- 摘 要
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（廣州容柏生建筑結(jié)構(gòu)設(shè)計事務(wù)所, 廣州 510170）
［摘要］針對中山利和國際貿(mào)易中心核心筒高寬比和風(fēng)荷載偏大的設(shè)計難點，選用了抗風(fēng)剛度更大的帶加強層的鋼筋混凝土框架-核心筒結(jié)構(gòu)體系。通過綜合比選，結(jié)合外框柱尺寸較大的優(yōu)勢，采用了新型的伸臂梁+腰環(huán)梁剛度加強方案，避免了常規(guī)方案引起的剛度急劇突變和薄弱層等問題。通過概念和構(gòu)造設(shè)計、計算分析、性能設(shè)計等多種手段，確保結(jié)構(gòu)可滿足強柱弱梁、強剪弱彎等延性抗震設(shè)計要求。
［關(guān)鍵詞］鋼筋混凝土框架-核心筒； 伸臂梁+腰環(huán)梁； 強柱弱梁； 強剪弱彎
中圖分類號：TU375文獻標識碼：A文章編號：1002-848X(2020)04-0089-05
Structural design of Zhongshan Lihe International Trade Center with strengthened stories of outrigger beams
Cao Chunhua， Liao Yun， Wu Jinmei
(RBS Architectural Engineering Design Associates, Guangzhou 510170, China)
Abstract:In view of the design difficulties of the height width ratio and the wind load of the corewall of Zhongshan Lihe International Trade Center, the reinforced concrete frame-corewall structure system with strengthened stories was adopted due to its greater wind resistance stiffness. Through comprehensive comparison and selection, a new rigidity strengthening scheme of outrigger beam and belt beam was adopted combined with the advantage of large size of outer frame column, which avoided the problems of abrupt change of rigidity and weak story caused by conventional scheme. Through concept and structure design, calculation analysis, performance design and other means, the structure could meet the ductility seismic design requirements of strong column weak beam and strong shear and weak bending.
Keywords:reinforced concrete frame-corewall structure with strengthened stories; outrigger beam and belt beam; strong column and weak beam; strong shear and weak bending
作者簡介：曹春華，博士，高級工程師，Email：caochunhua@gzrbs.com。
