RC框架结构抗震目标性能水平确定方法研究
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摘要
在基于性能抗震设计中,要求实现多级设防,目的是使结构抗震设计不仅要保护生命安全,同时也要控制因结构破坏而带来的经济损失,使结构在整个生命周期内费用达到最小。但由于结构抗震设计中存在着大量的不确定因素,使得实现每个性能水平都是不确定的,因此,每个性能水平的目标可靠度究竟取多高才能达到设计要求,是目前抗震设计的一个基本问题。针对这一问题,将地震作用、自重荷载、材料强度等看作随机变量,分析了结构造价与失效概率之间的近似关系,明确了不同性能水平失效概率之间的合理比例关系,采用"投资-效益"准则,且控制人员伤亡率小于社会可接受水平,来确定结构的目标性能水平。以两个钢筋混凝土框架结构为例,说明了该方法的应用。
Implementation of multi-level fortification is a basic requirment of performance-based seismic design.It aims to not only protect people's life but also control economic losses caused by damaged buildings.Three are many random factors in seismic design procedure,which lead to that the implementation of seismic performance of buildings has uncertainty.So how to determine target performance level is a basic problem for performance-based seismic design.In this paper,a new method is presented for determining the target performance level and the target performance level is determined by "cost-benefit" criteria,based on establishing the relation between the structural cost and failure probability and defining the relations among failure probabilities of different performances levels.
Implementation of multi-level fortification is a basic requirment of performance-based seismic design.It aims to not only protect people's life but also control economic losses caused by damaged buildings.Three are many random factors in seismic design procedure,which lead to that the implementation of seismic performance of buildings has uncertainty.So how to determine target performance level is a basic problem for performance-based seismic design.In this paper,a new method is presented for determining the target performance level and the target performance level is determined by "cost-benefit" criteria,based on establishing the relation between the structural cost and failure probability and defining the relations among failure probabilities of different performances levels.
引文
[1]Raul D.Bertero,Vitelmo V.Bertero.Performance-based seismic engineering:the need for a reliable conceptual comprehensive approach[J].Earthquake Engineering and Structural Dynamics.2002,31:627-652.
[2]Wen Y K.Reliability and performance-based design[J].Structural Safety.2001,23:407-428.
[3]王光远,程耿东,邵卓民,等.抗震结构的最优设防烈度与可靠度[M].北京:科学出版社,1999.Wang Guangyuan,Chen Gengdong,Shao Zuoming.Optimal reliability and seismic intensity of structures[M].Beijing:Science Press,1999.
[4]kamal C.Sarma,Hojjat Adeli.Cost optimization of concrete structures[J].Journal of Structural Engineering.1998,124(5):570-578.
[5]Wen Y K,Kang Y J.Minimum building life-cycle cost design criteria[J].Ⅰ:Methodology.Journal of Structural engineering,2001,127(3):330-337.
[6]龚思礼.建筑抗震设计[M].北京:中国建筑工业出版社,1994.Gong Si li.Seismic design of buildings[M].Beijing:China Architecture&Building Press,1994.
[7]马宏旺,吕西林.钢筋混凝土框架结构造价与失效概率之间的近似关系研究[J].地震工程与工程振动,2003,23(3):125-131.Ma Hongwang,Lv Xilin.Study on relationship between structural cost and failure probability of reinforced concrete frames[J].Earthquake Engi-neering and Engineering Vibration,2003,23(3):125-131.
[8]马宏旺,吕西林,陈晓宝.建筑结构不同性能水平失效概率的合理比例关系研究[J].地震工程与工程振动,2003,23(6),97-102.Ma Hongwang,Lv Xilin,Chen Xiaobao.Study on relation of failure probabilities for different performance levels of buildings[J].Earthquake Engi-neering and Engineering Vibration,2003,23(6),97-102.
[9]Alfredo H S.Ang,Jae Chull Lee.Cost optimal design of R/C buildings[J].Reliability Engineering and System Safety,2001,73:233-238.
[10]忻鼎康,胡祖光.中山北路地铁车站预应力有限元分析[C]//上海预应力会议论文集.上海:2004:114-120.Xi Ding kang,Hu Zhugang.Finite element analysis of zhongshan north Road Subuay Station Prestressed Strueture[C]//Shanghai Prestressed Con-ference,2004:114-120.
[11]吴永祥.聚丙烯纤维混凝土在地铁车站抗裂防渗中的应用研究[D].上海:上海交通大学,2008.Wu Yongciang.The study on the anti—Cracking and waterproof of the polypropylene fiber conerete in the subway station[D].Shanghai:Shanghai saotong Univeosity,2008.
[2]Wen Y K.Reliability and performance-based design[J].Structural Safety.2001,23:407-428.
[3]王光远,程耿东,邵卓民,等.抗震结构的最优设防烈度与可靠度[M].北京:科学出版社,1999.Wang Guangyuan,Chen Gengdong,Shao Zuoming.Optimal reliability and seismic intensity of structures[M].Beijing:Science Press,1999.
[4]kamal C.Sarma,Hojjat Adeli.Cost optimization of concrete structures[J].Journal of Structural Engineering.1998,124(5):570-578.
[5]Wen Y K,Kang Y J.Minimum building life-cycle cost design criteria[J].Ⅰ:Methodology.Journal of Structural engineering,2001,127(3):330-337.
[6]龚思礼.建筑抗震设计[M].北京:中国建筑工业出版社,1994.Gong Si li.Seismic design of buildings[M].Beijing:China Architecture&Building Press,1994.
[7]马宏旺,吕西林.钢筋混凝土框架结构造价与失效概率之间的近似关系研究[J].地震工程与工程振动,2003,23(3):125-131.Ma Hongwang,Lv Xilin.Study on relationship between structural cost and failure probability of reinforced concrete frames[J].Earthquake Engi-neering and Engineering Vibration,2003,23(3):125-131.
[8]马宏旺,吕西林,陈晓宝.建筑结构不同性能水平失效概率的合理比例关系研究[J].地震工程与工程振动,2003,23(6),97-102.Ma Hongwang,Lv Xilin,Chen Xiaobao.Study on relation of failure probabilities for different performance levels of buildings[J].Earthquake Engi-neering and Engineering Vibration,2003,23(6),97-102.
[9]Alfredo H S.Ang,Jae Chull Lee.Cost optimal design of R/C buildings[J].Reliability Engineering and System Safety,2001,73:233-238.
[10]忻鼎康,胡祖光.中山北路地铁车站预应力有限元分析[C]//上海预应力会议论文集.上海:2004:114-120.Xi Ding kang,Hu Zhugang.Finite element analysis of zhongshan north Road Subuay Station Prestressed Strueture[C]//Shanghai Prestressed Con-ference,2004:114-120.
[11]吴永祥.聚丙烯纤维混凝土在地铁车站抗裂防渗中的应用研究[D].上海:上海交通大学,2008.Wu Yongciang.The study on the anti—Cracking and waterproof of the polypropylene fiber conerete in the subway station[D].Shanghai:Shanghai saotong Univeosity,2008.
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