UHPC stiffening prestressed concrete box girder bridge structure and construction process thereof

• Main Authors: CHEN KAIQUN, LIU MENGLIN, CHEN XIN, YANG HONGQUAN, MAO LIMIN, OUYANG PING, HE TINGQUAN, YANG LIMING, LUO WEIRAN, LIAO CHENFENG
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2021
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention belongs to the field of bridge engineering, and relates to a UHPC stiffening prestressed concrete box girder bridge structure which comprises a prestressed concrete box girder and UHPC stiffening ribs arranged in the top area of a pier. The prestressed concrete box girder is of a box-shaped structure composed of a top plate, a bottom plate and webs, the height of the whole box-shapedstructure is equal, and the outer contour of the box-shaped structure is kept consistent. The UHPC stiffening rib is of a plate-type structure with the same thickness, and the vertical face of the UHPC stiffening rib is in a symmetrical trapezoid shape with the wide upper portion and the narrow lower portion. The UHCP stiffening ribs are arranged under a web of the prestressed concrete box girder. The UHPC stiffening ribs are transversely provided with fulcrum transverse partition plates at the top of the pier, and a plurality of structural transverse partition plates are arranged on the twosides of each fulcrum tran