随机地震激励作用下水中悬浮隧道锚索的动力响应
|
摘要
文章采用Morison公式,考虑水体对结构动力响应的影响,建立地震作用下水中悬浮隧道锚索的非线性动力方程;运用振型分解法求解结构动力方程系列解,等效线性化处理动力方程非线性项,采用虚拟激励模拟随机地震输入,数值模拟随机地震下水中悬浮隧道锚索的动力响应,给出锚索的位移和速度功率谱;通过位移和速度功率谱分析可得随机地震激励作用下水中悬浮隧道锚索的动力行为。
Nonlinear dynamic equation of anchor cable of submerged floating tunnel(SFT) was established,where Morison formula was applied to taking the influence of water upon structure dynamic response into consideration.The series solutions of structure dynamic equation were obtained based on modal decomposition method,and the nonlinear terms of dynamic equation were simplified by equivalent linearization method.The dynamic response of SFT's anchor cable to random seismic excitation was simulated by virtual and motivating method,and the displacement and velocity power spectrums of anchor cable were presented.The dynamic behavior of SFT's anchor cable under random seismic excitation was achieved by analyzing the displacement and the velocity power spectra.
Nonlinear dynamic equation of anchor cable of submerged floating tunnel(SFT) was established,where Morison formula was applied to taking the influence of water upon structure dynamic response into consideration.The series solutions of structure dynamic equation were obtained based on modal decomposition method,and the nonlinear terms of dynamic equation were simplified by equivalent linearization method.The dynamic response of SFT's anchor cable to random seismic excitation was simulated by virtual and motivating method,and the displacement and velocity power spectrums of anchor cable were presented.The dynamic behavior of SFT's anchor cable under random seismic excitation was achieved by analyzing the displacement and the velocity power spectra.
引文
[1]陈建云,孙胜男,王变革.水下悬浮隧道锚索的动力响应分析[J].计算力学学报,2008,25(4):488-493.
[2]麦继婷,杨显成,关宝树.悬浮隧道在波流作用下的响应分析[J].铁道学报,2008,30(2):118-123.
[3]Di Pilato M,Perotti F,Fogazzi P.3Ddynamic response of sub-merged floating tunnels under seismic and hydrodynamic excita-tion[J].Engineering Structures,2008,30:268-281.
[4]Kunisu H,Mizuno S,Mizuno Y,et al.Study on submergedfloating tunnel characteristics under the wave condition[C]//ISOPE Proceedings of the International Offshore and Polar En-gineering Conference,1994:27-32.
[5]Remseth S,Leira B,Okstad K,et al.Dynamic response andfluid/structure interact ion of submerged floating tunnels[J].Computers and Structures,1999,72(3):659-687.
[6]Brancaleoni F,Castellani A,Dasdia P.The response of sub-merged tunnels to their environment[J].Engineering Struc-tures,1989,11(1):48-62.
[7]葛斐,龙旭,王雷,等.水中悬浮隧道管段锚索耦合模型涡激震动研究[J].中国公路学报,2009,22(3):83-100.
[8]陈建云,王变革,孙胜男.悬浮隧道锚索的涡激动力响应分析[J].工程力学,2007,24(10):186-192.
[9]陈建云,孙胜男,苏志彬.水流作用下悬浮隧道锚索的动力响应[J].工程力学,2008,25(10):229-234.
[10]孙胜男.悬浮隧道动力响应分析[D].辽宁大连:大连理工大学,2008.
[11]竺艳蓉.海洋工程波浪力学[M].天津:天津大学出版社,1991:70-95.
[12]高玉峰,张建.地震危险性分析研究[M].北京:科学出版社,2007:110-145.
[13]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004:150-200.
[14]唐友刚.高等结构动力学[M].天津:天津大学出版社,2002:40-80.
[15]Tagata G.Garmonically forced finit amplitude vibration ofa string[J].Journal of Sound and Vibration,1977,51(4):483-492.
[16]韩晓双.导管架海洋平台地震响应研究[D].辽宁大连:大连理工大学,2008.
[17]王建国,李雪峰.斜拉桥地震响应振动控制Benchmark问题研究[J].合肥工业大学学报:自然科学版,2008,31(6):932-936.
[2]麦继婷,杨显成,关宝树.悬浮隧道在波流作用下的响应分析[J].铁道学报,2008,30(2):118-123.
[3]Di Pilato M,Perotti F,Fogazzi P.3Ddynamic response of sub-merged floating tunnels under seismic and hydrodynamic excita-tion[J].Engineering Structures,2008,30:268-281.
[4]Kunisu H,Mizuno S,Mizuno Y,et al.Study on submergedfloating tunnel characteristics under the wave condition[C]//ISOPE Proceedings of the International Offshore and Polar En-gineering Conference,1994:27-32.
[5]Remseth S,Leira B,Okstad K,et al.Dynamic response andfluid/structure interact ion of submerged floating tunnels[J].Computers and Structures,1999,72(3):659-687.
[6]Brancaleoni F,Castellani A,Dasdia P.The response of sub-merged tunnels to their environment[J].Engineering Struc-tures,1989,11(1):48-62.
[7]葛斐,龙旭,王雷,等.水中悬浮隧道管段锚索耦合模型涡激震动研究[J].中国公路学报,2009,22(3):83-100.
[8]陈建云,王变革,孙胜男.悬浮隧道锚索的涡激动力响应分析[J].工程力学,2007,24(10):186-192.
[9]陈建云,孙胜男,苏志彬.水流作用下悬浮隧道锚索的动力响应[J].工程力学,2008,25(10):229-234.
[10]孙胜男.悬浮隧道动力响应分析[D].辽宁大连:大连理工大学,2008.
[11]竺艳蓉.海洋工程波浪力学[M].天津:天津大学出版社,1991:70-95.
[12]高玉峰,张建.地震危险性分析研究[M].北京:科学出版社,2007:110-145.
[13]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004:150-200.
[14]唐友刚.高等结构动力学[M].天津:天津大学出版社,2002:40-80.
[15]Tagata G.Garmonically forced finit amplitude vibration ofa string[J].Journal of Sound and Vibration,1977,51(4):483-492.
[16]韩晓双.导管架海洋平台地震响应研究[D].辽宁大连:大连理工大学,2008.
[17]王建国,李雪峰.斜拉桥地震响应振动控制Benchmark问题研究[J].合肥工业大学学报:自然科学版,2008,31(6):932-936.
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