SRHSHPC框架结构地震损伤试验研究
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摘要
基于一榀型钢高强高性能混凝土(SRHSHPC)框架结构试件拟静力试验,观测了SRHSHPC框架结构在低周反复荷载作用下的裂缝开展和破坏模式,得到了框架结构的荷载位移曲线和骨架曲线,通过对试验现象的分析,揭示了SRHSHPC框架结构中梁、柱构件损伤与结构单层破坏之间的关系,引入节点位置权重系数,建立了结构单层地震损伤模型;通过对结构单层损伤与整体结构破坏之间的关系进行分析,建立了SRHSHPC框架结构地震损伤模型。计算结果与试验结果的对比表明:该文所建立的地震损伤模型能够较好地描述SRHSHPC框架结构的地震损伤演化过程与损伤程度,并反映构件损伤、局部结构损伤以及整体结构损伤三者之间迁移演化规律。
Based on the test of a SRHSHPC framed structure under a low cycle reversed loading,the crack propagation and failure mode were observed in this test.According to the tested load-displacement hysteretic curve and skeleton curve of the frame,the relation between component damage and storey damage was analyzed.The storey damage model was established by introducing a joint location weighting coefficient;through analyzing the relation between storey damage and structure damage,the structure damage model of the SRHSHPC frame was established.The comparison of the calculated results with test results indicates that the proposed seismic damage model can appropriately describe the damage degree and evolution process of the SRHSHPC framed structure,and the migration evolution law between local component damage,local structure damage and global structure damage is revealed.
Based on the test of a SRHSHPC framed structure under a low cycle reversed loading,the crack propagation and failure mode were observed in this test.According to the tested load-displacement hysteretic curve and skeleton curve of the frame,the relation between component damage and storey damage was analyzed.The storey damage model was established by introducing a joint location weighting coefficient;through analyzing the relation between storey damage and structure damage,the structure damage model of the SRHSHPC frame was established.The comparison of the calculated results with test results indicates that the proposed seismic damage model can appropriately describe the damage degree and evolution process of the SRHSHPC framed structure,and the migration evolution law between local component damage,local structure damage and global structure damage is revealed.
引文
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[2]杜修力,欧进萍.建筑结构地震破坏评估模型[J].世界地震工程,1991,7(3):52―58.Du Xiuli,Ou Jinping.Seismic damage assessment ofbuilding structures[J].World Information on EarthquakeEngineering,1991,7(3):52―58.(in Chinese)
[3]吴波,欧进萍.钢筋混凝上结构在主余震作用下的反应与损伤分析[J].建筑结构学报,1993,14(3):15―53.Wu Bo,Ou Jinping.Response and damage analysis ofreinforced concrete structures under main shock and aftershocks[J].Journal of Building Structures,1993,14(3):15―53.(in Chinese)
[4]杨栋,丁大钧,宰金珉.钢筋混凝土框架结构的地震损伤分析[J].南京建筑工程学院学报,1995,35(4):8―13.Yang Dong,Ding Dajun,Zai Jinmin.Seismic injuryassessment of reinforced concrete frame structures[J].Journal of Nanjing Architectural and Civil EngineeringInstitute,1995,35(4):8―13.(in Chinese)
[5]牛荻涛,欧进萍.非线性钢筋混凝土抗震结构的随机破损分析与设计[J].哈尔滨建筑工程学院学报,1991,24(3):8―17.Niu Ditao,Ou Jinping.Random damage analysis anddesign of nonlinear seismic reinforced concretestructures[J].Journal of Harbin Architectural and CivilEngineering Institute,1991,24(3):8―17.(in Chinese)
[6]沈祖炎,董宝,曹文衔.结构损伤累积分析的研究现状和存在的问题[J].同济大学学报,1997,25(2):135―140.Shen Zuyan,Dong Bao,Cao Wenxian.Development andevaluation of researches on damage accumulationanalysis for building structures[J].Journal of TongjiUniversity,1997,25(2):135―140.(in Chinese)
[7]张宏仁.型钢高强高性能混凝土框架结构地震损伤分析[D].西安:西安建筑科技大学,2010.Zhang Hongren.Seismic damage analysis of steelreinforced high strength and high performance concretecomposite frame structures[D].Xi’an:Xi’an Universityof Architecture and Technology,2010.(in Chinese)
[8]王斌,郑山锁,国贤发,于飞,张宏仁.型钢高强高性能混凝土框架柱地震损伤分析[J].工程力学,2012,29(2):61―68.Wang Bin,Zheng Shansuo,Guo Xianfa,Yu Fei,ZhangHongren.Seismic damage analysis for SRHSHPC framecolumns[J].Engineering Mechanics,2012,29(2):61―68.(in Chinese)
[9]于飞.型钢高强高性能混凝土框架梁地震损伤研究[D].西安:西安建筑科技大学,2010.Yu Fei.Research on seismic damage of steel reinforcedhigh strength and high performance concrete framebeams[D].Xi’an:Xi’an University of Architecture andTechnology,2010.(in Chinese)
[10]Chung Y S,Meyer C,Shinozwha M.Modeling ofconcrete damage[J].Structural Journal ACI,1989,86(3):259―270.
[11]欧进萍,牛荻涛,王光远.非线性钢筋混凝上抗震结构的损失估计与优化设计[J].土木工程学报,1993,26(5):25―29.Ou Jinping,Niu Ditao,Wang Guangyuan.Damageevaluation and optimize design of nonlinear seismicreinforced concrete structures[J].China CivilEngineering Journal,1993,26(5):25―29.(in Chinese)
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