基于小波变换的钢筋混凝土框架-剪力墙结构地震损伤分析  

Seismic damage analysis of reinforced concrete frame-shear wall structure based on wavelet transform

作　　者：施利洋 孙敦本[1] 

机构地区：[1]南京林业大学土木工程学院,南京210037

出　　处：《中国科技论文》2017年第1期41-45,共5页China Sciencepaper

基　　金：江苏高校优势学科建设工程资助项目

摘　　要：为分析地震反应信号在不同频带的能量分布规律,小波变换成为分析非平稳信号的有力工具。基于大型通用有限元软件ABAQUS建立1个8层的钢筋混凝土框架-剪力墙结构,采用混凝土材料的塑性损伤本构模型和金属材料的经典塑性理论,模拟分析钢筋混凝土多层框架-剪力墙结构的地震损伤发展全过程。利用小波分析对结构不同时段的响应信号在频域内进行分析,讨论了时段响应信号能量在各频带上的分布规律。计算结果表明:随着结构损伤的不断演化,小波能量往低频阶段集中,当低频能量达到饱和时结构达到极限承载能力状态,分析结果与损伤模拟的破坏状态一致。During the structural seismic damage accumulation process,the energy change of the structural response signal is bound to occur.In order to analyze the energy distribution,the wavelet transform was employed to evaluate the non-stationary signal.An 8-storey reinforced concrete frame-shear wall structure was developed by using the finite element software ABAQUS,which used the plastic damage constitutive model and the classical plastic theory of metal.The whole process of seismic damage development of reinforced concrete multi storey frame-shear wall structure was evaluated.Wavelet analysis was used to analyze the response signals of different time periods in the frequency domain and the distribution of the energy of each time period in different frequency bands.The results showed that wavelet energy concentrated in the low frequency range with the continuous evolution of structural damage.When saturation was reached in the low frequency energy,the ultimate bearing capacity state was reached for the structure.Calculation result was consistent with the damage state,which is a new idea for the seismic damage analysis of high rise reinforced concrete structures.

关 键 词：框剪结构 损伤分析 地震动响应 小波变换 能量分布 

分 类 号：TU311.3[建筑科学—结构工程] TU398.2