软弱地基上隔震结构地震反应及隔震效果的预测方法研究
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摘要
基于软弱地基上隔震结构的动力反应特征,提出了软弱地基-隔震结构相互作用体系的动力特性简化分析方法,在此基础上建立了软弱地基条件下考虑SSI效应的水平向减震系数、隔震结构剪力及隔震层位移的简化预测方法,通过简化方法的计算结果与振动台模型试验结果、时程分析计算结果的对比分析,验证了提出的简化分析方法的可行性和易用性,对比分析结果同时表明简化方法得到的预测结果具有较理想的精度,能够合理反映软弱地基-隔震结构体系的动力相互作用效应,为评估软弱地基上SSI效应对隔震结构设计方案的影响提供了有效方法。
Based on the dynamic response characteristics of the isolated structure on the soft soil foundation,a simplified method for calculating the dynamic characteristics of the soft soil foundation-isolated structure interaction system is proposed.On this basis,the simplified predictive methods for seismic reduction factor,shear force of the isolated structure and the displacement of the isolation layer on the soft soil foundation are established by considering SSI effect.The results of the proposed methodology in this paper arecompared with the corresponding ones of shaking table model test and time history analysis.The results of comparison indicates that the proposed simplified method is practical and available.The results of the comparative analysis also show that the prediction results of the simplified method can accurately reflect the effect of the soft soil-isolated structure interaction system,presenting an effective method for evaluating the design scheme of the isolated structure on soft soil foundations.
Based on the dynamic response characteristics of the isolated structure on the soft soil foundation,a simplified method for calculating the dynamic characteristics of the soft soil foundation-isolated structure interaction system is proposed.On this basis,the simplified predictive methods for seismic reduction factor,shear force of the isolated structure and the displacement of the isolation layer on the soft soil foundation are established by considering SSI effect.The results of the proposed methodology in this paper arecompared with the corresponding ones of shaking table model test and time history analysis.The results of comparison indicates that the proposed simplified method is practical and available.The results of the comparative analysis also show that the prediction results of the simplified method can accurately reflect the effect of the soft soil-isolated structure interaction system,presenting an effective method for evaluating the design scheme of the isolated structure on soft soil foundations.
引文
[1]日本建筑学会著.隔震结构设计[M].刘文光,译.北京:地震出版社,2006:110—140.Architectural Institute of Japan.Recommendation for the Design of Base Isolated Buildings[M].Translated by Liu Wenguan.Beijing:Earthquake Press,2006:110—140.
[2]Zhuang Haiyang,Yu Xu,Zhu Chao,et al..Shaking table tests for the seismic response of a base-isolated structure with the SSI effect[J].Soil Dynamics and Earthquake Engineering,2014,67(6):208—218.
[3]于旭,庄海洋,朱超.软夹层地基上多层隔震结构模型振动台试验研究[J].振动与冲击,2015,34(24):109—115.Yu Xu,Zhuang Haiyang,Zhu Chao.Shaking table model test for multi-story isolated structure on softer interlayer foundation[J].Journal of Vibration and Shock,2015,34(24):109—115.
[4]于旭,宰金珉,王志华.铅芯橡胶支座隔震钢框架结构体系振动台模型试验研究[J].世界地震工程,2010,26(03):30—36.Yu Xu,Zai Jinming,Wang Zhihua.Shaking table tests on the model of a steel-framed structure system with lead core rubber bearing isolations[J].World Earthquake Engineering,2010,26(03):30—36.
[5]李昌平,刘伟庆,王曙光,等.软土地基上高层隔震结构模型振动台试验研究[J].建筑结构学报,2013,34(7):72—78.Li Changping,Liu Weiqing,Wang Shuguang,et al.Shaking table test on high-rise isolated structure on soft soil foundation[J].Journal of Building Structures,2013,34(7):72—78.
[6]FEMA P-750.NEHRP recommended seismic provisions for new buildings and other structure[S].Washington D.C.Building Seismic Safety Council,2009.
[7]Constantinou M C,Kneifati M C.Dynamics of soil-baseisolated-structure system[J].J.Struct.Eng.,1988,144(1):211—220.
[8]Spyrakos C C,Maniatakis Ch A,Koutromanos I A.Soilstructure interaction effects on base-isolated buildings founded on soil stratum[J].Engineering Structures,2009,31:729—737.
[9]Kyung Hwan Choa,Moon Kyum Kima,Yun Mook Lima,et al.Seismic response of base-isolated liquid storage tanks considering fluid-structure-soil interaction in time domain[J].Soil Dynamics and Earthquake Engineering,2004,24:839—852.
[10]李延涛.考虑土-结构动力相互作用的基础隔震与结构控制理论研究[D].天津:天津大学,2004.Li Yantao.Theoretical study of base isolation and structural control considering soil-structure interaction[D].Tianjin:Tianjin University,2004.
[11]项征.地震作用下软土地基基础隔震结构体系的动力反应分析[D].上海:同济大学,2006.Xiang Zheng.Analysis on dynamic response of base isolated structure system on soft soil foundation under earthquake[D].Shanghai:Tongji University,2006.
[12]张之颖,王洪卫,段学刚,等.地基-结构动力相互作用对基础隔震效果的影响[J].工业建筑,2007,37(10):54—57.Zhang Zhiying,Wang Hongwei,Duan Xuegang,et al.Effects of dynamic soil-structure interaction on base isolated structure[J].Industrial Buildings,2007,37(10):54—57.
[13]于旭,庄海洋,朱超.基于模型试验的软夹层地基与刚性地基上隔震结构体系耗能特性分析[J].振动与冲击,2016,35(10):76—85.Yu Xu,Zhuang Haiyang,Zhu Chao.Analysis on energy dissipation of isolated structure on rigid foundation and soft interlayer soil foundation based on model test[J].Journal of Vibration and Shock,2016,35(10):76—85.
[14]Sivanovic S.Seismic response of an instrumented reinforced concrete building founded on piles[C].Proc.12WCEE,Auckland,New Zealand,2000.
[15]刘文光.橡胶隔震支座力学性能及隔震结构地震反应分析研究[D].北京:北京工业大学,2003.Liu Wenguang.Study on mechanical properties of rubber bearings and seismic response of isolated structure[D].Beijing:Beijing University of Technology,2003.
[16]Veletsos A S,Verbic B.Vibration of viscoelastic Foundation[J].Earthquake Engineering and Structural Dynamics,1973,2(1):87—102.
[17]Wolf J P.Dynamic soil-structure interaction[M].Englewood Cliffs,New Jersey:Prentice-Hall,1985:12—17.
[18]Bielak J.Dynamic behaviour of structures with embedded foundations[J].International Journal of Earthquake Engineering and Structural Dynamics,1975,3(3):259—274.
[19]Marvas A,George Mylonakis,Dimitris L Karabalis.Simplified discrete systems for dynamic analysis of structures on footings and piles[J].Soil Dynamic and Earthquake Engineering,2014,6(1):29—39.
[20]Veletsos A S,Nair V V.Seismic interaction of structures on hysteretic foundations[J].J.Structure Engineering,ASCE,1975,101(1):109—129.
[21]陈跃庆.结构-地基动力相互作用体系振动台试验研究[D].上海:同济大学,2001.Chen Yueqing.Shaking table test for soil structure interaction system[D].Shanghai:Tongji University,2001.
[22]王建华,智胜英.低应变条件下桩土相互作用的阻尼系数[J].岩石力学与工程学报,2007,26(9):1801—1808.Wang Jianhua,Zhi Shengying.Damping coefficients of pile-soil interaction with low strain[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1801—1808.
[23]李昌平.考虑土-结构相互作用的隔震结构试验与理论研究[D].南京:南京工业大学,2013Li Changping.Experimental and theoretical researches of isolated structures considering soil-Structure interaction[D].Nanjing:Nanjing University of Technology,2013.
[2]Zhuang Haiyang,Yu Xu,Zhu Chao,et al..Shaking table tests for the seismic response of a base-isolated structure with the SSI effect[J].Soil Dynamics and Earthquake Engineering,2014,67(6):208—218.
[3]于旭,庄海洋,朱超.软夹层地基上多层隔震结构模型振动台试验研究[J].振动与冲击,2015,34(24):109—115.Yu Xu,Zhuang Haiyang,Zhu Chao.Shaking table model test for multi-story isolated structure on softer interlayer foundation[J].Journal of Vibration and Shock,2015,34(24):109—115.
[4]于旭,宰金珉,王志华.铅芯橡胶支座隔震钢框架结构体系振动台模型试验研究[J].世界地震工程,2010,26(03):30—36.Yu Xu,Zai Jinming,Wang Zhihua.Shaking table tests on the model of a steel-framed structure system with lead core rubber bearing isolations[J].World Earthquake Engineering,2010,26(03):30—36.
[5]李昌平,刘伟庆,王曙光,等.软土地基上高层隔震结构模型振动台试验研究[J].建筑结构学报,2013,34(7):72—78.Li Changping,Liu Weiqing,Wang Shuguang,et al.Shaking table test on high-rise isolated structure on soft soil foundation[J].Journal of Building Structures,2013,34(7):72—78.
[6]FEMA P-750.NEHRP recommended seismic provisions for new buildings and other structure[S].Washington D.C.Building Seismic Safety Council,2009.
[7]Constantinou M C,Kneifati M C.Dynamics of soil-baseisolated-structure system[J].J.Struct.Eng.,1988,144(1):211—220.
[8]Spyrakos C C,Maniatakis Ch A,Koutromanos I A.Soilstructure interaction effects on base-isolated buildings founded on soil stratum[J].Engineering Structures,2009,31:729—737.
[9]Kyung Hwan Choa,Moon Kyum Kima,Yun Mook Lima,et al.Seismic response of base-isolated liquid storage tanks considering fluid-structure-soil interaction in time domain[J].Soil Dynamics and Earthquake Engineering,2004,24:839—852.
[10]李延涛.考虑土-结构动力相互作用的基础隔震与结构控制理论研究[D].天津:天津大学,2004.Li Yantao.Theoretical study of base isolation and structural control considering soil-structure interaction[D].Tianjin:Tianjin University,2004.
[11]项征.地震作用下软土地基基础隔震结构体系的动力反应分析[D].上海:同济大学,2006.Xiang Zheng.Analysis on dynamic response of base isolated structure system on soft soil foundation under earthquake[D].Shanghai:Tongji University,2006.
[12]张之颖,王洪卫,段学刚,等.地基-结构动力相互作用对基础隔震效果的影响[J].工业建筑,2007,37(10):54—57.Zhang Zhiying,Wang Hongwei,Duan Xuegang,et al.Effects of dynamic soil-structure interaction on base isolated structure[J].Industrial Buildings,2007,37(10):54—57.
[13]于旭,庄海洋,朱超.基于模型试验的软夹层地基与刚性地基上隔震结构体系耗能特性分析[J].振动与冲击,2016,35(10):76—85.Yu Xu,Zhuang Haiyang,Zhu Chao.Analysis on energy dissipation of isolated structure on rigid foundation and soft interlayer soil foundation based on model test[J].Journal of Vibration and Shock,2016,35(10):76—85.
[14]Sivanovic S.Seismic response of an instrumented reinforced concrete building founded on piles[C].Proc.12WCEE,Auckland,New Zealand,2000.
[15]刘文光.橡胶隔震支座力学性能及隔震结构地震反应分析研究[D].北京:北京工业大学,2003.Liu Wenguang.Study on mechanical properties of rubber bearings and seismic response of isolated structure[D].Beijing:Beijing University of Technology,2003.
[16]Veletsos A S,Verbic B.Vibration of viscoelastic Foundation[J].Earthquake Engineering and Structural Dynamics,1973,2(1):87—102.
[17]Wolf J P.Dynamic soil-structure interaction[M].Englewood Cliffs,New Jersey:Prentice-Hall,1985:12—17.
[18]Bielak J.Dynamic behaviour of structures with embedded foundations[J].International Journal of Earthquake Engineering and Structural Dynamics,1975,3(3):259—274.
[19]Marvas A,George Mylonakis,Dimitris L Karabalis.Simplified discrete systems for dynamic analysis of structures on footings and piles[J].Soil Dynamic and Earthquake Engineering,2014,6(1):29—39.
[20]Veletsos A S,Nair V V.Seismic interaction of structures on hysteretic foundations[J].J.Structure Engineering,ASCE,1975,101(1):109—129.
[21]陈跃庆.结构-地基动力相互作用体系振动台试验研究[D].上海:同济大学,2001.Chen Yueqing.Shaking table test for soil structure interaction system[D].Shanghai:Tongji University,2001.
[22]王建华,智胜英.低应变条件下桩土相互作用的阻尼系数[J].岩石力学与工程学报,2007,26(9):1801—1808.Wang Jianhua,Zhi Shengying.Damping coefficients of pile-soil interaction with low strain[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1801—1808.
[23]李昌平.考虑土-结构相互作用的隔震结构试验与理论研究[D].南京:南京工业大学,2013Li Changping.Experimental and theoretical researches of isolated structures considering soil-Structure interaction[D].Nanjing:Nanjing University of Technology,2013.