Step-by-Step Incremental Launching Technology and Control for Long-Span Steel Box Girder Grillage Systems

CHU Genfa; WANG Jingfeng; XUAN Fei; SHEN Qihan; XIE Hao; CHEN Jingwei

doi:10.3724/j.gyjzG24123104

Volume 56 Issue 8

Aug. 2026

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CHU Genfa, WANG Jingfeng, XUAN Fei, SHEN Qihan, XIE Hao, CHEN Jingwei. Step-by-Step Incremental Launching Technology and Control for Long-Span Steel Box Girder Grillage Systems[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(8): 140-149. doi: 10.3724/j.gyjzG24123104

Citation:

CHU Genfa, WANG Jingfeng, XUAN Fei, SHEN Qihan, XIE Hao, CHEN Jingwei. Step-by-Step Incremental Launching Technology and Control for Long-Span Steel Box Girder Grillage Systems[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(8): 140-149. doi: 10.3724/j.gyjzG24123104

Citation:

CHU Genfa, WANG Jingfeng, XUAN Fei, SHEN Qihan, XIE Hao, CHEN Jingwei. Step-by-Step Incremental Launching Technology and Control for Long-Span Steel Box Girder Grillage Systems[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(8): 140-149. doi: 10.3724/j.gyjzG24123104

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Step-by-Step Incremental Launching Technology and Control for Long-Span Steel Box Girder Grillage Systems

doi: 10.3724/j.gyjzG24123104

1. Anhui Provincial Communications Construction Co., Ltd., Hefei 230041, China;
2. College of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China

Received Date: 2024-12-31
Available Online: 2026-11-06

Abstract

Abstract

Based on the steel bridge project on Guangde Road in Hefei， this study investigated the step-by-step incremental launching technology for long-span steel box girder grillage systems. Considering the site constraints and river navigation requirements， a systematic study of the incremental launching scheme was conducted， establishing standardized design principles for the launching scheme， guide beams， sliding system， power system， control system， support system， and protection system. A finite element model was developed to analyze the launching process， identifying the most unfavorable loading conditions and the corresponding structural stresses at each launching step. The monitoring scheme and key control points were determined based on the numerical results. Full-process monitoring was performed during construction， and the measured data verified the accuracy of the numerical model.
- long-span arch bridge,
- steel box girder bridge,
- grillage system,
- step-by-step incremental launching,
- launching system,
- numerical simulation,
- construction monitoring

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References(15)

References

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