Prestressing force concrete series rob arch bridge inverted sequence dismounting method

Abstract

The invention discloses an inverted sequence demolition method of a prestressing concrete tied arc bridge, which comprises adopting demolition of bridge deck tied affiliated projects to reduce self weight; erecting tied girders and arc rib supports, releasing prestressing in the tied girders by steps and phases; demolishing prior suspension rods tension in inverted sequence, cutting and demolishing the support between the arc ribs by steps and phases, removing the arc rib racks, demolishing and hanging off the tied girders and inner beams from the middle to both sides by steps and phases, demolishing end beams and other temporary equipment. The method has strong scientific and safety properties.

Description

technical field

[0001] The invention belongs to a bridge dismantling method, in particular to a reverse sequence dismantling method of a prestressed concrete tied arch bridge. Background technique

[0002] Composite system arch bridge is to form a whole with the traffic system structure and the main arch according to different construction methods, so as to bear the load together, and give full play to the structural characteristics and combination effect of beam bending and arch compression. It can be divided into thrust composite system arch bridge and Arch bridge without thrust combined system.

[0003] The main load-bearing components of the composite arch bridge without thrust are arch ribs, tie beams (stiffened longitudinal beams), beams, and suspenders. The tie beams and beams form a plane frame, and the plane frame is connected up and down by suspenders and arch ribs to form a statically determinate structure on the outside. , The interior is a whole of statically i...

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