（1 西安建筑科技大学土木工程学院， 西安  710055； 2 希格玛工程造价咨询公司， 西安  710055）

［摘要］针对《高层建筑混凝土结构技术规程》（JGJ 3—2010）建议的核心筒高宽比限值，通过对一系列不同核心筒高宽比的框架-核心筒结构在不同烈度下的弹性和弹塑性分析，研究了各模型在小震、中震、大震作用下的层间位移角、楼层剪力大小及其分配规律，依据损伤理论计算了各模型在不同设防烈度下结构整体及局部构件的损伤，进而对其损伤的程度进行了判定。结果表明，6度（0-05g）区、7度（0-1g）区框架-核心筒结构的核心筒高宽比可达到16；而对于7度（0-15g）区、8度（0-2g）区的框架-核心筒结构，虽然核心筒高宽比的提高能保证“大震不倒”的性能水平，但中震作用下由于大部分连梁、框架梁都能屈服且损伤程度较大，达不到“中震可修”对于结构性能和经济效益的要求，故应维持规范规定的核心筒高宽比为12的限值。

［关键词］钢筋混凝土； 框架-核心筒； 核心筒高宽比； 弹塑性分析； 损伤分布； 性能水平

中图分类号：TU375文献标识码：A文章编号：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

*国家自然科学基金资助项目（51178380，51478382）。

作者简介：王斌，博士研究生，Email：shannxiwangbin@126.com。