cantilever erection
1.In the segment precasting, cantilever erection and bridge deck construction during the PAKSEY bridge construction, the precise surveying control results in the minimum error between the bridge deck line and the designed line.
2.With reference to the cantilever erection of the continuous steel box girder of Zhuanxing Road Overhead Bridge crossing Shenfengjin Expressway in Shanghai, this paper mainly describes the application of PLC-controlled hydraulic sync jack-up system to the balanced cantilever erection of the box girder, closure construction of the girder at midspan, and the operation, control key points and corresponding technical requirements for application of the system.
3.This paper presents the design method for a long span concrete continuous girder bridge with precast segments, mixed arrangement of internal and external tendons, and to be constructed with cantilever erection by overhead launching gantry, and also discusses several issues of the type of the bridge in need of special considerations in aspect of design calculations and constructional design.
4.The design and construction of reinforced concrete and prestressed concrete girder bridges with precast balancing cantilever or segmental erection methods are currently finding wide application in China. In this paper,the principle of precasting concrete segmental girders of the approach spans of Hau Hoi Wan Sea-Crossing Bridge,Hongkong with short-line match method is presented for reference to the construction of similar bridge works.
5.Because the balancing cantilever segmental construction method has been widely applied in the building of long-span continuous rigid frame bridge, it is necessary to execute a construction control effectively to ensure the structural safety, successful closure of a span and the ideal alignment of superstructure during and after erection of the bridge.
