Integral Lifting of a Three-Span Continuous Beam Bridge
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 4
Abstract
A three-span-continuous girder bridge has to be integrally lifted by 3 m to meet increased navigation capacity. This paper mainly introduces the lifting system mechanism, construction process, and bridge jack-up monitoring. To determine the control threshold value during the construction process and to ensure the safety of successive lifting, a three-dimensional finite-element model is established to analyze the strain and stress distribution characteristics of the bridge. With guidance from the numerical analyses, the three-continuous-span girder bridge is lifted successfully. The design and construction methods adopted in this project provide a useful reference for similar engineering projects.
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Acknowledgments
The authors would like to express their sincere thanks to the engineers and project managers of the Zhejiang Port Management Bureau, who generously provided information on the lifting system and construction scheme. Additional thanks are also extended to the design engineers of CCCC Second Harbor Consultants Co, Ltd., who provided the design drawings of the supporting structures and limiting devices. This research is supported by National Natural Science Foundation of China (Grant Nos. 51278449 and 51238009).
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© 2014 American Society of Civil Engineers.
History
Received: Jul 31, 2013
Accepted: Feb 17, 2014
Published online: Feb 19, 2014
Discussion open until: Feb 3, 2015
Published in print: Aug 1, 2015
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