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

Zhao Bida; Liu Chengqing; Yan Zhengxi; Chen Xin; Cai Yangzheng

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

机译：未加筋的CHS X型接头平面外弯曲的半刚性连接模型

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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.

机译：分析了平面外弯矩（OPBM）的两个不同方向（下垂和弯折）下未加筋的圆形空心截面（CHS）多平面X接头的力学性能。提出了七参数指数函数模型，该模型描述了承受下垂和下垂OPBM的X接头的半刚性行为（力矩-旋转曲线），然后求出七参数中每个参数值的方法。模型也被提出。基于有限元参数分析的结果，结合多元非线性回归分析，建立了七参数模型的参数公式。有限元和测试结果被用来验证七参数模型。结果表明：七参数模型可以很好地反映OPBM作用下CHS多平面X接头的半刚性行为。

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来源
《International journal of steel structures》 |2019年第3期|834-849|共16页
作者
Zhao Bida; Liu Chengqing; Yan Zhengxi; Chen Xin; Cai Yangzheng;
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作者单位

Zhejiang Univ Technol, Coll Bldg Engn, Hangzhou 310014, Zhejiang, Peoples R China;

Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China;

Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China;

Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China;

Zhejiang Univ Technol, Coll Bldg Engn, Hangzhou 310014, Zhejiang, Peoples R China;

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正文语种 eng
中图分类
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;

机译：CHS X型接头;半刚性连接模型;完整的面外弯矩-旋转曲线;弯矩和弯矩弯矩;多重非线性回归;

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1. Semi-rigidity Connection Model for Unstiffened CHS X-type Joints Subjected Out-of-plane Bending [J] . Zhao Bida, Liu Chengqing, Yan Zhengxi, International journal of steel structures . 2019,第3期

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

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