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Experimental Seismic-Performance Evaluation of Integrated Isolation/Restraint Systems for Heavy HVAC Equipment 重型暖通空调设备综合隔震/约束系统的试验抗震性能评估
本文的试验研究旨在评估重型暖通空调设备的集成隔离/约束(I/R)系统的抗震性能。在由四个I/R系统支持的重型离心式制冷机上进行了地震模拟实验。设备的峰值响应量和感应到I/R系统的峰值动力被视为I/R系统抗震性能评估的关键部件。试验计划包括地震和系统识别试验,并纳入了不同的输入运动振幅和I/R系统约束部件的不同配置。试验结果表明,通过I/R系统约束部件中发生的冲击来限制设备的位移,会导致设备的加速度响应放大,并导致I/R系统中产生过大的动力。 在整个实验过程中,I/R系统经历的动态力远高于其静态设计能力。约束部件的配置变量,尤其是间隙尺寸,被证明对I/R系统的抗震性能有影响。在本研究中考虑的约束组件的不同配置中,间隙尺寸最小的配置导致了最佳的整体抗震性能。单位:双引文:ASHRAE交易,第114卷,pt。2008年1月1日,纽约
The experimental study presented in this paper is aimed at evaluating the seismic performance of integrated isolation/ restraint (I/R) systems for heavy HVAC equipment. Earthquake simulator experiments were conducted on a heavy centrifugal chiller supported by four I/R systems. The peak response quantities of the equipment and the peak dynamic forces induced into the I/R systems were considered as the key components for the seismic-performance evaluation of the I/R systems. The test plan included seismic and system-identification tests and incorporated different input motion amplitudes and different configurations of the restraint components of the I/R systems. The test results showed that limiting the displacement of the equipment by the impacts occurring in the restraint components of the I/R systems resulted in amplification of the acceleration response of the equipment and excessive dynamic forces induced into the I/R systems. Throughout the experiments, the I/R systems experienced dynamic forces much higher than their static design capacity. The configuration variables of the restraint component, particularly the gap size, were proven influential on the seismic performance of the I/R systems. Among different configurations of the restraint component considered in this study, the configuration with the smallest gap size resulted in the best overall seismic performance.Units: Dual
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