立交桥上跨地铁车站结构抗震性能研究
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摘要
研究目的:地下大空间构筑物的开发利用成为近年来城市化进程的热点,相关的抗震规范也在近几年陆续出台,但抗震设计的理论和实践水平与地面结构相比还有差距,存在与地下结构建设水平相脱节的情况。本文对上部拟建立交桥的地铁车站工程进行基于时程分析法的抗震性能研究,对描述2种不同站桥相互关系的设计方案进行数值分析并得出结论,期望对地下结构抗震设计的认识与方法的完善提供有益思路。研究结论:(1)各工况下的车站顶板-底板层间位移角均满足相关规范中对结构弹性层间位移角限值的要求;(2)站桥分离方案在满足变形和承载力要求的前提下,更好地节省了工程造价和劳动力成本;(3)采用时程分析法对地下结构进行计算,宜将计算结果与其他抗震分析方法的对应结果进行比对并进行过程修正,对计算结果的评价应以结构的抗震性能及薄弱部位的定性分析为主,并作为结构设计的参考依据;(4)本研究成果对地下工程的抗震分析与结构设计具有参考和借鉴价值。
Research purposes:Exploitation of underground large space structures became hotspot in the development process of urbanization in recent years,some seismic codes went into effect in these years,but the level of seismic theory and application still have room for improvement compared with ground structures,it 's not adaptable with the fast development of underground construction.Based on time history analysis method,this paper simulates and analyzes the subway station which has a overpass bridge on top,result data of 2 conditions which describe the different position of subway station and overpass bridge is analyzed and concluded,hoping it is helpful to the recognition and method perfection of seismic design of underground structures.Research conclusions:(1) Displacement difference between top plate and bottom plate of the station under all conditions can meet the requirement of the limit of elastic inter-story displacement angle in the relevant codes.(2) Under the condition that deformation and bearing capacity of structure meet the requirements of code,the bridge-station separated plan saves more expenditure and labor cost.(3) Results of time history analysis of underground constructions should be compared with the corresponding results of other seismic analysis methods and be corrected,the analysis of seismic performance of underground structure should be analyzed qualitatively and taken as reference of structure design.(4) The research results have reference value for the seismic analysis and structural design ofunderground engineering.
Research purposes:Exploitation of underground large space structures became hotspot in the development process of urbanization in recent years,some seismic codes went into effect in these years,but the level of seismic theory and application still have room for improvement compared with ground structures,it 's not adaptable with the fast development of underground construction.Based on time history analysis method,this paper simulates and analyzes the subway station which has a overpass bridge on top,result data of 2 conditions which describe the different position of subway station and overpass bridge is analyzed and concluded,hoping it is helpful to the recognition and method perfection of seismic design of underground structures.Research conclusions:(1) Displacement difference between top plate and bottom plate of the station under all conditions can meet the requirement of the limit of elastic inter-story displacement angle in the relevant codes.(2) Under the condition that deformation and bearing capacity of structure meet the requirements of code,the bridge-station separated plan saves more expenditure and labor cost.(3) Results of time history analysis of underground constructions should be compared with the corresponding results of other seismic analysis methods and be corrected,the analysis of seismic performance of underground structure should be analyzed qualitatively and taken as reference of structure design.(4) The research results have reference value for the seismic analysis and structural design ofunderground engineering.
引文
[1]高智能,卓卫东,谷音.地铁地下结构抗震研究现状[J].福州大学学报(自然科学版),2013(4):598-608.Gao Zhineng,Zhuo Weidong,Gu Yin.A State-ofthe-art Review of Seismic Analysis of Subway Structure[J].Journal of Fuzhou University(Natural Science Edition),2013(4):598-608.
[2]郑永来,杨林德,李文艺,等.地下结构抗震[M].上海:同济大学出版社,2011.Zheng Yonglai,Yang Linde,Li Wenyi,etc.Antiseismic Performance of Underground Structure[M].Shanghai:Tongji University Press,2011.
[3]曹万林,王敏.矩形钢管混凝土边框组合剪力墙及筒体结构抗震研究[J].工程力学,2008(1):58-70.Cao Wanlin,Wang Min.A Seismic Research of Composite Shear Wall and Core Walls with Rectangular Concrete Filled Steel Tube Columns[J].Engineering Mechanics,2008(1):58-70.
[4]彭斌,曹万林,王智慧.不同方向水平力下多腔钢管混凝土巨型柱抗震性能研究[J].世界地震工程,2012(2):90-97.Peng Bin,Cao Wanlin,Wang Zhihui.Research on Seismic Behavior of Multi-cell CFST Mega-Columns under Horizontal Forces in Different Directions[J].World Earthquake Engineering,2012(2):90-97.
[5]刘晶波,王文晖,赵冬冬.地下结构横截面地震反应拟静力计算方法对比研究[J].工程力学,2013(1):105-111.Liu Jingbo,Wang Wenhui,Zhao Dongdong.Comparison of the Pseudo-static Methods for Seismic Analysis of the Underground Structures[J].Engineering Mechanics,2013(1):105-111.
[6]李霞,杜修力,路德春,等.双向水平地震作用下复杂地铁车站振动台模型试验的方案研究[J].防灾减灾工程学报,2015(3):321-327.Li Xia,Du Xiuli,Lu Dechun,etc.Test Scheme Design for Shaking Table Model Test of the Seismic Responses of the Complex Subway Station under Two Horizontal Directions Seismic Ground Motions[J].Journal of Disaster Prevention and Mitigation Engineering,2015(3):321-327.
[7]Hashash Y M A,Hook J J,Schmidt B,etc.Seismic Design and Analysis of Underground Structures[J].Tunnelling and Underground Space Technology,2001(4):247-293.
[8]陈韧韧,张建民.地铁地下结构横断面简化抗震设计方法对比[J].岩土工程学报,2015(S1):134-141.Chen Renren,Zhang Jianmin.Comparison of Simplified Seismic Design Methods for Cross-section of Underground Structures of Subway[J].Chinese Journal of Geotechnical Engineering,2015(S1):134-141.
[9]崔光耀,刘维东,赵瑞华.隧道结构地震灾害评价等级及处治技术研究[J].铁道工程学报,2014(5):74-78,105.Cui Guangyao,Liu Weidong,Zhao Ruihua.Research on the Evaluation Grade of Seismic Damage and Disposal Technologies of Tunnel Structure[J].Journal of Railway Engineering Society,2014(5):74-78,105.
[10]GB 50909—2014,城市轨道交通结构抗震设计规范[S].GB 50909—2014,Code for Seismic Design of Urban Rail Transit Structures[S].
[11]陶连金,王文沛,张波.地铁地下结构抗震设计方法差异性规律研究[J].土木工程学报,2012(12):170-176.Tao Lianjin,Wang Wenpei,Zhang Bo.Difference Law Study of Seismic Design Methods for Subway Structures[J].China Civil Engineering Journal,2012(12):170-176.
[12]GB 50011—2010,建筑抗震设计规范[S].GB 50011—2010,Code for Seismic Design of Buildings[S].
[2]郑永来,杨林德,李文艺,等.地下结构抗震[M].上海:同济大学出版社,2011.Zheng Yonglai,Yang Linde,Li Wenyi,etc.Antiseismic Performance of Underground Structure[M].Shanghai:Tongji University Press,2011.
[3]曹万林,王敏.矩形钢管混凝土边框组合剪力墙及筒体结构抗震研究[J].工程力学,2008(1):58-70.Cao Wanlin,Wang Min.A Seismic Research of Composite Shear Wall and Core Walls with Rectangular Concrete Filled Steel Tube Columns[J].Engineering Mechanics,2008(1):58-70.
[4]彭斌,曹万林,王智慧.不同方向水平力下多腔钢管混凝土巨型柱抗震性能研究[J].世界地震工程,2012(2):90-97.Peng Bin,Cao Wanlin,Wang Zhihui.Research on Seismic Behavior of Multi-cell CFST Mega-Columns under Horizontal Forces in Different Directions[J].World Earthquake Engineering,2012(2):90-97.
[5]刘晶波,王文晖,赵冬冬.地下结构横截面地震反应拟静力计算方法对比研究[J].工程力学,2013(1):105-111.Liu Jingbo,Wang Wenhui,Zhao Dongdong.Comparison of the Pseudo-static Methods for Seismic Analysis of the Underground Structures[J].Engineering Mechanics,2013(1):105-111.
[6]李霞,杜修力,路德春,等.双向水平地震作用下复杂地铁车站振动台模型试验的方案研究[J].防灾减灾工程学报,2015(3):321-327.Li Xia,Du Xiuli,Lu Dechun,etc.Test Scheme Design for Shaking Table Model Test of the Seismic Responses of the Complex Subway Station under Two Horizontal Directions Seismic Ground Motions[J].Journal of Disaster Prevention and Mitigation Engineering,2015(3):321-327.
[7]Hashash Y M A,Hook J J,Schmidt B,etc.Seismic Design and Analysis of Underground Structures[J].Tunnelling and Underground Space Technology,2001(4):247-293.
[8]陈韧韧,张建民.地铁地下结构横断面简化抗震设计方法对比[J].岩土工程学报,2015(S1):134-141.Chen Renren,Zhang Jianmin.Comparison of Simplified Seismic Design Methods for Cross-section of Underground Structures of Subway[J].Chinese Journal of Geotechnical Engineering,2015(S1):134-141.
[9]崔光耀,刘维东,赵瑞华.隧道结构地震灾害评价等级及处治技术研究[J].铁道工程学报,2014(5):74-78,105.Cui Guangyao,Liu Weidong,Zhao Ruihua.Research on the Evaluation Grade of Seismic Damage and Disposal Technologies of Tunnel Structure[J].Journal of Railway Engineering Society,2014(5):74-78,105.
[10]GB 50909—2014,城市轨道交通结构抗震设计规范[S].GB 50909—2014,Code for Seismic Design of Urban Rail Transit Structures[S].
[11]陶连金,王文沛,张波.地铁地下结构抗震设计方法差异性规律研究[J].土木工程学报,2012(12):170-176.Tao Lianjin,Wang Wenpei,Zhang Bo.Difference Law Study of Seismic Design Methods for Subway Structures[J].China Civil Engineering Journal,2012(12):170-176.
[12]GB 50011—2010,建筑抗震设计规范[S].GB 50011—2010,Code for Seismic Design of Buildings[S].