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[提要]  從自然暴露10年的鋼筋混凝土梁中，按鋼筋銹蝕損傷程度選取6根梁進(jìn)行承載力試驗(yàn)，結(jié)果表明，鋼筋銹蝕程度對(duì)梁的承載力有明顯影響，鋼筋銹蝕越嚴(yán)重，承載力越小，但在考慮鋼筋銹蝕損傷后，銹蝕鋼筋混凝土梁的承載力計(jì)算仍可采用規(guī)范方法。
[關(guān)鍵詞]  鋼筋混凝土梁 鋼筋銹蝕  自然暴露 承載力 試驗(yàn)

According to rusty degree of steel-bar, the six RC beams are selected in those beams that have been exposed to the air for 10 years. the experiment for bearing capacity of the six RC beams, reveals that rusty degree of steel-bar had evident influence on bearing capacity of RC beam. The rustier steel-bar is, the lower bearing capacity of beam is. Considering influence of steel-rusty, bearing capacity of beam with rusting steel-bar still can be calculated with the standard method.
Keywords:  RC beam; steel-rusty exposure in the air; bearing capacity; experiment