Abstract:In studies on seismic isolation structure for a single tower on a large chassis, few attentions were paid to the influence of the indentation ratio on the seismic isolation effects. A single tower on a large chassis with the tower indentation ratio of 1:3 was taken as a model with 3 structural forms including base seismic isolation, interlayer seismic isolation and aseismic one. One-way shaking table test was then conducted on these 3 models. 3 models were numerically simulated, their results were verified by comparing them with the results of shaking table tests. Numerical analyses were performed on another four models with the tower indentation ratio of 1:1.5, 1:2, 1:2.5 and 1:3, respectively. The results showed that compared with the aseismic structure model, the acceleration amplification coefficient of each floor of the base seismic isolation model slightly increases with increase in the floor number,but the whole structure response is close to translational motion; for the interlayer seismic isolation model, its acceleration response is close to translational motion, the acceleration amplification coefficient of its chassis is larger than that of the aseismic model, and it increases with increase in the floor number; the damping effect of the interlayer displacement of the base seismic isolation model is remarkable, while the poor damping effect of the interlayer seismic isolation model’s chassis is observed; the chassis responses are quite different for the base seismic isolation model and the interlayer seismic isolation one; the acceleration amplification coefficients of the three structural models increase with increase in the indentation ratio, the amplitude increase values of the base seismic isolation model and the interlayer seismic isolation one are relatively small, and that of the aseismic model is larger; the results can provide a reference for seismic isolation scheme selection and seismic isolation design of a single tower on a large chassis.
吴应雄,黄净,颜学渊,陈梓轩,祁皑. 不同缩进比例的大底盘单塔楼结构隔震性能研究[J]. 振动与冲击, 2017, 36(23): 123-130.
WU Ying-xiong, HUANG Jing, YAN Xue-yuan, CHEN Zi-xuan, QI Ai. Seismic isolation performance of a single tower structure on a large chassis with different indentation ratios. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(23): 123-130.
[1] 谭平,周云,周福霖.大底盘多塔楼结构的混合减震控制[J].世界地震工程,2007,23(2):12-19.(TAN Ping,ZHOU Yun, ZHOU Fulin.Hybrid isolation control for multi-tower structures with a large podium[J].World Earthquake Engineering,2007,23(2):12-19.(in Chinese ))
[2] 李玉珍.大底盘单塔层间隔震结构分析:[D].福州:福州大学,2009.(LI Yuzhen.Research on the single-tower with enlarged base story isolation structure:[D].Fu Zhou:Fuzhou University,2009. (in Chinese ))
[3] 吴应雄,夏侯唐斌,颜桂云等.考虑增设变刚度抗风支座的隔震结构减震分析[J].振动工程学报,2016,29(05):851-859.(WU Yingxiong,XIAHOU Tangbin et al.Analyses of mitigation effects of isolation structure considering additional wind-resistant support of variable stiffness[J].Journal of Vibration Engineering,2016,29(05):851-859.(in Chinese ))
[4] 中华人民共和国行业标准.GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.(Productional standard of the people republic of China.GB50011-2010 Code for seismic design of building[S].Beijing:China Architecture& Building Press,2010.(in Chinese ))
[5] DANG Y,HUO K C.Lateral-Torsional coupled seismic response of asymmetric multi-tower base isolated structures with large floors[J].Advanced Materials Research,2011,243:3975—3979.
[6] Jian Min Jin,Ping Tan,Fu Lin Zhou,Xiang Yun Huang.Shaking table test study on mid-story isolation structures with viscous damper[J].Applied Mechanics and Materials,2012,2031(226).
[7] 王蓉蓉.高层建筑大底盘框架结构的隔震研究:[D].成都:西南交通大学,2013.(WANG Rongrong.Seismic isolation research of high-rise chassis frame structure:[D].Chengdu:SouthWest JiaoTong University,2013.(in Chinese ))
[8] 孙臻,刘伟庆,王曙光等.苏豪银座层间隔震设计与地震响应分析[J].建筑结构,2013,43(18):58-63.(SUN Zhen,LIU Weiqing,WANG Shuguang,et al.Mid-story isolation design and seismic analysis of Suhao Yinzuo building[J].Building Structure,2013,43(18):58-63.(in Chinese ))
[9] 马玉宏,曾宾,赵桂峰等.大底盘层数变化对多裙房高层基础隔震结构的影响[J].广州大学学报(自然科学版),2014,13(1):44-49.(MA Yuhong,ZENG Bin,ZHAO Guifeng,et al.Effects of the number of large podium on the base isolated high-rise structure with multi-skirt building[J].Journal of Guangzhou University (Natural Science Edition ) ,2014,13(1):44-49.(in Chinese ))
[10] 祁皑,郑国琛,阎维明.考虑参数优化的层间隔震结构振动台试验研究[J].建筑结构学报,2009,02:8-16.(QI Ai,ZHENG Guochen,YAN Weimi.Shaking table tests on story-isolation structures considering parametric optimization[J].Journal of Building Structures ,2009,02:8-16.(in Chinese ))
[11] Chang K.C.l.Analytical and experimental studies on seismic behavior of buildings with mid-story isolation[J].Proceedings of the 2009 ATC&SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures,Osaka,2009.
[12] 杨必峰.多塔楼结构的大底盘抗震设计[J].建筑结构,2010(S1):116-119.(YANG Bifeng.Discussion on seismic design for large chassis of multi-tower structure[J].Building Structure,2010(S1):116-119.(in Chinese ))
[13] Petti L, Giannattasio G,De Iuliis M,et al.Small scale experimental testing to verify the effectiveness of the base isolation and tuned mass dampers combined control strategy [J].Smart structures and systems,2010,6(1):57-72.
[14] 吴应雄,王兆樑,祁皑等.叠层橡胶支座与抗风支座组合隔震反应分析[J].振动与冲击,2014,33(5):149-154,CN31-1316/TU, 上海交通大学(WU Ying-xiong,WANG Zhao-liang,QI Ai,et al.Response analysis for a compound isolation structure consisting of laminated rubber[J].Journal of Vibration and Shock,2014,33(5):149-154.(in Chinese )