Connecting structure of prefabricated pier sections

Abstract

The invention discloses a connecting structure of prefabricated pier sections. The connecting structure comprises a pier body, a corrugated pipe, a first spiral stirrup, a second spiral stirrup, a first longitudinal bar, a third spiral stirrup and a second longitudinal bar. Compared with the prior art, the prefabricated pier sections are connected in a steel bar bonding mode, shear keys similar tomortises and tenons in shape are arranged between the prefabricated pier sections in a matched mode, the pressure borne by the prefabricated pier sections is reduced, and problems of prestress loss and uneven tensile stress caused by prestress do not exist, in addition, under the combined action of the shear keys and the steel bars in the joints, the pier still has good transverse shear strength.

Description

technical field [0001] The invention relates to the technical field of bridge structures, in particular to a connection structure of prefabricated pier segments. Background technique [0002] Since the development of prefabricated assembly technology of bridge structures, it has greatly reduced the interference to traffic and the impact on the environment, and increased the speed of construction. Over the past few decades, prefabrication technology for bridge construction has been widely used around the world. [0003] At present, post-tensioned prestressed segmental piers are the most commonly used prefabricated assembly structures for bridge substructures. Many studies have confirmed that unbonded post-tensioned prefabricated piers can withstand large lateral deformations with small residual displacements, because the prestress can provide reset force to the pier segments. In addition, the prestressed tendons act in the axial direction of the pier, increasing the frictio...

AI Technical Summary

Problems solved by technology

However, there are two deficiencies: first, this concept still uses prestressed tendons to connect each segment, which has the disadvantage of applying prestress

Second, the application of prestress and the axial force borne by the pier in use make the friction force generated between the segments provide greater shear resistance, which will make the designed mortise and tenon joint structure unable to fully exert in actual use shear resistance, while appearing dispensable

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