阻尼器支撑形式对平台连体式结构减震性能影响研究

Study on the Effect of Damper Support Form on the Damping Performance of Platform Connected Structure

摘要: 为研究阻尼器支撑形式对平台连体结构减震性能的影响，本文以某高层平台连体式结构作为研究对象，设置了单斜撑、V字撑和倒“V”字撑三种不同的阻尼器支撑形式。基于YJK软件建立模型，利用ETABS有限元软件进行模型校核，针对多遇地震和罕遇地震进行了动力时程分析。通过对比无控结构和有控结构在地震作用下的减震率、附加阻尼比、能量图和滞回曲线，结果显示：设置阻尼器的有控结构地震响应显著减小，且布置在平台处的阻尼器有效提升了减震效果，保证了主体结构的安全性。总体而言，有控结构的减震率与抗震性能均显著优于无控结构，其中布置倒“V”字撑形式的有控结构减震效果最优。

Abstract: In order to study the effect of damper bracing form on the energy dissipation and seismic damping of platform connected structure, this paper takes a high-rise platform connected structure as the research object, and three different damper bracing forms, namely, single diagonal bracing, V bracing and inverted “V” bracing, are set up. The model was established based on YJK software, and the ETABS finite element software was used for model calibration, and the dynamic time course analysis was carried out for the multiple-occurrence and rare-occurrence earthquakes. By comparing the damping rates, additional damping ratios, energy diagrams and hysteresis curves of the uncontrolled structure and the controlled structure under seismic action, the results show that the seismic response of the controlled structure with dampers is significantly reduced, and the dampers arranged at the platform effectively improve the damping effect and ensure the safety of the main structure. Overall, the damping rate and seismic performance of the controlled structure are significantly better than that of the uncontrolled structure, and the seismic damping effect of the controlled structure with inverted “V” bracing is the best.