不同抗震设防RC框架结构抗倒塌能力的研究
|
摘要
地震作用下建筑结构的抗倒塌能力是基于性能抗震设计的核心目标。建筑结构需要足够的抗倒塌安全储备,以避免大震或特大地震的倒塌破坏。我国现行抗震设计尚缺乏大震抗倒塌定量设计方法和抗地震倒塌能力的定量评价指标。该文基于IDA的结构抗倒塌易损性分析方法,定量评价了按现行规范设计的不同抗震设防烈度多层RC框架结构的抗地震倒塌能力和抗倒塌安全储备,讨论了轴压比和倒塌机制对RC框架结构抗地震倒塌能力的影响,并根据分析结果提出了有关建议。
Collapse safety is the most important objective of performance-based aseismic design.Buildings should have an enough safety margin to avoid collapse subjected to a severe or mega earthquake.However,current Chinese seismic design code for building structures does not provide an explicit design or a quantitative evaluation method for collapse-resistant capacity.In this paper,the collapse-resistant capacities and safety margins against collapse of multi-story reinforced concrete(RC) frames with different seismic fortification levels are quantitatively evaluated,with a collapse fragility analysis based on an incremental dynamic analysis(IDA).The influences of the axial compression ratio and the failure mode to the collapse-resistant capacity are discussed,and suggestions are proposed to improve the current design.
Collapse safety is the most important objective of performance-based aseismic design.Buildings should have an enough safety margin to avoid collapse subjected to a severe or mega earthquake.However,current Chinese seismic design code for building structures does not provide an explicit design or a quantitative evaluation method for collapse-resistant capacity.In this paper,the collapse-resistant capacities and safety margins against collapse of multi-story reinforced concrete(RC) frames with different seismic fortification levels are quantitatively evaluated,with a collapse fragility analysis based on an incremental dynamic analysis(IDA).The influences of the axial compression ratio and the failure mode to the collapse-resistant capacity are discussed,and suggestions are proposed to improve the current design.
引文
[1]叶列平,曲哲,陆新征,冯鹏.提高建筑结构抗地震倒塌能力的设计思想与方法[J].建筑结构学报,2008,29(4):42―50.Ye Lieping,Qu Zhe,Lu Xinzheng,Feng Peng.Collapse prevention of building structures:A lesson from the Wenchuan earthquake[J].Journal of Building Structures,2008,29(4):42―50.(in Chinese)
[2]GB 50011-2001,建筑抗震设计规范[S].2001.GB 50011-2001,Code for seismic design of buildings[S].2001.(in Chinese)
[3]清华大学土木结构组,西南交通大学土木结构组,北京交通大学土木结构组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1―9.Civil and structural groups of Tsinghua University,Xinan Jiaotong University,Beijing Jiaotong University.Analysis on building seismic damage in Wenchuan earthquake[J].Journal of Building Structures,2008,29(4):1―9.(in Chinese)
[4]陈肇元.跋——汶川地震教训与震后建筑物重建、加固策略[C].汶川地震——建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008.Chen Zhaoyuan.Postscruip:lessons from Wenchuan eauthquake and strategies for post-earthquake reconstruction and retrofit[C].Wenchuan earthquake:Report of Building Seismic Damage Survey and Post-earthquake Reconstruction Analysis.Beijing:China Architecture and Building Press,2008.(in Chinese)
[5]欧进萍,李惠,吴斌,郭安薪.地震工程灾害与防御(II)——建筑抗震设防规范分析与比较[C].汶川地震——建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008.Ou Jinping,Li Hui,Wu Bin,Guo Anxin.Earthquake engineering disaster and fortification(II):analysis and comparison of seismic design code[C].Wenchuan earthquake:Report of Building Seismic Damage Survey and Post-earthquake Reconstruction Analysis.Beijing:China Architecture and Building Press,2008.(in Chinese)
[6]潘鹏,曹海韵,潘振华,钱稼茹.中日建筑抗震设防标准和抗震设计方法比较[C].汶川地震——建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008.Pan Peng,Cao Haiyun,Pan Zhenhua,Qian Jiaru.Comparison of seismic fortification level and seismic design between China and Japan[C].Wenchuan earthquake:Report of Building Seismic Damage Survey and Post-earthquake Reconstruction Analysis.Beijing:China Architecture and Building Press,2008.(in Chinese)
[7]Baker J W,Cornell C A.A vector-valued ground motion intensity measure consisting of spectral acceleration and epsilon[J].Earthquake Engineering and Structure Dynamics,2005,34:1193―1217.
[8]Zareian F,Krawinkler H.Assessment of probability of collapse and design for collapse safety[J].Earthquake Engineering and Structure Dynamics,2007,36:1901―1914.
[9]Kircher C A,Heintz J A.The ATC-63 Project[J].Building Safety Journal,2008:40―43.
[10]Applied Technology Council,Federal Emergency Management Agency.Quantification of building seismic performance factors[R].America:FEMA,2008.
[11]叶列平,马千里,缪志伟,陆新征.抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9―22.Ye Lieping,Ma Qianli,Miao Zhiwei,Lu Xinzheng.Study on earthquake intensities for seismic analysis[J].Earthquake Engineering and Engineering Vibration,2009,29(4):9―22.(in Chinese)
[12]马千里.钢筋混凝土框架结构基于能量抗震设计方法研究[D].北京:清华大学,2009.Ma Qianli.Study on energy-based seismic design methodology and application for RC frames[D].Beijing:Tsinghua University,2009.(in Chinese)
[13]Bazzurro P,Cornell C A,Shome N.Three proposals for characterizing MDOF non-linear seismic response[J].Journal of Structural Engineering,1998,124(11):1281―1289.
[14]Vamvatsikos D,Cornell C A.Incremental dynamic analysis[J].Earthquake Engineering and Structure Dynamics,2002,31(3):491―514.
[15]汪训流,陆新征,叶列平.往复荷载下钢筋混凝土柱受力性能的数值模拟[J].工程力学,2007,24(12):76―81.Wang Xunliu,Lu Xinzheng,Ye Lieping.Numerical simulation for the hysteresis behavior of RC columns under cyclic loads[J].Engineering Mechanics,2007,24(12):76―81.(in Chinese)
[16]叶列平,陆新征,马千里,汪训流,缪志伟.混凝土结构抗震非线性分析模型、方法及算例[J].工程力学,2006,23(增刊II):131―140.Ye Lieping,Lu Xinzheng,Ma Qianli,Wang Xunliu,Miao Zhiwei.Seismic nonlinear analytical models,methods and examples for concrete structures[J].Engineering Mechanics,2006,23(Sup.II):131―140.(in Chinese)
[17]Lu X Z,Lin X C,Ma Y H,Li Y,Ye L P.Numerical simulation for the progressive collapse of concrete building due to earthquake[C].Proceedings of the 14th World Conference on Earthquake Engineering.Beijing,China,CDROM,2008.
[2]GB 50011-2001,建筑抗震设计规范[S].2001.GB 50011-2001,Code for seismic design of buildings[S].2001.(in Chinese)
[3]清华大学土木结构组,西南交通大学土木结构组,北京交通大学土木结构组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1―9.Civil and structural groups of Tsinghua University,Xinan Jiaotong University,Beijing Jiaotong University.Analysis on building seismic damage in Wenchuan earthquake[J].Journal of Building Structures,2008,29(4):1―9.(in Chinese)
[4]陈肇元.跋——汶川地震教训与震后建筑物重建、加固策略[C].汶川地震——建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008.Chen Zhaoyuan.Postscruip:lessons from Wenchuan eauthquake and strategies for post-earthquake reconstruction and retrofit[C].Wenchuan earthquake:Report of Building Seismic Damage Survey and Post-earthquake Reconstruction Analysis.Beijing:China Architecture and Building Press,2008.(in Chinese)
[5]欧进萍,李惠,吴斌,郭安薪.地震工程灾害与防御(II)——建筑抗震设防规范分析与比较[C].汶川地震——建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008.Ou Jinping,Li Hui,Wu Bin,Guo Anxin.Earthquake engineering disaster and fortification(II):analysis and comparison of seismic design code[C].Wenchuan earthquake:Report of Building Seismic Damage Survey and Post-earthquake Reconstruction Analysis.Beijing:China Architecture and Building Press,2008.(in Chinese)
[6]潘鹏,曹海韵,潘振华,钱稼茹.中日建筑抗震设防标准和抗震设计方法比较[C].汶川地震——建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008.Pan Peng,Cao Haiyun,Pan Zhenhua,Qian Jiaru.Comparison of seismic fortification level and seismic design between China and Japan[C].Wenchuan earthquake:Report of Building Seismic Damage Survey and Post-earthquake Reconstruction Analysis.Beijing:China Architecture and Building Press,2008.(in Chinese)
[7]Baker J W,Cornell C A.A vector-valued ground motion intensity measure consisting of spectral acceleration and epsilon[J].Earthquake Engineering and Structure Dynamics,2005,34:1193―1217.
[8]Zareian F,Krawinkler H.Assessment of probability of collapse and design for collapse safety[J].Earthquake Engineering and Structure Dynamics,2007,36:1901―1914.
[9]Kircher C A,Heintz J A.The ATC-63 Project[J].Building Safety Journal,2008:40―43.
[10]Applied Technology Council,Federal Emergency Management Agency.Quantification of building seismic performance factors[R].America:FEMA,2008.
[11]叶列平,马千里,缪志伟,陆新征.抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9―22.Ye Lieping,Ma Qianli,Miao Zhiwei,Lu Xinzheng.Study on earthquake intensities for seismic analysis[J].Earthquake Engineering and Engineering Vibration,2009,29(4):9―22.(in Chinese)
[12]马千里.钢筋混凝土框架结构基于能量抗震设计方法研究[D].北京:清华大学,2009.Ma Qianli.Study on energy-based seismic design methodology and application for RC frames[D].Beijing:Tsinghua University,2009.(in Chinese)
[13]Bazzurro P,Cornell C A,Shome N.Three proposals for characterizing MDOF non-linear seismic response[J].Journal of Structural Engineering,1998,124(11):1281―1289.
[14]Vamvatsikos D,Cornell C A.Incremental dynamic analysis[J].Earthquake Engineering and Structure Dynamics,2002,31(3):491―514.
[15]汪训流,陆新征,叶列平.往复荷载下钢筋混凝土柱受力性能的数值模拟[J].工程力学,2007,24(12):76―81.Wang Xunliu,Lu Xinzheng,Ye Lieping.Numerical simulation for the hysteresis behavior of RC columns under cyclic loads[J].Engineering Mechanics,2007,24(12):76―81.(in Chinese)
[16]叶列平,陆新征,马千里,汪训流,缪志伟.混凝土结构抗震非线性分析模型、方法及算例[J].工程力学,2006,23(增刊II):131―140.Ye Lieping,Lu Xinzheng,Ma Qianli,Wang Xunliu,Miao Zhiwei.Seismic nonlinear analytical models,methods and examples for concrete structures[J].Engineering Mechanics,2006,23(Sup.II):131―140.(in Chinese)
[17]Lu X Z,Lin X C,Ma Y H,Li Y,Ye L P.Numerical simulation for the progressive collapse of concrete building due to earthquake[C].Proceedings of the 14th World Conference on Earthquake Engineering.Beijing,China,CDROM,2008.
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