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（悉地國際設(shè)計(jì)顧問（深圳）有限公司， 深圳 518048）
［摘要］寬7m、長1 000m的螺旋環(huán)道通過懸挑鋼板連接件與32顆斜柱偏心連接成一倒錐體螺旋結(jié)構(gòu)，結(jié)構(gòu)體系新穎。基于結(jié)構(gòu)特點(diǎn)，對基礎(chǔ)、環(huán)形承臺、螺旋環(huán)道活荷載分布、斜柱、預(yù)應(yīng)力鋼棒拉桿、螺旋環(huán)道、懸挑鋼板連接件進(jìn)行了研究分析，并對結(jié)構(gòu)線性和非線性屈曲、螺旋環(huán)道人行舒適度、結(jié)構(gòu)抗連續(xù)倒塌以及懸挑鋼板與斜柱的節(jié)點(diǎn)等進(jìn)行專項(xiàng)分析，并有針對性地采取了加強(qiáng)措施。結(jié)果表明結(jié)構(gòu)具有良好剛度和強(qiáng)度，滿足規(guī)范各項(xiàng)指標(biāo)要求。保證了工程的安全性、合理性。
［關(guān)鍵詞］倒錐體螺旋結(jié)構(gòu)； 環(huán)形承臺； 預(yù)應(yīng)力鋼棒拉桿； 螺旋環(huán)道； 懸挑鋼板連接件； 人行舒適度
中圖分類號：TU391文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)17-0046-05
Inverted cone helical structural design of the urban island of Meixi Lake in Changsha
LIU Yunlang, LI Jianwei, FU Xueyi, ZHANG Ming, WANG Ning
(CCDI International (Shenzhen) Design Consultants Co., Ltd., Shenzhen 518048, China)
Abstract:The helical walkway with a width of 7m and a length of 1 000m is eccentrically connected with 32 inclined columns through a cantilevered steel plate connector to form an inverted cone helical structure. The structure system is novel. Based on the structural characteristics, the foundation, ring caps, walkway live load distribution, inclined column, prestressed steel round bar, helical walkway, cantilevered steel plate connectors were studied and analyzed. Special analysis was carried out on the linear and nonlinear buckling of the structure, walking comfort of the walkway, the progressive collapse of the structure, and the joints of the cantilevered steel plate and the inclined column. Take targeted measures to strengthen. The results show that the structure has good rigidity and strength, and meets the requirements of the specifications. The safety and rationality of the project were ensured.
Keywords:inverted cone helical structure; ring cap; prestressed steel round bar; helical walkway; cantilever steel plate connector; walking comfort
作者簡介：劉云浪，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：liu.yunlang@ccdi.com.cn。
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