带暗支撑全再生混凝土低矮剪力墙的动力性能
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摘要
为了解带暗支撑全再生混凝土低矮剪力墙的动力性能,进行了3个不同配筋率、不同配筋形式的低矮剪力墙振动台试验研究,其中1个为普通混凝土低矮剪力墙、1个为全再生混凝土低矮剪力墙、1个为带钢筋暗支撑全再生混凝土低矮剪力墙.在试验研究基础上,分析比较了各剪力墙在不同受力阶段的自振频率、加速度反应、位移反应和破坏特征;进行了有限元非线性时程反应分析,分析结果与试验结果符合较好.研究结果表明:全再生混凝土低矮剪力墙的自振频率比普通混凝土低矮剪力墙略低;通过增设钢筋暗支撑的方式可使全再生混凝土低矮剪力墙的抗震能力达到普通混凝土低矮剪力墙的抗震能力水平.
In order to ascertain the dynamic performance of the low-rise recycled aggregate concrete(RAC) shear wall with concealed bracings,the shaking table tests of three RC shear wall models,including a natural aggregate concrete shear wall and two RAC shear walls with or without concealed bracings,were carried out.The natural frequency,dynamic response of acceleration,response of displacement,as well as the failure patterns of three models at different loading stages were measured and compared on the basis of the tests.The finite element nonlinear time-history response analysis was also conducted,and the analysis results agreed well with the experimental results.The results show that the natural frequency of low-rise RAC shear walls is slightly lower than that of the natural aggregate concrete shear wall.The aseismic capacity of RAC shear wall is able to achieve the level as the natural aggregate concrete shear wall by setting up concealed bracings inside the wall.
In order to ascertain the dynamic performance of the low-rise recycled aggregate concrete(RAC) shear wall with concealed bracings,the shaking table tests of three RC shear wall models,including a natural aggregate concrete shear wall and two RAC shear walls with or without concealed bracings,were carried out.The natural frequency,dynamic response of acceleration,response of displacement,as well as the failure patterns of three models at different loading stages were measured and compared on the basis of the tests.The finite element nonlinear time-history response analysis was also conducted,and the analysis results agreed well with the experimental results.The results show that the natural frequency of low-rise RAC shear walls is slightly lower than that of the natural aggregate concrete shear wall.The aseismic capacity of RAC shear wall is able to achieve the level as the natural aggregate concrete shear wall by setting up concealed bracings inside the wall.
引文
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[2]孙跃东,肖建庄,周德源,等.再生混凝土框架抗震性能的试验研究[J].土木工程学报,2006,39(5):9-15.SUN Yue-dong,XIAO Jian-zhuang,ZHOU De-yuan,etal.An experimental study on the seismic behavior ofrecycled concrete frames[J].China Civil EngineeringJournal,2006,39(5):9-15.(in Chinese)
[3]白国良,刘超,赵洪金,等.再生混凝土框架柱抗震性能试验研究[J].地震工程与工程振动,2011,31(1):61-66.BAI Guo-liang,LIU Chao,ZHAO Hong-jin,et al.Experimental research on seismic behavior of recycledconcrete frame columns[J].Journal of EarthquakeEngineering and Engineering Vibration,2011,31(1):61-66.(in Chinese)
[4]肖建庄,朱晓晖.再生混凝土框架节点抗震性能研究[J].同济大学学报:自然科学版,2005,33(4):436-440.XIAO Jian-zhuang,ZHU Xiao-hui.Study on seismicbehavior of recycled concrete frame joints[J].Journal ofTongJi University:Natural Science Edition,2005,33(4):436-440.(in Chinese)
[5]张建伟,曹万林,董宏英,等.再生骨料参量对中高剪力影响试验研究[J].土木工程学报,2010,43(S2):55-61.ZHANG Jian-wei,CAO Wan-lin,DONG Hong-ying,etal.Experimental study on seismic behavior of mid-riserecycled concrete shear walls with different percentage ofaggregate replacement[J].China Civil EngineeringJournal,2010,43(S2):55-61.(in Chinese)
[6]曹万林,张亚齐,张建伟,等.不同再生骨料取代率混凝土双肢剪力墙低周反复荷载试验研究[J].北京工业大学学报,2011,37(11):1656-1660.CAO Wan-lin,ZHANG Ya-qi,ZHANG Jian-wei,et al.Low-cycle loading experimental study on coupled shearwWalls with different replacement ratio of recycledaggregate[J].Journal of Beijing University of Technology,2011,37(11):1656-1660.(in Chinese)
[7]曹万林,张建伟,尹海鹏,等.再生混凝土框架-剪力墙结构抗震研究与应用[J].工程力学,2010,27(SII):135-141.CAO Wan-lin,ZHANG Jian-wei,YIN Hai-peng,et al.Experiment study on the seismic behavior of the recycledconcrete frame-shear-wall structure[J].EngineeringMechanics,2010,27(SII):135-141.(in Chinese)
[8]CAO Wan-lin,DONG Hong-ying,ZHANG Jian-wei,etal.Study on seismic performance of RAC shear wall withdifferent shear-span ratio[C]∥Proceedings of the 2ndInternational Conference on Waste Engineering andManagement ICWEM 2010.Bagneux France:RILEMPublications SARL,2010:652-660.
[9]张建伟,丹珊,曹万林,等.不同再生骨料掺量的中高剪力墙振动台试验研究[J].世界地震工程,2011,27(2):57-62.ZHANG Jian-wei,DAN Shan,CAO Wan-lin,et al.Earthquake simulation test on mid-rise recycled concreteshear walls with different percentage of aggregatereplacement[J].World Earthquake Engineering,2011,27(2):57-62.(in Chinese)
[10]张建伟,曹万林,田宝发,等.底层大空间带暗支撑剪力墙结构振动台试验研究[J].建筑结构学报,2004,25(6):44-51.ZHANG Jian-wei,CAO Wan-lin,TIAN Bao-fa,et al.Earthquake simulation test of RC shear wall structure withconcealed bracings and large space on ground floor[J].Journal of Building Structures,2004,25(6):44-51.(in Chinese)
[11]中国建筑科学研究院.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.China Academy of Building Research.GB50011—2010Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010.(inChinese)
[12]中国建筑科学研究院.GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.China Academy of Building Research.GB50010—2010Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2010.(inChinese)
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