再生混凝土框架结构地震作用下随机损伤与评估分析
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
通过对缩尺比例为1∶4的3层再生混凝土框架结构模型双向输入模拟振动台试验结果的分析,研究了该结构频率、阻尼以及层间位移角的变化情况。结果表明:该再生混凝土框架结构具有良好的抗震性能。综合考虑再生混凝土框架结构X、Y向不同频率、阻尼比、刚度、结构振型以及不同的结构形式与自振频率的测试方法,提出了相应的再生混凝土框架整体结构损伤模型;基于该损伤模型对该再生混凝土框架结构破坏等级的分析,结合现行相关规范要求,建立了再生混凝土框架结构破坏等级划分;拟合了再生混凝土框架结构损伤指标的计算式。研究结果表明:提出的损伤模型与试验现象基本吻合,能够用于再生混凝土框架结构震后损伤与定量评估分析。
According to the bidirectional shaking table-simulation tests on a 1 ∶ 4 scaled model of three-story frame model with recycled aggregate concrete( RAC),variation of the frequency,damping and inter-story drift of the model was analyzed. The results indicate that the RAC frame structure has good seismic resistance capacity. The damage model of the overall RAC structures was proposed with synthetically considering frequency,damping ratio,stiffness,modal number in X and Y directions of the structures. Meanwhile,the type of structures and measurement method of natural frequency were also taken into account in the model. The damage level of RAC structures was analyzed with the damage model. Meanwhile,considering the result and existing codes,five synthetical damage level standards for RAC structures were established. Finally,a quick calculation formula for the RAC structural damage indicators was fitted in order for the application of practical engineering. The results show that the damage results based on the proposed model are consistent with the experimental phenomena,which can be applied to the analysis of the earthquake damage and quantitative assessment for actual RAC structures.
引文
[1]Xiao J,Li W,Poon C.Recent studies on mechanical properties of recycled aggregate concrete in China:a review[J].Science China:Technological Sciences,2012,55(6):1463-1480.
    [2]张博,王社良,杜园芳,等.压碎值指标对再生混凝土抗压强度的影响[J].工业建筑,2013,43(11):1-6.(ZHANG Bo,WANG Sheliang,Du Yuanfang,et al.Influence of crush value index for compression strength of recycled aggregate concrete[J].Industrial Construction,2013,43(11):1-6.(in Chinese))
    [3]杜园芳,王社良,余滨杉,等.混杂再生纤维对再生混凝土强度的影响研究[J].工业建筑,2013,43(11):12-15.(DU Yuanfang,WANG Sheliang,YU Binshan,et al.Experimental study on hybrid renewable fiber effect on strength of recycled aggregate concrete[J].Industrial Construction,2013,43(11):12-15.(in Chinese))
    [4]樊禹江,王社良,于洋,等.性能增强再生混凝土梁受弯性能试验研究[J].实验力学,2013,28(3):390-402.(FAN Yujiang,WANG Sheliang,YU Yang,et al.Flexural performance experimental study on the enhanced performance recycled concrete beams[J].Journal of Experimental Mechanics,2013,28(3):390-402.(in Chinese))
    [5]王社良,余滨杉,樊禹江.性能增强RAC柱抗震性能试验研究[J].工业建筑,2013,43(11):21-25.(WANG Sheliang,YU Binshan,FAN Yujiang.Seismic behavior experimental research on performance enhancements of RAC column[J].Industrial Construction,2013,43(11):21-25.(in Chinese))
    [6]樊禹江,王社良,张博,等.再生混凝土柱地震破坏Park-Ang模型试验研究[J].应用力学学报,2013,30(5):736-740.(FAN Yujiang,WANG Sheliang,ZHANG Bo,et al.Experimental study of seismic damage with modified Park-Ang model for RAC columns[J].Chinese Journal of Applied Mechanics,2013,30(5):736-740.(in Chinese))
    [7]肖建庄,王长青,丁陶.再生混凝土框架结构抗震性能及其评价[J].土木工程学报,2013,46(8):55-66.(XIAO Jianzhuang,WANG Changqing,DING Tao.Study and evaluation on the seismic performance of recycled aggregate concrete frame[J].China Civil Engineering Journal,2013,46(8):55-66.(in Chinese))
    [8]倪雪.钢筋混凝土框架结构震损评定方法和可修指标研究[D].上海:同济大学,2012:46-52.(NI Xue.Researches on the method of damage assessment and index of repairable for RC frame structures in earthquake[D].Shanghai:Tongji University,2012:46-52.(in Chinese))
    [9]Park Y,Ang A H.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,ASCE,1985,111:722-739.
    [10]Park Y,Ang A H,Wen Y K.Seismic damage analysis of reinforced concrete buildings[J].Journal of Structural Engineering,ASCE,1985,111:740-757.
    [11]GU Xianglin,SHEN Zuyan.Damage analysis of reinforced concrete structures under earthquake series[C]//Proceedings of the 7th International Conference on Computing in Civil and Building Engineering.Seoul,Kroea:TTP Press,1997:1019-1024.
    [12]迟世春,林少书.结构动力模型试验相似理论及其验证[J].世界地震工程,2004,20(4):25-30.(CHI Shichun,LIN Shaoshu.Validation of similitude laws for dynamic structural model test[J].World Information on Earthquake Engineering,2004,20(4):25-30.(in Chinese))
    [13]施卫星,汪洋,刘成清.基于频率测量的高层建筑地震作用损伤分析[J].西南交通大学学报,2007,42(4):389-394.(SHI Weixing,WANG Yang,LIU Chengqing.Damage analysis of high-rise building under seismic load based on frequency measurement[J].Journal of Southwest Jiaotong University,2007,42(4):389-394.(in Chinese))
    [14]刘成清,施卫星,赵世春.基于试验测量的高层结构整体抗震损伤评估[J].建筑科学,2012,28(7):8-11.(LIU Chengqing,SHI Weixing,ZHAO Shichun.Seismic damage assessment of high-rise structures based on experimental measurements[J].Building Science,2012,28(7):8-11.(in Chinese))

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