Pre-tensioning prestressed concrete short rib T-beam bridge and construction method thereof

Abstract

The invention discloses a pre-tensioning prestressed concrete short rib T-beam bridge and a construction method thereof. Each pre-tensioning prestressed concrete short rib T-beam is composed of a flange plate, a web and a horizontal partition plate. Common construction reinforcements are arranged in the flange plates, the webs and the horizontal partition plates, and linear prestressed ribs are arranged on the portions close to the bottom edges of the webs; concrete cast-in-situ seams are arranged among the adjacent short rib T-beams, a reinforced concrete bridge deck cast-in-situ layer is laid on the top faces of the short rib T-beams, and all the short rib T-beams are connected into an entirety through the cast-in-situ seams and the bridge deck cast-in-situ layer; the pre-tensioning prestressed concrete short rib T-beam bridge is prefabricated and constructed on an assembly-type steel mold pedestal. The pre-tensioning prestressed concrete short rib T-beam bridge is suitable for an upper bridge structure in a span range of 10-20 cm and comprises a simple support and a simple support rotation continuous bridge structure, the oblique crossing angle of the bridge is within 0-45 degrees, and the assembly-type steel mold pedestal can be recycled. By means of the bridge, the construction design is simple, the construction operation is convenient, the construction quality is improved, the production cost is lowered, and the durability of the bridge is improved.

Description

technical field [0001] The invention belongs to the technical field of prestressed concrete bridges, in particular to a pretensioned prestressed concrete low-rib T-beam bridge and a construction method thereof. Background technique [0002] Assembled hollow slab structures are often used in the superstructure of medium and small-span bridges in my country. The remarkable advantage of hollow slabs is that the structure height is small, which is very meaningful for reducing the height of the roadbed and saving engineering costs. Prefabricated hollow slab girder bridges are generally composed of multiple hollow slabs, which are connected horizontally through hinge joints and bridge deck pavement to form a whole. The hinged joints are easily broken and the stress of the single plate occurs, which leads to the damage of the hinged joints between the bridge decks and even the tension area of ​​the bottom plate. During the operation process, some diseases of varying degrees appeare...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of prestressed concrete hollow slab girder bridges, conventional prefabricated T-girder bridges with high height, post-tensioning construction quality and durability control problems, etc., the present invention provides a pre-tensioned prestressed concrete low-rib T-girder bridge And its construction method, its structure is simple, construction is convenient, can improve construction quality and bridge durability, can be applied to 10~20m span bridge

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