An asymmetric pier and small radius curved bridge

Abstract

The invention discloses an asymmetric bridge pier which comprises a bridge pier body. The bridge pier body comprises a pier top and a pier bottom, transverse bridge direction width of the bridge pierbody is gradually reduced from the pier top to the pier bottom, a transverse bridge direction central line of the pier bottom is positioned between that of the pier top and the transverse bridge direction outer-side edge of the pier top; the edges on two sides of the transverse bridge direction of the pier bottom are positioned between the transverse bridge direction inner-side edge and the outer-side edge of the pier top. The invention further discloses a small-radius curved bridge. Facade of the bridge pier body is in asymmetric arrangement; when the asymmetric bridge pier is in use, supports are arranged on the inner and outer sides of the pier top along the transverse bridge direction of the bridge pier body, then a box beam is set up, in this way, transverse bending moment when dead load of an upper structure of the box beam is transmitted to a lower structure can be eliminated by adjusting distances of the supports on the inner and outer sides relative to the transverse bridge direction central line of the pier bottom.

Description

technical field [0001] The invention relates to the field of bridge structure design, in particular to an asymmetric bridge pier and a small-radius curved bridge. Background technique [0002] Curved girder bridges are an important part of highway interchanges, urban interchanges, urban viaducts and flyover bridges, and are also an important branch of bridge structures. Compared with conventional linear girder bridges, the remarkable mechanical characteristics of curved girder bridges are that due to the influence of curvature, the arc lengths of the inner and outer girders (webs) are different, and the torsional effect is very significant (especially in the case of small radii), which affects the structural force. It is very large and is an important part of controlling the design of curved girder bridges. The torque of the upper structure is finally transmitted to the lower structure of the bridge through the torsional support of the bridge. Due to the large value of this...

AI Technical Summary

Problems solved by technology

At present, the pier design for small-radius curved girders still adopts a symmetrical pier structure, which is the same form as a straight bridge. The common ones are column piers or slab piers, and their structural dimensions and reinforcement are compared with those of the same span. Linear girder bridges have higher requirements, greater internal force, and poor economic effect

Images