CAJ | 학술논문

针对传统桥梁减隔震支座性能单一，无法满足正常使用荷载及地震极端荷载等不同工况的现状，设计了一种新型多功能滑移‐减隔震支座，通过理论分析与有限元模拟相结合的方式建立了该多功能支座的剪切性能曲线，并阐述了该曲线的力学特性及各个关键点的意义。在此基础上，进行了压缩性能、剪切性能及其相关性试验。结果表明：新型多功能滑移‐减隔震支座能够达到预期目标，可同时满足桥梁在正常使用阶段的滑移和地震作用下的耗能要求；支座剪切性能曲线的有限元分析结果与试验结果吻合良好，有限元分析得到的剪切性能曲线可有效描述其力学行为；所得结论为后续桥梁减隔震设计及动力时程分析提供了参考。
침대전통교량감격진지좌성능단일，무법만족정상사용하재급지진겁단하재등불동공황적현상，설계료일충신형다공능활이‐감격진지좌，통과이론분석여유한원모의상결합적방식건립료해다공능지좌적전절성능곡선，병천술료해곡선적역학특성급각개관건점적의의。재차기출상，진행료압축성능、전절성능급기상관성시험。결과표명：신형다공능활이‐감격진지좌능구체도예기목표，가동시만족교량재정상사용계단적활이화지진작용하적모능요구；지좌전절성능곡선적유한원분석결과여시험결과문합량호，유한원분석득도적전절성능곡선가유효묘술기역학행위；소득결론위후속교량감격진설계급동력시정분석제공료삼고。
The traditional bridge sliding‐isolation bearing's performance was single and couldn't meet the situation in different cases ,such as normal load ,severe seismic load ,etc .In order to solve the problem , a new type of multifunctional sliding‐isolation bearing was designed . Combining the theoretical analysis and finite element simulation ,the shear behavior curve of the new type multifunctional sliding‐isolation bearing was established .The mechanical property and the meaning of each key point of the curve were explained . Based on this , the correlation experiments on the compression behavior ,shear behavior of the sliding‐isolation bearing were carried out . Results show that the new type of multifunctional sliding‐isolation bearing can achieve the predicted target . T he developed bearing can meet the bridge demands of sliding in normal use and energy dissipation under earthquake action .Moreover ,the finite element analysis results of shear behavior curve of bearing agree well with the experiment results .Therefore ,the theoretical shear behavior curve can effectively reflect the mechanical property of bearing .The obtained results can provide basis for sliding‐isolation design and dynamic time‐history analysis of the bridges in the future .