884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(美國(guó)SOM建筑結(jié)構(gòu)事務(wù)所, 芝加哥 60604)

［摘要］廣州廣商中心塔樓的冠頂高度為375m，塔樓按偏置筒體布置，采用鋼管混凝土巨柱外框、巨型鋼斜撐、帶狀鋼桁架和偏心支撐鋼框架的復(fù)雜鋼結(jié)構(gòu)體系，建成后將成為中國(guó)最高的鋼結(jié)構(gòu)超高層。塔樓結(jié)構(gòu)體系的主要特點(diǎn)包括：中部4根柱在第7層傾斜轉(zhuǎn)換到地面層、周邊普通柱由兩道帶狀桁架轉(zhuǎn)換、外圍抗彎框架和巨撐不在同一平面、樓板不連續(xù)等。結(jié)構(gòu)中存在多項(xiàng)超限或者抗震不利的特征，設(shè)計(jì)過(guò)程中采用了基于性能的抗震設(shè)計(jì)思想。通過(guò)提高轉(zhuǎn)換部位構(gòu)件的性能目標(biāo)、多輪風(fēng)洞測(cè)試、優(yōu)化節(jié)點(diǎn)設(shè)計(jì)、非線性施工模擬等措施，使整個(gè)結(jié)構(gòu)體系高效而優(yōu)化。另外，風(fēng)致舒適度、施工可行性等方面的優(yōu)化具有明顯的綜合經(jīng)濟(jì)效益，成功降低了結(jié)構(gòu)總造價(jià)。

［關(guān)鍵詞］超高層結(jié)構(gòu)； 鋼結(jié)構(gòu)； 巨柱； 巨撐； 偏心支撐； 轉(zhuǎn)換； 偏置筒體

中圖分類號(hào)：TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)13-0013-09

Steel structural design of complex offset core super high-rise building of Guangzhou Chamber of Commerce

Chen Jin, Chang Kevin, Dane Rankin, Hailey Arterburn, Max Cooper, Wan Tianshu, Ding Han, Liu Wandi

(Skidmore, Owings & Merrill LLP, Chicago 60604, USA)

Abstract:The crown top of Guangzhou Chamber of Commerce tower is 375m high, and the tower adopts offset core layout. The tower structural system is one complex steel system consisting of concret filled tube (CFT) mega columns,mega steel diagonals, steel belt trusses and eccentically braced steel frames. When completed, the building will be the tallest steel super high-rise building in China. The major features of this tower′s strucural system includes: four middle columns sloping transfered at level 7 down to ground floor, the perimeter regular columns tranfered by two belt trusses, the mega diagonals detached from the perimeter frame, slab discontinuity and etc. Considering many over-limit irregularity items and disadvantage features for seismic design, the performance base seismic design was performed at the design procedure. The whole structurarl system is highly efficient and optimized by enhancing the seismic performance targets for the members at tranfer zone, adopting multiple rounds of wind tunnel testing, optimizeing critical connection details and considering the nonlinear construction sequence analysis. Meamwhile, optimizing the wind induced acceleration and constructability has great economic efficiency and successfully reduce the structural cost.

Keywords:super high-rise structure; steel structure; mega column; mega diagonal; eccentrically braced frame; transfer; offset core

作者簡(jiǎn)介：陳晉，碩士，美國(guó)注冊(cè)結(jié)構(gòu)工程師，注冊(cè)職業(yè)工程師，Email：jin.chen@som.com。