（西安建筑科技大学土木工程学院， 西安 710055）

［摘要］为掌握斜交网格筒与混凝土核心筒协同工作的受力性能，采用PERFORM-3D软件对10个不同结构特性的高层斜交网格-RC核心筒结构模型进行了静力弹塑性分析。总结了此类结构受力和塑性发展过程、变形能力及其影响因素，并从内外筒抗侧刚度的发展过程以及剪力分配规律等方面阐述了这类结构体系内外筒协同工作时的受力性能，给出了斜交网格外筒层剪力沿高度分布规律；明确了斜交网格筒的屈服路径以及斜柱传力过程。研究表明：此类结构体系关键构件的屈服顺序为：连梁、斜柱、剪力墙墙肢；结构抗侧刚度发展过程可分为两大阶段，剪力分配过程分为三大阶段；结构体系的整体变形模式呈弯剪型且空间协同工作性能较好，剪力滞后效应较小。

［关键词］斜交网格-RC核心筒结构； 静力弹塑性分析； 协同工作性能； 剪力重分布； 抗震性能

中图分类号：TU352-1文献标识码：A文章编号：1002-848X(2019)03-0001-08

Study on cooperative working performance of high-rise oblique grid and RC corewall structure

Shi Qingxuan, Wu Chaofeng, Wang Feng, Wang Peng

(School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)

Abstract:Based on the PERFORM-3D  software, static elastic-plastic analysis was conducted on 10 oblique grid and RC corewall structure models with different structural characteristics to understand the cooperative working performance between oblique grid and RC corewall structures. The structural plastic development process, load-deformation ability and deformation capacity  as well as related influential factors were summarized. The cooperative working performance between oblique grid and RC corewall structures was explained by analyzing the development process of lateral stiffness and the shear force distribution of the outer oblique grid structure and inner RC corewall structure. The distribution of shear force of outer oblique grid tube along the height was given. The yield path and the force transmission process of outer oblique grid tube were determined. The results show that the yield orders of key components in this structural system are coupling beams, inclined columns and shear walls. The development process of lateral stiffness can be divided into two stages and the shear force distribution process can be divided into three stages. The overall deformation mode of the structural system is bending-shear type, and the spatial cooperative working performance is good, and the shear lag effect is small.

Keywords:oblique grid and RC corewall structure; static elastic-plastic analysis; cooperative working performance; shear force redistribution; seismic behavior

 *国家自然科学基金资助项目（51478382）。

作者简介：史庆轩，博士，教授，博士生导师，Email:qingxuanshi@sina.com。