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International Journal of Steel Structures

Published in:

04-10-2018

Semi-rigidity Connection Model for Unstiffened CHS X-type Joints Subjected Out-of-plane Bending

Authors: Bida Zhao, Chengqing Liu, Zhengxi Yan, Xin Chen, Yangzheng Cai

Published in: International Journal of Steel Structures | Issue 3/2019

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Abstract

Mechanical performance of unstiffened circular hollow section (CHS) multi-planar X-joints subjected two different directions (sagging and hogging) of out-of-plane bending moment (OPBM) was analyzed. A seven-parameter exponential function model, which describing semi-rigidity behavior (moment-rotation curves) of the X-joints subjected sagging and hogging OPBM, was proposed, and then the method to obtain the values of each parameters in the seven- parameter model was also proposed. Based on the results of FE parametric analysis, formulas for parameters in the seven-parameter model were established combined with multiple nonlinear regression analysis. FE and test results were used to verified the seven-parameter model. The results indicated that: the seven-parameter model can well reflect the semi-rigidity behavior of CHS multi-planar X-joints subjected to OPBM.

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Title: Semi-rigidity Connection Model for Unstiffened CHS X-type Joints Subjected Out-of-plane Bending
Authors: Bida Zhao
Chengqing Liu
Zhengxi Yan
Xin Chen
Yangzheng Cai
Publication date: 04-10-2018
Publisher: Korean Society of Steel Construction
Published in: International Journal of Steel Structures / Issue 3/2019
Print ISSN: 1598-2351
Electronic ISSN: 2093-6311
DOI: https://doi.org/10.1007/s13296-018-0168-x

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