天然橡胶支座(LNR)的等效阻尼比试验研究
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摘要
简要论述了天然橡胶支座(LNR)的力学特性,通过不同温度、不同压应力、不同应变的相关性压剪试验研究了天然橡胶支座等效阻尼比的温度、压应力、应变相关性.试验结果表明常规条件下天然橡胶支座等效阻尼比在2%~3%之间,结合日本的相关资料及设计方法,隔震设计中可不考虑天然橡胶支座的粘滞阻尼.
Machanical characteristics of linear natural rubber bearing is discussed in brief.By means of dependency compressive-shear testing in different temperature,compressive stress,strain,the equivalent damping ratio dependence of linear natural rubber bearing are researched.Based on the testing result,in normal condition,the equivalent damping ratio ranges from 2% to 3%.In view of the data and design method of Japan,the viscous damping of linear natural rubber bearing may not be considered in the seismic-isolation design.
Machanical characteristics of linear natural rubber bearing is discussed in brief.By means of dependency compressive-shear testing in different temperature,compressive stress,strain,the equivalent damping ratio dependence of linear natural rubber bearing are researched.Based on the testing result,in normal condition,the equivalent damping ratio ranges from 2% to 3%.In view of the data and design method of Japan,the viscous damping of linear natural rubber bearing may not be considered in the seismic-isolation design.
引文
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[3]日本ゴム協会免震用積層ゴム委員会.免震用積層ゴムハンドブック[M].日本:理工図酥晔交嵘?2000.
[4]庄学真,周福霖.1200型大直径建筑叠层铅芯橡胶隔震支座性能研究[J].西安建筑科技大学学报:自然科学版,2008,40(3):368-375.ZHUANG Xu-zhen,ZHOU Fu-lin.Research on mechanical characteristics of 1200 laminated lead steel-plate-lami-nated-rubber-bearing isolation bearing for building[J].J.Xi′an Univ.of Arch.&Tech.(Natural Science Edition),2008,40(3):368-375.
[5]刘文光,周福霖.铅芯夹层橡胶隔震垫基本力学性能研究[J].地震工程与工程振动,1999,19(1):93-99.LI U Wen-guang,ZHOU Fu-lin.Research on fundamental mechanic characteristics of lead rubber bearing[J].Earthquake engineering and engineering vibration,1999,19(1):93-99.
[6]杜修力,韩强.方形多铅芯橡胶支座力学性能研究[J].地震工程与工程振动,2006,26(2):125-130.DU Xiu-li,Han Qiang.Mechanical behaviours of square multi-lead rubber bearing[J].Earthquake engineering andengineering vibration,2006,26(2):125-130.
[7]日本免震構造協会.パッシブ制震構造設計施工マニュアル[M].日本:株式会社大◆,2005.
[8]笠井和彦,大熊潔.Kelvin体による線形粘?性ダンパ?簡易モデル化と精度りに関する考察(その1)[J].日本建築学会構造系論文集,2001,550(12):71-78.
[9]日本建築構造技術者協会.JSCA?答制御構造事例集[M].日本:建築構造技術者協会,2005.
[10]日本免震構造協会.免震構造入門[M].日本:株式会社オ?ム社,1995.
[11]日本建築学会.免震構造設計指針[M].日本:技報堂,2001.
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