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    鄧宗才
    （山東建材學(xué)院建工系  濟(jì)南 250022）

[提要] 通過對(duì)Ⅱ、Ⅲ級(jí)鋼筋混凝土連續(xù)梁的對(duì)比試驗(yàn)，研究了Ⅲ級(jí)鋼筋混凝土連續(xù)梁的彎矩調(diào)幅問題，探討了不同鋼筋型號(hào)、不同混凝土受壓區(qū)高度對(duì)調(diào)幅限值的影響。試驗(yàn)證明：所有Ⅲ級(jí)鋼筋混凝土連續(xù)梁均達(dá)到了充分內(nèi)力重分布且都滿足正常使用要求。本文提出了Ⅲ級(jí)鋼筋混凝土連續(xù)梁的調(diào)幅限值及其適用條件。
[關(guān)鍵詞] 鋼筋混凝土 連續(xù)梁 彎矩調(diào)幅 塑性分析

An experiment investigation of moment limitation amplitude of continuous beams are conducted by using six bars of two spans continuous beam, which includes four main beams withⅡdegree reinforcment steel, two main beams withⅢdegree reinforcment steel. It is found that the continuous beam with Ⅲ degree steel attained fully anew distribution of moment, and those beams met normal using demands. According to the experiment data, the moment limitation amplitude equation and its adaptrve condition are made out.
Keywords: concrete continuous beam; moment limitation amplitude; elastic-plastic analyse