CN213951919U - Self-sinking anchorage device for connecting assembled bridge piers - Google Patents

Abstract

The utility model discloses a self-sinking anchorage device for connecting an assembly type bridge pier, one end of a prestressed steel strand of the self-sinking anchorage device passes through a preformed hole on an anchoring base plate and locks the end part of the prestressed steel strand through an extrusion spring clamp of an extrusion sleeve to form an anchoring end; the spiral reinforcement is sleeved on the outer side of the prestressed steel strand, the restraint ring is positioned at the lower end of the sleeve and sleeved on the upper part of the prestressed steel strand to form a bundle, the steel strand upwards penetrates through the sleeve, and the sleeve is coaxially and correspondingly communicated with the embedded steel pipe in the prefabricated pier body; self-leveling concrete anchoring prestressed steel strand anchoring ends are poured into the anchor pits, grooves are reserved on two side walls of each anchor pit at intervals from top to bottom, the prestressed steel strands upwards penetrate through the embedded steel pipes in the prefabricated pier bodies to the tops of the prefabricated pier bodies, one side wall of the lower portion of each prefabricated pier body is provided with a grouting hole, and the grouting holes are communicated with the embedded steel pipes. The utility model discloses can anchor the prestressing force stiff end effectively, guarantee each section of pier and reliably connect.

Description

Self-sinking anchorage device for connecting assembled bridge piers

Technical Field

The utility model relates to a from heavy formula ground tackle device, specifically speaking relate to an assembled pier is connected with heavy formula ground tackle device certainly belongs to bridge and culvert engineering technical field.

Background

The bridge prefabrication and assembly technology is a bridge structure design and construction technology which is used for prefabricating bridge components on the basis of factory production and realizing factory prefabrication and field assembly of components such as pile foundations, bearing platforms, piers, beam bodies and the like. Compared with the traditional cast-in-place construction mode, the bridge engineering prefabrication and assembly technology has the advantages of standardized component production, rapid and convenient field installation, energy conservation and environmental protection in construction and the like, can reduce the influence on environment and road traffic, ensures safe and reliable quality, saves the construction period, and improves the engineering quality and the civilized construction level. If the project has a certain scale, the cost of the prefabrication and assembly construction can be fully amortized, and the social cost can be effectively reduced after large-scale popularization. The assembly of the prefabricated sections of the pier in the bridge prefabrication and assembly technology recommends the adoption of a single-end tensioned prestressed steel strand connection structure. In the design of the connecting structure, the prestressed anchoring end is designed as a key point.

Disclosure of Invention

An object of the utility model is to provide an assembled pier is connected with sinking formula ground tackle device certainly can anchor the prestressing force stiff end effectively, guarantees that prestressing force steel strand wires single-ended stretch-draw provides effectual prestressing force for prefabricated bent cap, prefabricated pier shaft and cast-in-place basis, guarantees each festival section of pier and reliably connects.

The utility model discloses a realize above-mentioned purpose, the technical solution who adopts is: a self-sinking anchorage device for connecting an assembled pier comprises a pre-buried steel pipe, a grouting hole, a sleeve, a restraining ring, a groove, an anchor recess, a prestressed steel strand, a spiral rib, an anchoring base plate and an extrusion sleeve extrusion spring, wherein a plurality of preformed holes are uniformly distributed on the anchoring base plate; the spiral reinforcement is sleeved on the outer side of the prestressed steel strand, the sleeve is positioned in the center of the upper part of the anchor recess, the restraint ring is positioned at the lower end of the sleeve and sleeved on the upper part of the prestressed steel strand to form a bundle, the steel strand upwards penetrates through the sleeve, and the sleeve is coaxially and correspondingly communicated with the embedded steel pipe in the prefabricated pier body; self-leveling concrete anchoring prestressed steel strand anchoring ends and sleeves are poured into the anchor pits, grooves are reserved on two side walls of each anchor pit at intervals from top to bottom, the prestressed steel strands upwards penetrate through the embedded steel pipes in the prefabricated pier bodies to the tops of the prefabricated pier bodies, a grouting hole is formed in one side wall of the lower portion of each prefabricated pier body, and the grouting holes are communicated with the embedded steel pipes.

The utility model discloses in through setting up pre-buried steel pipe, provide the passageway that the prestressing force steel strand wires passed prefabricated pier shaft and bent cap, guarantee that prestressing force steel strand wires wears to prefabricated bent cap stretch-draw notch. Through setting up the mud jacking hole, it is intraductal to be full of the mortar reservation pipeline and sleeve, makes prestressing force steel strand wires and reservation pipeline and sleeve pipe hug closely be connected, guarantees prestressing force steel strand wires biography power effect. The divergent steel strands are gathered by the restraint rings, bundled and positioned by penetrating through the sleeve, and correspond to the position of the reserved steel pipe of the prefabricated pier body. The anchoring effect of the self-leveling concrete is enhanced by arranging the anchor cave wall groove and the spiral rib. The anchoring effect of the fixed end of the prestressed steel strand is enhanced by arranging the anchoring base plate and the extrusion spring of the extrusion sleeve.

Drawings

FIG. 1 is a schematic view of a self-sinking anchor for use in the connection of fabricated piers.

Detailed Description

The invention is described in further detail below with reference to the following description of the drawings and the detailed description.

Referring to fig. 1, a self-sinking anchor device for connecting an assembly type pier comprises an embedded steel pipe 1, a mud jacking hole 2, a sleeve 3, a restraint ring 4, a groove 5, an anchor recess 6, a prestressed steel strand 7, a spiral rib 8, an anchoring backing plate 9 and an extrusion sleeve extrusion spring 10. The anchor recess 6 is located within the cast-in-place foundation 12. A plurality of preformed holes are uniformly distributed on the anchoring base plate 9, and one end of the prestressed steel strand 7 penetrates through the preformed holes on the anchoring base plate 9 and is clamped and locked at the end part through the extrusion spring 10 of the extrusion sleeve to form an anchoring end of the prestressed steel strand 7; the spiral reinforcement 8 is sleeved outside the prestressed steel strand 7 to enhance the anchoring effect of the self-leveling concrete; the sleeve 3 is positioned at the center of the upper part of the anchor recess 6, the restraint ring 4 is positioned at the lower end of the sleeve 3 and sleeved on the upper part of the prestressed steel strand 7 to form a bundle, the steel strand 7 penetrates through the sleeve 3, and the sleeve 3 is coaxially and correspondingly communicated with the embedded steel pipe 1 in the prefabricated pier body 11; self-leveling concrete is poured into the anchor recess 6, the anchoring ends of the prestressed steel strands 7 and the sleeve 3 are anchored, grooves 5 are reserved on two side walls of the anchor recess 6 at intervals from top to bottom, and the anchoring effect of the self-leveling concrete is enhanced; the prestressed steel strand 7 penetrates through the embedded steel pipe 1 in the prefabricated pier body 11 to the top of the prefabricated cover beam at the top of the prefabricated pier body 11, single-end tensioning is carried out, and the cast-in-place foundation, the prefabricated pier body and the prefabricated cover beam are connected; and a grouting hole 2 is formed in one side wall of the lower part of the prefabricated pier body 11, and the grouting hole 2 is communicated with the embedded steel pipe 1. After tensioning is finished, the grouting holes 2 are used as grouting channels, mortar is pressed into the embedded steel pipe 1 and the sleeve 3, the prestressed steel strands 7 are connected with the embedded steel pipe 1 and the sleeve 3 in a close contact mode, the force transmission effect of the prestressed steel strands 7 is guaranteed, and meanwhile the prestressed steel strands 7 are prevented from being corroded. The adopted prestressed steel strand conforms to the requirements of steel strand for prestressed concrete (GB 5224-2014).

Claims (1)

1. The utility model provides an assembled pier is connected with sinking formula ground tackle device certainly, includes pre-buried steel pipe (1), mud jacking hole (2), sleeve pipe (3), restraint circle (4), recess (5), anchor cave (6), prestressing steel strand wires (7), spiral muscle (8), anchor backing plate (9), extrusion cover extrusion spring (10), characterized by: a plurality of preformed holes are uniformly distributed on the anchoring backing plate (9), one end of the prestressed steel strand (7) penetrates through the preformed holes on the anchoring backing plate (9) and is locked at the end part through the extrusion sleeve extrusion spring (10) to form an anchoring end of the prestressed steel strand (7); the spiral ribs (8) are sleeved on the outer side of the prestressed steel strand (7), the sleeve (3) is positioned at the center of the upper part of the anchor recess (6), the restraint ring (4) is positioned at the lower end of the sleeve (3) and sleeved on the upper part of the prestressed steel strand (7) to form a bundle, the steel strand (7) upwards penetrates through the sleeve (3), and the sleeve (3) is coaxially and correspondingly communicated with the embedded steel pipe (1) in the prefabricated pier body (11); pour into in anchor cave (6) from the anchoring of flat concrete anchor prestressing force steel strand wires (7) anchor end and sleeve pipe (3), reserve by last interval down on the both sides wall of anchor cave (6) and have recess (5), prestressing force steel strand wires (7) upwards pass pre-buried steel pipe (1) to prefabricated pier shaft (11) top in prefabricated pier shaft (11), are setting up on a lateral wall of prefabricated pier shaft (11) lower part and are being squeezed slurry hole (2), squeeze slurry hole (2) with pre-buried steel pipe (1) be linked together.

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