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[提要]  以某體育館鋼屋蓋結(jié)構(gòu)為實(shí)例，論述了折板網(wǎng)殼結(jié)構(gòu)的選型、受力特點(diǎn)、水平推力的處理方法和模態(tài)分析。研究發(fā)現(xiàn)，該結(jié)構(gòu)的白振頻率呈密集型分布，結(jié)構(gòu)的基本振動(dòng)為水平振動(dòng)，而不象平板網(wǎng)架那樣以豎向振動(dòng)為主，結(jié)構(gòu)表現(xiàn)出良好的受力性能和抗震性能。
[關(guān)鍵詞]  折板  網(wǎng)殼  拱  穩(wěn)定  模態(tài)分析

The folded-plate-latticed-shell is a new type of lattice space structure, having merits of both folded plates and spatial lattice structures. Its mechanical behavior and stability are better than those of the plan grid structures. Based on a gymnasium roof design case, the procedures in structural arrangement, mechanical behavior analysis, method to deal with the horizontal forces and modal analysis are introduced. The results indicate that the natural frequencies of the structure turn to concentrate in a small range.The first mode of the structure is horizontal instead of vertical different
from most plan grid structures. Bearing capacity and seismic performance of the structure are satisfactory.
Keywords:  folded plate; latticed shell; arch; stability; modal analysis

    參  考  文  獻(xiàn)
1．朱忠義，董石麟，高博青，折板網(wǎng)殼的幾何非線性和經(jīng)濟(jì)性分析．建筑結(jié)構(gòu)學(xué)報(bào)，2000，(10)．
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4．高立人等譯．結(jié)構(gòu)概念和體系（第二版）中國(guó)建筑工業(yè)出版社，1999．