动水压力对深水桥梁性能设计的影响
|
摘要
通过一个深水桥墩实例对中国与日本桥梁抗震规范的地震动水压力计算方法进行比较研究,分析规范关于动水压力计算的异同点,计算表明两者结果相差较大.对桥墩的动水压力进行数值模拟计算,考察动水压力沿深水桥梁高程的分布.为研究动水压力对桥梁整体结构动力特性的影响,以主跨260 m的牛根大桥为背景建立有限元计算模型,采用附加质量法进行计算.结果表明,附加质量法求得的位移和弯矩比不考虑动水作用的情况有较大增幅,也表明动水压力对桥梁的性能有较大的影响.在深水桥梁的性能设计理论与应用领域中,水与桥墩的相互作用问题有必要进行进一步的研究.
A comparative study was performed on the calculation methods of earthquake hydrodynamic pressure between Chinese and Japanese seismic codes of bridges through a calculation example of a deepwater pier,and the similarities and differences of both the methods were analyzed.A huge difference was obtained from both the results.The earthquake hydrodynamic pressure of a pier in deep water was calculated by numerical simulation and the distribution of pressure along the pier height was investigated.A finite element model of the 260-meter-span Ushine Bridge was built and an added mass method was applied to the model to study the influence of earthquake hydrodynamic pressure on the performance of the whole bridge.The results showed that the displacement and moment obtained by the added mass method was rather more than those without consideration of water.In the performance-based design theory of deepwater bridges and its application field,more studies were needed on the problem of the interaction between piers and water.
A comparative study was performed on the calculation methods of earthquake hydrodynamic pressure between Chinese and Japanese seismic codes of bridges through a calculation example of a deepwater pier,and the similarities and differences of both the methods were analyzed.A huge difference was obtained from both the results.The earthquake hydrodynamic pressure of a pier in deep water was calculated by numerical simulation and the distribution of pressure along the pier height was investigated.A finite element model of the 260-meter-span Ushine Bridge was built and an added mass method was applied to the model to study the influence of earthquake hydrodynamic pressure on the performance of the whole bridge.The results showed that the displacement and moment obtained by the added mass method was rather more than those without consideration of water.In the performance-based design theory of deepwater bridges and its application field,more studies were needed on the problem of the interaction between piers and water.
引文
[1]Construction Department of the Third Yangtze River Bridge inNanjing.Technical Summary ofthe Main Bridge ofthe ThirdYangtze River Bridge in Nanjing.Beijing:China Communica-tions Press,2005(南京长江第三大桥建设指挥部.南京长江第三大桥主桥技术总结.北京:人民交通出版社,2005)
[2]Zhang X G,Yuan H,Wu G M.General design of Su-TongBridge∥Proceedings of China Bridge Conference Hold by theBridge and Structure Subcommittee of China Road Society.Kunming,2004(张喜刚,袁洪,吴国民.苏通大桥总体设计∥中国公路学会桥梁和结构工程分会2004年全国桥梁学术会议论文集.昆明,2004)
[3]Zhong M Q,Yao X S,Pan Y S.Analysis and study on earth-quake hydrodynamic pressure of piersin Fengjie Changjiang High-way Bridge∥Proceedings ofthe1st Highway Science and Inno-vation High-Level Forum:Highway Design and Construction.Beijing,2001(钟明全,姚小松,潘亦苏.奉节长江公路大桥桥墩地震动水压力的分析研究∥第一届全国公路科技创新高层论坛论文集:公路设计与施工卷.北京,2001)
[4]The Ministry of Transport of the People’s Republic of China.JTJ004—89 Seismic Design Code of Highway Engineering.Bei-jing:China Communications Press,2003(中华人民共和国交通部.JTJ004—89公路工程抗震设计规范.北京:人民交通出版社,2003)
[5]Yoshida.Substructure design of Akashi Kaidyo Bridge.SoilFound,2003(10):23
[6]Xia Z H.Seismic Response Analysis of Long Span ContinuousRigid Frame Bridges[Dissertation].Chengdu:Southwest Jiao-tong University,2003(夏志华.大跨度连续刚构桥地震反应分析[学位论文].成都:西南交通大学,2003)
[7]Li H.Seismic response analysis of deep water pier under near-fault earthquake.Earthquake Resistant Eng Retrofitting,2006(3):83(李辉.近场地震作用下深水桥墩的地震响应分析.工程抗震与加固改造,2006(3):83)
[8]Zhang L X,Yang K.Theory and Application of Fluid Struc-ture Interaction.Beijing:Science Press,2004(张立翔,杨柯.流体结构互动理论及其应用.北京:科学出版社,2004)
[9]Japan Road Association.Road and Bridge Design and Explana-tion:Chapter V.Seismic Design.Tokyo:Japan Road Associa-tion,1996
[10]Report on Investigation of Earthquake Hydrodynamic PressureExperi ment.Honshu-Shikoku Bridge Construction Corporation,Institute of Foundation Technology,1995
[11]Chongqing Communications Research and Design Institute,TheMinistry of Transport of the People’s Republic of China.JTG/T B02-01—2008 Detailed Rules and Regulations of SeismicDesign of Highways and Bridges.Beijing:China Communica-tions Press,2008(重庆交通科研设计院,中华人民共和国交通运输部.JTG/TB02-01—2008公路桥梁抗震设计细则.北京:人民交通出版社,2008)
[12]The Ministry of Railways of the People s Republic of China.GB50111—2006 Seismic Design Code of Railway Engineering.Beijing:China Planning Press,2006(中华人民共和国铁道部.GB 50111—2006铁路工程抗震设计规范.北京:中国计划出版社,2006)
[2]Zhang X G,Yuan H,Wu G M.General design of Su-TongBridge∥Proceedings of China Bridge Conference Hold by theBridge and Structure Subcommittee of China Road Society.Kunming,2004(张喜刚,袁洪,吴国民.苏通大桥总体设计∥中国公路学会桥梁和结构工程分会2004年全国桥梁学术会议论文集.昆明,2004)
[3]Zhong M Q,Yao X S,Pan Y S.Analysis and study on earth-quake hydrodynamic pressure of piersin Fengjie Changjiang High-way Bridge∥Proceedings ofthe1st Highway Science and Inno-vation High-Level Forum:Highway Design and Construction.Beijing,2001(钟明全,姚小松,潘亦苏.奉节长江公路大桥桥墩地震动水压力的分析研究∥第一届全国公路科技创新高层论坛论文集:公路设计与施工卷.北京,2001)
[4]The Ministry of Transport of the People’s Republic of China.JTJ004—89 Seismic Design Code of Highway Engineering.Bei-jing:China Communications Press,2003(中华人民共和国交通部.JTJ004—89公路工程抗震设计规范.北京:人民交通出版社,2003)
[5]Yoshida.Substructure design of Akashi Kaidyo Bridge.SoilFound,2003(10):23
[6]Xia Z H.Seismic Response Analysis of Long Span ContinuousRigid Frame Bridges[Dissertation].Chengdu:Southwest Jiao-tong University,2003(夏志华.大跨度连续刚构桥地震反应分析[学位论文].成都:西南交通大学,2003)
[7]Li H.Seismic response analysis of deep water pier under near-fault earthquake.Earthquake Resistant Eng Retrofitting,2006(3):83(李辉.近场地震作用下深水桥墩的地震响应分析.工程抗震与加固改造,2006(3):83)
[8]Zhang L X,Yang K.Theory and Application of Fluid Struc-ture Interaction.Beijing:Science Press,2004(张立翔,杨柯.流体结构互动理论及其应用.北京:科学出版社,2004)
[9]Japan Road Association.Road and Bridge Design and Explana-tion:Chapter V.Seismic Design.Tokyo:Japan Road Associa-tion,1996
[10]Report on Investigation of Earthquake Hydrodynamic PressureExperi ment.Honshu-Shikoku Bridge Construction Corporation,Institute of Foundation Technology,1995
[11]Chongqing Communications Research and Design Institute,TheMinistry of Transport of the People’s Republic of China.JTG/T B02-01—2008 Detailed Rules and Regulations of SeismicDesign of Highways and Bridges.Beijing:China Communica-tions Press,2008(重庆交通科研设计院,中华人民共和国交通运输部.JTG/TB02-01—2008公路桥梁抗震设计细则.北京:人民交通出版社,2008)
[12]The Ministry of Railways of the People s Republic of China.GB50111—2006 Seismic Design Code of Railway Engineering.Beijing:China Planning Press,2006(中华人民共和国铁道部.GB 50111—2006铁路工程抗震设计规范.北京:中国计划出版社,2006)
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