CAJ | 학술논문

为明确减震榫的受力特点、变形形态及耗能效果，以高铁兰新线32 m简支梁桥的减隔震设计为背景进行研究。推导减震榫核心性能参数的理论估算公式；对全尺寸减震榫试件进行拟静力循环加载试验，验证其滞回耗能性能；采用ABAQUS有限元软件对减震榫进行有限元模拟分析，并与理论计算值和试验结果进行对比。研究结果表明：减震榫滞回曲线饱满，具有稳定的滞回性能和良好的塑性变形能力，等效粘滞阻尼系数可达到40％，是一种理想的耗能元件；推导出的核心性能参数理论公式与有限元计算值和试验测定值非常接近，能够较为准确地反应减震榫的工作性能。
위명학감진순적수력특점、변형형태급모능효과，이고철란신선32 m간지량교적감격진설계위배경진행연구。추도감진순핵심성능삼수적이론고산공식；대전척촌감진순시건진행의정력순배가재시험，험증기체회모능성능；채용ABAQUS유한원연건대감진순진행유한원모의분석，병여이론계산치화시험결과진행대비。연구결과표명：감진순체회곡선포만，구유은정적체회성능화량호적소성변형능력，등효점체조니계수가체도40％，시일충이상적모능원건；추도출적핵심성능삼수이론공식여유한원계산치화시험측정치비상접근，능구교위준학지반응감진순적공작성능。
To make clear the mechanical characteristics ,deformation patterns and energy dissi‐pation effect of shock absorber ,the seismic mitigation and isolation design of a 32‐m span simply‐supported girder bridge on Lanzhou‐Xinjiang High‐Speed Railway was cited as an example and the relevant performance of the shock absorber specimens was studied .The theoretical estimation for‐mula for the core performance parameters of the shock absorber was derived and the pseudo‐static cycling loading tests for the full‐scale shock absorber were made to verify the hysteretic behavior of the shock absorber .The software ABAQUS was used to implement the finite element simulation analysis of the shock absorber and the calculation values and test results of the shock absorber were compared .The results of the study indicate that the hysteretic curves of the shock absorber are full ,the shock absorber has stable hysteretic behavior and good plastic deformation capacity , the equivalent viscous damping factor can reach 40% and the shock absorber is a kind of ideal ener‐gy dissipation component .The calculation values obtained according to the derived formula are ver‐y close to the values of the finite element calculation and tests and can correctly represent the working performance of the shock absorber .