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(1 華中科技大學(xué)土木工程與力學(xué)學(xué)院， 武漢430074； 2 華中科技大學(xué)控制結(jié)構(gòu)重點(diǎn)實(shí)驗(yàn)室，武漢430074)

［摘要］對(duì)鋼筋混凝土井式梁結(jié)構(gòu)進(jìn)行了塑性極限分析，得出了極限承載力的實(shí)用計(jì)算通式及相應(yīng)的系數(shù)供設(shè)計(jì)使用。假設(shè)各井式梁間內(nèi)力比例與彈性結(jié)果相同，并考慮不同的邊界條件，結(jié)果表明：對(duì)井式梁結(jié)構(gòu)進(jìn)行塑性極限分析，比彈性計(jì)算結(jié)果更接近實(shí)際的受力狀態(tài)，避免了過量的內(nèi)力調(diào)幅，使設(shè)計(jì)更為優(yōu)化。

［關(guān)鍵詞］井式梁結(jié)構(gòu)；塑性極限分析；內(nèi)力調(diào)幅

Plastic limit analysis of reinforced concrete waffle

Zhang Xianjin1, Fu Aiqun2

(1 School of Civil Eng. & Mechanics, HUST, Wuhan 430074, China; 2 Hubei Key Laboratory of Control Structure, HUST, Wuhan 430074, China)

Abstract:Plastic limit analysis is used to analyze reinforced concrete waffle structure.By this method, the general formulas and relevant coefficients of the ultimate bearing capacity are determined for design. On the assumption that the proportion of each beam internal force is identical with elastic one, different boundary conditions can be considered. The conclusion indicated that the result of plastic limit analysis of waffle is more adjacent to the factual state, and avoid the case of excessive amplitude modulation of internal force. The design of waffle will be more economical.

Keywords:waffle; plastic limit analysis; amplitude modulation of internal force

作者簡(jiǎn)介：張先進(jìn)，工學(xué)碩士，副教授，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:engineerzhang@126.com。