884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

        袁建力
    （揚(yáng)州大學(xué) 揚(yáng)州 225009）

[提要]  提出了受損框架結(jié)構(gòu)抗震能力的理論分析和鑒定方法，采用損傷指標(biāo)D測(cè)定構(gòu)件的殘余耗能能力，可較好地描述結(jié)構(gòu)在前期地震中的損傷狀況和繼續(xù)經(jīng)受新一輪地震后的損傷總積累。
[關(guān)鍵詞]  前期地震 預(yù)期地震 鋼筋混凝土框架 能量耗散 損傷積累  抗震鑒定

This paper presents a theoretical analysis and appraisal method for earthquake-resistant capability of a damaged concrete frame structure. ln the automatic method, a damage index D is served as a measure of a member's residual energy dissipation capacity, which is capable of predicting reasonably well the damage accumulation of the structure to an expected earthquake B, after it has been damaged by a previous earthquake A. An updated computer program SARCF~Illwas written to carry out the analysis task, which consists of four main components:the hysteretic model for nonlinear response of RC frame members; the damage accumulation model for a plastic hinge section; the simulation of the earthquake ground motion as a random process; the nonlinear dynamic analysis program for the frame analysis. An eight-story three-bay office building analyzed with SARCF-111 demonstrates that the analysis method and the program are effective, and the results can be served for experimential earthquake-resistant appraisal means.
Keywords: previous earthquake; expected earthquake; reinforced concrete frame; energy dissipation; damaged accumulation; earthquake-resistant appraisal