Experimental Study on Seismic Performance of SRUHSC⁃RC Frame Exterior Joints with Cyclic Loads  

作　　者：Wei Liu Jinqing Jia Jian Su 

机构地区：[1]Institute of Ocean and Civil Engineering,Dalian Ocean University,Dalian 116023,Liaoning,China [2]State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China

出　　处：《Journal of Harbin Institute of Technology(New Series)》2023年第3期32-44,共13页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.51178078);the 863 Project of the Ministry of Science and Technology of the People's Republic of China(Grant No.2007AA11Z133);the Natural Science Foundation of Science Department of Liaoning Province(Grant No.2020⁃BS⁃215);the Scientific Research Program of Education Department of Liaoning Province(Grant No.LJKZ0721).

摘　　要：SRUHSC⁃RC(Steel Reinforced Ultra High Strength Concrete⁃Reinforced Concrete)structures are used extensively in super high⁃rise buildings.However,it has obvious brittleness.Wrapping structural steel inside is a good way to alleviate the brittleness problem.The purpose of this study is to investigate seismic behavior of SRUHSC⁃RC exterior joints on the basis of experimental results of eleven specimens under the reversed cyclic loading.The relationship among the force⁃displacement curve,ductility,energy dissipation property,strength degradation,stiffness degradation,the strains of steel bone and stirrup at the core area of the joint were analyzed based on the test results.It is shown that axial compression ratio and stirrup volumetric ratio have significant effects on the shear behavior of SRUHSC⁃RC frame exterior joints.The general requirement on the axial⁃load level and the amount of confinement stirrup for the joints in the design is suggested.

关 键 词：exterior joints STEEL ultra⁃high strength DUCTILITY shear resistance 

分 类 号：TU317[建筑科学—结构工程]