System for improving carrying capacity of continuous beam bridge girders and bridge girders with same

Abstract

The invention relates to the field of bridge engineering and discloses a system for improving carrying capacity of continuous beam bridge girders. The system comprises at least one pair of arch ribs, a plurality of beams, and a plurality of vertically-arranged hanger rods, wherein two arch ribs of each pair of arch ribs are parallel to each other and arranged at intervals, the arch ribs are arranged along the longitudinal direction of the bridge girder, and the two arch ribs of each pair of arch ribs are symmetrically disposed on both sides of a main bridge girder; the beams are laterally and uniformly arranged along the longitudinal direction of the ribs and disposed on the underside of the main bridge girder, and both ends of the beams stretch out of the main bridge girder and stretching parts are formed; a hanger rob is fixed on each stretching part of each beams, one end of the hanger rod is connected with the stretching part, and the other end of the hanger rod is connected with the arch rib at the same side. The invention further discloses bridge girders with the system for improving carrying capacity of a continuous beam bridge girder. The system for improving carrying capacity of continuous beam bridge girders and bridge girders with same can effectively improve the structural stiffness of continuous beam bridges and improve the carrying capacity of bridge girders.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a system for improving the bearing capacity of a continuous beam bridge and a bridge containing the system for improving the bearing capacity of a continuous beam bridge. Background technique [0002] Prestressed concrete continuous bridges or continuous steel bridges are composed of a plurality of piers arranged at intervals and steel trusses placed on the piers. At the same time, the hole-span bridge has many advantages such as convenient construction, short erection time and low cost. It is widely used in the construction of railway bridges. [0003] However, in the process of using a continuous beam bridge, since the pier is the only point of force, the load-bearing on the bridge will all be transmitted to the pier, resulting in different forces between the main beam part at the pier and the main beam part at the non-pier. In the long run, the main girder will damage the st...

AI Technical Summary

Problems solved by technology

[0003] However, during the use of continuous girder bridges, since the pier is the only point of stress, all the load on the bridge will be transmitted to the pier, resulting in different stresses on the main girder at the pier and the main girder at the non-pier. If things go on like this, the main girder will cause damage to the structure and strength of the entire main girder due to uneven force, resulting in bridge deck concrete cracking, obvious mid-span and lower disturbance, and structural rigidity decline, which will affect the service life of the bridge

Images