Key Construction Technology of Retard-bonded Circumferential Prestress in Cable Tower Anchorage Zone
Retard-bonded prestressing combines the advantages of unbonded prestressing and bonded prestressing.It has the advantages of simple construction technology,good durability and easy quality control.It is more and more widely used in engineering construction.Based on the circumferential prestress construction of the cable tower anchorage zone of the bridge across Xiangyang North Marshalling Station,this paper expounds the difficulties in the construction process,and introduces in detail the process of making,installing,tensioning and sealing anchor of the retard-bonded prestress through the comparative analysis of the schemes.At present,the retard-bonded prestress has been successfully applied in the construction of the main tower of the bridge across Xiangyang North Marshalling Station,which provides a reference for the subsequent circumferential prestress construction of similar cable-stayed bridges.
NETL
NSTL
万方数据
