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常玉珍， 吳敏哲
（西安建筑科技大學(xué)土木工程學(xué)院，西安 710055）[摘要] 組合肋殼是一種新型的空間結(jié)構(gòu)形式，采用組合結(jié)構(gòu)有限單元法對組合肋殼結(jié)構(gòu)的靜力特性及其影響因素進(jìn)行了系統(tǒng)分析，并與帶肋鋼筋混凝土薄殼以及光滑混凝土殼體進(jìn)行了比較。分析結(jié)果表明，隨著矢跨比和截面尺寸的增大，邊界條件接近剛性，組合肋殼的極限承載力增大；與其它兩類殼體相比，由于組合肋中鋼肋的存在，使得組合肋殼整體剛度增大，承載能力提高，結(jié)構(gòu)的薄膜壓力分布更為合理。
[關(guān)鍵詞] 組合肋殼；靜力特性；極限承載力Study on static cbaracteristics of composite ribbed shells
Chang Yuzhen, Wu Minzhe
(School of CMl Engjneering,X'an University of Architecture and Technology,X'an 710055,China)Abstract: The composite ribbed shell structure is a new type of spatial structure. The static characteristics and the influence parameters for composite ribbed shells are analyzed with FEM, and then are compared with ribbed reinforced concrete shells and concrete shells. With span ratio and composite rib section dimension increasing, boundary condition becoming stronger, the ultimate bearing capacity is increased greatly; the whole stiffness matrix and ultimate bearing of composite shell both are higher than the other two shell structures. Ihe membrane forces in composite ribbed shells are more reasonable than those of ribbed reinforced concrete shells because the steel ribs exist.
Keywords: composite ribbed shell;static characteristics;ultimate bearing capacity
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