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（1 西安建筑科技大學(xué)土木工程學(xué)院， 西安  710055； 2 希格瑪工程造價(jià)咨詢公司， 西安  710055）

［摘要］針對(duì)《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》（JGJ 3—2010）建議的核心筒高寬比限值，通過(guò)對(duì)一系列不同核心筒高寬比的框架-核心筒結(jié)構(gòu)在不同烈度下的彈性和彈塑性分析，研究了各模型在小震、中震、大震作用下的層間位移角、樓層剪力大小及其分配規(guī)律，依據(jù)損傷理論計(jì)算了各模型在不同設(shè)防烈度下結(jié)構(gòu)整體及局部構(gòu)件的損傷，進(jìn)而對(duì)其損傷的程度進(jìn)行了判定。結(jié)果表明，6度（0-05g）區(qū)、7度（0-1g）區(qū)框架-核心筒結(jié)構(gòu)的核心筒高寬比可達(dá)到16；而對(duì)于7度（0-15g）區(qū)、8度（0-2g）區(qū)的框架-核心筒結(jié)構(gòu)，雖然核心筒高寬比的提高能保證“大震不倒”的性能水平，但中震作用下由于大部分連梁、框架梁都能屈服且損傷程度較大，達(dá)不到“中震可修”對(duì)于結(jié)構(gòu)性能和經(jīng)濟(jì)效益的要求，故應(yīng)維持規(guī)范規(guī)定的核心筒高寬比為12的限值。

［關(guān)鍵詞］鋼筋混凝土； 框架-核心筒； 核心筒高寬比； 彈塑性分析； 損傷分布； 性能水平

中圖分類(lèi)號(hào)：TU375文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)13-0038-08

Study on height-width ratio limit of corewall in RC frame-corewall structures

Wang Bin1, Shi Qingxuan1, Wu Qian1,2, He Weifeng1

(1 School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China；2 Xigema Engineering Building Co., Ltd., Xi′an 710055, China)

Abstract:Considering the recommended limit of height-width ratio of corewall in Technical specification for concrete structures of tall buildings (JGJ 3—2010), elastic and elastio-plastic analyses on a series of reinforced concrete frame-corewall structures with different height-width ratios of corewalls were performed under different seismic intensities. The story drift ratio, layer shear force and its distribution regularity of each model were studied under frequent, fortification and rare earthquakes. The damages in the overall structure and local components of each model were calculated under different seismic precautionary intensities based on damage theory, to determine the corresponding damage degree. The result shows that the height-width ratio of corewall of the structures in 6 degree seismic intensity area(design the basic earthquake acceleration 0-05g) and 7 degree seismic intensity area (design the basic earthquake acceleration 0-1g) can be up to 16. While for the structures in 7 degree seismic intensity area (design the basic earthquake acceleration 0-15g) and 8 degree seismic intensity area (design the basic earthquake acceleration 0-2g), although the improvement of the height-width ratio of corewall can guarantee the performance level of “no collapsing under the rare earthquake”, the general performance requirement in structural performance and economy of “repairable under fortification earthquake” can not be met because of the yield and large damage severity of most coupling beams and frame beams, so the limit of height-width ratio should be maintained 12 as regulated in the code.

Keywords:reinforced concrete; frame-core wall; height-width ratio of corewall; elastio-plastic analysis; damage distribution; performance level

*國(guó)家自然科學(xué)基金資助項(xiàng)目（51178380，51478382）。

作者簡(jiǎn)介：王斌，博士研究生，Email：shannxiwangbin@126.com。