基于小波变换的地震损伤指标的研究

Study on the seismic damage index based on wavelet transform

文章基于小波变换原理,提出了一个基于小波变换的损伤指标计算模型,并用此指标对4个2种不同边缘约束措施的叠合板式剪力墙和2个普通剪力墙模型的破损进行了分析,计算结果与低周反复荷载下的试验结果吻合良好。该指标不仅反映了试件不同加载阶段的损伤程度,还为判断结构何时屈服提供一定的依据。文章分析结果为编制《叠合板式混凝土剪力墙结构技术规程》的地方行业标准提供了可靠的科学依据。

The paper presents a calculation model of the seismic damage index based on the wavelet transform principle. The seismic damage model for four superimposed slab shear wails with edge restriction measures of two different forms and two general shear walls is analyzed. The calculation results and experimental phenomena are in good agreement. This damage index can not only represent the damage extent at every load stage, but it can also be referred to in judging when the yield of structure happens. The analysis results also provide a reliable scientific basis for compiling the professional standard ＂Technical Specification for Superimposed Slab Concrete Shear Wall Structure＂.