E2地震作用下部分填充钢管混凝土桥墩非线性时程分析及抗震性能评价
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摘要
该文主要描述了由部分填充钢管混凝土桥墩组成的五跨连续梁桥在顺桥及横桥方向受E2地震作用产生的动力反应并对各个桥墩进行了抗震性能评价。采用的地震动为1995日本兵库县南部地震在神户海洋气象台记录的JMA的NS和EW成分。动力分析采用桥梁抗震设计专用软件TDAPⅢ。在桥梁分析模型中,桥墩采用非线性纤维单元,上部结构和桥台采用弹性梁单元,基础采用节点弹簧单元,橡胶支座采用剪切弹簧单元。从动力分析结果可知桥墩在横桥方向的响应大于顺桥方向,但在横桥方向E2地震动作用下该座桥的桥墩仍处于安全状态。
In this paper,the nonlinear time-history analysis of a five-span continuous viaduct bridge under E2 earthquake motion is carried out in the longitudinal direction and transverse direction of the bridge separately.And the seismic performance of these partially concrete-filled steel bridge piers of Viaduct Bridge is evaluated.The NS and EW components of seismic waves recorded at the Japanese Metrological Agency(JMA) in the 1995's Hyogo-ken Nanbu Earthquake and special seismic analysis program TDAPⅢ(time domain 3-dimensional dynamic analysis program) are used in this analysis.In this analytical model,these piers are idealized by a 3-D fiber element;the superstructure and abutment are idealized by a 3-D beam element;the foundation and bearing are idealized by a spring element.From analytical results,it is found that the responsive displacement and force of piers in the transverse direction of the bridge is larger than that of the longitudinal direction.And it is found these piers of Viaduct Bridge should be safe under E2 earthquake motion,too.
In this paper,the nonlinear time-history analysis of a five-span continuous viaduct bridge under E2 earthquake motion is carried out in the longitudinal direction and transverse direction of the bridge separately.And the seismic performance of these partially concrete-filled steel bridge piers of Viaduct Bridge is evaluated.The NS and EW components of seismic waves recorded at the Japanese Metrological Agency(JMA) in the 1995's Hyogo-ken Nanbu Earthquake and special seismic analysis program TDAPⅢ(time domain 3-dimensional dynamic analysis program) are used in this analysis.In this analytical model,these piers are idealized by a 3-D fiber element;the superstructure and abutment are idealized by a 3-D beam element;the foundation and bearing are idealized by a spring element.From analytical results,it is found that the responsive displacement and force of piers in the transverse direction of the bridge is larger than that of the longitudinal direction.And it is found these piers of Viaduct Bridge should be safe under E2 earthquake motion,too.
引文
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[10]Ark Information Systems,Inc..TDAPⅢversion3.01 manual[M].Japan:Ark Co.,Ltd,2008.
[11]Japan road association.Specification for highway bridges partⅤseismic design[M].Japan:Maruzen Co.,Ltd,2002.
[2]中华人民共和国交通运输部.公路桥梁抗震设计细则JTG/T B02-01-2008[M].北京:人民交通出版社,2008.People Republic of China Ministry of Transport.Highway bridge seismic design rules JTG/T B02-01-2008[M].Beijing:China Communications Press,2008.(in Chinese)
[3]土木学会.阪神?淡路大震災調査報告土木構造物の被害-橋梁-[M].日本:丸善株式会社,1996.Japan Society of Civil Engineers.Report on the hanshin-awaji earthquake disaster-damage to civil engineering structures bridge structure[M].Japan:Maruzen Co.,Ltd,1996.(in Japanese)
[4]Kazuhiro Nishikawa,Satoshi Yamamoto,Tohru Natori,Keiji Terao,Hiromichi Yasunami,Masahiro Terada.Retrofitting for seismic upgrading of steel bridge columns[J].Engineering Structure,1998,20(4):540―551.
[5]Chiaki Matsui.Structural Performance and design of concrete filled steel tubular structures[J].JSSC Steel Construction Engineering,2006,16:17―19.
[6]Usami T,Ge H B,Saizuka K.Behavior of partially concrete-filled steel bridge piers under cyclic and dynamic loading[J].Journal of Constructional Steel Research,1997,41(2/3):121―136.
[7]井浦雅司,折野明宏,石澤俊希.コンクリートを部分充填した円形鋼製橋脚の弾塑性挙動に関する研究[J].土木学会論文集,2002,696(58):285―298.Masashi Iura,Akihiro Orino,Toshiki Ishizawa.Elasto-plastic behaviour of concrete-filled steel tubular columns[J].Structural Engineering and Earthquake Engineering,JSCE,2002,696(58):285―298.(in Japanese)
[8]王占飞,张海,张敏江,隋伟宁,山尾敏孝.部分填充钢管混凝土桥墩抗震性能的数值分析[J].沈阳建筑大学学报,2008,24(6):949―953.Wang Zhanfei,Zhang Hai,Zhang Minjiang,Sui WeiNing,Toshitaka Yamao.Analytical study on seismic performance of partially concrete-filled steel bridge piers[J].Journal of Shenyang JianZhu University,2008,24(6):949―953.(in Chinese)
[9]孙永杰,姜兰潮.长方形断面钢桥墩抗震性能评价方法的研究[J].铁道建筑,2006(1):1―3.Sun Yongjie,Jiang Lanchao.Study on seismic performance evaluation method of rectangle section steel bridge piers[J].Railway Construction,2006(1):1―3.(in Chinese)
[10]Ark Information Systems,Inc..TDAPⅢversion3.01 manual[M].Japan:Ark Co.,Ltd,2008.
[11]Japan road association.Specification for highway bridges partⅤseismic design[M].Japan:Maruzen Co.,Ltd,2002.
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