Behavior Study on High Damping Seismic Isolation Rubber Bearings for Bridges
CHEN Yan-jiang1 GUO Kai-min1 LI Yong2 CHEN Fe1
1. Beijing Laboratory of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing,100024;
2. Department of Civil Engineering, Tsinghua University, Beijing,100084
Abstract:High damping seismic islolaton rubber bearings (HDRBS) as a new kind of isolation rubber with the performance of consuming energy have been used in bridge seismic isolation control recently. In order to study the hysterertic behavior of this new kind of isolation rubber, it selected high damping seismic islolaton rubber bearings used in a highway bridge for vertical compression and horizontal shear loading testsand then to study the effect of the vertical stress, horizontal ultimate shear strain, loading frequency and loading times on the hysteretic properties. The results showed that hysteretic curve of HDRBS is more plump, consume energy well and after repeated cyclic loading the performance of consuming energy does not appear decreasing trend. In addition loading frequency have some effect on the equivalent bearing stiffness and equivalent damping ratio.
[1] 杜修力,韩强,李忠献等.5.12汶川地震中山区公路桥梁震害及启示[J].北京工业大学学报,2008,34(12):1270-1279.
DU Xiu-li, HAN-Qiang, LI Zhong-xian et al. The Seismic Damage of Bridges in the 2008 Wenchuan Earthquake and Lessons form Its Damage[J].JOURNAL OF BEIJING UNIVERSITY OF TECHNOLOGY,2008,34(12):1270-1279.
[2] 范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001.
FAN Li-chu, WANG Zhi-qiang. Bridge Seismic Isolation Design [M]Beijing:China Communications Press,2001.
[3] 周锡元,闫维明,杨润林.建筑结构的隔震、减震和振动控制[J].建筑结构学报,2002,23(2):2~12.
ZHOU Xi-yuan, YAN Wei-ming,YANG Run-lin.Seismic Base Isolation, Energy Dissipation and Vibration Control of Building Structures[J]. JOURNAL OF BUILDING STRUCTURES,2002,23(2):2~12.
[4] 苏经宇,曾德民.我国建筑结构隔震技术的研究和应用[J].地震工程与工程振动,2001,21(4):94-101.
SU Jing-yu, ZENG De-min. Research and Application of Seismic Isolation of Buildings in China[J]. EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION,2001,21(4):94-101.
[5] 侯宝隆.日本隔震技术的新发展与控震技术的实际应用.工业建筑,2000,30(11):74~78.
New Developments of Japan's Isolation Technology and the Practical Application of Earthquake Control Industrial Construction ,2000,30(4):94-101
[6] 杨迪雄,李刚,程耿东.隔震结构的研究概况和主要问题[J].力学进展,2003,33(3):302~312.
YANG Di-xiong, LI Gang, CHENG Geng-dong. Research Overview and Key Issues of Isolated Structures[J]. ADVANCES IN MECHANICS, 2003,33(3):302~312.
[7] 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.
WU Ying-xiong,WANG Zhao-liang,QI Ai,et al.Response analysis for a compound isolation structure consisting of laminated rubber bearings and wind-resistant supports[J].Journal of Vibration and Shock,2014,33(5):149-154.
[8] 袁涌,朱宏平,资道铭.高阻尼橡胶隔震支座的力学性能及隔震效果研究[J].工程抗震与加固改造,2008,30(3):16~20.
YUAN Yong, ZHU Hong-ping, DAO Zi-ming. Experimental Study on Characteristics and Isolator Effect of High-Damping Rubber Bearing[J]. Earthquake Resitant Engineering and Retrofitting, 2008,30(3):16~20.
[9] Zonta D,Zandonini R,Bortot F.A reliability-based bridge management concept[J].Structure and Infrastructure Engineering,2007,3(3):215-235.
[10] Li V O K,Silvester J A.Performance analysis of networks with unreliable components[J].IEEE Transactions on Communications,1984,32(10):1105-1110.
[11] JT/T 842-2012公路桥梁高阻尼隔震橡胶支座[S].
[12] GB/T 20688.1-2007 橡胶支座 [S].2007.