- 摘 要
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(1中國建筑西南設(shè)計(jì)研究院有限公司， 成都 610042；2 隔而固（青島）振動(dòng)控制有限公司， 青島 266100)
［摘要］青島機(jī)場塔臺(tái)采用了混凝土核心筒+菱形網(wǎng)格鋼外網(wǎng)筒的結(jié)構(gòu)形式。在設(shè)計(jì)中利用犀牛Grasshopper參數(shù)化建模，考察了鋼外網(wǎng)筒劃分密度對結(jié)構(gòu)受力性能的影響。分析表明，桿件尺寸不變的前提下，網(wǎng)格劃分造成的桿件與水平面夾角越大，結(jié)構(gòu)層間位移角越??； 但角度過大后，則層間位移角的減小不太明顯，同時(shí)會(huì)帶來用鋼量和施工難度的加大。綜合考慮建筑美觀和結(jié)構(gòu)受力性能等因素后，采取了鋼外網(wǎng)筒水平向劃分22等份，豎向劃分4等份，并在鋼外網(wǎng)筒底部部分桿件內(nèi)灌注混凝土的設(shè)計(jì)方案。在結(jié)構(gòu)頂部設(shè)置TMD，模擬并分析了考慮TMD作用后結(jié)構(gòu)的風(fēng)致振動(dòng)響應(yīng)，以控制結(jié)構(gòu)位移為目的進(jìn)行了TMD的參數(shù)設(shè)計(jì)及優(yōu)化，有限元計(jì)算結(jié)果顯示TMD對該結(jié)構(gòu)的風(fēng)致振動(dòng)響應(yīng)控制效果良好。鋼外網(wǎng)筒環(huán)梁與外網(wǎng)之間脫開一定距離，二者不在一個(gè)曲面內(nèi)，采用將環(huán)梁翼緣擴(kuò)大，與外網(wǎng)焊接連接的節(jié)點(diǎn)形式，既保證了受力需求，也滿足了建筑效果。
［關(guān)鍵詞］青島機(jī)場； 塔臺(tái)； 網(wǎng)格結(jié)構(gòu)； 鋼外網(wǎng)筒； 參數(shù)化建模； TMD； 振動(dòng)控制
中圖分類號(hào)：TU248-6文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)19-0085-08
Structural design of Qingdao Airport control tower
CHEN Zhiqiang1, LUO Ganlin1, LI Jianqun1, QIU Lingling2, LUO Fuping1
(1 China Southwest Architectural Design and Research Institute Co.， Ltd., Chengdu 610042, China;2 GERB(Qingdao) Vibration Control Co., Ltd., Qingdao 266100, China)
Abstract:Qingdao Airport control tower adopts the structural form of concrete corewall+outer steel grid tube with diamond-shaped grid. By employing parametric modeling with Rhino Grasshopper, the influence of the partition density of outer steel grid tube on the mechanical properties of the structure was investigated. The analysis shows that for different mesh generation,with the cross section of the grid members fixed, the larger the angle between steel members and the horizontal plane is, the smaller the inter story displacement angle is; however, if the angle is too large, the decrease of inter story displacement angle is not obvious, which will increase the steel consumption and construction difficulty. After considering the factors of architectural beauty and structural mechanical performance, the design scheme of dividing the steel outer grid tube into 22 equal parts horizontally and 4 equal parts vertically was adopted, and the concrete was poured into the bottom part of the steel outer grid tube. TMD was set on the top of the structure to simulate and analyze the wind-induced vibration response of the structure after considering the effect of TMD. The parameters of TMD were designed and optimized for the purpose of controlling the structural displacement. The results of finite element calculation show that the control effect of TMD on the wind-induced vibration response of the structure is good. There was a certain distance between the steel outer grid tube ring beam and the outer grid, and the two were not in the same curved surface. The joint form of expanding the ring beam flange and welding with the outer grid was adopted, which not only ensured the mechanical demand, but also met the architectural effect.
Keywords:Qingdao Airport; control tower; grid structure; outer steel grid tube; parametric modeling; tuned mass damper; vibration control
作者簡介：陳志強(qiáng)，碩士，教授級(jí)高級(jí)工程師，一級(jí)注冊結(jié)構(gòu)工程師，Email：1226639079@qq.com； 通信作者：羅甘霖，碩士，工程師，Email:tjuganlin@163.com。
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