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《Journal of Highway and Transportation Research and Development》 2011-04
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Study on Application of Lead Extrusion Dampers in Seismic Control of Viaducts

YAN Weiming,LI Yong,CHEN Yanjiang,SU Liang (Beijing Laboratory of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing,100024,China)  
To study the hysteretic behavior of lead extrusion damper(LED) and its application in the seismic control of viaducts,experimental research on LEDs according to different heights and lengths of the convex of extrusion axis,and numerical simulation on the application feasibility and design methods of the LEDs in the seismic control of viaducts were conducted.The result shows that(1) the height and length of axis convex can affect the yield force of LEDs,and the yield force increases with the increases of the height and length of axis convex;(2) it is necessary to take consideration of automobile braking force,temperature effect and expansion joint width when LEDs are used for seismic control of viaducts;(3) the presented three seismic control methods of the application of LEDs is demonstrated to be feasible and possess good seismic control effects.
【Fund】: 国家自然科学基金资助项目(9071503250978009);; 北京市教育委员委员会科技计划重点项目(KZ200910005002)
【CateGory Index】: U442.55
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