Research on the Fatigue Performance of Novel Rib-to-Diaphragm Joints

YUAN Qinghua; ZHENG Chunxiao; XIE Hao; GAO Runkun

doi:10.13204/j.gyjzG20060803

Volume 53 Issue 5

May 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(5): 118-123

YUAN Qinghua, ZHENG Chunxiao, XIE Hao, GAO Runkun. Research on the Fatigue Performance of Novel Rib-to-Diaphragm Joints[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 118-123. doi: 10.13204/j.gyjzG20060803

Citation:

YUAN Qinghua, ZHENG Chunxiao, XIE Hao, GAO Runkun. Research on the Fatigue Performance of Novel Rib-to-Diaphragm Joints[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 118-123. doi: 10.13204/j.gyjzG20060803

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Research on the Fatigue Performance of Novel Rib-to-Diaphragm Joints

doi: 10.13204/j.gyjzG20060803

1. Yichang Housing and Urban-Rural Development Bureau, Yichang 443000, China;
2. CCCC Second Harbour Engineering Co., Ltd., Wuhan 430040, China;
3. China Construction Third Engineering Bureau Urban Investment Operation Co., Ltd., Yichang 443000, China;
4. Yichang City Bridge Construction Investment Co., Ltd., Yichang 443000, China

Received Date: 2020-06-08

Abstract

Abstract

In order to improve the fatigue performance of rib-to-diaphragm joint, two types of novel rib-to-diaphragm joints in OSD were proposed. For the novel welded joints, the floor of rib and diaphragm are connected by welding to enhance the cooperative working performance. The rib-to-diaphragm joints were taken as the research object, and its fatigue performance were studied systematically. The results indicate that the predominant crack pattern of the conventional rib-to-diaphragm joint is cracking initiated from the rib toe that propagated through the web plane of rib, and the stress state of cracking pattern Ⅰ is mainly in the tensile state. The predominant crack pattern of the two novel welded joints are mainly in the compressive state, and the novel welded joint 1 is the most reasonable one among the three types of novel welded joints. The predominant crack pattern of the novel welded joint 1 is cracking initiated from the rib toe that propagated through the floor plane of rib. Compared with the conventional rib-to-diaphragm joint, the stress range of the novel welded joint 1 is reduced by 12.4%, and the fatigue performance is effectively improved.
- orthotropic steel bridge decks,
- novel rib-to-diaphragm joints,
- finite element method,
- fatigue performance,
- predominant crack pattern

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