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（武漢大學(xué)土木建筑工程學(xué)院 430072）
【提要】 傳統(tǒng)的優(yōu)化設(shè)計(jì)僅以最低造價(jià)為目標(biāo)函數(shù)，沒有考慮結(jié)構(gòu)的受力性能指標(biāo)。在對(duì)穹頂結(jié)構(gòu)的最低造價(jià)目標(biāo)函數(shù)進(jìn)行修正的同時(shí)，綜合考慮施工、桿件的制作加工等的要求，提出了操作性較強(qiáng)的改進(jìn)滿應(yīng)力優(yōu)化法，該法在整個(gè)優(yōu)化過程中能使上述兩個(gè)目標(biāo)函數(shù)保持高度的統(tǒng)一。采用文中提出的優(yōu)化方法對(duì)武漢體育中心體育館大跨度張弦穹頂結(jié)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì)，取得了比較好的經(jīng)濟(jì)效益和結(jié)構(gòu)性能。文中的方法對(duì)同類大跨度張弦穹頂結(jié)構(gòu)的設(shè)計(jì)有較好的參考價(jià)值。
【關(guān)鍵詞】 張弦穹頂 優(yōu)化設(shè)計(jì) 受力性能函數(shù)
Optimization Design of Symmetrical Stringdome Structure/Chang Anguo,Xu Han,Han Fang
(School of Civil and Architectural Engineering,Wuhan University,Wuhan 430072,China)
Abstract:The traditional optimization design is only based on the minimum cost objective function and does not consider the mechanical analysis target. The traditional minimum cost objective function and explores the mechanical analysis objective function are revised consi
dering the construction and machining of components and a manipulative reformative fully stress method is presented,which can make the two objective functions keep highly uniform in the whole process of optimization. A gymnasium with large span domestring structure is designed using the method and good economical benefits and perfect mechanical performance are achieved. The method is a valuable reference to the optimization design of congeneric structure.
Keywords:stringdome; optimization design; mechanical analysis objective