,CAO Xiao-hua.The discussion of new spheroidal support technology characteristic and processing craft[J].Equipment Manufacturing Technology,2010(8):105-106.(in Chinese)
[10]张培基.FLLGZ弹塑性防落梁球型钢支座的研制技术报告[R].武汉:长江水利委员会长江勘测规划设计研究院,2011.
[11]张艳红,胡晓,胡选儒,等.球型支座应用于大型渡槽的隔震研究[J].南水北调与水利科技,2011,9(5):1-5.ZHANG Yan-hong,HU Xiao,HU Xuan-ru,et al.Seismic isolation study of large-scale aqueduct with ball bearings[J].Sourth-to-North Water Diversion and Water Science and Technology,2011,9(5):1-5.(in Chinese)
[12]重庆交通科研设计院.公路桥梁抗震细则(JTG/TB02-01-2008)[S].北京:人民交通出版社,2008.
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