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     李明順  胡德炘  史志華
    （中國(guó)建筑科學(xué)研究院  北京 100013）

[提要]  簡(jiǎn)要回顧了我國(guó)建筑結(jié)構(gòu)可靠性設(shè)計(jì)的歷史沿革，介紹了以概率為基礎(chǔ)的極限狀態(tài)設(shè)計(jì)方法的基本原則和可靠度水準(zhǔn)的設(shè)置依據(jù)，以及這一設(shè)計(jì)方法在國(guó)際上的發(fā)展情況，澄清了一些模糊認(rèn)識(shí)，同時(shí)對(duì)該方法與日漸興起的“以性能為基礎(chǔ)”的建筑結(jié)構(gòu)設(shè)計(jì)之間的關(guān)系提出了作者的思考。
[關(guān)鍵詞]  建筑結(jié)構(gòu)  可靠性  可靠指標(biāo)  失效概率  校準(zhǔn)法

This paper reviews the history for the reliability design of building structures of our country. Basic principles of the probability based limit state design method and relialoility levels of building structures are introduced. The development of this method in the world is also mentioned. Some fuzzy view points have been cleared away. Finally, the relationship between probability based method and performance based method has loeen discussed.
Keywords:  building structures; reliability; reliability index; probability of failure; calibration method