钢管混凝土端柱-钢斜撑混凝土剪力墙受力性能试验研究  

Experimental study on mechanical performance of steel concealed bracing concert composite shear walls with concrete-filled steel tube end columns

作　　者：王鑫鑫 于东晖 张雄迪 陈硕晖[3] 伍敏 王龙 韩巍 WANG Xinxin;YU Donghui;ZHANG Xiongdi;CHEN Shuohui;WU Min;WANG Long;HAN Wei(Beijing Institute of Architectural Design Co.,Ltd,Beijing 100045,China;Beijing North Star Convention and Exhibition Investment Corporation,Beijing 100101,China;Beijing Construction Engineering Group,Beijing 100055,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;China International Engineering Consulting Corporation,Beijing 100048,China)

机构地区：[1]北京市建筑设计研究院股份有限公司,北京100045 [2]北京北辰会展投资有限公司,北京100101 [3]北京建工集团有限责任公司,北京100055 [4]北京交通大学土木工程学院,北京100044 [5]中国国际工程咨询有限公司,北京100048

出　　处：《建筑结构学报》2025年第3期63-74,共12页Journal of Building Structures

基　　金：北京北辰会展投资有限公司科技创新基金项目(2021-07-01),BIAD内部科研项目(2021-049)。

摘　　要：为研究国家会议中心二期项目中采用的组合受力墙受力性能,提出适用于工程实际的构件设计方法,验证项目结构安全,针对项目中采用的高含钢率钢管混凝土端柱-钢斜撑混凝土剪力墙构件,以组合墙高含钢率(15.36%)、端柱形式(型钢混凝土、钢管混凝土)及斜撑布置形式(单向、交叉)为主要参数,设计并制作5组15个缩尺试件,进行拟静力试验研究。试验结果表明:通过提高含钢率及墙内布置钢斜撑,可延缓墙身裂缝发展,避免水平贯通裂缝过早出现,提高组合墙体承载能力及刚度;与型钢混凝土端柱相比,采用钢管混凝土端柱,组合墙刚度及承载能力无显著差异;单向钢斜撑布置形式对构件承载能力、刚度及破坏模式都有一定影响,骨架曲线呈现拉压不对称性,钢管混凝土端柱承载能力并未得到充分发挥;墙身开洞对组合墙承载力、刚度、破坏模式均有一定影响,洞边补强钢暗柱及钢管混凝土端柱呈现连肢墙受力模式,承载能力和延性均稍有降低。基于拟静力试验研究及混凝土结构拉压杆模型理论基础,提出了基于组合墙体裂缝分布的拉压杆模型,用以分析组合墙受力机理及水平承载力评估。对标既有组合结构设计标准,提出了此类高含钢率钢管混凝土端柱-带钢斜撑混凝土剪力墙斜截面受剪承载力简化设计方法,可用以指导工程设计。In order to study the mechanical performance of the new composite shear wall used in the project of China National Convention CenterⅡ,to propose a component design method suitable for engineering practice,and to verify the structural safety,a scale quasi-static test was carried out on the high steel content steel concealed bracing concert composite shear walls with concrete-filled steel tube end columns which were used in the project.Taking the high steel content(15.36%)of composite shear wall,the form of end column(steel reinforced concrete,concrete-filled column)and the layout form of steel bracing(one-way,cross)as the main parameters,five groups of 15 specimens were made.The test results show that:By increasing the steel content and arranging steel bracing in the wall,the development of wall cracks can be delayed,and the horizontal through cracks can be prevented from appearing too early,improving the bearing capacity and stiffness of the specimens.Compared with conventional steel reinforced concrete end columns,there is no significant difference in the stiffness and bearing capacity of the composite wall with concrete-filled steel tube end columns.The arrangement of one-way steel bracing has a certain impact on the bearing capacity,stiffness and failure mode of members.The skeleton curve shows tension compression asymmetry,and the bearing capacity of and the concrete-filled steel tube end column is not fully utilized.The opening of the wall has a certain impact on the bearing capacity,stiffness,and failure mode of the composite wall.Based on quasi-static experimental research and the theoretical foundation of STM(strut-and-tie model),a STM method based on specimen crack distribution was proposed to analyze the stress mechanism of composite walls and estimate the horizontal bearing capacity.Based on the existing design standards for composite structures,a simplified design method for the shear bearing capacity of steel concealed bracing concert composite shear walls with concrete-filled steel tube end column

关 键 词：设置钢斜撑混凝土剪力墙 钢管混凝土端柱 高含钢率 拟静力试验 受力性能 拉压杆模型 受剪承载力 

分 类 号：TU398[建筑科学—结构工程]