基于性能的耐久性损伤RC构件时变抗震设计方法研究
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摘要
采用基于性能的抗震设计方法,考虑典型耐久性环境的影响,以及时变地震作用,探讨基于性能的耐久性损伤钢筋混凝土构件时变抗震设计方法。通过构件变形能力进行量化处理,建立了使用年限内典型耐久性环境下,构件破损指标、相对受压区高度、配箍特征值及曲率延性的量化关系式。对耐久性退化钢筋混凝土构件抗震设计时,应根据使用年限及耐久性环境,通过性能目标来调整构件设计要求,建议对规范配箍特征值、最小配筋率及相对界限受压区高度等抗震设计指标进行调整。以一般大气环境为例,给出了典型耐久性环境下,构件抗震设计时的最小配筋率和最小配箍率调整系数,以及不同抗震等级下的相对受压区高度在不同设计使用年限内的限值要求。
Applying the performance-based aseismic design method,considering influences of typical durability environment and time-varying earthquake action,the performance-based time-varying aseismic design method for durability damaged RC members was explored. Through quantified processing of panels ' deformation ability,under the typical durability environment within the design working life,the quantified relation expressions among panels' damage indexes,relative height of compression zone,stirrup characteristic value and curvature ductility were established. In RC member aseismic durability design,the design demands were adjusted to meet performance objective requirements according to the durability environment and design working life. So,the aseismic design indexes,such as,stirrup characteristic value,minimum reinforcement ratio and relative height of compression zone were adjusted. Their adjusting coefficients for different design working lifes under the common atmosphere environment were given.
Applying the performance-based aseismic design method,considering influences of typical durability environment and time-varying earthquake action,the performance-based time-varying aseismic design method for durability damaged RC members was explored. Through quantified processing of panels ' deformation ability,under the typical durability environment within the design working life,the quantified relation expressions among panels' damage indexes,relative height of compression zone,stirrup characteristic value and curvature ductility were established. In RC member aseismic durability design,the design demands were adjusted to meet performance objective requirements according to the durability environment and design working life. So,the aseismic design indexes,such as,stirrup characteristic value,minimum reinforcement ratio and relative height of compression zone were adjusted. Their adjusting coefficients for different design working lifes under the common atmosphere environment were given.
引文
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[18]PRIESTLEY M J N.Brief comments on elastic flexibility of reinforced concrete frames and significance to seismic design[J].Bulletin of the New Zealand National Society for Earthquake Engineering,1998,31(4):245-259.
[19]吕西林,周定松,蒋欢军.钢筋混凝土框架柱的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(6):53-61.LXilin,ZHOU Dingsong,JIANG Huanjun.Deformation capacity and performance-based seismic design method for RC frame columns[J].Earthquake Engineering and Engineering Vibration,2005,25(6):53-61.
[20]蔡立伦.含腐蚀钢筋之钢筋混凝土梁耐震行为[D].台湾:国立台湾科技大学,2011.
[2]CAIMAS J,PLIZZARI G,DU Y.Mechanical properties of corrosion-damaged reinforcement[J].ACI Materials Journal,2005,102(4):256-264.
[3]金伟良,夏晋.汶川地震中混凝土结构的耐久性的思考[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,2008:326-334.
[4]季静,肖启艳,黄超,等.基于性能的钢筋混凝土剪力墙受弯破坏变形限值的研究[J].建筑结构学报,2010,31(9):35-41.JI Jing,XIAO Qiyan,HUANG Chao,et al.Research on deformation limits of performance-based RC shear walls controlled by flexure[J].Journal of Building Structures,2010,31(9):35-41.
[5]清华大学、西南交通大学、北京交通大学土木工程结构专家组.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 and Beijing Jiaotong University.Analysis on seismic damage of buildings in the wenchuan earthquake[J].Journal of Building Structures,2008,29(4):1-9.
[6]梁岩.耐久性退化钢筋混凝土构件抗震性能及设计方法研究[D].长沙:中南大学,2014.
[7]梁岩,罗小勇,张艳芳.反复荷载作用下锈蚀高强钢筋的性能变化[J].建筑材料学报,2015,18(1):145-149.LIANG Yan,LUO Xiaoyong,ZHANG Yanfang.Property changes of corroded high-strength steel bars under cycling load[J].Journal of Building Materials,2015,18(1):145-149.
[8]梁岩,罗小勇,陈代海.锈蚀钢筋混凝土构件基于地震损伤的恢复力模型研究[J].振动与冲击,2015,34(5):199-206.LIANG Yan,LUO Xiaoyong,CHEN Daihai.Restoring force model of corroded reinforced concrete members undergoing seismic damage[J].Journal of Vibration and Shock,2015,34(5):199-206.
[9]梁岩,陈淮,罗小勇.一般大气环境下钢筋混凝土构件抗震性能时随特征[J].湖南大学学报,2016,43(3):104-112.LIANG Yan,CHEN Huai,LUO Xiaoyong.Time dependent seismic performance of reinforced concrete member under common atmosphere environment[J].Journal of Hunan University,2016,43(3):104-112.
[10]梁岩,李杰,罗小勇.锈蚀钢筋混凝土构件抗震动力性能研究[J].振动工程学报,2016,29(1):140-147.LIANG Yan,LI Jie,LUO Xiaoyong.Study on anti-seismic dynamic property of corroded reinforced concrete member[J].Journal of Vibration Engineering,2016,29(1):140-147.
[11]孙彬,牛荻涛,董振平.在役结构抗震评估地震作用取值研究[J].西安建筑科技大学学报(自然科学版),2003,35(4):312-316.SUN Bin,NIU Ditao,DONG Zhenping.Research on earthquake action for seismic assessment of existing structures[J].J.Xi’an Univ.of Arch.&Tech.(Natural Science),2003,35(4):312-316.
[12]高小旺,鲍霭斌.地震作用慨率模型及统汁参数[J].地震工程与工程振动,1985,5(1):13-22.GAO Xiaowang,BAO Aibin.Probabilistic model and its statistical for seismic load[J].Earthquake Engineering and Engineering Vibration,1985,5(1):13-22.
[13]赵昕,董佩伟.高层建筑结构基于时变性能的抗震设计方法研究[J].地震工程与工程振动,2014,33(6):115-121.ZHAO Xin,DONG Peiwei.Tall building seismic design lifetime time-dependent perfomance[J].Earthquake Engineering and Engineering Vibration,2014,33(6):115-121.
[14]刘恢先,广荣俭,陈达生.修订我国地震烈度表的一个建议方案[C]//地震工程研究报告集(第四集).北京:科学出版社,1981:1-13.
[15]PAULAY T,PRIESTLY M J N.Seismic design of reinforced concrete and masonry buildings[R].New York:John Wiley,Inc.,1992.
[16]MANDER J B,PRIESTLY M J N,PARK R.Theoretical stress strain model for confined concrete[J].Journal of structural Engineering,ASCE,1998,114(8):1804-1826.
[17]周定松,吕西林,蒋欢军.钢筋混凝土框架梁的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(4):60-66.ZHOU Dingsong,LXilin,JIANG Huanjun.Deformation capacity and performance-based seismic design method for RC frame beams[J].Earthquake Engineering and Engineering Vibration,2005,25(4):60-66.
[18]PRIESTLEY M J N.Brief comments on elastic flexibility of reinforced concrete frames and significance to seismic design[J].Bulletin of the New Zealand National Society for Earthquake Engineering,1998,31(4):245-259.
[19]吕西林,周定松,蒋欢军.钢筋混凝土框架柱的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(6):53-61.LXilin,ZHOU Dingsong,JIANG Huanjun.Deformation capacity and performance-based seismic design method for RC frame columns[J].Earthquake Engineering and Engineering Vibration,2005,25(6):53-61.
[20]蔡立伦.含腐蚀钢筋之钢筋混凝土梁耐震行为[D].台湾:国立台湾科技大学,2011.