基于竖向承载力及能量阈值的建筑结构地震损伤准则
|
摘要
首先从竖向承载力角度,给出建筑结构地震倒塌破坏定义,并由此提出基于构件损伤指数的楼层损伤指数计算公式。然后在有关钢管混凝土构件低周疲劳试验基础上,对单步能量阈值与总滞回耗能线性组合的钢筋混凝土构件损伤准则进行修改,使之能够同时适用于钢筋混凝土构件与钢管混凝土构件地震损伤计算。算例表明,所建立的建筑结构地震损伤准则可靠、准确,可用于建筑结构地震作用下倒塌机理分析。
Based on the axial residual strength of a reinforced concrete column,a seismic damage calculation formula for the floor,which is expressed by a seismic damage criterion of reinforced concrete elements,is proposed on the basis of the definition of structure seismic collapse.In order to suit the damage calculation of reinforced concrete elements and concrete filled steel tube elements at the same time,the damage criterion of reinforced concrete element which is a linear combination of one-step energy threshold and the total hysteretic energy,is modified by means of low cycle fatigue test on concrete filled steel tube elements.The results indicate that the proposed damage criterion of structures is reliable and accurate,which is able to be used to analyze the failure mechanism of structures under seismic excitations.
Based on the axial residual strength of a reinforced concrete column,a seismic damage calculation formula for the floor,which is expressed by a seismic damage criterion of reinforced concrete elements,is proposed on the basis of the definition of structure seismic collapse.In order to suit the damage calculation of reinforced concrete elements and concrete filled steel tube elements at the same time,the damage criterion of reinforced concrete element which is a linear combination of one-step energy threshold and the total hysteretic energy,is modified by means of low cycle fatigue test on concrete filled steel tube elements.The results indicate that the proposed damage criterion of structures is reliable and accurate,which is able to be used to analyze the failure mechanism of structures under seismic excitations.
引文
[1]魏琏,王迪民,韦承基,等.钢筋混凝土框架结构破坏机理探讨[J].工程抗震,1989,2(1):26-31.
[2]倪强,唐家祥.钢筋混凝土框架结构倒塌的计算机仿真研究[J].华中科技大学学报:自然科学版,1997,27(8):49-51.
[3]胡庆昌,孙金墀,郑琪.建筑结构抗震减震与连续倒塌控制[M].北京:中国建筑工业出版社,2007.
[4]焦双健,冯启民,付长文.钢筋混凝土框架结构地震破坏的计算机模拟方法[J].地震工程与工程振动,2002,22(2):54-59.
[5]Darwin D,Nmai C K.Dissipation in RC beams under cyclic load[J].Journal of Structural Engineering,ASCE,1986,112(8):1829-1846.
[6]Park Y J,Ang A H.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,ASCE,1985,111(4):722-739
[7]杜修力,尹之潜,李小军.RC框架结构倒塌反应分析[J].哈尔滨建筑工程学院学报,1992,25(3):7-12.
[8]徐培福,肖从真.高层建筑混凝土结构的稳定设计[J].建筑结构,2001,31(8):69-72.
[9]吕杨,徐龙河,李忠献,等.钢筋混凝土柱基于能量阀值的损伤准则[J].工程力学,2011,28(5):84-89
[10]瞿岳前,梁兴文,田野.基于能量分析的地震损伤性能评估[J].世界地震工程,2006,22(1):109-114.
[11]郭蓉,王铁成,赵少伟,等.方钢管混凝土柱的地震损伤模型[J].河北农业大学学报,2007,30(3):109-112.
[12]刘伯权,白绍良,徐云中,等.钢筋混凝土柱低周疲劳性能的试验研究[J].地震工程与工程振动,1998,18(4):82-89.
[13]张国伟,肖岩.钢管混凝土柱低周往复试验及疲劳寿命分析[J].工业建筑(增刊),2006,18(4):1410-1414.
[14]ACI 63 Building Code Requirements for Structural Concrete[S].2002.
[15]李兆霞.损伤力学及其应用[M].北京:科学出版社,2002.
[2]倪强,唐家祥.钢筋混凝土框架结构倒塌的计算机仿真研究[J].华中科技大学学报:自然科学版,1997,27(8):49-51.
[3]胡庆昌,孙金墀,郑琪.建筑结构抗震减震与连续倒塌控制[M].北京:中国建筑工业出版社,2007.
[4]焦双健,冯启民,付长文.钢筋混凝土框架结构地震破坏的计算机模拟方法[J].地震工程与工程振动,2002,22(2):54-59.
[5]Darwin D,Nmai C K.Dissipation in RC beams under cyclic load[J].Journal of Structural Engineering,ASCE,1986,112(8):1829-1846.
[6]Park Y J,Ang A H.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,ASCE,1985,111(4):722-739
[7]杜修力,尹之潜,李小军.RC框架结构倒塌反应分析[J].哈尔滨建筑工程学院学报,1992,25(3):7-12.
[8]徐培福,肖从真.高层建筑混凝土结构的稳定设计[J].建筑结构,2001,31(8):69-72.
[9]吕杨,徐龙河,李忠献,等.钢筋混凝土柱基于能量阀值的损伤准则[J].工程力学,2011,28(5):84-89
[10]瞿岳前,梁兴文,田野.基于能量分析的地震损伤性能评估[J].世界地震工程,2006,22(1):109-114.
[11]郭蓉,王铁成,赵少伟,等.方钢管混凝土柱的地震损伤模型[J].河北农业大学学报,2007,30(3):109-112.
[12]刘伯权,白绍良,徐云中,等.钢筋混凝土柱低周疲劳性能的试验研究[J].地震工程与工程振动,1998,18(4):82-89.
[13]张国伟,肖岩.钢管混凝土柱低周往复试验及疲劳寿命分析[J].工业建筑(增刊),2006,18(4):1410-1414.
[14]ACI 63 Building Code Requirements for Structural Concrete[S].2002.
[15]李兆霞.损伤力学及其应用[M].北京:科学出版社,2002.
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