The track smoothness of high-speed railroads is severely limited to ensure train performance. concrete continuous girder bridge deformed influence the decks and caused by creep bulge. There a need research impact beam on dynamical response operation safety. This paper used Midas software calculate long-term deformation large-span prestressed bridges under shrinkage. train-bridge coupled system ...

In the construction of large-tonnage box girder, load girder transport is generally greater than operating in highway industry; therefore, it a crucial task to carry out accurate simulation and optimization on bearing girder. For this purpose, refined modeling method 40 m/1270t studied first paper, followed by detailed stress analysis considering impact coefficient vehicles most unfavorable con...

In this study, fire resistance tests were performed on a conventional slim floor beam and a prestressed composite beam with corrugated webs, which is suitable for a long-span structure with a reduction in story height by utilizing the prestress and accordion effect. In the fire test program, the ISO 834 standard fire curve was adopted. Key test variables were the effect of prestress, shape of c...

Several of the texts on prestressed concrete illustrate the magnitude of the effect of prestressing on the concrete by using a fishing pole as an example. As I recall the fishing pole described, it consists of a length of concrete one inch square in section with a single wire pretensioned through and along its central axis. Not until I was to witness the behavior of the massive precast, postten...

The mechanism of pile-soil reaction in frozen ground is not clear at present, but it obvious that the reduction dead weight will be beneficial to seismic resistance bridges. In view limited bridge engineering practice high risk permafrost regions, paper addressed structural performance superstructure and its effect on piles these special regions. Four superstructures with different weights were...