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陳肇元 （清華大學(xué)土木系 北京 100084)杜拱辰 （中國建筑科學(xué)研究院 北京100013）
[提要] 討論了建筑結(jié)構(gòu)設(shè)計規(guī)范采用可靠度設(shè)計方法的缺陷與問題。結(jié)構(gòu)設(shè)計規(guī)范面對復(fù)雜多樣的結(jié)構(gòu)群體，從統(tǒng)計數(shù)學(xué)觀點出發(fā)的可靠度設(shè)計方法難以完整描述和概括這些結(jié)構(gòu)設(shè)計中需要考慮的眾多不確定性與不確知性。規(guī)范中的可靠度設(shè)計方法尚不成熟。目前，用多安全系數(shù)表達(dá)的設(shè)計方法可能更適用于各種結(jié)構(gòu)的設(shè)計規(guī)范。
[關(guān)鍵詞] 混凝土結(jié)構(gòu) 結(jié)構(gòu)設(shè)計 設(shè)計規(guī)范 可靠度The problems from application of reliability method in structural design codes are discussed.ln fact, the structural design code must be geared to the needs of a large circle of complex and various structures, many uncertainties, such as randomness and fussyness, and ignorance must be considered. Some of them cannot be described by probabilistic method, which has been commonly used in current design codes. In this case, the multi-safety-factor may be more flexible for vanous different structural codes.
Keywords: structural design; design codes; reliability
