三榀高性能钢－混凝土组合楼板激励响应互相关分析

基于研发的空气调频激励装置，以三榀高性能钢－混凝土组合楼板模型激励响应动力特性试验测试为基础，通过构建榀－榀互相关函数分析模式，进行了该类型组合楼板结构的加速度激励响应和位移激励响应榀－榀互相关分析。研究表明，组合楼板榀与榀之间的加速度响应与位移响应激励过程由瞬态、稳态和衰减三个阶段组成。在瞬态阶段、稳态阶段和衰减阶段的阶段性互相关系数大小不一，互相关分布规律不同。瞬态阶段互相关性表现出稳定的抛物线分布规律；稳态阶段互相关分布规律呈现平滑的抛物线分布状态；衰减阶段互相关性均表现出榔头型分布规律。

TT-CCA of Excitation Response for Three Pieces of High Performance Steel-Concrete Composite Plate

Based on the developed excitation equipment of air frequency modulation, the test of dynamic characteristics of excitation response was carried out for this type of three pieces of high performance steel-concrete composite plate. Moreover, its truss-trusses cross-correlation analysis(TT-CCA) was also launched for performances of acceleration and displacement through the analysis modes of truss-trusses correlation functions. It is shown that the excitation process consists of three phases: transient, steady state, and attenuation, and its correlation coefficients are not the same and its cross-correlation distributions are different for performances of acceleration and displacement in transient phase, steady phase and attenuation phase.Intransient phase, cross-correlation shows a steady parabolic distribution law. In steady-state phase, the cross-correlation distribution law presents a smooth parabolic distribution state. And in the attenuation phase, the cross-correlation shows the taro-shaped distribution law.