基于RC框架结构破坏损伤的地震烈度物理标准研究

为了研究基于钢筋混凝土框架结构破坏损伤的地震烈度物理标准,将15个地震动参数按特性(峰值、频率、持时和能量)分成4类,将地震记录按地震动3要素(峰值、频率、持时)分成3组,求出了每组记录作用下RC结构的破坏指数,计算了各个参数值和破坏指数的相关系数.比较分析这上述相关系数发现ap、vp、vps、dps、Ein、Eh能够部分或全部地表征地震动对RC结构的潜在破坏势,其中ap、vps、Ein、Eh这4个参数都和烈度有很好的相关性,可以作为烈度的物理标准.

Study of physical measure of seismic intensity based on damage to RC frames

In order to study the physical measure of seismic intensity based on the damage to RC frames, fifteen ground motion parameters were divided into 4 kinds according to their property and the ground motion records were grouped into 3 teams based on the three factors, that is amplitude, spectra and duration, of ground motion. The correlation coefficient between the damage index of three RC frames subjected to each group of ground motions and the corresponding ground motion parameters were calculated. Then the analysis and comparison of correlation coefficient were conducted and the result implies that ap, vp, vps, dps, Ein, Eh can reflect the damage potential to RC frames more or less. Furthermore, ap, vps, Ein, Eh have good correlation with seismic intensity and they can serve as the physical measure of seismic intensity.