Research on the Application of Installation Technology for Prefabricated Beam Bridge Erecting Machine under Short Abutment Back Working Condition
The installation of prefabricated beams on the upper structure of the simply supported and then continuous bridge is generally carried out by assembling the bridge erecting machine on the section with long subgrade behind the abutment back,then counterweighting the prefabricated beam body through the hole,and then installing the prefabricated beam.The upper structure of Zhongzhu Flood Discharge Canal Bridge is a double T-beam of(5×23)m with short distance subgrade on both sides of the bridge abutment back.The subgrade is adjacent to the deep foundation pits of the intersecting roads on both sides.The site length for the installation of the bridge upper structure double T-beam bridge erecting machine and the beam feeding is insufficient,making it impossible to use conventional installation process for abutment back with long subgrade section for construction.This paper analyzes the installation difficulties of short abutment back working condition,and introduces an installation method of double T-beam bridge erecting machine under the working condition of short abutment back distance,in order to provide reference for other similar projects.
short abutment backbridge erecting machinedouble T-beam
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