STUDY OF CONSTRUCTION TECHNOLOGY OF ARC CONCRETE FILLED STEEL TUBULAR COLUMN FOR NINGBO FORTUNE CENTER PROJECT

Considering the technical problems such as butt joint installation and concrete compactness assurance etc in the construction of arc concrete filled steel tubular columns for Ningbo Fortune Center project，the cover mould technology，local structural changing measures for the columns and adjustment of concrete pouring method were used respectively，combined with the model test，numerical analysis and ultrasonic test method，the successfulness of this set of techniques for the project was verified，which was also applied in the subsequent similar projects．