框架结构性能设计中钢筋混凝土变梁中节点性能指标量化研究
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摘要
通过分析结构及构件变形与损伤的关系,选取层间位移角作为钢筋混凝土变梁中节点基于性能的抗震设计指标。根据钢筋混凝土结构破坏的特点和框架结构基于性能抗震设计的需要,将钢筋混凝土框架结构性能水平划分为正常使用、暂时使用、修复后使用、生命安全和防止倒塌5个层次。在8个钢筋混凝土变梁中节点伪静力试验研究的基础上,根据节点试件的破坏过程、骨架曲线以及结构性能曲线将钢筋混凝土变梁中节点的性能水平划分为"五档",建议了不同性能水平下钢筋混凝土变梁中节点的变形和相关参数的量化标准,重点以层间位移角为性能指标量化参数,提出了节点基于性能的"五水平"参数量化指标,并结合我国现行规范给出了"三水准"设防目标下的参数量化指标。
According to the analysis of relationship between displacement and damage,inter-story drift ratio was selected as quantization indexes in performance-based seismic design of RC interior joints with different depth beams.According to the characteristics of reinforced concrete structure damage and needs of performance-based seismic design of frame structure,performance level of the reinforced concrete frame structure was divided into five grades as normal use,temporary use,use after repair,life safety and collapse prevention.Based on the investigation of eight interior joints with different depth beams under pseudo-static test,the performance level of this type joints was divided into" five grades" according to the joints failure progress,skeleton curves and performance curve of frame structure.In addition,the quantized standard in deformation and relative parameters of RC interior joint with different depth beam for different performance levels were suggested and inter-story drift ratios was selected as dominant performance index of quantized parameters of joint.Furthermore,performance index of quantitzed parameters of joint for three level fortification targets of current code was put forward.
According to the analysis of relationship between displacement and damage,inter-story drift ratio was selected as quantization indexes in performance-based seismic design of RC interior joints with different depth beams.According to the characteristics of reinforced concrete structure damage and needs of performance-based seismic design of frame structure,performance level of the reinforced concrete frame structure was divided into five grades as normal use,temporary use,use after repair,life safety and collapse prevention.Based on the investigation of eight interior joints with different depth beams under pseudo-static test,the performance level of this type joints was divided into" five grades" according to the joints failure progress,skeleton curves and performance curve of frame structure.In addition,the quantized standard in deformation and relative parameters of RC interior joint with different depth beam for different performance levels were suggested and inter-story drift ratios was selected as dominant performance index of quantized parameters of joint.Furthermore,performance index of quantitzed parameters of joint for three level fortification targets of current code was put forward.
引文
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[10]陆本燕,刘伯权,刘鸣,等.钢筋混凝土桥墩性能指标量化研究[J].中国公路学报,2010,23(6):49-57LU Benyan,LIU Boquam,LIU Ming,et al.Quantitative research on reinforced concrete performance index of reinforced concrete bridge column[J].China Journal of Highway and Transpor,2010,23(6):49-57.
[11]门进杰,史庆轩,周琦.框架结构基于性能的抗震设防目标和性能指标的量化[J].土木工程学报,2008,41(9):76-82.Men Jingjie,SHI Qingxuan,ZHOU Qi.Performance-based seismic fortification criterion and quantified performance index for reinforced con-crete frame structures[J].China Civil Engineering Journal,2008,41(9):76-82.
[2]ATC.ATC-40,Seismic Evaluation and Retrofit of Concrete Buildings[R].California:Applied Technology Council,1996.
[3]FEMA 356.Pre-Standard and Commentary for the Seismic Rehabilitation of Buildings[R].Washingtion,DC:Federal Emergency Management A-gency,2000.
[4]GB50011-2011.建筑抗震设计规范[S].北京:中国建筑工业出版社,2011.GB50011.Code for seismic design of buildings[S].Beijing:China Architectural&Building Press,2011.
[5]GB50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.GB50010.Code for design of concrete structures[S].Beijing:China Architectural&Building Press,2010.
[6]黄超,季静,韩小雷,等.基于性能的既有钢筋混凝土建筑结构抗震评估与加固技术研究[J].地震工程与工程震动,2007,27(5):72-79.HUANG Chao,JI Jing,HAN Xiaolei,et al.Research on performance-based seismic evaluation and strengthening for existing reinforced concretestructures[J].Journal of earthquake engineering and engineering vibration,2007,27(5):72-79.
[7]刘伯权,邢国华,吴涛,等.钢筋混凝土框架异型中节点抗裂性能试验研究[J].土木工程学报,2009,42(10):67-73.LIU Boquam,XING Guohua,WU Tao etc.Experimental study of crack resistance performance of irregular interior joints in reinforced concreteframe structures[J].China Civil Engineering Journal,2009,42(10):67-73.
[8]吴涛,邢国华,刘伯权,等.钢筋混凝土框架变梁中节点抗震性能试验研究[J].建筑结构学报,2010,31(10):98-106WU Tao,XING Guohua,LIU Boquan,et al.Experimental research on seismic behavior of irregular interior joints in RC frame structure[J].Jour-nal of Building Structures,2010,31(10):98-106.
[9]FEMA 273.NHRP guidelines for the seismic rehabilitation of buildings[S].Federal Emergency Management Agency,October.1997.
[10]陆本燕,刘伯权,刘鸣,等.钢筋混凝土桥墩性能指标量化研究[J].中国公路学报,2010,23(6):49-57LU Benyan,LIU Boquam,LIU Ming,et al.Quantitative research on reinforced concrete performance index of reinforced concrete bridge column[J].China Journal of Highway and Transpor,2010,23(6):49-57.
[11]门进杰,史庆轩,周琦.框架结构基于性能的抗震设防目标和性能指标的量化[J].土木工程学报,2008,41(9):76-82.Men Jingjie,SHI Qingxuan,ZHOU Qi.Performance-based seismic fortification criterion and quantified performance index for reinforced con-crete frame structures[J].China Civil Engineering Journal,2008,41(9):76-82.
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