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      趙挺生
    （冶金部安全環(huán)保研究院 武漢 430081）

[提要]  探討了現(xiàn)存建筑物可靠性評(píng)價(jià)的極限狀態(tài)方法，提出荷載水平方法，建立了結(jié)構(gòu)構(gòu)件可靠性評(píng)價(jià)的極限狀態(tài)準(zhǔn)則。基于結(jié)構(gòu)失效的機(jī)構(gòu)理論，提出結(jié)構(gòu)體系可靠性評(píng)價(jià)的“破損機(jī)構(gòu)”方法，以使結(jié)構(gòu)成為“破損機(jī)構(gòu)”或“局部破損機(jī)構(gòu)”的“破損截面”的最高等級(jí)作為結(jié)構(gòu)體系可靠性評(píng)級(jí)。
[關(guān)鍵詞]  現(xiàn)存建筑物 可靠性 極限狀態(tài) 破損機(jī)構(gòu)

Based on the principle of limit state mechanism of structures, a damage mechanism method is put forward to evaluate the reliability levels of the structural system. lf enough amount of damage members are formed in the structural system, which may cause it to become a mechanism or local mechanism,  then it is defined as a damage mechanism or local damage mechanism, and its reliability level is evaluated by the grade of the member.
Keywords: existfng buildings; reliability; limit states; damage mechanism