砌体墙片滑移和固结振动台试验对比研究
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摘要
提出一种简易滑移减震技术,进行滑移层材料制备相关试验,同时进行单层砌体墙片滑移和固结模型振动台试验。对比不同基底约束情况下结构自振周期、加速度、位移等方面的地震反应差异。研究结果表明:在设计地震波峰值加速度较小时,滑移模型和固结模型的顶层加速度和层间位移都较小,在设计地震加速度为0.31g(1g=9.8 m/s2)时,相应为在7.5度罕遇地震作用下,固结模型出现裂缝,而滑移模型有较为明显的滑移,且相对滑移量随着地震波峰值加速度的增大而增大,上部结构在振动过程中为整体水平滑动,一直没有出现裂缝,减震效果明显。
A simply sliding seismic absorption technology was proposed,and the experiment about the material of sliding layer was carried out.At the same time,shaking table test at low-rise masonry wall with sliding absorption system and solid system was carried out.Two different forms of the corresponding of the structure in acceleration and sliding displacement,and other aspects of earthquake response were compared.The results show that when the design mesa peak acceleration is small,the corresponding of the structure in acceleration and sliding displacement is small;when the design mesa peak acceleration is increased to 0.31g(7.5 degree) of the original building,the model of solid appears cracks,while the model of sliding seismic absorption slides much and the slip increases with the increase of the peak acceleration.The model has no any cracks,and the top structure slides all together.The sliding seismic absorption structure has advantages in reducing the structural seismic response.
A simply sliding seismic absorption technology was proposed,and the experiment about the material of sliding layer was carried out.At the same time,shaking table test at low-rise masonry wall with sliding absorption system and solid system was carried out.Two different forms of the corresponding of the structure in acceleration and sliding displacement,and other aspects of earthquake response were compared.The results show that when the design mesa peak acceleration is small,the corresponding of the structure in acceleration and sliding displacement is small;when the design mesa peak acceleration is increased to 0.31g(7.5 degree) of the original building,the model of solid appears cracks,while the model of sliding seismic absorption slides much and the slip increases with the increase of the peak acceleration.The model has no any cracks,and the top structure slides all together.The sliding seismic absorption structure has advantages in reducing the structural seismic response.
引文
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[2]尚守平,周志锦.一种钢筋-沥青复合隔震层的性能[J].铁道科学与工程学报,2009,6(6):13-16.SHANG Shou-ping,ZHOU Zhi-jin.The research on the steel-asphalt isolation lay[J].Journal of Railway Science and Engineering,2009,6(6):13-16.
[3]尚守平,周福霖.结构抗震设计[M].北京:高等教育出版社,2003:10-35.SHANG Shou-ping,ZHOU Fu-lin.Structural seismic design[M].Beijing:Advanced Teach Publishing House,2003:10-35.
[4]李立.建筑物的滑动隔震技术的研究与应用[M].北京:地震出版社,1991:50-68.LI Li.Research and application of sliding isolation technology of building[M].Beijing:Earthquake Publishing House,1991:50-68.
[5]朱伯龙.结构抗震试验[M].北京:地震出版社,1989:14-45.ZHU Bo-long.Structure seismic test[M].Beijing:Earthquake Publishing House,1989:14-45.
[6]Phocas M C,Pamboris G.Multi-storey structures with compound seismic isolation[C]//7th International Conference on EarthquakeResistant Engineering Structures.Cyprus,2009,104:207-216.
[7]ZHOU Fu-lin,TAN Ping,XIAN Qiao-ling,et al.Research and application of seismic isolation system for building structures[J].Journal of Architecture and Civil Engineering,2006,23(2):l-8.
[8]Ye K,Li L,Zhu H.A modified Kelvin impact model for pounding simulation of base-isolated building with adjacent structures[J].Earthquake Engineering and Engineering Vibration,2009,8(3):433-446.
[9]HWANG Jenn-shin,HSU Ting-yu.Experimental study of isolated building under triaxial ground excitations[J].Journal of Structural Engineering,2000,126(9):879-886.
[10]吕西林.组合基础隔震房屋模型振动台试验研究[J].土木工程学报,2001,34(2):43-46.LüXi-lin.Shaking table test on building models with combined isolation system[J].China Civil Engineering Journal,2001,34(2):43-46.
[11]熊仲明.基础滑移隔震房屋的计算研究[J].土木工程学报,1995,28(5):21-30.XIONG Zhong-ming.The account research on basic sliding isolation houses[J].China Civil Engineering Journal,1995,28(5):21-30.
[12]GB50011-2010,建筑结构抗震设计规范[S].GB50011-2010,Code for seismic design of buildings[S].
[13]周福霖.工程结构减震控制[M].北京:地震出版社,1997:79-115.ZHOU Fu-lin.Engineering structural seismic absorption control[M].Beijing:Earthquake Publishing House,1997:79-115.
[14]Nagarajaiah S,Narasimhan S,Johnson E.Structural control benchmark problem(PhaseⅡ):Nonlinear smart base-isolated building subjected to near-fault earthquakes[J].Structural Control and Health Monitoring,2008,15(5):653-656.
[15]Di S L,Chioccarelli E,Cosenza E.Seismic response analysis of an irregular base isolated building[J].Bulletin of Earthquake Engineering,2011,1(1):1-30.
[16]Karimi H R,Zapateiro M,Luo,N.An LMI approach to vibration control of base-isolated building structures with delayed measurements[J].International Journal of Systems Science,2010,41(12):1511-1523.
[17]Lafontaine M,Moroni O,Sarrazin M,et al.Optimal control of accelerations in a base-isolated building using magneto-rheological dampers and genetic algorithms[J].Journal of Earthquake Engineering,2009,13(8):1153-1171.
[18]Pozo F,Montserrat P M,Rodellar J,et al.Robust active control of hysteretic base-isolated structures:Application to the benchmark smart base-isolated building[J].Structural Control and Health Monitoring,2008,15(5):720-736.
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