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

［摘要］杭州之門項(xiàng)目的主體結(jié)構(gòu)為兩棟基本對(duì)稱布置的建筑高度為302m的高層塔樓,采用鋼筋混凝土框架-核心筒結(jié)構(gòu)體系。兩棟塔樓底部之間為跨度約60m的拱形鋼橋，大跨度懸垂網(wǎng)格鋼結(jié)構(gòu)橫跨于兩棟塔樓之間，位于塔樓21層以下及鋼橋之上。重點(diǎn)介紹了懸垂鋼結(jié)構(gòu)屋頂及側(cè)墻系統(tǒng)的結(jié)構(gòu)理念、屋頂找型、節(jié)點(diǎn)細(xì)化、大跨度屋頂鋼網(wǎng)格的施工順序、網(wǎng)格變形對(duì)玻璃面板的影響。另外，對(duì)于柔性鋼網(wǎng)格屋頂?shù)娘L(fēng)洞測(cè)試、兩棟塔樓變形對(duì)懸垂屋頂?shù)挠绊?、懸垂屋頂及?cè)墻的側(cè)向約束系統(tǒng)、網(wǎng)格節(jié)點(diǎn)有限元分析也進(jìn)行了系統(tǒng)介紹。該三維懸垂網(wǎng)格鋼結(jié)構(gòu)及側(cè)墻系統(tǒng)屬于世界首創(chuàng)，對(duì)今后的類似項(xiàng)目有較為重要的參考價(jià)值。

［關(guān)鍵詞］超高層結(jié)構(gòu)； 大跨度屋蓋； 鋼結(jié)構(gòu)； 懸垂結(jié)構(gòu)

中圖分類號(hào)：TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)21-0034-09

Design of long-span suspended grid steel structure of Hangzhou Gate project 

Chen Jin, Toby Mitchell, Max Cooper,  Ding Han, Dane Rankin, William Baker

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

Abstract:The main structures of Hangzhou Gate project include two basically symmetrically arranged high-rise towers with the architectural height of 302m, which adopts the reinforced concrete frame-core tube structure system. Between the bottom of the two towers, there is a steel arch bridge with the span of about 60m. The long-span suspended grid steel structure spans between the towers and is located below the level 21 of the two towers and above the steel bridge. Structural concept of the suspended steel roof and side wall structural system, roof form-finding, grid connection node refinement, construction sequence of long-span roof steel grid, and influence of grid deformation on glass panels were mainly introduced. In addition, the wind tunnel test of flexible steel grid roof, the influence of deformation of two towers on the suspended roof, the lateral restraint system of the suspended roof and the side wall, and the finite element analysis of grid nodes were also comprehensively introduced. The three-dimensional suspended grid steel structure and side wall system are the first in the world, and have important reference value for similar projects in the future.

Keywords:super tall structure; long-span roof; steel structure; suspended structure

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。