天然橡胶支座(LNR)的等效阻尼比试验研究  

Test study on the equivalent damping ratio of linear natural rubber bearings

作　　者：金建敏[1,2] 谭平[2] 周福霖[2] 庄学真[2] 沈朝勇[2] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]广州大学工程抗震研究中心,广东广州510405

出　　处：《西安建筑科技大学学报（自然科学版）》2009年第5期663-667,共5页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金重点项目(90815027)

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.

关 键 词：天然橡胶支座 等效阻尼比 压应力 应变相关性 粘滞阻尼 

分 类 号：TU352.1[建筑科学—结构工程]