阻尼填充墙SBS层性能试验研究
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摘要
对阻尼填充墙的SBS层进行水平往复加载试验,研究了竖向压应力、加载频率和卷材层数对SBS层力学性能的影响及其耐疲劳性能。试验结果表明:(1)SBS层工作性能稳定,滞回曲线饱满对称,SBS层产生黏滞滑移耗能,耗能性能良好。(2)竖向压应力、加载频率和卷材层数的变化对SBS层力学性能具有一定的影响;随着竖向压应力的增大,SBS层的早期抗剪切刚度显著增大,耗能性能小幅提升;SBS层具有速度相关性,加载频率增大时,SBS层的耗能性能明显提高;增大卷材层数会致使SBS层的剪切刚度和耗能效果降低。(3)疲劳试验中,SBS层的剪切刚度和耗能量有一定的衰减,但等效黏滞阻尼系数有所上升,滞回环形状基本不变,SBS层仍可有效耗能,耐疲劳性能良好。
The performance of SBS damping layer,which was applied to damping infill walll with different influence factors,was studied. The factors were vertical compressive stress,loading frequency,material layers and fatigue. The test results show that:( 1) SBS layer realizes viscous sliding dissipation and the performance is stable.The hysteretic curves are plump and symmetrical,and the energy dissipation performance is high.( 2) The factors of vertical compressive stress,loading frequency and material layers have a certain influence on the mechanical properties of SBS layer. With the increasing of the vertical compressive stress,not only the early shear stiffness but also the energy dissipation performance of SBS layer increases in different degrees. The performance of SBS layer is correlative with loading speed. When the loading frequency increases,the energy-dissipation capacity of SBS layer increases obviously. Increasing material layer would cause the equivalent shear stiffness and energy consumption to decrease.( 3) During the fatigue test,the shear stiffness and the energy consumption have varying degrees of attenuation,but the equivalent viscous damping coefficient of SBS layer has not. After fatigue test,the SBS layer still has high fatigue resistant performance and the hysteresis loop and the energy performance are great.
The performance of SBS damping layer,which was applied to damping infill walll with different influence factors,was studied. The factors were vertical compressive stress,loading frequency,material layers and fatigue. The test results show that:( 1) SBS layer realizes viscous sliding dissipation and the performance is stable.The hysteretic curves are plump and symmetrical,and the energy dissipation performance is high.( 2) The factors of vertical compressive stress,loading frequency and material layers have a certain influence on the mechanical properties of SBS layer. With the increasing of the vertical compressive stress,not only the early shear stiffness but also the energy dissipation performance of SBS layer increases in different degrees. The performance of SBS layer is correlative with loading speed. When the loading frequency increases,the energy-dissipation capacity of SBS layer increases obviously. Increasing material layer would cause the equivalent shear stiffness and energy consumption to decrease.( 3) During the fatigue test,the shear stiffness and the energy consumption have varying degrees of attenuation,but the equivalent viscous damping coefficient of SBS layer has not. After fatigue test,the SBS layer still has high fatigue resistant performance and the hysteresis loop and the energy performance are great.
引文
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[3]黄海生.改性沥青隔震垫隔震性能的理论研究和实验分析[D].杭州:浙江大学,2004.HUANG Haisheng.Research and experiment analyse on the effect of a new type asphaltum on the base isolation building[D].Hangzhou:Zhejiang University,2004.(in Chinese)
[4]吕虎.改性沥青隔震垫及其隔震效果的理论与试验研究[D].武汉:华中科技大学,2012.LV Hu.Theoretical and Experimental study of the modified bitumen pad and its isolation effect[D].Wuhan:Huazhong University of Science and Technology,2012.(in Chinese)
[5]王金昌,钱国桢,马红观,等.SBS改性阻尼垫用于砖混房屋隔震性能分析[J].建筑结构,2012(42):542-544.WANG Jinchang,QIAN Guozhen,MA Hongguan,et al.Seismic resisting analysis of SBS material to masonry building[J].Building Structure,2012(42):542-544.(in Chinese)
[6]付杰,熊世树,杨华荣.SBS改性沥青隔震支座性能及其应用研究[J].土木工程与管理学报,2013,30(4):44-48.FU Jie,XIONG Shishu,YANG Huarong.Properties and application research of SBS modified asphalt isolator[J].Journal of Civil Engineering and Management,2013,30(4):44-48.(in Chinese)
[7]钱国桢,许哲,石树中,等.两种农村简易隔震试点建筑介绍[J].工程抗震与加固改造,2014,36(2):27-34.QIAN Guozhen,XU Zhe,SHI Shuzhong,et al.Introduction of two simple equipped base-isolation buildings in countryside[J].Earthquake Resistant Engineering and Retrofitting,2014,36(2):27-34.(in Chinese)
[8]周云,郭阳照,廖奕发,等.阻尼填充墙单元性能试验研究[J].土木工程学报,2013,46(5):56-63.ZHOU Yun,GUO Yangzhao,LIAO Yifa,et al.Experimental study on the performance of damped infill wall unit[J].China Civil Engineering Journal,2013,46(5):56-63.(in Chinese)
[9]周云,郭阳照,杨冠男,等.阻尼砌体填充墙框架结构抗震性能试验研究[J].建筑结构学报,2013,34(7):89-96.ZHOU Yun,GUO Yangzhao,YANG Guannan,et al.Experimental study on seismic behavior of frame structure with damped infill wall[J].Journal of Building Structures 2013,34(7):89-96.(in Chinese)
[10]郭阳照,周云,甘英杰,等.新型框架阻尼填充墙性能分析[J].振动与冲击,2013,32(14):127-133.GUO Yangzhao,ZHOU Yun,GAN Yingjie,et al.Performance analysis of a new-type damped infill wall[J].Journal of Vibration and Shock,2013,32(14):127-133.(in Chinese)
[11]廖奕发,郭阳照,杨冠男,等.黏弹阻尼层设计参数对阻尼填充墙框架抗震性能的影响分析[J].地震研究,2014,37(2):280-287.LIAO Yifa,GUO Yangzhao,YANG Guannan,etc.Seismic behavior analysis of damped infill wall frame with different design parameters of viscoelastic damping layer[J].Journal of Seismological Research,2014,37(2):280-287.(in Chinese)
[12]JGJ101-1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.JGJ101-1996 Aseismic Test Method Procedure[S].Beijing:China Building Industry Press,1997.(in Chinese)
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