- 摘 要
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佘廣軍， 孟昭沛， 吳 棟
（南京市建筑設(shè)計(jì)研究院有限責(zé)任公司，南京 210005）[摘要] 觀光塔形式結(jié)構(gòu)既具有高聳結(jié)構(gòu)典型特征，又因頂部觀光平臺(tái)集中了較大的豎向和水平荷載，使其對重力二階效應(yīng)更加敏感。通過建立一系列不同結(jié)構(gòu)形式和不同高寬比的觀光塔簡化模型，利用有限元分析軟件，對風(fēng)荷載作用下塔體的重力二階效應(yīng)進(jìn)行計(jì)算分析。根據(jù)計(jì)算結(jié)果，分析對比不同形式塔體頂部最大位移和底部最大反力對重力二階效應(yīng)的敏感程度。
[關(guān)鍵詞] 觀光塔；高聳結(jié)構(gòu)；幾何非線性；重力二階效應(yīng)
中圖分類號：TU398.7 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2012) Sl-0402-04Analysis on gravity second-order effects of high-soft structures with sight-seeing tower
She Guangjun, Meng Zhaopei, Wu Dong
( Nanjing Architectural Design and Research Institute Co., Ltd., Nanjing 210005, China)Abstract: The sight-seeing tower is more sensitive with gravity second-order effects, because not only it has the typical model characteristic of lugh-rise structures, but also its top sight-seeing trip bench concentrates much more vertical and horizontalloads. By building a series of simplified models with different structure types and different ratios of high to width, this paper makes calculation and analysis on the gravity second-order effects with the tower under the action of wind loads. According to the result of the calculation, it contrasts the gravity second-order effects sensitive degree of different tower's top biggest displacement and bottom biggest force.
Keywords: sight-seeing tower; lugh-rise structure; geometrical nonlinearity; gravity second-order effects
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