Numerical simulation and test of large overhead launching gantry;

Based on the construction example,this paper introduces the structure and function of a simple overhead launching gantry,and illuminates the technical process for prestress concrete box girder using this overhead launching gantry.

The construction scheme of segment precasting and full span girder erection by 3 200-t overhead launching gantry was adopted for the 64-m span simply-supported concrete box girders of Baima River Bridge on Wenzhou-Fuzhou Railway.

Finite element analysis of DXZ32/900 bridge fabrication machine

On dismantling steps of DXZ 32m/900t bridge fabrication machine and inspection methods

In balanced cantilever erection of bridge beam,the technology of bearing system transformation is really ripe,while assembling continuous curved beam by bridge fabrication machine is a totally new method.

The lengthways moving course of the bridge building machine is studied in the paper,and the spots on the leading beam to be tested is fixed according to the actual structure and the analysis of the stress state.

In this article, authors state some techniques adopted in construction of a 56 meters long simple support high pier box beam bridge with the segment assembly method such as insertion of pre-manufactured beam members, assembly of the bridge building machine, and control of curve of the box beam and so on.

The general structural design and flow process of the SPZ1300/48 bridging machine is discussed in this paper, with both the FEM analysis method for the girder s linearity diversification in the stretching process during the construction process and the principles for initial inverted arch setting described.

The application of movable frame bridge machine in construction of cast-in-situ continuous box beam;