Innovative Launch of Long-Span Arch Bridge Across Waterway Using Special Hydraulic Crawler
Publication: Practice Periodical on Structural Design and Construction
Volume 25, Issue 3
Abstract
The construction of a 140-m spanned arch bridge adopted an innovative launching method in which the steel superstructure with a total weight of 2,120 t was entirely assembled and erected on the south side, and then launched northward to span the watercourse. A special hydraulic crawler machinery system was used to drive the launch. Temporary structural and geotechnical facilities, including four launching tracks and their supporting foundations and structures, were designed and implemented. Many investigations were conducted to study the structural and/or geotechnical behaviors related to the launch process and the temporary facilities. In situ geotechnical load tests were carried out for the design of the supporting foundations. The elevations of the superstructure and the temporary facilities were monitored to ensure their vertical alignment. The surface strain in the steel elements of the superstructure and in the launching rails was measured in real time. The results of these investigations are presented, and the lessons learned are discussed.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request. For instance, the available data include the data for plotting the curves in Figs. 8, 9(b), 10(b), 11(d), 12, 14, and 15(b).
Acknowledgments
This research was funded by the Ministry of Science and Technology of the Taiwan Government and Hung Shun Engineering Co., Ltd., Miaoli County, Taiwan, through Grant MOST 105-2622-E-260-001-CC3. The authors also gratefully acknowledge the assistance of J.-W. Ke, former graduate student at National Chi Nan University, Taiwan, and Y.-T. Chen and Y.-L. Chen, former graduate students at Cheng Shiu University.
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Published In
Practice Periodical on Structural Design and Construction
Volume 25 • Issue 3 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Sep 27, 2019
Accepted: Jan 31, 2020
Published online: Apr 30, 2020
Published in print: Aug 1, 2020
Discussion open until: Sep 30, 2020
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