- 摘 要
-
(1 深圳市建筑設(shè)計研究總院有限公司， 深圳 518031；2 東南大學(xué)建筑設(shè)計研究院有限公司， 南京 210096）
［摘要］南京江北市民中心工程項(xiàng)目采用框架支撐角筒懸掛復(fù)雜鋼結(jié)構(gòu)體系，結(jié)構(gòu)設(shè)計時通過在中庭和懸挑弓形區(qū)域設(shè)置懸掛桁架，以減小樓面跨度，將樓面荷載合理地傳到角筒，達(dá)到滿足建筑對大空間的要求； 在角筒內(nèi)分段設(shè)置普通鋼支撐和屈曲約束支撐，以提高角筒承載能力，并在結(jié)構(gòu)上形成多道抗震防線； 考慮實(shí)際的施工次序，進(jìn)行施工模擬分析，計算懸掛桁架真實(shí)的內(nèi)力和豎向位移。采用多種軟件對結(jié)構(gòu)進(jìn)行小震、中震和大震下的計算分析。結(jié)果表明，主體結(jié)構(gòu)滿足C級抗震性能目標(biāo)要求； 屈曲約束支撐在大震作用下具有良好的耗能能力，保證了角筒豎向構(gòu)件的安全； 懸掛桁架的撓度雖然滿足相關(guān)規(guī)范的限值要求，但其跨中豎向位移已非常之大，設(shè)計和施工均需重視。
［關(guān)鍵詞］懸掛結(jié)構(gòu)； 減震結(jié)構(gòu)； 施工模擬； 復(fù)雜鋼結(jié)構(gòu)
中圖分類號：TU391文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)17-0051-05
Design of complex steel structure for a frame support angle tube suspension
ZHONG Xianfeng1, HAN Baofeng1, LIANG Shahe2, GU Weijun1
(1 Shenzhen General Institute of Architectural Design and Research Co., Ltd., Shenzhen 518031, China;2 Architects and Engineers Co., Ltd. of Southeast University， Nanjing 210096, China）
Abstract:A complex steel structure for a frame support angle tube suspension system was adopted in Nanjing Jiangbei New District Civil Center project. In the design of the structure, suspension trusses were installed in the atrium and the cantilever arch area to reduce the span of the floor and transfer the floor load to the angle tube reasonably, so as to meet the requirements of large space of the building. In order to improve the bearing capacity of the angle tube and form multi-seismic defense line in the structure, ordinary steel support and buckling restrained support were arranged in sections in the angle tube. Considering the actual construction order, the construction simulation analysis was carried out to calculate the real internal force and vertical displacement of the suspension truss. Many kinds of software were used to calculate and analyze the structure under small, medium and large earthquakes. The results show that the main structure meets the requirement of grade C seismic performance. The buckling restrained brace has good energy dissipation capacity under the action of large earthquake, which ensures the safety of the vertical component of the angle tube. Although the deflection of the suspension truss meets the limit requirements of relevant codes, its mid-span vertical displacement is very large, so the structural design and construction should pay attention.
Keywords:suspension structure； shock absorption structure； construction simulation； complex steel structure
作者簡介：鐘先鋒，碩士，一級注冊結(jié)構(gòu)工程師，Email：510600975@qq.com。
- 下載地址
-
