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（廣州大學(xué)土木工程學(xué)院， 廣州 510006）

［摘要］巨型型鋼混凝土（SRC）框架-核心筒結(jié)構(gòu)是由巨型型鋼混凝土框架、鋼筋混凝土核心筒和伸臂桁架組成的一種具有多道抗震防線的超高層結(jié)構(gòu)體系。以某超高層建筑為工程背景，建立有限元分析模型，通過(guò)反應(yīng)譜分析、動(dòng)力彈塑性時(shí)程分析和靜力彈塑性分析，研究這種結(jié)構(gòu)體系在地震作用下的變形、基底剪力及屈服破壞機(jī)制。分析結(jié)果表明：結(jié)構(gòu)下部變形較大, 反映出結(jié)構(gòu)下部破壞比上部嚴(yán)重和核心筒破壞比框架嚴(yán)重這兩種破壞趨勢(shì)；結(jié)構(gòu)呈現(xiàn)“連梁→墻肢→框架”的屈服機(jī)制，符合多道抗震防線的概念設(shè)計(jì)；結(jié)構(gòu)的加強(qiáng)層、裙塔樓交接處以及結(jié)構(gòu)底部容易首先破壞，設(shè)計(jì)中應(yīng)當(dāng)注意這些薄弱環(huán)節(jié)。

［關(guān)鍵詞］巨型框架-核心筒結(jié)構(gòu); 型鋼混凝土; 抗震性能; 屈服機(jī)制

中圖分類號(hào)：TU398.7      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2014)02-0025-07

Seismic performance and damage patterns of super high-rise mega SRC frame-core wall structure

Chen Lin, Yang Hang, Wu Shanhu, Zhou Yun

 (Department of Civil Engineering, Guangzhou University, Guangzhou 510006, China)

Abstract: Mega steel reinforced concrete (SRC) frame-core wall structure is a type of structural system for super high-rise buildings, consisting of mega SRC frame, reinforced concrete (RC) core wall and outrigger trusses. Finite element analysis model was constructed according to a super high-rise building. Response spectrum analysis, time history analysis and Pushover analysis were carried out to study the deformation, base shear forces and yield failure mechanism of this  type of structural system when subjected to earthquake. The results show that the maximum deformation occurred in lower story which indicate the lower part of the structure was destroyed more seriously and the core wall was destroyed more seriously than frame. The structure presented yield sequence as coupling wall-beam to coupling wall-column to frame, corresponding to the seismic concept design of multi-line. The weak parts of the structure such as strengthened story, bottom story and intersection members between podium building and main building, should be paid much attention to during the design.

Keywords: mega frame-core wall structure; steel reinforced concrete; seismic performance; yield mechanism

*廣東省自然科學(xué)基金團(tuán)隊(duì)項(xiàng)目(8351009101000001),廣州市珠江科技新星專項(xiàng)（2011J2200023）。

作者簡(jiǎn)介：陳麟，博士，副教授，Email: zyfychen@163.com。

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