Research on Synchronous Erection Construction Technology of Beams on Each Layer of Three-layer Bridge with Common Pier for Main Line and Ramp
Based on the SG03 contract section in the southern section engineering of Guangzhou New Baiyun International Airport Second Expressway,this paper studies and optimizes the construction scheme of the substructure and beam erection of the three-layer bridge whose upper main line,middle ramp B and lower ramp have common piers,and puts forward the key construction technologies,including the hoisting steel rope and lifting sling of the bridge erecting machine,the binding position of the beam lifting point,and the conversion of the beam transport vehicle.It focuses on how to realize the synchronous erection of the beams on each layer of the three-layer bridge with common piers,so as to effectively avoid the problem of mutual restriction between the substructure and the beam erection construction with conventional construction method.
bridge engineeringthree-layer bridge with common pierbridge erecting machinesynchronous erection
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