Analysis and Experiment on the Welding Temperature Field of Multi-Layer and Multi-Pass for RHS–RHS Y-Connections

IF 3.1 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Buildings Pub Date : 2024-01-08 DOI:10.3390/buildings14010157

Zhaoru Yan, Feihong Zheng, Jinsan Ju

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Abstract

The temperature measuring instrument was utilized to monitor the welding temperature field at designated points along steel rectangular hollow sections (RHSs) during welding. A total of 32 temperature monitoring points were established on the four surfaces of the RHS branch. Additionally, the welding process was simulated using finite element software to calculate the temperature distribution. The calculated temperature results were then compared with the experimental results obtained from the temperature measuring instrument. The relative errors between the numerical simulation and the experimental temperature results remained within 10%, indicating a reasonable agreement between the two. Once the temperature field was determined, it was used as an input load to calculate the welding residual stress. The longitudinal and transverse residual stresses were analyzed for two paths on the four surfaces of the RHS-to-RHS Y-shaped connection branch. By analyzing the residual stresses, it is possible to evaluate the structural integrity and performance of the welded RHS connection. The analysis process in this paper is crucial for ensuring the safety and reliability of tubular steel structure projects.

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RHS-RHS Y 型连接多层多道焊接温度场分析与实验

温度测量仪用于监测焊接过程中矩形空心型钢（RHS）指定点的焊接温度场。在 RHS 分支的四个表面上共设置了 32 个温度监测点。此外，还使用有限元软件模拟焊接过程，计算温度分布。然后将计算得出的温度结果与温度测量仪器得出的实验结果进行比较。数值模拟结果与实验温度结果之间的相对误差保持在 10%以内，表明两者之间存在合理的一致性。温度场确定后，将其作为计算焊接残余应力的输入载荷。分析了 RHS 对 RHS Y 型连接分支四个表面上两条路径的纵向和横向残余应力。通过分析残余应力，可以评估 RHS 焊接连接的结构完整性和性能。本文的分析过程对于确保管状钢结构项目的安全性和可靠性至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Buildings Multiple-

CiteScore

3.40

自引率

26.30%

发文量

1883

审稿时长

11 weeks

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