基于易損性指數(shù)的鋼筋混凝土框架結(jié)構(gòu)地震損傷評估
[Abstract]:On the basis of traditional seismic vulnerability analysis, the concept of vulnerability index is proposed and used to evaluate seismic damage of structures. By introducing the concept of earthquake damage index in earthquake damage assessment of population structure, combined with the probability of structure failure state obtained from analytical seismic vulnerability analysis, the mathematical expectation of earthquake damage index is regarded as the vulnerability index of single structure. Two groups of reinforced concrete frame structures with different seismic fortification levels are selected as the object of study. The seismic vulnerability curve, the failure state probability curve, the vulnerability index curve and the small earthquakes of the structure are obtained. Vulnerability index of medium and large earthquakes. The analysis results show that the reinforced concrete frame structure designed according to the seismic code of our country can basically meet the performance requirements of "small earthquake is not bad", "moderate earthquake is repairable" and "large earthquake cannot fail". Under the action of large earthquake, the structure can better control the occurrence of more serious damage. With the improvement of the seismic fortification level, the seismic capacity of the structure has been strengthened, but the vulnerability index of the structure under the action of small earthquake, moderate earthquake and large earthquake has been increased.
【作者單位】: 結(jié)構(gòu)工程災(zāi)變與控制教育部重點(diǎn)實(shí)驗(yàn)室(哈爾濱工業(yè)大學(xué));哈爾濱工業(yè)大學(xué)土木工程學(xué)院;
【基金】:國家自然科學(xué)基金項(xiàng)目(51378162,51178150) 國家科技支撐計(jì)劃課題項(xiàng)目(2013BAJ08B01) 中國博士后科學(xué)基金面上項(xiàng)目(2014M551251) 黑龍江省博士后面上基金項(xiàng)目(LBH-Z14114)
【分類號】:TU375.4;TU312.3
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