Prefabricated bridge pier connector in socket and spigot joint type connection

Abstract

The utility model belongs to the technical field of bridge construction, and discloses a socket and spigot type prefabricated bridge pier connector. Comprising a prefabricated hollow pier, and the prefabricated hollow pier comprises a first main pier and a second main pier. And the bottom end of the first main body pier is connected with the top end of the second main body pier through a connecting piece. The connecting piece comprises an embedded steel rib, a first end steel plate, a second end steel plate, a connecting sheath and a receiving groove. The multiple embedded steel ribs are divided into two sets, and the two sets of embedded steel ribs are internally connected with the first main body pier and the second main body pier correspondingly. The bottom end of the embedded steel rib located at the first main pier is fixedly connected with the first end steel plate, the lower side of the first end steel plate is fixedly connected with the connecting sheath, and the top end of the embedded steel rib located at the second main pier is fixedly connected with the second end steel plate. The upper side of the second end steel plate is connected with the bearing groove, and the connecting sheath is connected with the bearing groove in a clamped mode. The problems that a traditional cast-in-place pier column is relatively low in quality assurance rate, low in industrialization degree and low in construction efficiency are solved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a socket-type precast bridge pier connection. Background Technology

[0002] With the rapid development of China's economy and society, urban traffic volume is becoming increasingly heavy. Along with the development of bridge engineering, the role and value of prefabrication and assembly technology in bridge construction are growing daily. Prefabrication and assembly technology involves manufacturing the bridge piers in a factory, transporting them to the construction site, and assembling them into a whole using cranes, thus enabling rapid construction of the bridge substructure. Compared with traditional construction methods, using steel plates to fix prefabricated bridge piers reduces construction time and land occupation, and also reduces the impact on surrounding traffic and the environment.

[0003] Currently, prefabrication and assembly technology for bridge superstructures in China is relatively mature, while prefabrication and assembly technology for bridge substructures, especially piers, is less common, only being applied in some urban viaducts. For substructures, traditional cast-in-place piers have relatively low quality assurance rates, are prone to defects, are affected by external environment and climate, leading to longer construction periods, significant traffic disruption, and environmental pollution, and have a low level of industrialization. Prefabricated substructures are a green and environmentally friendly construction method; however, the assembly joints become a critical issue during substructure assembly.

[0004] Traditional cast-in-place piers have long construction periods and high costs. Moreover, they are greatly affected by the construction environment, making the construction of high piers difficult and complicating the quality of construction. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a socket-type precast bridge pier connection, which solves the problems of relatively low quality assurance rate, low degree of industrialization, and low construction efficiency of traditional cast-in-place piers.

[0006] A socket-type precast bridge pier connection includes a precast hollow pier, wherein the precast hollow pier includes a first main pier and a second main pier;

[0007] The bottom end of the first main pier and the top end of the second main pier are connected by a connector;

[0008] The connector includes: a pre-embedded steel rib, a first end steel plate, a second end steel plate, a connecting sheath, and a receiving groove. The pre-embedded steel ribs are multiple pieces and divided into two groups. The two groups of pre-embedded steel ribs are respectively connected to the first main pier and the second main pier. The bottom end of the pre-embedded steel rib located at the first main pier is fixedly connected to the first end steel plate, and the lower side of the first end steel plate is fixedly connected to the connecting sheath. The top end of the pre-embedded steel rib located at the second main pier is fixedly connected to the second end steel plate, and the upper side of the second end steel plate is connected to the receiving groove. The connecting sheath is connected to the receiving groove by a snap-fit ​​method.

[0009] Furthermore, it also includes: the outer side of the connecting sheath has serrations, the inner side of the receiving groove has serrations, and the two serrations are engaged.

[0010] Furthermore, it also includes: an elastic element connected inside the receiving groove that allows the connecting sheath to spring back under tension.

[0011] Furthermore, the two sets of pre-embedded steel ribs are evenly arranged in the first main pier and the second main pier respectively. The sidewalls of the two sets of pre-embedded steel ribs are vertically arranged with multiple through holes, and steel bars are inserted into the through holes.

[0012] Furthermore, the first end steel plate and the second end steel plate are in a ring shape.

[0013] Furthermore, angle steel is installed on the inner wall of the second main pier, and a bottom template is connected to the upper part of the angle steel.

[0014] As can be seen from the above technical solution, the precast bridge pier connection provided by this utility model achieves a rapid splicing effect by connecting the first main pier and the second main pier through connectors; pre-embedded steel ribs increase the shear resistance of the first and second main piers; the connecting sheath is inserted into the receiving groove, so that the teeth of the connecting sheath and the receiving groove interlock to prevent the first main pier from slipping and tilting; the elastic element prevents the connecting sheath from falling directly to the bottom of the receiving groove, which would cause the receiving groove and the connecting sheath to not be tightly engaged when the connecting sheath falls, and the elastic element ensures that the connecting sheath and the receiving groove are always engaged when the connecting sheath is subjected to tension, preventing the teeth from loosening; multiple steel bars are inserted through the pre-embedded steel ribs to increase the shear resistance of the pre-embedded steel ribs; and concrete is poured onto the bottom membrane plate to make the first and second main piers tightly connected. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a front view of a prefabricated bridge pier connection with a socket-type connection according to this utility model;

[0017] Figure 2 This is a cross-sectional view of a precast bridge pier connection with a socket-type connection according to this utility model.

[0018] Figure 3 This is an enlarged schematic diagram of the socket-type precast bridge pier connection and other components in this utility model;

[0019] Figure 4This is an enlarged schematic diagram of the connecting sheath and other components in a socket-type prefabricated bridge pier connection according to this utility model;

[0020] Figure 5 This is a schematic diagram showing the correspondence between the connecting sheath and the receiving groove in a precast bridge pier connection with a socket-type connection according to this utility model;

[0021] Figure 6 This is a cross-sectional view of components such as the receiving groove in a precast bridge pier connection with a socket-type connection according to this utility model;

[0022] Figure 7 This is a cross-sectional view of components such as the connecting sheath in a precast bridge pier connection with a socket-type connection according to this utility model;

[0023] Figure 8 This is a cross-sectional view of components such as embedded steel ribs in a precast bridge pier connection with a socket-type connection according to this utility model.

[0024] Figure label:

[0025] 1. Precast hollow pier; 100. First main pier; 101. Second main pier; 2. Connector; 21. Embedded steel rib; 22. First end steel plate; 23. Second end steel plate; 24. Connecting sheath; 25. Receiving groove; 3. Sawtooth; 4. Reinforcing bar; 5. Bottom formwork; 6. Angle steel; 7. Elastic element; 8. Perforation. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] like Figure 1-8 As shown in the figure, this embodiment provides a socket-type precast bridge pier connection, including: a precast hollow pier 1, wherein the precast hollow pier 1 includes a first main pier 100 and a second main pier 101.

[0028] The bottom end of the first main pier 100 and the top end of the second main pier 101 are connected by a connector 2, thereby splicing the first main pier 100 and the second main pier 101 into a whole.

[0029] The connector 2 includes: embedded steel ribs 21, a first end steel plate 22, a second end steel plate 23, a connecting sheath 24, and a receiving groove 25. The embedded steel ribs 21 are multiple pieces divided into two groups. The two groups of embedded steel ribs 21 are respectively connected to the first main pier 100 and the second main pier 101. The two groups of embedded steel ribs 21 are evenly distributed in a quincunx pattern within the first main pier 100 and the second main pier 101. The two groups of embedded steel ribs 21 are used to increase shear resistance.

[0030] The bottom end of the pre-embedded steel rib 21 located at the first main pier 100 is fixedly connected to the first end steel plate 22. The lower side of the first end steel plate 22 is fixedly connected to the connecting sheath 24, so that the first end steel plate 22 drives the connecting sheath 24 to move synchronously. The top end of the pre-embedded steel rib 21 located at the second main pier 101 is fixedly connected to the second end steel plate 23. The upper side of the second end steel plate 23 is connected to the receiving groove 25, and the size of the receiving groove 25 matches the connecting sheath 24. The steel used in the receiving groove 25 is somewhat flexible so that the connecting sheath 24 can be inserted into it. The connecting sheath 24 is connected to the receiving groove 25 by a snap-fit ​​method. The outer side of the connecting sheath 24 is provided with serrations 3, and the inner side of the receiving groove 25 is provided with serrations 3. The two serrations 3 are snap-fitted together, so that the connecting sheath 24 is snapped into the receiving groove 25. The receiving groove 25 is connected to an elastic element 7 that allows the connecting sheath 24 to rebound under tension. The elastic element 7 keeps the connecting sheath 24 in a snap-fit ​​state with the receiving groove 25.

[0031] Two sets of pre-embedded steel ribs 21 are evenly arranged within the first main pier 100 and the second main pier 101 to increase shear resistance. The sidewalls of the two sets of pre-embedded steel ribs 21 have multiple vertically arranged perforations 8, with reinforcing bars 4 inserted into each perforation 8 to increase the shear resistance of the joint. The first end steel plate 22 and the second end steel plate 23 are annular, allowing concrete to be poured onto the bottom formwork. An angle steel 6 is installed 25cm below the inner top of the second main pier 101, and a bottom formwork 5 for pouring concrete is connected to the upper part of the angle steel 6. The bottom formwork 5 is used to intercept the concrete, ensuring a tighter connection between the first main pier 100 and the second main pier 101. The concrete pouring thickness is greater than 50cm.

[0032] The method of using this utility model is as follows: After the second main pier 101 is installed in the designated position, the first main pier 100 is lifted so that the connecting sheath 24 corresponds to the position of the receiving groove 25. At this time, the first main pier 100 is lowered so that the connecting sheath 24 extends into the receiving groove 25. When the connecting sheath 24 is lowered, the inclined surface of the saw teeth 3 of the connecting sheath 24 contacts the inclined surface of the saw teeth 3 of the receiving groove 25, so that the connecting sheath 24 can extend into the receiving groove 25, and the saw teeth 3 face opposite directions, thus locking the connecting sheath 24. As the connecting sheath 24 continues to descend, it comes into contact with the elastic element 7, compressing the elastic element 7. When the connecting sheath 24 is subjected to a tensile force, the elastic element 7 drives the connecting sheath 24 to rebound, so that the saw teeth 3 are always in the locked state. After the connecting sheath 24 and the receiving groove 25 are locked, concrete is poured into the first main pier 100. The concrete falls onto the bottom formwork 5 and is poured to the lower part of the first main pier 100, so that the height of the poured body is greater than 50cm to increase the connection strength.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A socket-type precast bridge pier connection, characterized in that, include: Precast hollow pier (1), the precast hollow pier (1) includes a first main pier (100) and a second main pier (101); The bottom end of the first main pier (100) and the top end of the second main pier (101) are connected by a connector (2); The connector (2) includes: a pre-embedded steel rib (21), a first end steel plate (22), a second end steel plate (23), a connecting sheath (24), and a receiving groove (25). The pre-embedded steel rib (21) consists of multiple pieces and is divided into two groups. The two groups of pre-embedded steel ribs (21) are respectively connected to the first main pier (100) and the second main pier (101). The bottom end of the pre-embedded steel rib (21) located at the first main pier (100) is fixedly connected to the first end steel plate (22). The lower side of the first end steel plate (22) is fixedly connected to the connecting sheath (24). The top end of the pre-embedded steel rib (21) located at the second main pier (101) is fixedly connected to the second end steel plate (23). The upper side of the second end steel plate (23) is connected to the receiving groove (25). The connecting sheath (24) is connected to the receiving groove (25) by a snap-fit ​​method.

2. A bell and spigot jointed precast pier connection according to claim 1 wherein, Also includes: The outer side of the connecting sheath (24) is provided with serrations (3), and the inner side of the receiving groove (25) is provided with serrations (3), and the two serrations (3) are engaged.

3. A socketed connection for a precast pier connection according to claim 2, wherein, Also includes: The receiving groove (25) is connected to an elastic element (7) that allows the connecting sheath (24) to rebound under tension.

4. A bell and spigot jointed precast pier connection according to claim 1 wherein, The two sets of embedded steel ribs (21) are evenly arranged in the first main pier (100) and the second main pier (101), respectively. The side walls of the two sets of embedded steel ribs (21) are vertically arranged with multiple through holes (8), and steel bars (4) are inserted in the through holes (8).

5. A bell and spigot jointed precast pier connection according to claim 1 wherein, The first end steel plate (22) and the second end steel plate (23) are in a ring shape.

6. A bell and spigot jointed precast pier connection according to claim 1 wherein, An angle steel (6) is installed on the inner wall of the second main pier (101), and a bottom template (5) is connected to the upper part of the angle steel (6).

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