Because of the high precision and stability intelligent system, tensioning technology can completely eliminate interference human factors effectively ensure construction quality prestressed tensioning. In this paper, characteristics, principle, process flow points for attention in precast box girder are introduced.

Abstract This study employs the finite element-based CSiBridge v.20.0.0 software to examine response of a single-cell prestressed box-girder bridge subjected Indian loading conditions. The analyses is carried out on simply supported considering specifications Road Congress (IRC) 6:2017, IRC 18:2000 and 21:2000. An existing model skewed validated with published one. A convergence conducted for d...

The Softened Truss Model Theory applied to a prestressed concrete multiple cell box is developed in this study. In this theory, the concrete torsional problem is solved by combining equilibrium conditions, compatibility conditions and constitutive laws of materials. Up to now the theory has been applied only to the case of pure torsion with single cell section. An algorithm is presented to deal...

Taking a prestressed concrete box girder as the research object, aiming at problem that bridge durability is reduced due to appearance of temperature cracks in girder, this paper adopted different types heat insulation materials, and theoretically analyzed structural field under high difference low environment from aspects whether source was set inside which provides reference for technical app...