CN204825619U - Assembled concrete bridge mound - Google Patents

Abstract

The utility model provides an assembled concrete bridge mound, the bottom of coxopodite section (2) sets up in base (1), and the upper end of coxopodite section (2) is connected with standard segment's (3) lower extreme, and the upper end and the lower extreme of Y festival section (4) of standard segment (3) are connected, the both ends of entablature (5) are fixed respectively on two limbs of Y festival section (4). Be connected through upper end with the coxopodite section and standard segment's lower extreme, standard segment's the upper end and the lower extreme of Y festival section are connected, the both ends of entablature are fixed respectively on two limbs of Y festival section, and the construction of this kind of assembly methods is simple and convenient, connect through the tongue -and -groove interface between the section of adjacent festival to plug on connecting the face pin (6), (7) prestress application is restrainted through the vertical prestressing steel of putting on in advance in the vertical back of assembling of pier, makes pier festival section tightly link together, and whole connectivity is good, the atress performance is strong, has effectively improved construction speed.

Description

Prefabricated concrete piers

technical field

The utility model relates to a concrete bridge pier, in particular to an assembled concrete bridge pier, which belongs to the technical field of bridge engineering.

Background technique

Today, with the rapid development of urban construction, more low-carbon, environmentally friendly and efficient construction requirements are put forward for urban bridge construction. The roads often need to be closed during the cast-in-place construction of urban bridges, and the construction and transportation of concrete materials will bring dust, noise and other pollution to the city, seriously affecting the travel and quality of life of citizens. Therefore, in the construction of urban bridges, fast and environmentally friendly prefabricated Bridge technology has gradually gained attention and development.

At present, most of the prefabricated bridge piers are reinforced concrete piers. The prefabricated sections of the bridge pier need to reserve a lot of steel bar channels. When splicing up and down, it is necessary to center the steel bar channels first, insert the steel bars into the channels one by one, and then connect the prefabricated segments. Injection of grout into the rebar channels causes the rebar and segmental concrete to bond together. This kind of prefabricated pier requires a lot of work during the assembly process, and requires maintenance after grouting, and the construction period is relatively long.

Contents of the invention

The purpose of the utility model is to provide a prefabricated concrete bridge pier, which has good overall connection, strong mechanical performance, convenient assembly and quick construction.

In order to achieve the above purpose, the utility model provides an assembled concrete pier, which includes a base, a bottom segment, the bottom of which is set in the base, and also includes a standard segment, a Y segment and an upper beam. The upper end of the segment is connected with the lower end of the standard segment, and the upper end of the standard segment is connected with the lower end of the Y segment; the two ends of the upper beam are respectively fixed on the two limbs of the Y segment.

Further, the upper end of the bottom segment is connected to the lower end of the standard segment by pins, and the upper end of the standard segment is connected to the lower end of the Y segment by pins.

Further, the upper and lower end faces of the bottom segment and the standard segment, and the lower end face of the Y segment are set as tongue-and-groove interfaces.

Further, the centers of the bottom segment, the standard segment and the Y segment are all provided with vertical corrugated pipes, and the vertical prestressed steel bundles are arranged in the vertical corrugated pipes.

Further, anchor heads are respectively arranged at the top and bottom ends of the vertical prestressed steel tendons.

Further, a transverse corrugated pipe is reserved in the upper beam, which passes through the transverse prestressed steel bundle and is anchored to the beam anchor heads on the outer sides of the two limbs of the Y segment.

Further, the pier tops of both limbs of the Y segment are provided with rubber bearings.

Beneficial effects: by connecting the upper end of the bottom segment with the lower end of the standard segment, the upper end of the standard segment is connected with the lower end of the Y segment; the two ends of the upper beam are respectively fixed on the two limbs of the Y segment, this assembly The construction method is simple and convenient. Adjacent segments are connected by tongue-and-groove interface, and pins are inserted on the connection surface. After the pier is vertically assembled, prestress is applied through pre-threaded prestressed steel beams, so that the pier segments are tight. Connected together, the overall connection is good, the mechanical performance is strong, and the construction speed is effectively improved.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic cross-sectional view of the standard segment in Fig. 1 .

In the figure: 1. Base, 2. Bottom segment, 3. Standard segment, 4. Y segment, 5. Upper beam, 5-1. Transverse corrugated pipe, 5-2. Transverse prestressed steel beam, 5 -3, beam anchor head, 6, pin, 6-1, pin hole, 7, vertical prestressed steel beam, 7-1, vertical corrugated pipe, 7-2, anchor head, 8, tongue and groove interface, 9 , Rubber bearings.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figures 1 and 2, an assembled concrete pier includes a base 1, a bottom segment 2, the bottom of the bottom segment 2 is set in the base 1, and a standard segment 3, a Y segment 4 and the upper beam 5, the upper end of the bottom segment 2 is connected to the lower end of the standard segment 3, and the upper end of the standard segment 3 is connected to the lower end of the Y segment 4; the two ends of the upper beam 5 are respectively fixed on the Y segment 4 on both limbs.

The upper end of the bottom segment 2 is connected with the lower end of the standard segment 3 through a pin 6, and the upper end of the standard segment 3 is connected with the lower end of the Y segment 4 through a pin 6. The pin 6 is a Q345 steel bar or steel bar with a diameter greater than 20mm and a length of If it is larger than 1000mm, insert it into the pin hole 6-1.

Due to the large meshing force of the tongue-and-groove interface, the upper and lower end surfaces of the bottom segment 2 and the standard segment 3, and the lower end surface of the Y segment 4 are set as the tongue-and-groove interface 8, which can enhance the anti-destructive performance of each connection interface.

The center of the bottom segment 2, the standard segment 3 and the Y segment is provided with a vertical corrugated pipe 7-1, and the vertical prestressed steel beam 7 is arranged in the vertical corrugated pipe 7-1, and the vertical prestressed steel tendon The setting of 7 makes the various sections of the bridge pier tightly connected together, and enhances the prestress of the bridge pier.

Anchor heads 7-2 are arranged at the top and bottom ends of the vertical prestressed steel beams 7, respectively.

A transverse corrugated pipe 5-1 is reserved in the upper beam 5, and a transverse prestressed steel beam 5-2 is inserted inside, anchored on the beam anchor head 5-3 outside the two limbs of the Y segment 4, which can strengthen the relationship between the upper beam 5 and the Y Segment 4 Reliability of the connection between the two limbs.

Since the rubber bearings have sufficient vertical stiffness to withstand vertical loads and can reliably transmit the pressure of the superstructure, rubber bearings 9 are provided on the tops of both limb piers of the Y segment 4 .

When the pier is assembled, the base 1 is a cast-in-place concrete structure at the bridge construction site, the bottom segment 2, the standard segment 3, the Y segment 4 and the upper beam 5 are factory prefabricated concrete structures, and the upper and lower segments pass through the tongue and groove interface 8 Connect, and insert the pin 6 on the connection surface, after the pier is vertically assembled, prestress is applied through the pre-threaded prestressed steel beam 7, so that the pier segments are tightly connected together, and the two vertical prestressed steel beams 7 Anchor heads 7-2 are located at the axilla of the Y segment and the bottom of the bottom segment 2, respectively. The utility model is simple and convenient in construction, reliable in force, and effectively improves the construction speed.

Claims (7)

1. A prefabricated concrete bridge pier comprises a base (1), a bottom segment (2), and the bottom of the bottom segment (2) is arranged in the base (1), and is characterized in that it also includes a standard segment (3), Y segment (4) and upper beam (5), the upper end of the bottom segment (2) is connected with the lower end of the standard segment (3), and the upper end of the standard segment (3) is connected with the Y segment (4) ) is connected at the lower end; the two ends of the upper beam (5) are respectively fixed on the two limbs of the Y segment (4). 2. The fabricated concrete pier according to claim 1, characterized in that, the upper end of the bottom segment (2) is connected with the lower end of the standard segment (3) by pins (6), and the upper end of the standard segment (3) It is connected with the lower end of the Y segment (4) through a pin (6). 3. The assembled concrete pier according to claim 1 or 2, characterized in that, the upper and lower end faces of the bottom segment (2) and the standard segment (3), and the lower end face of the Y segment (4) are all set as Tongue interface (8). 4. The fabricated concrete pier according to claim 1 or 2, characterized in that, the centers of the bottom segment (2), the standard segment (3) and the Y segment (4) are all provided with vertical corrugated pipes ( 7-1), the vertical prestressed steel beam (7) is arranged in the vertical corrugated pipe (7-1). 5. The fabricated concrete bridge pier according to claim 4, characterized in that anchor heads (7-2) are respectively provided at the top and bottom ends of the vertical prestressed steel tendons (7). 6. The fabricated concrete pier according to claim 1, characterized in that, a transverse corrugated pipe (5-1) is reserved in the upper beam (5), and a transverse prestressed steel beam (5-2) is inserted inside. ), anchored on the beam anchor heads (5-3) on the lateral sides of the two limbs of the Y segment (4). 7. The prefabricated concrete pier according to claim 5, characterized in that rubber bearings (9) are provided on both pier tops of the Y segment (4).