About the author:

1. Hangzhou Xiaoshan Environmental Investment and Construction Group Co., Ltd., Hangzhou, Zhejiang 311202,China; 2. Hangzhou Xiaoshan Urban Infrastructure Construction Co., Ltd., Hangzhou, Zhejiang 311201, China;3. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China

Abstract:

Some piers of Hangzhou Tongcheng Avenue Expressway Bridge adopt composite structuralpiers with lower cast⁃in⁃place concrete columns and upper steel cap beams. The steel skeleton at theconnection between concrete columns and steel cap beams has high accuracy requirements. Combinedwith engineering practice, the total station positioning method is determined. Based on the consolidationconstruction steps, the precision control measures of the total station positioning method are proposed,and the precision control of the fabrication, transportation and hoisting of the steel bar skeleton is carriedout, including precision control in the fabrication process, anti⁃deformation control in the hoistingprocess, installation and fixation of the column steel bar skeleton, precision control of the column pouringand opening of the steel cap beam, temporary support and support installation and installation of the steelcap beam. The engineering application shows that this measure effectively ensures the accuracy ofconsolidation construction and improves the construction quality and construction speed.