- 摘 要
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（深圳市同濟人建筑設(shè)計有限公司， 深圳 518000）
［摘要］混凝土結(jié)構(gòu)的收縮徐變貫穿于結(jié)構(gòu)全生命周期，對結(jié)構(gòu)豎向構(gòu)件產(chǎn)生變形差異，在超高層中引起的次內(nèi)力效應(yīng)與荷載效應(yīng)相當(dāng)。采用修正后的B3模型對騰訊濱海大廈的豎向構(gòu)件進行樓層施工前、樓層施工后、連接體提升后、正常使用階段的收縮徐變分析，獲得各構(gòu)件的變形幅值。對高區(qū)連接體桁架層豎向構(gòu)件的變形差異引起的次內(nèi)力進行分析。結(jié)果表明，構(gòu)件收縮徐變變形量與荷載作用下彈性變形量相當(dāng)；徐變變形差異對連接體桁架斜腹桿影響大，產(chǎn)生的效應(yīng)大于荷載作用，需要準(zhǔn)確設(shè)定延遲斜腹桿的連接時間。
［關(guān)鍵詞］騰訊濱海大廈； 收縮徐變； B3模型； 連接體桁架； 應(yīng)力比
中圖分類號：TU398-2文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)21-0016-06
Tencent Seafront Tower: shrinkage and creep analysis of vertical members
Sun Ping， Wang Wenyu
（Tongji Architects Co., Ltd., Shenzhen 518000, China）
Abstract:Shrinkage and creep of concrete structure run through the full life cycle of structure, which causes the difference of deformation between vertical members of structure. The secondary internal force effect in super high-rise building is equivalent to the load effect. The revised B3 model was used to analyze the shrinkage and creep of vertical members of Tencent Seafront Tower before floor construction, after floor construction, after joint lifting and during normal use, and the deformation amplitude of each member was obtained. Secondary internal forces caused by deformation differences of vertical members of connected truss floors in high regions were analyzed. The results show that the shrinkage and creep deformation of the member is equivalent to the elastic deformation under load. The difference of creep deformation has great influence on the oblique web members of the connected truss, and the effect is greater than the load effect. It is necessary to set the connection time of the delayed oblique web members accurately.
Keywords:Tencent Seafront Tower; shrinkage and creep; B3 model; connected truss; stress ratio
作者簡介：孫平，高級工程師，一級注冊結(jié)構(gòu)工程師，Email:sunping@tja.com.cn。
