Electronics, Communication & Automation Technology

Analysis on the Axial Load Behavior of a New Type of Transferring Joint with Concrete Filled Steel Tubular Inclined Columns

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  • 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. Guangzhou Jishi Construction Group Co. , Ltd. , Guangzhou 510115, Guangdong, China; 3. Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, Guangdong, China
黄少腾(1989-),男,博士生,主要从事钢-混凝土组合结构研究。E-mail:shaoteng_huang@163.com

Received date: 2019-05-06

  Revised date: 2019-09-26

  Online published: 2020-03-01

Supported by

Supported by the National Natural Science Foundation of China (51408230)

Abstract

A new type of transferring joint with concrete filled steel tubular inclined columns was proposed in this study. The joint is composed of core concrete, longitudinal and horizontal steel plates, external steel plates and built-in profiled steel. The monotonic loading test of a specimen with geometric ratio of 1:6 was carried out. Then the failure mode of the joint zone was studied through numerical simulation, and the parameter analysis on the thickness of the steel plates in the joint zone was conducted. The experimental results show that the failure of the specimen occurs in the inclined columns, so it can meet the design concept of “strong joint and weak component”. The numerical simulation results further reveal the force transfer mechanism of the joint zone. The calculation results show that the failure mode of the joint zone is that the steel plates basically reach yield and the concrete at the bottom of the joint zone reaches the ultimate compressive strain. The ultimate bearing capacity and yielding load of the joint zone are 2. 10 times and 1. 19 times of those of the numerical model in which the inclined columns fail at first, respectively. The thickness variation of the external steel plates, which can transfer axial internal force and confine the concrete, has the greatest influence on the ultimate bearing capacity of the joint zone.

Cite this article

HUANG Shaoteng, HUANG Yansheng, MO Tingwei, et al . Analysis on the Axial Load Behavior of a New Type of Transferring Joint with Concrete Filled Steel Tubular Inclined Columns[J]. Journal of South China University of Technology(Natural Science), 2020 , 48(3) : 44 -54 . DOI: 10.12141/j.issn.1000-565X.190235

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