改变框架-核心筒结构剪力调整策略对其抗震性能影响的研究
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摘要
框架-核心筒体系是超高层结构的常用结构体系之一。我国规范对框架-核心筒结构设计时的框架剪力做了相关的调整规定,但其在超高层结构中的适用性有待进一步研究。该文对比了中美规范的相关规定,并以一实际超高层建筑为例,改变其剪力调整策略得到新设计方案。并建立新、旧两方案的精细有限元模型,进行了大震弹塑性分析和特大震抗倒塌能力分析。分析结果表明:改变剪力调整策略的新模型设计难度降低,抗大震性能与满足中国规范的原模型相当,且其抗特大震倒塌能力更优。研究结果可以为超高层框架-核心筒结构的设计提供参考。
The frame-core-tube structural system is one of the common structural systems used in supertall buildings.While a shear adjustment regulation for the frame of a frame-core tube structure has been specified in related Chinese codes,its applicability in supertall buildings needs to be further studied.Similar regulations in the codes of China and the United States are compared in this work.Furthermore,based on an actual supertall building,a new design is proposed by changing the shear adjustment strategy.Then the refined finite element(FE) models of both original design and new one are established.And both nonlinear time history analysis(THA) under the maximum considered earthquake(MCE) and earthquake-induced collapse analysis are performed for these two models.The results indicate that:compared with the original design,the new one,whose shear adjustment strategy is different,has a lower design difficulty,a similar aseismic performance under MCE,and a higher anti-collapse resistance.The results can provide a reference for the design of supertall frame-core tube structures.
The frame-core-tube structural system is one of the common structural systems used in supertall buildings.While a shear adjustment regulation for the frame of a frame-core tube structure has been specified in related Chinese codes,its applicability in supertall buildings needs to be further studied.Similar regulations in the codes of China and the United States are compared in this work.Furthermore,based on an actual supertall building,a new design is proposed by changing the shear adjustment strategy.Then the refined finite element(FE) models of both original design and new one are established.And both nonlinear time history analysis(THA) under the maximum considered earthquake(MCE) and earthquake-induced collapse analysis are performed for these two models.The results indicate that:compared with the original design,the new one,whose shear adjustment strategy is different,has a lower design difficulty,a similar aseismic performance under MCE,and a higher anti-collapse resistance.The results can provide a reference for the design of supertall frame-core tube structures.
引文
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[19]曹倩,汪洋,赵宏.复杂高层结构体系二道防线的探讨[J].建筑结构,2011, 41(增刊1):331-335.Cao Qian, Wang Yang, Zhao Hong. Discussion on thedual defense system applied in structurally complicated high-rise building[J]. Building Structure,2011,41(Suppl1):331-335.(in Chinese)
[20]王焕诚.考虑剪力分担率的钢框架组合墙结构安全性探析[J].建筑安全,2009, 24(9):51-52.Wang Huancheng. Safety analysis of steel frame-composite wall structure considering shear distribution ratio[J]. Construction Safety, 2009, 24(9):51-52.(in Chinese)
[21]Lu X, Ye L P, Lu X Z, et al. An improved ground motion intensity measure for super high-rise buildings[J],Science China Technological Sciences, 2013, 56(6):1525-1533.
[22]Lu X, Lu X Z, Zhang W K, et al. Collapse simulation of a super high-rise building subjected to extremely strong earthquakes[J]. Science China Technological Sciences,2011, 54(10):2549-2560.
[23]Lu X Z,Lu X,Guan H,et al. Earthquake-induced collapse simulation of a supertalli mega-braced frame-core tube building[J]. Journal of Constructional Steel Research,2013, 82:59-71.
[24]Lu X,Lu X Z,Guan H,et al. Collapse simulation of reinforced concrete high-rise building induced by extreme earthquakes[J]. Earthquake Engineering&Structural Dynamics, 2013, 42(5):705-723.
[25]Lu X,Lu X Z,Guan H, et al. Application of earthquake-induced collapse analysis in design optimization of a supertall building[J]. Structural Design of Tall&Special Buildings, 2016, 25(17):926-946.
[26]陆新征,蒋庆,缪志伟,等.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2015.Lu Xinzheng,Jiang Qing, Miao Zhiwei,et al.Elasto-plastic analysis of buildings against earthquake[M]. Beijing:China Architecture&Building Press, 2015.(in Chinese)
[27]GB 50009-2012,建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.GB 50009-2012, Load code for the design of building structures[S]. Beijing:China Architecture&Building Press, 2012.(in Chinese)
[28]FEMA P695, Quantification of building seismic performance factors[R]. Washington, DC:Federal Emergency Management Agency, 2009.
[29]施炜,叶列平,陆新征,等.不同抗震设防RC框架结构抗倒塌能力的研究[J].工程力学,2011,28(03):41-48.Shi Wei, Ye Lieping, Lu Xinzheng, et al. Study on the collapse-resistant capacity of RC frames with different seismic fortification levels[J]. Engineering Mechanics,2011, 28(03):41-48.(in Chinese)
[30]陆新征,叶列平.基于IDA分析的结构抗地震倒塌能力研究[J].工程抗震与加固改造,2010, 32(1):13-18.Lu Xinzheng, Ye Lieping. Study on the seismic collapse resistance of structural system[J]. Earthquake Resistant Engineering and Retrofitting, 2010, 32(1):13-18.(in Chinese)
[31]吕西林,苏宁粉,周颖.复杂高层结构基于增量动力分析法的地震易损性分析[J].地震工程与工程振动,2012, 32(5):19-25.Lu Xilin, Su Ningfen, Zhou Ying. IDA-based seismic fragility analysis of a complex high-rise structure[J].Journal of Earthquake Engineering and Engineering Vibration, 2012, 32(5):19-25.(in Chinese)
[32]周颖,吕西林,卜一.增量动力分析法在高层混合结构性能评估中的应用[J].同济大学学报(自然科学版),2010, 38(2):183-187.Zhou Ying, Lu Xilin, Bo Yi. Application of incremental dynamic analysis to seismic evaluation of hybrid structure[J]. Journal of Tongji University(Natural Science),2010, 38(2):183-187.(in Chinese)
[33]Alwaeli W, Mwafy A, Pilakoutas K, et al. A methodologyfor defining seismic scenario-structure-based limit state criteria for RC high-rise wall buildings using net drift[J].Earthquake Engineering&Structural Dynamics, 2017,46(8):1325-1344.
[34]Harrington C C,Liel A B. Collapse assessment of moment frame buildings, considering vertical ground shaking[J]. Earthquake Engineering&Structural Dynamics, 2016, 45(15):2475-2493.
[35]白久林,欧进萍.基于IDA方法的钢筋混凝土结构失效模式优化[J].工程力学,2011,28(增刊2):198-203.Bai Jiulin, Ou Jinping. Optimization of failure modes for reinforced concrete buildings based on IDA method[J].Engineering Mechanics, 2011, 28(SupplⅡ):198-203.(in Chinese)
[2]卢啸.超高巨柱-核心筒-伸臂结构地震灾变及抗震性能研究[D].北京:清华大学,2013.Lu Xiao. Study on the collapse simulation and seismic performance of super tall mega column-core tube-outrigger buildings[D]. Beijing:Tsinghua University, 2013.(in Chinese)
[3]范重,马万航,赵红,等.超高层框架-核心筒结构体系技术经济性研究[J].施工技术,2015, 44(20):1-10.Fan Zhong, Ma Wanhang, Zhao Hong, et al. Research on the structural and economical efficiency of super high-rise frame-core wall systems[J]. Construction Technology, 2015, 44(20):1-10.(in Chinese)
[4]GB 50011-2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB 50011-2010, Code for seismic design of buildings[S]. Beijing:China Architecture&Building Press, 2010.(in Chinese)
[5]JGJ 3-2010,高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010.JGJ 3-2010,Technical specification for concrete structures of tall building[S]. Beijing:China Architecture&Building Press, 2010.(in Chinese)
[6]扶长生,张小勇,周立浪.框架-核心筒结构体系及其地震剪力分担比[J].建筑结构,2015, 45(4):1-8.Fu Changsheng, Zhang Xiaoyong, Zhou Lilang.Frame-core wall structural system and seismic shear distribution ratio[J]. Building Structure, 2015, 45(4):1-8.(in Chinese)
[7]安东亚,周德源,李亚明.框架-核心筒结构双重抗震防线研究综述[J].结构工程师,2015, 31(1):191-199.An dongya, Zhou deyuan, Li yaming. Double earthquake fortification lines of frame-core tube structure:state-of-the-art[J]. Structural Engineers, 2015, 31(1):191-199.(in Chinese)
[8]建质[2015]67号,超限高层建筑工程抗震设防专项审查技术要点[S].北京:中华人民共和国住房和城乡建设部,2015.Jianzhi[2015]No.67, Technical points of special inspection for seismic fortification of overrun high-rise buildings[S]. Beijing:Ministry of Housing and Urban-Rural Development of the People's Republic of China, 2015.(in Chinese)
[9]UBC 1997, Uniform building code[S]. Whittier CA:International Conference of Building Officials, 1997.
[10]IBC 2000, International building code[S]. Falls Church VA:International Code Council, Inc, 2000.
[11]IBC 2003, International building code[S]. Falls Church VA:International Code Council, Inc, 2003.
[12]ASCE 7-05, Minimum design loads for buildings and other structures[S]. Reston, Virginia:American Society of Civil Engineers, 2005.
[13]ASCE 7-10, Minimum design loads for buildings and other structures[S]. Reston, Virginia:American Society of Civil Engineers, 2010.
[14]IBC 2006, International building code[S]. Falls Church VA:International Code Council, Inc, 2006.
[15]IBC 2009, International building code[S]. Falls Church VA:International Code Council, Inc, 2009.
[16]IBC 2012, International building code[S]. Falls Church VA:International Code Council, Inc, 2012.
[17]蔡益燕.双重体系中框架的剪力分担率[J].建筑钢结构进展,2004, 6(2):60-61.Cai Yiyan. The shear-bearing ratio of the moment frame in dual system[J]. Progress in Steel Building Structures,2004, 6(2):60-61.(in Chinese)
[18]胡庆昌.钢筋混凝土框剪结构抗震设计若干问题的探讨[J].建筑结构,2006, 36(6):84-86.Hu Qingchang. Some problems relating to seismic design of RC Frame-wall structure[J]. Building Structure, 2006,36(6):84-86.(in Chinese)
[19]曹倩,汪洋,赵宏.复杂高层结构体系二道防线的探讨[J].建筑结构,2011, 41(增刊1):331-335.Cao Qian, Wang Yang, Zhao Hong. Discussion on thedual defense system applied in structurally complicated high-rise building[J]. Building Structure,2011,41(Suppl1):331-335.(in Chinese)
[20]王焕诚.考虑剪力分担率的钢框架组合墙结构安全性探析[J].建筑安全,2009, 24(9):51-52.Wang Huancheng. Safety analysis of steel frame-composite wall structure considering shear distribution ratio[J]. Construction Safety, 2009, 24(9):51-52.(in Chinese)
[21]Lu X, Ye L P, Lu X Z, et al. An improved ground motion intensity measure for super high-rise buildings[J],Science China Technological Sciences, 2013, 56(6):1525-1533.
[22]Lu X, Lu X Z, Zhang W K, et al. Collapse simulation of a super high-rise building subjected to extremely strong earthquakes[J]. Science China Technological Sciences,2011, 54(10):2549-2560.
[23]Lu X Z,Lu X,Guan H,et al. Earthquake-induced collapse simulation of a supertalli mega-braced frame-core tube building[J]. Journal of Constructional Steel Research,2013, 82:59-71.
[24]Lu X,Lu X Z,Guan H,et al. Collapse simulation of reinforced concrete high-rise building induced by extreme earthquakes[J]. Earthquake Engineering&Structural Dynamics, 2013, 42(5):705-723.
[25]Lu X,Lu X Z,Guan H, et al. Application of earthquake-induced collapse analysis in design optimization of a supertall building[J]. Structural Design of Tall&Special Buildings, 2016, 25(17):926-946.
[26]陆新征,蒋庆,缪志伟,等.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2015.Lu Xinzheng,Jiang Qing, Miao Zhiwei,et al.Elasto-plastic analysis of buildings against earthquake[M]. Beijing:China Architecture&Building Press, 2015.(in Chinese)
[27]GB 50009-2012,建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.GB 50009-2012, Load code for the design of building structures[S]. Beijing:China Architecture&Building Press, 2012.(in Chinese)
[28]FEMA P695, Quantification of building seismic performance factors[R]. Washington, DC:Federal Emergency Management Agency, 2009.
[29]施炜,叶列平,陆新征,等.不同抗震设防RC框架结构抗倒塌能力的研究[J].工程力学,2011,28(03):41-48.Shi Wei, Ye Lieping, Lu Xinzheng, et al. Study on the collapse-resistant capacity of RC frames with different seismic fortification levels[J]. Engineering Mechanics,2011, 28(03):41-48.(in Chinese)
[30]陆新征,叶列平.基于IDA分析的结构抗地震倒塌能力研究[J].工程抗震与加固改造,2010, 32(1):13-18.Lu Xinzheng, Ye Lieping. Study on the seismic collapse resistance of structural system[J]. Earthquake Resistant Engineering and Retrofitting, 2010, 32(1):13-18.(in Chinese)
[31]吕西林,苏宁粉,周颖.复杂高层结构基于增量动力分析法的地震易损性分析[J].地震工程与工程振动,2012, 32(5):19-25.Lu Xilin, Su Ningfen, Zhou Ying. IDA-based seismic fragility analysis of a complex high-rise structure[J].Journal of Earthquake Engineering and Engineering Vibration, 2012, 32(5):19-25.(in Chinese)
[32]周颖,吕西林,卜一.增量动力分析法在高层混合结构性能评估中的应用[J].同济大学学报(自然科学版),2010, 38(2):183-187.Zhou Ying, Lu Xilin, Bo Yi. Application of incremental dynamic analysis to seismic evaluation of hybrid structure[J]. Journal of Tongji University(Natural Science),2010, 38(2):183-187.(in Chinese)
[33]Alwaeli W, Mwafy A, Pilakoutas K, et al. A methodologyfor defining seismic scenario-structure-based limit state criteria for RC high-rise wall buildings using net drift[J].Earthquake Engineering&Structural Dynamics, 2017,46(8):1325-1344.
[34]Harrington C C,Liel A B. Collapse assessment of moment frame buildings, considering vertical ground shaking[J]. Earthquake Engineering&Structural Dynamics, 2016, 45(15):2475-2493.
[35]白久林,欧进萍.基于IDA方法的钢筋混凝土结构失效模式优化[J].工程力学,2011,28(增刊2):198-203.Bai Jiulin, Ou Jinping. Optimization of failure modes for reinforced concrete buildings based on IDA method[J].Engineering Mechanics, 2011, 28(SupplⅡ):198-203.(in Chinese)