Joint connecting device between assembly type prefabricated piers

Abstract

The utility model relates to the technical field of prefabricated piers, and discloses a node connecting device between assembly type prefabricated piers, which comprises an upper prefabricated pier column and a lower prefabricated pier column, and a load-bearing self-locking module and an energy consumption replaceable module are arranged between the upper prefabricated pier column and the lower prefabricated pier column; the bearing self-locking module comprises a first conical cavity formed in the bottom of the upper prefabricated pier column and a second conical cavity formed in the top of the lower prefabricated pier column. The conical bearing column is inserted between the first conical cavity of the upper prefabricated pier column and the second conical cavity of the lower prefabricated pier column, the outer surface of the conical bearing column and the inner surfaces of the first conical cavity and the second conical cavity are arranged to be matched conical matching surfaces, and automatic locking can be achieved through axial pressing force; the bearing self-locking module can bear main vertical loads and bending moments, and the energy dissipation replaceable module can bear reciprocating loads caused by earthquakes or wind vibration and dissipate energy.

Description

Technical Field

[0001] This utility model relates to the field of precast bridge pier technology, specifically a node connection device between assembled precast bridge piers. Background Technology

[0002] With the continuous advancement of technology, the technical requirements for bridge structures are constantly increasing. Bridges with large spans and high heights are gradually appearing in people's lives. The construction method has also gradually changed from the traditional on-site casting of all components to partial or majority prefabrication in factories, which are then transported to the construction site for installation. Since it is difficult to prefabricate very tall bridge piers uniformly, segmented prefabrication is required. The primary problem to be solved in prefabricated bridge pier assembly is the connection between the nodes of each component.

[0003] In the field of prefabricated bridge construction, the joint connection performance of precast piers directly determines the overall safety and seismic resistance of the structure. Traditional precast pier joints mostly use grouting sleeves or welding connections, which have the following drawbacks: grouting sleeves require on-site grouting and curing, resulting in a long construction period; welding requires high operational precision; and joints are usually rigidly designed, making them prone to brittle failure during earthquakes, and the damage is irreparable, requiring the replacement of the entire pier, resulting in waste and relatively high costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a node connection device between prefabricated bridge piers.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a node connection device between prefabricated bridge piers, including an upper prefabricated pier column and a lower prefabricated pier column. A load-bearing self-locking module and an energy-consuming replaceable module are provided between the upper and lower prefabricated pier columns. The load-bearing self-locking module includes a first conical cavity at the bottom of the upper prefabricated pier column and a second conical cavity at the top of the lower prefabricated pier column, as well as a conical load-bearing column inserted between the first and second conical cavities. The outer surface of the conical load-bearing column and the inner surfaces of the first and second conical cavities are set as matching conical mating surfaces. The energy-consuming replaceable module includes an upper connecting ring plate fixed at the bottom of the upper prefabricated pier column and a lower connecting ring plate fixed at the top of the lower prefabricated pier column. A metal energy-consuming device is connected between the upper and lower connecting ring plates through a detachable connector.

[0007] As a preferred technical solution of this utility model, the conical load-bearing column is provided with a grouting channel inside, and the grouting channel is filled with grouting material or epoxy resin.

[0008] As a preferred technical solution of this utility model, the conical mating surface includes axial wedge-shaped grooves provided at both ends of the conical load-bearing column, and the inner walls of the first conical cavity and the second conical cavity are provided with axial wedge-shaped blocks that mate with the axial wedge-shaped grooves.

[0009] As a preferred technical solution of this utility model, the metal energy consumer adopts an X-shaped steel plate energy consumer.

[0010] As a preferred technical solution of this utility model, the detachable connector includes an elongated hole on the surface of the upper connecting ring plate and the lower connecting ring plate, and the upper connecting ring plate and the lower connecting ring plate are detachably connected by high-strength bolts in the elongated hole.

[0011] As a preferred technical solution of this utility model, the tapered load-bearing column is made of stainless steel composite steel.

[0012] The beneficial effects of this utility model are:

[0013] This type of prefabricated bridge pier connection device uses a conical load-bearing column inserted between the first conical cavity of the upper prefabricated pier and the second conical cavity of the lower prefabricated pier. The outer surface of the conical load-bearing column and the inner surface of the first and second conical cavities are designed as matching conical mating surfaces. Automatic locking can be achieved through axial clamping force, eliminating the need for on-site grouting and curing, thus shortening the construction period. The absence of welding ensures construction accuracy. The self-locking load-bearing module can bear the main vertical load and bending moment, while the replaceable energy-dissipating module can bear the reciprocating load caused by earthquakes or wind vibrations and dissipate energy. After an earthquake, only the replaceable energy-dissipating module needs to be replaced, without replacing the entire upper and lower prefabricated piers, thus reducing costs. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a structural schematic diagram of a node connection device between prefabricated bridge piers according to the present invention.

[0016] Figure 2 This is a structural cross-sectional view of a node connection device between prefabricated bridge piers according to this utility model.

[0017] Figure 3 This utility model relates to a node connection device between prefabricated bridge piers. Figure 2 Schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Upper precast pier; 2. Lower precast pier; 3. Load-bearing self-locking module; 301. First conical cavity; 302. Second conical cavity; 303. Conical load-bearing column; 3031. Grouting channel; 304. Conical mating surface; 3041. Axial wedge groove; 3042. Axial wedge block; 4. Replaceable energy-consuming module; 401. Upper connecting ring plate; 402. Lower connecting ring plate; 5. Detachable connector; 501. Elongated hole; 502. High-strength bolt; 6. Metal energy consumer. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Example: Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a node connection device between prefabricated bridge piers, including an upper prefabricated pier 1 and a lower prefabricated pier 2. A load-bearing self-locking module 3 and an energy-consuming replaceable module 4 are provided between the upper prefabricated pier 1 and the lower prefabricated pier 2. The load-bearing self-locking module 3 includes a first conical cavity 301 at the bottom of the upper prefabricated pier 1 and a second conical cavity 302 at the top of the lower prefabricated pier 2, and a conical load-bearing column 303 inserted between the first conical cavity 301 and the second conical cavity 302. The outer surface of the conical load-bearing column 303 and the inner surfaces of the first conical cavity 301 and the second conical cavity 302 are configured as matching conical mating surfaces 304. The energy-consuming replaceable module 4 includes an upper connecting ring plate 401 fixed to the bottom of the upper prefabricated pier 1 and a lower connecting ring plate 402 fixed to the top of the lower prefabricated pier 2. The upper connecting ring plate 401 and the lower connecting ring plate 402 are connected together. A metal energy dissipator 6 is connected between the lower connecting ring plates 402 via a detachable connector 5. A conical load-bearing column 303 is inserted between the first conical cavity 301 of the upper precast pier 1 and the second conical cavity 302 of the lower precast pier 2. The outer surface of the conical load-bearing column 303 and the inner surface of the first conical cavity 301 and the second conical cavity 302 are set as matching conical mating surfaces 304. Automatic locking can be achieved by axial clamping force, eliminating the need for on-site grouting and curing, shortening the construction period, and eliminating the need for welding, thus ensuring construction accuracy. The load-bearing self-locking module 3 can bear the main vertical load and bending moment, and the energy dissipation replaceable module 4 can bear the reciprocating load caused by earthquakes or wind vibrations and dissipate energy. After an earthquake, only the energy dissipation replaceable module 4 needs to be replaced, without the need to replace the entire upper precast pier 1 and lower precast pier 2, thus reducing costs.

[0021] The tapered load-bearing column 303 has a grouting channel 3031 inside, and the grouting channel 3031 is filled with grouting material or epoxy resin.

[0022] The conical mating surface 304 includes axial wedge-shaped grooves 3041 at both ends of the conical load-bearing column 303. The inner walls of the first conical cavity 301 and the second conical cavity 302 are provided with axial wedge-shaped blocks 3042 that mate with the axial wedge-shaped grooves 3041. Through the wedge-shaped mating of the axial wedge-shaped grooves 3041 of the conical load-bearing column 303 and the axial wedge-shaped blocks 3042 of the first conical cavity 301 and the second conical cavity 302, radial separation is generated under the action of axial clamping force, realizing automatic mechanical locking without the need for on-site welding or grouting, which significantly improves installation efficiency.

[0023] The metal energy consumer 6 is an X-shaped steel plate energy consumer, which includes steel plates arranged in a cross pattern. The steel plates are fixed between the upper connecting ring plate 401 and the lower connecting ring plate 402 by high-strength bolts 502.

[0024] The detachable connector 5 includes an elongated hole 501 on the surface of the upper connecting ring plate 401 and the lower connecting ring plate 402. The upper connecting ring plate 401 and the lower connecting ring plate 402 are detachably connected by a high-strength bolt 502 in the elongated hole 501, which is used to adjust the installation position and preload of the metal energy consumer 6.

[0025] The tapered load-bearing column 303 is made of stainless steel composite material, which not only ensures the efficient transmission of vertical load and bending moment, but also alleviates stress concentration.

[0026] During operation, the node connection device between these prefabricated bridge piers uses a conical load-bearing column 303 inserted between the first conical cavity 301 of the upper prefabricated pier 1 and the second conical cavity 302 of the lower prefabricated pier 2. The outer surface of the conical load-bearing column 303 and the inner surfaces of the first and second conical cavities 301 and 302 are designed as matching conical mating surfaces 304. Automatic locking can be achieved through axial clamping force, eliminating the need for on-site grouting and curing, thus shortening the construction period. The absence of welding ensures construction accuracy. The self-locking load-bearing module 3 can bear the main vertical load and bending moment, while the replaceable energy-dissipating module 4 can bear the reciprocating load caused by earthquakes or wind vibrations and dissipate energy. After an earthquake, only the replaceable energy-dissipating module 4 needs to be replaced, without the need to replace the entire upper and lower prefabricated piers 1 and 2, thus reducing costs.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A node connection device between prefabricated bridge piers, comprising an upper prefabricated pier column (1) and a lower prefabricated pier column (2), characterized in that, The upper precast pier (1) and the lower precast pier (2) are provided with a load-bearing self-locking module (3) and an energy-consuming replaceable module (4). The load-bearing self-locking module (3) includes a first conical cavity (301) at the bottom of the upper precast pier (1) and a second conical cavity (302) at the top of the lower precast pier (2), as well as a conical load-bearing column (303) inserted between the first conical cavity (301) and the second conical cavity (302). The outer surface of the conical load-bearing column (303) and the inner surfaces of the first conical cavity (301) and the second conical cavity (302) are set as matching conical mating surfaces (304). The replaceable energy-consuming module (4) includes an upper connecting ring plate (401) fixed at the bottom of the upper precast pier (1) and a lower connecting ring plate (402) fixed at the top of the lower precast pier (2). A metal energy-consuming device (6) is connected between the upper connecting ring plate (401) and the lower connecting ring plate (402) through a detachable connector (5).

2. The node connection device between prefabricated bridge piers according to claim 1, characterized in that, The tapered load-bearing column (303) has a grouting channel (3031) inside, and the grouting channel (3031) is filled with grouting material or epoxy resin.

3. The node connection device between prefabricated bridge piers according to claim 1, characterized in that, The conical mating surface (304) includes axial wedge-shaped grooves (3041) provided at both ends of the conical load-bearing column (303), and the inner walls of the first conical cavity (301) and the second conical cavity (302) are provided with axial wedge-shaped blocks (3042) that mate with the axial wedge-shaped grooves (3041).

4. The node connection device between prefabricated bridge piers according to claim 1, characterized in that, The metal energy consumer (6) is an X-shaped steel plate energy consumer.

5. The node connection device between prefabricated bridge piers according to claim 1, characterized in that, The detachable connector (5) includes an elongated hole (501) on the surface of the upper connecting ring plate (401) and the lower connecting ring plate (402), and the upper connecting ring plate (401) and the lower connecting ring plate (402) are detachably connected by a high-strength bolt (502) in the elongated hole (501).

6. The node connection device between prefabricated bridge piers according to claim 1, characterized in that, The tapered load-bearing column (303) is made of stainless steel composite steel.

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