A new orthotropic steel deck system incorporating two novel structural details

Da, Le-tian; Zhang, Qinghua; Yuan, Daoyun; Ma, Yan; Cui, Chuang

doi:10.1016/j.jcsr.2022.107633

Cited by 13 publications

(3 citation statements)

References 35 publications

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“…A denser model meshing is applied in the concerned areas to improve the calculation accuracy. The meshing size and nominal stress extraction of the finite element models are consistent with reference [23], and they can avoid a change in the nominal stress caused by the meshing size. The extraction of the structural stress is consistent with that in reference [12].…”

Section: Assessment Of Rib-to-deck Welded Jointsmentioning

confidence: 71%

“…With the process of automated welding technology, China has developed an automated U-rib internal welding technology with independent intellectual property rights and proposed a double-sided welding method for rib-to-deck welded joints. This technology has now been widely used in such major construction projects as the Zhuankou Yangtze River Bridge, the Zhaoqing Xijiang Bridge, and the Shenzhen-Zhongshan Link [23][24][25][26]. Da et al compared the difference in stress response between single-sided rib-to-deck welded joints and double-sided rib-to-deck welded joints under vehicle loads through finite element analysis.…”

Section: Introductionmentioning

confidence: 99%

“…Da et al compared the difference in stress response between single-sided rib-to-deck welded joints and double-sided rib-to-deck welded joints under vehicle loads through finite element analysis. The results showed that the single-sided rib-to-deck welded joints had greater stress concentration at the welding roots [23]. Cui et al studied the fatigue properties of double-sided rib-to-deck welded joints with small-sized specimens and showed that they had high fatigue strength [24].…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Tests and Failure Mechanism of Rib-to-Deck Welded Joints in Steel Bridge

Fan¹,

Wang³

et al. 2023

Sustainability

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The fatigue cracks of rib-to-deck welded joints in an orthotropic steel deck are one of the critical conundrums that restrict the sustainable development of steel bridges. Double-sided welded joints were achieved by introducing internal welding technology to overcome the initial “crack-like” manufacturing defects at the welding roots of single-sided welded joints. Through the observation of the macro-section of the welded joint, the differences between single-sided welding, partial-penetration welding, and full-penetration welding in rib-to-deck welded joints are compared. Relying on the Shenzhen–Zhongshan link, the fatigue failure and mechanism of single-sided rib-to-deck welded joints are clarified by the nominal stress and structural stress methods, and those of double-sided welded joints were determined through fatigue tests. The fatigue strength of rib-to-deck welded joints is higher than the FAT90 of Chinese standard and the FAT C joints of American standard. The fatigue strength of double-sided rib-to-deck welded joints is significantly higher than that of single-sided welded joints. The fatigue strength of rib-to-deck welded joints is within a ± 2σ range of main S-N curves by the structural stress method. It is suggested to adopt the double-sided welded joints in practice, and to ensure that the penetration rate is beyond 80%. The trial data are limited, and further tests are needed to confirm the results.

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Section: Assessment Of Rib-to-deck Welded Jointsmentioning

confidence: 71%