Review on the Development Status of Orthotropic Steel Deck's Manufacturing Techniques

Hua Zhang; Qinghua Zhang; Shenyou Song; Liming Li; Jiashun Ruan

doi:10.13206/j.gjgs21121901

Volume 37 Issue 4

Jul. 2022

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Hua Zhang, Qinghua Zhang, Shenyou Song, Liming Li, Jiashun Ruan. Review on the Development Status of Orthotropic Steel Deck's Manufacturing Techniques[J]. STEEL CONSTRUCTION(Chinese & English), 2022, 37(4): 1-13. doi: 10.13206/j.gjgs21121901

Citation:

Hua Zhang, Qinghua Zhang, Shenyou Song, Liming Li, Jiashun Ruan. Review on the Development Status of Orthotropic Steel Deck's Manufacturing Techniques[J]. STEEL CONSTRUCTION(Chinese & English), 2022, 37(4): 1-13. doi: 10.13206/j.gjgs21121901

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Review on the Development Status of Orthotropic Steel Deck's Manufacturing Techniques

doi: 10.13206/j.gjgs21121901

1. Wuchuan Heavy Engineering Co., Ltd., Wuhan 430415, China;
2. Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China;
3. Administration of Shenzhen-Zhongshan Passage, Zhongshan 528400, China

Received Date: 2021-12-19
Available Online: 2022-07-23

Abstract

Abstract

Orthotropic steel decks(OSDs) have obvious advantages and are the preferred deck structure for long-span bridges. However, the fatigue problem of the OSDs is prominent. In recent years, driven by the construction of national major engineering projects, the manufacturing concept and mode of OSDs in China have made continuous progress, the manufacturing technological equipment and process level have been greatly improved, providing a whole-process, multi-dimensional and professional solution to improve the fatigue performance of OSDs. Computer numerical control laser cutting machine is introduced to realize the high quality machining of transverse rib tooth plate in cutting parts. In the welding of U-rib unit, the special welding machines for U-rib internal and external welds are adopted based on submerged arc welding technology to realize the high quality and efficient welding of U-rib double-sided welds. A welding robot based on off-line programming and three-direction sensing technology is used to weld stereo units of bridge decks. Ultrasonic phased array detection technique is used to achieve accurate identification and detection of internal defects in U-rib welds.
Recent advances in OSDs manufacturing technology include the following:1) From the manual welding-based manufacturing mode to the mechanization and automation-based manufacturing mode, various types of automated manufacturing equipment have been developed, which have greatly improved the welding quality and production efficiency. The intelligent welding technology represented by machine vision technology has been used in the manufacture of OSDs. 2) Successfully developed the U-rib internal welding technology of OSDs and developed the U-rib double-sided welding technology on this basis, which fundamentally solved the problem of fatigue cracking at the root of the traditional single-sided weld of the U-rib, which greatly improves the fatigue resistance of key welds of OSDs, and strongly supports the further development of OSDs. 3) In order to solve the problem of internal quality inspection of U-rib welds, the ultrasonic phased array inspection technology was introduced into the non-destructive testing of U-rib welds of OSDs, which played an important role in the quality control of U-rib welds. 4) The stereo unit robot welding technology of OSDs was developed, which realized the automatic welding of the U-rib and the transverse rib connection weld of OSDs, and improved the fatigue resistance of the weld at this part. Through the research and development, promotion and application of key technologies, the manufacturing quality and fatigue performance of OSDs have been effectively improved, and the new generation technology system of OSDs manufacturing that integrates intelligent manufacturing technology, efficient welding technology and advanced detection technology has been established. In this paper, the development of OSDs manufacturing technology is summarized and commented on the aspects of manufacturing concept and mode, U-rib welding technology development and stereo unit robot welding technology of OSDs.
- OSDs,
- automated manufacturing technology,
- high performance structure,
- fatigue performance,
- robot welding

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References(42)

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