Analysis of shear lag effect of railway double-track whole-span simply-supported box girder;

6-m simple-supported box girders of the Yangtze River Bridge at Tianxingzhou are cast in place with two sets of self-propelled forming frames made in Norway.

This paper gives an introduction to the applicable scope, main design parameters, design features, structural form, construction and erection requirements, structure constitution and so on of simple-supported box girder on passenger dedicated line in combination with the design situation of span-girder commonly adopted on Chinese passenger dedicated line.

Post-tensioned prefabricated concrete simple-supported box girders have been widely used in China including general railway bridges, passenger transportation railways and express railways; however, the pre-tensioned ones are mainly used in T-shaped girders.

From mode designing and making,installment and dismantlement of mode,reinforced concrete making and installment,concrete pouring and maintaining,and prestress tensile,it introduces the constructing skill of prestress simple support box beam,so as to offer reference for familiar projects.

Exploration of setup schemes of prefabricated plant for simple box girders of high speed railways;

Study of construction time for erecting simple box girders on high speed railways;

Techno-economic comparison and construction organization design of simple box girders on passenger dedicated lines;

With the practical example of Nanshanhe huge bridge of Zhu liu railway double line project,authors introduce the structure and function of stress beam bridge construction machine,and the construction method of whole section erection and combination of 64m simple supported box beam with this machine.

Full span box girders are new typed girders turning up in recent years.