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(同濟(jì)大學(xué)建筑工程系  上海 200092)
【提要】  拱支網(wǎng)殼結(jié)構(gòu)體系是在綜合了網(wǎng)殼(網(wǎng)架)及拱結(jié)構(gòu)的優(yōu)點(diǎn)的基礎(chǔ)上，構(gòu)思出的一種新型大跨度空間雜交結(jié)構(gòu)形式。通過(guò)與一般柱面單層網(wǎng)殼結(jié)構(gòu)的對(duì)比，對(duì)不同矢跨比的單層柱面拱支網(wǎng)殼結(jié)構(gòu)考慮不同拱肋配置下的靜力性能，特別是結(jié)構(gòu)極限承載能力及對(duì)初始幾何缺陷的敏感性進(jìn)行了分析比較。介紹了幾個(gè)采用單層柱面網(wǎng)殼結(jié)構(gòu)作為屋面結(jié)構(gòu)的工程實(shí)例及其采用拱肋加強(qiáng)后的實(shí)際效率。理論分析結(jié)果及工程應(yīng)用表明，在拱結(jié)構(gòu)的幫助下，柱面單層拱支網(wǎng)殼結(jié)構(gòu)的靜力性能得到了明顯的改善。
【關(guān)鍵詞】  大跨空間雜交結(jié)構(gòu)  柱面拱支網(wǎng)殼結(jié)構(gòu)  靜力性能  極限承載能力  初始幾何缺陷敏感性
Investigation on Static Behaviors of Archsupported Singlelayer Reticulated Cylindrical Shells/Li Yuanqi,Shen Zuyan(Dept. of Building Engineering, Tongji University, Shanghai 200092,China)
Abstract:Based on the structural features of reticulated shells and arch structures,archsupported reticulated shell structures are developed as a new largespan space hybrid structural system. In comparison with common singlelayer reticulated cylindrical shells, static behaviors, especiallystructural limit loadcarrying capacities and sensitivity to initial geometrical imperfections, of the archsupported singlelayer reticulated cylindrical shells are investigated considering different rise to span ratios and the number of arches used as ribs. Several practical projects with archsupported singlelayer reticulated cylindrical shells as roofs are introduced to prove the efficiency of this hybrid structual system in practice. The results show that, with the anticipation of arch structures, the static behaviors of the archsupported singlelayer reticulated cylindrical shells are improved obviously.
Keywords:largespan space hybrid structure; archsupported reticulated cylindrical shells; static behaviors; initial geometrical imperfections; limit loadcarrying capacities