a socket-plug type structure of cast-in-situ UHPC material for prefabricating and assembling bridge piers

Abstract

The invention relates to the technical field of bridge construction, in particular to a prefabricated bridge pier with cast-in-situ UHPC material socket-plug structure, comprising a prefabricated bearing cap and a prefabricated bridge pier, wherein the prefabricated bridge pier is installed on the prefabricated bearing cap, and a plurality of the prefabricated bridge piers are installed in a stackmanner; The top surface of the precast bearing cap and the top surface of the precast bridge pier are provided with tenons and grooves, the bottom of the precast bridge pier is provided with tenons and grooves, and the dimensions of the tenons and grooves are adapted to the tenons and grooves; Bridge pier reinforcement is embedded in the precast bridge pier. The invention has the beneficial effects that: through the design of the tenon and the tenon groove, when the precast bearing cap and the precast pier are spliced, dangerous accidents such as overturning and the like are prevented, and the stability of the structure in the construction process is increased; The setting of pier reinforcement and capping reinforcement can bind the pier reinforcement and capping reinforcement after inserting the tenon, so that the whole structure of the pier is more stable during the installation process.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a prefabricated assembled pier of a socket type structure with joints made of cast-in-place UHPC materials. Background technique [0002] When a bridge structure encounters an earthquake, the piers are vulnerable parts. At present, the assembled piers connected by high-strength mortar or structural glue are mostly in the form of plane joints, which is difficult to eliminate the possible shear displacement between segments. Areas with low seismic hazard. On the other hand, plane joints have very high requirements on the construction accuracy of the joint surface. The mechanical properties of materials between high-strength mortar or structural adhesive and precast concrete are quite different, and the durability of the joints is more prominent. At present, the splicing between the prefabricated pier sections of some domestic cross-sea bridges mostly uses ordinary con...

AI Technical Summary

Problems solved by technology

At present, the assembled piers connected by high-strength mortar or structural glue are mostly in the form of plane joints, which is difficult to eliminate the possible shear displacement between segments. Areas with low seismic hazard

On the other hand, plane joints have very high requirements on the construction accuracy of the joint surface. The mechanical properties of materials between high-strength mortar or structural adhesive and precast concrete are quite different, and the durability of the joints is more prominent.

At present, the splicing between the prefabricated pier sections of some domestic cross-sea bridges mostly uses ordinary concrete for full-section cast-in-place. Although the integrity of the pier can be improved, measures must be taken to temporarily support the pier columns of the upper section during construction, which is less efficient. Low, and the concrete quality of the wet joint is generally not as good as that of the precast section, so the spliced ​​section often becomes the weak part of the structure

Moreover, the on-site splicing work of prefabricated piers is more dangerous than that of poured piers

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