建筑LRB橡胶支座的老化和徐变性能研究
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摘要
老化和徐变性能是LRB橡胶隔震支座重要的长期性能指标,对建筑LRB600原型橡胶支座进行了老化和15MPa持续加载下的徐变性能测试试验。测得了隔震橡胶支座初始状态和相当于60a后的热老化力学特性变化率,以及橡胶支座在1330h持续荷载作用下的徐变量。最后,基于测试结果提出了橡胶支座在正常使用状态下的徐变率预测方程。
Aging and creep properties are the important long-term behavior indexes of rubber bearing.Tests on aging and creep behaviors of LRB 600 under the continuous pressure of 15MPa were carried out.The horizontal hystereses of LRB in initial state,the change rate of thermal aging mechanical behavior after equivalent 60 years and the creep values of LRB after 1330 hours were obtained from the tests.Based on the test results,a predicting equation is summarized for predicting the creep ratio of LRB in normal service state in the end of the paper.
Aging and creep properties are the important long-term behavior indexes of rubber bearing.Tests on aging and creep behaviors of LRB 600 under the continuous pressure of 15MPa were carried out.The horizontal hystereses of LRB in initial state,the change rate of thermal aging mechanical behavior after equivalent 60 years and the creep values of LRB after 1330 hours were obtained from the tests.Based on the test results,a predicting equation is summarized for predicting the creep ratio of LRB in normal service state in the end of the paper.
引文
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[9]Itoh Y,Gu H S.Prediction of aging characteristics in natural rubber bearings used in bridges[J].Journal of Bridge Engineering ASCE,2009,14(2):122-128.
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[11]安井健治,早川邦夫,山上聡.積層ゴムの経年変化[C].日本:日本建築學會,2007:887-888.YASUI Kenji,HAYAKAWA Kunio,YAMAGAMI Satoshi.Aged deterioration of natural rubber bearing[C].Japan:Architectural Institute of Ja-pan,2007:887-888.
[2]刘文光,庄学真,周福霖,等.中国铅芯夹层橡胶隔震支座各种相关性能和长期性能研究[J].地震工程与工程振动,2002,22(1):114-120.LIU Wenguang,ZHUANG Xuezhen,ZHOU Fulin,et al.Dependence and durability properties of chinese lead plug rubber bearings[J].EarthquakeEngineering and Engineering Vibration,2002,22(1):114-120.
[3]森田慶子,山上聡,高山峰夫,等.免震構造用天然ゴム系積層ゴムアイソレータのクリープ実驗[R].日本:日本建築學會,2010:189-192.MORITA Keiko,YAMAGAMI Satoshi,TAKAYAMA Mineo,et al.Long-term Performance Test of Laminated Rubber Bearings for Seismic IsolationSystem[R].Japan:Architectural Institute of Japan,2010:189-192.
[4]刘文光,庄学真,林佳,等.夹层橡胶隔震支座长期力学性能及耐火性能试验研究[J].华南建设学院西院学报,2000,8(3):1-10.LIU Wenguang,ZHUANG Xuezhen,LIN Jia,et al.Durability properties and fire resistance of plug rubber bearings[J].Journal of South ChinaConstruction University,2000,8(3):1-10.
[5]刘文光,李峥嵘,周福霖,等.低硬度橡胶隔震支座各种相关性及老化徐变特性[J].地震工程与工程振动,2002,22(6):115-121.LIU Wenguang,LI Zhengrong,ZHOU Fulin,et al.Various dependence and duration Properties of low stiffness rubber bearings[J].Earthquake En-gineering and Engineering Vibration,2002,22(6):115-121.
[6]程桂胜.桥梁天然橡胶支座老化特性的预测[J].世界桥梁,2010,(1):63-65.CHENG Guisheng.Prediction of aging properties in natural rubber bearings used in bridges[J].World Bridges,2010,(1):63-65.
[7]周福霖.工程结构减震控制[M].北京:地震出版社,1997.ZHOU Fulin.Recommendation for the design of base isolated buildings[M].Beijing:Seismological Press,2006.
[8]浜口弘樹,相沢覚,鮫島祐介,等.約20年間使用した積層ゴムの経年変化調查[C].日本:日本建築學會,2009:393-398.HAMAGUCHI Hiroki,AIZAWA Satoru,SAMEJIMA Yusuke,ea tl.A study of aging effect on a rubber bearing after about twenty years in use[C].Japan:Architectural Institute of Japan,2009:393-398.
[9]Itoh Y,Gu H S.Prediction of aging characteristics in natural rubber bearings used in bridges[J].Journal of Bridge Engineering ASCE,2009,14(2):122-128.
[10]中村嶽,鈴木哲夫,岡田宏.実免震建物の積層ゴムの経年変化に関する検討[C].日本:日本建築學會,1998:23-26.NAKAMURA Takashi,SUZUKI Tetsuo,OKADA Hiroshi.Aging characteristics of natural rubber bearings in actual base-isolated building[C].Japan:Architectural Institute of Japan,1998:23-26.
[11]安井健治,早川邦夫,山上聡.積層ゴムの経年変化[C].日本:日本建築學會,2007:887-888.YASUI Kenji,HAYAKAWA Kunio,YAMAGAMI Satoshi.Aged deterioration of natural rubber bearing[C].Japan:Architectural Institute of Ja-pan,2007:887-888.
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