Exploration of Rotation Lowering with Building RC Box-Rib Arch Bridge

Abstract:

Arch rib construction of Zhenzhu Bridge on the road from Wuchuan to Pengshui in Guizhou uses construction technology of vertical casting in the first place, and then vertical rotation, and the total weight of which is 610t. This paper introduces technical points and process of vertical rotation construction, and has made beneficial exploration and summary of such kind of construction technology.OverviewBridge rotation construction has advantages including saving costs for hoisting and erecting frames, reducing risks of frames losing stability when casting arch rib concrete, convenient, flexible, safe, reliable and good integrated construction operation, structural line type and internal forces are easy to adjust and control, small range requirement of construction site, and low impact on surrounding environment. Bridge rotation construction would have a broad application prospect in the practice of bridge construction, especially in Chinas southwest area with wide distribution of deep groove and dangerous gully, such construction method is more advantageous. Therefore, practice and research on such construction technology are very practical and significant.Ordinary vertical rotation construction is to have low casting or arch rib assembling, and then lift upward to reach the designed location. Concrete arch rib construction of Zhenzhu Bridge on the road from Wuchuan to Pengshui in Guizhou uses the technology of negative-angle vertical rotation construction, vertical casting arch rib, and then lowering rotation with weight of 610t. Such construction technology is used in China for the first time, while current vertical rotation of the same type of RC arch rib in China has the maximum weight. Based on emphasis on introducing construction technology characteristics of this bridge, this paper also includes innovation and beneficial exploration on the new construction technology of negative-angle vertical rotation.

• Periodical: Applied Mechanics and Materials (Volume 443)
• Pages: 100-104
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.443.100
• Online since: October 2013
• Authors: Rui Nong Zou, Jie Yang
• Keywords: Exploration, Practice, RC Arch Bridge, Rotation Lowering

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