線性黏滯阻尼器在某超高層建筑中的應(yīng)用
侯勝利1，汪洋2，江民2
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(1 奧雅納工程顧問，廣州 510620；2 奧雅納工程顧問，深圳 518048)［摘要］以大連某綜合發(fā)展項目中超高層建筑T塔樓為工程背景，將速度型黏滯阻尼器設(shè)置于核心筒墻體懸挑出的伸臂和外框柱之間，利用兩者之間的豎向變形差耗散振動能量。介紹了阻尼系數(shù)的確定方法和三種伸臂形式及伸臂端部和外框柱與阻尼器的連接節(jié)點大樣。基于風(fēng)洞實驗室的風(fēng)力時程數(shù)據(jù)對結(jié)構(gòu)的加速度和層間位移角響應(yīng)進行詳細(xì)分析。結(jié)果表明，塔樓采用16個黏滯阻尼器之后，有效減小了10年回歸期風(fēng)荷載作用下結(jié)構(gòu)頂部的加速度，其頂部舒適度可改善20%左右，成功達到預(yù)期效果。［關(guān)鍵詞］黏滯阻尼器; 消能減振; 伸臂桁架; 環(huán)桁架; 阻尼系數(shù)中圖分類號：TU973 文獻標(biāo)識碼：A 文章編號：1002-848X(2014)24-0070-05Application of linear viscous dampers in a super high-rise buildingHou Shengli1, Wang Yang2, Kang Man2(1 Arup, Guangzhou 510620, China; 2 Arup, Shenzhen 518048, China)Abstract: Taking a super high-rise building T-tower of a comprehensive development project in Dalian as the engineering background, velocity-dependent viscous dampers were installed between frame columns and outriggers cantilevered from core walls to dissipate vibration energy by vertical deformation difference between columns and outriggers. Damping coefficient determination method was introduced as well as three outrigger forms and the connecting nodes among outrigger ends, frame columns and the dampers. Based on the wind time-history data from wind tunnel laboratory, the acceleration response and inter-layer displacement angle response of the structure were analyzed in detail. The results show that with usage of sixteen velocity-dependent viscous dampers in the tower building, the acceleration of the structure top is effectively reduced under the wind load of 10 years return period and the comfort degree of the building top can be improved by 20%, which successfully achieves the desired effect.Keywords: viscous damper; energy dissipation; outrigger truss; belt truss; damping coefficient作者簡介：侯勝利，碩士，副總工程師，一級注冊結(jié)構(gòu)工程師，Email：sheng-li.hou@arup.com。參考文獻［1］JGJ 3—2010 高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京:中國建筑工業(yè)出版社,2011.［2］WILLFORD M, SMITH R, SCOTT D, et al. Viscous dampers come of age ［J］. Structure Magazine, 2008（6）:15-18.［3］方志, 王飛, 張志田，等. 粘滯阻尼器參數(shù)對大跨度橋梁抗震性能影響研究［J］. 公路交通科技，2009，26(2):73-78.［4］薛艷濤, 石樹立, 李博. 消能減振阻尼器的結(jié)構(gòu)設(shè)計［J］.建筑科學(xué)， 2003，19(3):19-21.［5］ROB J SMITH，MICHAEL R WILLFORD. The damped outrigger concept for tall buildings ［J］. The Structural Design of Tall and Special Buildings，2007, 16(4):501-517.［6］陳永祁, 曹鐵柱, 馬良喆. 液體粘滯阻尼器在超高層結(jié)構(gòu)上抗震抗風(fēng)效果和經(jīng)濟分析［J］.土木工程學(xué)報，2012，45(3):1-8.
