钢－混凝土混合结构模型动力特性的试验研究

Experimental Investigations of the Dynamic Characteristics of a 23-Storey Steel-RC Mixed Structure Model

本文是钢－混凝土混合结构模型试验研究的一部分。本文对一个２３层钢－混凝土混合结构１／２０模型的动力特性进行了试验研究。为了获得模型的柔度特性、频率、阻尼等进行了脉动试验、自由振动、锤击试验等。为了达到模型相似要求，用铁块作为配重施加于模型上。上述试验项目是在配重施加前后分别进行的。配重前后的模型试验结果与理论分析结果符合良好。

This paper reports part of the experimental investigations of the 1/20 scale model of 23-storey Steel-RC mixed structure model,in which the dynamic characteristics were experimentally studied.The model was subjected to pulsation,vibration,free vibration and hammering tests in order to investigate its flexibility,frequency and damping characteristics.The tests were conducted before and after the mass of the model was augmented with iron ballast.to meet the similitude requirements for gravity force and mass characteristics of the model.The experimental results agreed reasonably well with the analytically generated characteristics by the model for cases both with and without iron ballast augmentation.