粘弹性耗能器的性能与结构减振试验研究

根据土木结构的特点和要求，选用三种国产粘弹性材料制作相应的耗能器，分别进行了变频、变温、变应变、常温与低温疲劳及极限变形等耗能器性能试验，并选用ＺＮ－２２型粘弹性材料制作的耗能器进行了结构减振模拟地震振动台试验。研究了这些材料的主要性能指标——剪切贮能模量、耗能因子的变化规律，分析了频率、温度、应变和疲劳效应等因素对粘弹性材料性能参数的影响，分析了结构减振试验的效果。在此基础上，提出了粘弹性耗能器设计和制作的一些要求以及国产粘弹性材料用于土木结构减振时进一步改性的目标。

Experimental Study on Properties of Viscoelastic Dampers and Seismic Vibration Suppression Effects of Viscoelastical Damped Structures

In this paper, based on the characteristics and requirements of civil engineering, three kinds of domestic viscoelastic materials are selected to make corresponding viscoelastic dampers. Lots of tests in respect with frequency, temperature, strain, ultimate deformation, low and normal ambient temperature are done with those dampers, and the dampers made of ZN 22 type viscoelastic materials are incorperated in a high rise steel structure and tested on seismic simulation table. The main performance parameters of those materials, such as shear storage modulus, loss factor and their variation rules, are studied, and the effects of frequency, temperature, strain and fatigue on the performance of those materials are analyzed. Seismic vibration suppression effects of viscoelastical damped structures are tested too. Based on the researches mentioned above the requiremets in the further property improvement of viscoelastic materials and the design of the dampers when domestic viscoelastic materials are used for earthquake engineering are pointed out.