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

被引：4
|
作者：
Zhao, Bida [1 ]
Liu, Chengqing [2 ]
Yan, Zhengxi [2 ]
Chen, Xin [2 ]
Cai, Yangzheng [1 ]
机构：
[1] Zhejiang Univ Technol, Coll Bldg Engn, Hangzhou 310014, Zhejiang, Peoples R China
[2] Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF STEEL STRUCTURES | 2019年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
CHS X-joint; Semi-rigidity connection model; Complete out-of-plane moment-rotation curve; Sagging and hogging bending moment; Multiple nonlinear regression; BRACE TUBULAR JOINTS; PARAMETRIC EQUATIONS; FLEXIBILITY MATRICES; STIFFNESS;
D O I：
10.1007/s13296-018-0168-x
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
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 parametricanalysis, 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.
引用
收藏
页码：834 / 849
页数：16
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