A fabricated cap beam and pier column connecting structure

Abstract

The utility model provides a kind of assembled bent cap and pier column connecting structure, it is related to bridge building technical field, specifically discloses a structure capable of actively sealing bent cap and pier column connecting place gap. The structure includes the mounting seat installed on pier column, the outer side wall of mounting seat is equipped with a plurality of support rods around, lifting structure for driving support rod lifting is equipped on mounting seat, the top of support rod is equipped with sealing seat, the inboard of sealing seat is equipped with sealing structure. When lifting structure promotes support rod and approaches bent cap, sealing seat and bent cap abut, sealing structure approaches and seals the connecting place of bent cap and pier column, effectively prevent moisture, harmful medium invasion and pouring leakage.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to a prefabricated cap beam and pier column connection structure. Background Technology

[0002] In modern bridge and building structures, prefabricated construction technology is widely used due to its advantages such as fast construction speed, controllable quality, and minimal environmental impact. Among these technologies, the connection between precast cap beams and precast piers is a critical node in the overall structure, and its connection quality directly affects the structure's load-bearing capacity, durability, and safety.

[0003] In traditional prefabricated cap beam and pier connection methods, sleeve grouting, pre-drilled hole grouting, or socket connection are commonly used. These methods primarily focus on solving the problem of structural force transmission. However, the concrete joint connecting the cap beam and pier is an inherently weak point. Harmful media such as moisture, chloride ions, and carbon dioxide from the external environment can easily penetrate through this joint. This penetration can lead to corrosion of the internal steel reinforcement, deterioration of the concrete, and leakage during the pouring process, affecting the pouring quality, threatening the long-term durability of the structure, and increasing later maintenance costs. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated connection structure between the cap beam and the pier column, which addresses the shortcomings of the existing technology and solves the problems of easy intrusion of harmful media and leakage of the poured material at the connection between the cap beam and the pier column.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a prefabricated cap beam and pier column connection structure, including a mounting base installed on the pier column. A plurality of support rods are arranged around the outer side wall of the mounting base. A lifting structure for driving the support rods to rise and fall is provided on the outer side wall of the mounting base. A sealing seat is installed on the top of the support rod. A sealing structure is installed on the inner side of the sealing seat. The sealing structure is used to seal the connection between the cap beam and the pier column. When the lifting structure pushes the support rods closer to the cap beam, the sealing seat abuts against the cap beam, and the sealing structure moves closer to the connection between the cap beam and the pier column and seals it.

[0006] In some technical solutions of this utility model, the sealing structure includes an installation ring installed on the top of the sealing seat and a telescopic sealing ring belt. One end of the telescopic sealing ring belt is connected to the inner wall of the sealing seat, and the other end of the telescopic sealing ring belt is connected to the inner wall of the installation ring. The installation ring, the sealing seat and the telescopic sealing ring belt form a cavity after being enclosed. A valve body communicating with the cavity is provided on the outer wall of the sealing seat.

[0007] In some technical solutions of this utility model, there are also several push rods installed in the cavity. One end of the push rod is hinged to the inner wall of the sealing seat, and the free end of the push rod is connected to the inner wall of the telescopic sealing ring. An adjusting ring is sleeved on the outer wall of the several push rods. The inner diameter of the adjusting ring is smaller than the inner diameter of the circle in which the several ring-shaped push rods are located. The inner wall of the sealing seat is provided with several push rod structures connected to the adjusting ring. The telescopic end of the push rod structure is connected to the adjusting ring.

[0008] In some technical solutions of this utility model, a sealing ring is provided on the side wall where the sealing seat contacts the cover beam.

[0009] In some technical solutions of this utility model, a pressure sensor is provided on the side wall where the sealing seat contacts the cover beam, and the pressure sensor is electrically connected to the push rod structure.

[0010] In some technical solutions of this utility model, the lifting structure includes mounting cylinders that are installed on the mounting base and correspond one-to-one with the support rods. Each mounting cylinder is rotatably provided with an adjusting nut. The support rod is threadedly connected to the adjusting nut, and the support rod is rotatably connected to the sealing seat.

[0011] In some technical solutions of this utility model, the mounting base includes two clamping plates arranged in pairs, which can be detachably connected after being surrounded on the pier column.

[0012] In some technical solutions of this utility model, buffer pads are installed on the opposite side walls of the two clamping plates.

[0013] Compared to existing technologies, this utility model has at least the following advantages or beneficial effects: By setting a liftable sealing seat and sealing structure, it can actively adapt to and seal the gaps at the connection between the cap beam and the pier column, effectively preventing the intrusion of harmful media such as moisture and chloride ions, as well as leakage during the pouring process. The sealing structure adopts a chamber and telescopic sealing ring design, and the internal pressure can be adjusted through the valve body to adapt to gaps of different sizes and shapes, resulting in a good sealing effect. Through the cooperation of the top rod, adjusting ring, and push rod structure, local fine-tuning of the sealing pressure can be achieved, ensuring uniform contact of the sealing surface and avoiding leakage points. The lifting structure adopts threaded drive and has a self-locking function, which can ensure the stability of the sealing seat position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the mounting base and sealing base in this utility model.

[0016] Figure 3 This is a cross-sectional view of the sealing structure in this utility model.

[0017] Figure 4This is a cross-sectional view of the lifting structure in this utility model.

[0018] Reference numerals: 1. Mounting base; 101. Clamping plate; 102. Buffer pad; 2. Support rod; 3. Lifting structure; 301. Mounting cylinder; 302. Adjusting nut; 4. Sealing seat; 401. Sealing ring; 402. Pressure sensor; 5. Sealing structure; 501. Mounting ring; 502. Telescopic sealing ring band; 503. Chamber; 504. Valve body; 505. Top rod; 506. Adjusting ring; 507. Push rod structure; 6. Cap beam; 7. Pier column. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0021] Example This utility model provides a prefabricated connection structure between the cap beam 6 and the pier column 7, such as... Figures 1-4As shown, the installation includes a mounting base 1 installed on the pier 7. The mounting base 1 is a ring-shaped structure that can be fitted onto the outside of the pier 7 and fixed to the pier 7 by a clamp to prevent its own vertical displacement. Two symmetrically arranged support rods 2 are arranged around the outer wall of the mounting base 1. A lifting structure 3 is provided on the outer wall of the mounting base 1 to drive the support rods 2 to rise and fall. A sealing seat 4 is installed on the top of the support rod 2, and a sealing structure 5 is installed on the inner side of the sealing seat 4. The sealing structure 5 is used to seal the connection between the cap beam 6 and the pier 7. When the lifting structure 3 pushes the support rod 2 closer to the cap beam 6, the sealing seat 4 abuts against the cap beam 6, and the sealing structure 5 moves closer to the connection between the cap beam 6 and the pier 7 and seals it. The mechanical drive of the support rods 2 by the lifting structure 3 controls the relative position of the sealing seat 4 and the cap beam 6, so that the sealing structure 5 inside the sealing seat 4 can actively adapt to the gap at the connection between the cap beam 6 and the pier 7. Furthermore, the sealing structure 5 deforms or expands under pressure, filling the outer gap between the cap beam 6 and the pier 7, forming a physical barrier to prevent external pouring from the cap beam 6 to the pier 7 from leaking out. In actual use, firstly, the mounting base 1 is fixedly installed on the pier 7. Then, the lifting structure 3 drives the support rod 2 surrounding the outer wall of the mounting base 1 to rise and fall, causing the sealing seat 4 at the top of the support rod 2 to move towards the cap beam 6. When the sealing seat 4 abuts against the bottom of the cap beam 6, the sealing structure 5 is simultaneously activated, sealing the connection between the cap beam 6 and the pier 7. In the above process, the height of the support rod 2 is adjusted by the lifting structure 3 to ensure the sealing structure 5 and the sealing seat 4 are in close contact with the cap beam 6.

[0022] In some technical solutions of this utility model, the sealing structure 5 includes an mounting ring 501 installed on the top of the sealing seat 4 and a telescopic sealing ring band 502. The telescopic sealing ring band 502 is an L-shaped strip structure with an acute angle between its two vertical segments. One end of the telescopic sealing ring band 502 is connected to the inner wall of the sealing seat 4, and the other end of the telescopic sealing ring band 502 is connected to the inner wall of the mounting ring 501. The mounting ring 501, the sealing seat 4, and the telescopic sealing ring band 502 together form a cavity 503. A valve body 504 communicating with the cavity 503 is provided on the outer wall of the sealing seat 4. When the sealing seat 4 abuts against the cover beam 6, the telescopic sealing ring band 502 is compressed by the pressure of the cover beam 6 and the pier 7. Because the telescopic sealing ring band 502, the mounting ring 501, and the sealing seat 4 form the cavity 503, it can automatically fill the annular gap formed by the cover beam 6 and the pier 7 after being compressed by the above-mentioned structure. Gas or liquid can be injected or extracted into the chamber 503 via the valve body 504 mounted on the sealing seat 4, causing the telescopic sealing ring 502 to expand or contract, tightly fitting the connection between the cap beam 6 and the pier column 7. Furthermore, the telescopic sealing ring 502 is made of flexible material, allowing elastic deformation to adapt to changes in the shape of the connection. When the chamber 503 is pressurized, the internal pressure pushes the telescopic sealing ring 502 to expand outward or contract inward, forming an active seal. The valve body 504 controls the pressure in the chamber 503, adjusting the sealing force to allow the structure to adapt to gaps of different sizes and shapes. The chamber 503 also allows the sealing structure 5 to self-recover after being pressurized, enhancing durability.

[0023] In some technical solutions of this utility model, a plurality of push rods 505 are installed in the chamber 503, and the push rods 505 are spring-loaded telescopic rods. One end of the push rod 505 is hinged to the inner wall of the sealing seat 4, and the free end of the push rod 505 is connected to the inner wall of the telescopic sealing ring 502. An adjusting ring 506 is sleeved on the outer wall of the plurality of push rods 505. The inner diameter of the adjusting ring 506 is smaller than the inner diameter of the circle in which the plurality of ring-shaped push rods 505 are located. A plurality of push rod structures 507 connected to the adjusting rings 506 are provided on the inner wall of the sealing seat 4. The telescopic end of the push rod structure 507 is connected to the adjusting ring 506. When the push rod structure 507 pushes the adjusting ring 506 to move, the adjusting ring 506 forces the push rod 505 to swing around the hinge point. The free end of the push rod 505 pushes the telescopic sealing ring 502 to deform inward or outward, thereby adjusting the contact pressure between the sealing ring 401 and the connection point, realizing local fine adjustment of the sealing pressure, ensuring uniform contact of the sealing surface, and avoiding leakage points. In addition, the push rod structure 507 provides a stable drive for the electric push rod structure 507, adapts to uneven surfaces, and improves sealing reliability.

[0024] In some technical solutions of this utility model, a sealing ring 401 is provided on the side wall where the sealing seat 4 contacts the cover beam 6. When the sealing seat 4 abuts against the cover beam 6, the sealing ring 401 first contacts the cover beam 6 to form a preliminary seal, and then the sealing structure 5 performs the main seal. The sealing ring 401, as an auxiliary sealing element, provides the first barrier before the main sealing structure 5 is activated, reducing initial leakage. The sealing ring 401 works in conjunction with the main sealing structure 5 to form a multiple seal, increasing the sealing redundancy of this structure, providing basic protection even if the main seal fails; it also reduces the wear of the sealing structure 5 and extends its service life.

[0025] In some technical solutions of this utility model, a pressure sensor 402 is provided on the side wall where the sealing seat 4 contacts the cover beam 6. The pressure sensor 402 is electrically connected to the push rod structure 507. When the sealing seat 4 contacts the cover beam 6, the pressure sensor 402 detects the contact pressure and sends a signal to the push rod structure 507. The push rod structure 507 automatically adjusts the extension and retraction amount according to the signal, and then changes the pressure of the telescopic sealing ring 502 through the adjusting ring 506 and the top rod 505 to maintain the optimal sealing state. The pressure sensor 402 monitors the sealing pressure in real time and forms a control system with the push rod structure 507. When the pressure deviates from the set value, the push rod structure 507 automatically compensates to ensure that the sealing pressure is stable within the ideal range, avoiding sealing failure or structural damage caused by overpressure or underpressure.

[0026] In some technical solutions of this utility model, the lifting structure 3 includes mounting cylinders 301 installed on the mounting base 1, each corresponding to a support rod 2. Adjusting nuts 302 are rotatably installed inside each mounting cylinder 301. The support rod 2 is threadedly connected to the adjusting nuts 302, and the support rod 2 is rotatably connected to the sealing seat 4. By rotating the adjusting nuts 302, the support rod 2 is driven to rise and fall within the mounting cylinders 301, thereby adjusting the height of the sealing seat 4 so that the sealing seat 4 abuts against the cover beam 6. The rotational motion of the adjusting nuts 302 is converted into the linear motion of the support rod 2. The self-locking characteristic of the threads prevents the support rod 2 from accidentally sliding down, ensuring stable positioning.

[0027] In some technical solutions of this utility model, the mounting base 1 includes two clamping plates 101 arranged in pairs. The two clamping plates 101 are detachably connected after surrounding the pier column 7. The two clamping plates 101 surround the pier column 7 to form a ring-shaped fixing structure. Radial pressure is generated by the fasteners installed on the two clamping plates 101, so that the mounting base 1 is firmly attached to the surface of the pier column 7, the stress is evenly distributed, the clamping plates 101 are easy to install and disassemble, and are suitable for temporary or permanent structures; they are adaptable to pier columns 7 of different diameters, are easy to disassemble later, allow reuse, and reduce material costs.

[0028] In some technical solutions of this utility model, buffer pads 102 are installed on the opposite sidewalls of the two clamping plates 101. When the clamping plates 101 are fastened to the pier column 7, the buffer pads 102 are compressed, filling the gap between the clamping plates 101 and the pier column 7. The buffer pads 102 are made of elastic materials (such as rubber) and absorb vibration and impact energy through compression deformation, reducing hard contact between the metal clamps and the concrete pier column 7. At the same time, they provide frictional resistance, enhance the fixing effect, protect the surface of the pier column 7, prevent wear, and increase the friction of the mounting base 1 to prevent slippage and improve safety.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated cap beam (6) and pier column (7) connection structure, characterized in that, The device includes a mounting base (1) installed on the pier (7). Several support rods (2) are arranged around the outer wall of the mounting base (1). A lifting structure (3) for driving the support rods (2) to rise and fall is provided on the outer wall of the mounting base (1). A sealing seat (4) is installed on the top of the support rod (2). A sealing structure (5) is installed on the inner side of the sealing seat (4). The sealing structure (5) is used to seal the connection between the cap beam (6) and the pier (7). When the lifting structure (3) pushes the support rod (2) closer to the cap beam (6), the sealing seat (4) abuts against the cap beam (6), and the sealing structure (5) moves closer to the connection between the cap beam (6) and the pier (7) and seals it.

2. The prefabricated cap beam (6) and pier column (7) connection structure according to claim 1, characterized in that, The sealing structure (5) includes an mounting ring (501) installed on the top of the sealing seat (4) and a telescopic sealing ring (502). One end of the telescopic sealing ring (502) is connected to the inner wall of the sealing seat (4), and the other end of the telescopic sealing ring (502) is connected to the inner wall of the mounting ring (501). The mounting ring (501), the sealing seat (4) and the telescopic sealing ring (502) together form a chamber (503). A valve body (504) communicating with the chamber (503) is provided on the outer wall of the sealing seat (4).

3. The prefabricated cap beam (6) and pier column (7) connection structure according to claim 2, characterized in that, It also includes a plurality of push rods (505) installed in the chamber (503), one end of the push rod (505) is hinged to the inner wall of the sealing seat (4), the free end of the push rod (505) is connected to the inner wall of the telescopic sealing ring (502), and an adjusting ring (506) is sleeved on the outer wall of the plurality of push rods (505). The inner diameter of the adjusting ring (506) is smaller than the inner diameter of the circle in which the plurality of ring-shaped push rods (505) are located. The inner wall of the sealing seat (4) is provided with a plurality of push rod structures (507) connected to the adjusting ring (506), and the telescopic end of the push rod structure (507) is connected to the adjusting ring (506).

4. A prefabricated cap beam (6) and pier column (7) connection structure according to claim 2 or 3, characterized in that, A sealing ring (401) is provided on the side wall of the sealing seat (4) that contacts the cover beam (6).

5. The prefabricated cap beam (6) and pier column (7) connection structure according to claim 3, characterized in that, A pressure sensor (402) is provided on the side wall of the sealing seat (4) that contacts the cover beam (6), and the pressure sensor (402) is electrically connected to the push rod structure (507).

6. The prefabricated cap beam (6) and pier column (7) connection structure according to claim 1, characterized in that, The lifting structure (3) includes mounting cylinders (301) that are installed on the mounting base (1) and correspond one-to-one with the support rods (2). Each mounting cylinder (301) is provided with an adjusting nut (302). The support rods (2) are threadedly connected to the adjusting nuts (302). The support rods (2) are rotatably connected to the sealing seat (4).

7. The prefabricated cap beam (6) and pier column (7) connection structure according to claim 6, characterized in that, The mounting base (1) includes two clamp plates (101) arranged in pairs. The two clamp plates (101) can be detachably connected after surrounding the pier column (7).

8. The prefabricated cap beam (6) and pier column (7) connection structure according to claim 7, characterized in that, Buffer pads (102) are installed on the opposite side walls of the two clamp plates (101).

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