Assembled bridge prefabricated pier column hoisting and pre-burying device
By designing a lifting and embedding device for steel hinge wires and hoisting components for prefabricated pier columns, the problems of lifting ring positioning difficulties and concrete quality defects in the prior art are solved, and the effects of poreless casting and cost reduction are achieved.
Patent Information
- Application Number
- CN202421364806.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the prior art, it is difficult to locate the lifting ring during prefabricated pier column lifting, resulting in overflow of cement slurry during concrete pouring, resulting in quality defects.
A prefabricated bridge prefabricated pier column hoisting device is designed, using steel hinges and lifting components, and is pre-buried in the prefabricated component through the embedded end. The lifting end is connected to the hook. It has a simple structure and is easy to install, and there is no need to open holes on the side formwork on the pier column.
It realizes that concrete can be poured without opening holes, avoids overflow of cement slurry, ensures the apparent quality of concrete, reduces costs, improves work efficiency, and is suitable for prefabricated components of different sizes.
Smart Images
Figure CN222574032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hoisting, in particular to a hoisting pre-embedded device for prefabricated piers of assembled bridges. Background Art
[0002] Prefabricated buildings transfer a large number of on-site operations in traditional construction methods to prefabrication plants. After prefabrication, they are assembled and installed on site through reliable connection methods. This is a trend in the modernization of the construction industry. The lifting points of prefabricated pier columns are usually made of lifting rings made of multiple round steel bends embedded on the sides and tops of the pier columns. However, the lifting rings and the steel bars of the components cross many times, making them difficult to locate during installation. In addition, the lifting rings on the sides of the pier columns require holes in the template, which can easily cause cement slurry to overflow during concrete pouring, resulting in quality defects such as honeycombed surfaces and rotten roots. Therefore, it is urgent to solve this problem.
[0003] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a prefabricated bridge pier hoisting and embedding device, which can be cast without opening holes on the template on the side of the pier, and has a simple structure and is easy to install and use.
[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a prefabricated bridge prefabricated pier lifting and embedding device, comprising: a prefabricated component, a steel hinge wire and a lifting assembly; a steel skeleton supporting the main body is provided in the prefabricated component; the steel hinge wire is set as a U-shaped structure, and the open end of the U-shaped structure is set as an embedded end, which is embedded in the prefabricated component, and the closed end of the U-shape is a lifting end, which is used to connect a hook for lifting construction; the lifting assembly is installed on the steel hinge wire, which is used to connect the steel skeleton in the prefabricated component and increase the stress at the connection between the steel hinge wire and the hook.
[0006] Preferably, the hoisting ends form symmetrically distributed hanging points on the top of the prefabricated component, and each hanging point is composed of at least 4 to 7 steel hinge wires.
[0007] Preferably, the lifting assembly includes a P-type anchor; the P-type anchor is configured as a long strip plate, and a clamping hole is provided on the long strip plate; the end of the embedded end of the steel hinge wire is inserted into the clamping hole, and the long strip plate is connected to the steel skeleton in the prefabricated component.
[0008] Preferably, the hoisting assembly comprises an arc-shaped galvanized iron pipe; the arc-shaped galvanized iron pipe is sleeved on the hoisting end of the steel hinge wire.
[0009] Preferably, the lifting end of the steel hinge wire is set to an arc with a radius of at least 60 mm, and the length of the arc-shaped galvanized iron pipe is at least 40 mm.
[0010] Preferably, the diameter of the steel strand is at least 15 mm.
[0011] Preferably, the length of the embedded end of the steel strand is at least 1 m.
[0012] Preferably, a steel mesh for reinforcement is provided at the connection between the prefabricated component and the lifting end of the steel hinge wire, and the steel mesh is buried in the prefabricated component.
[0013] Preferably, the snap-in holes are distributed in a staggered manner on the long strip plate.
[0014] The beneficial effects of the utility model are embodied in:
[0015] (1) The device provided by the utility model has a light structure and high strength. It only needs to be installed on the top of the pier to meet the lifting requirements of the prefabricated components. It will not collide with the steel skeleton during installation, and there is no need to open holes in the template on the side of the pier, thereby avoiding the overflow of concrete cement slurry and ensuring the apparent quality of the concrete.
[0016] (2) Compared with the conventional lifting ring formed by bending round steel, the device provided by the utility model has greatly reduced costs and improved work efficiency. It can be selected according to the size requirements of different prefabricated components and can also be used as a reference in the lifting of cap beams and prefabricated box beams. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 It is a side view of the internal structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the P-type anchor structure of the utility model.
[0020] Description of reference numerals:
[0021] 10. Prefabricated components; 20. Steel hinge wires; 30. Arc-shaped galvanized iron pipes; 40. P-type anchors. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0023] Example
[0024] See also Figure 1-3 As shown:
[0025] The utility model provides a prefabricated bridge pier hoisting and embedding device, comprising: a prefabricated component 10, a steel hinge wire 20 and a hoisting assembly.
[0026] A steel skeleton supporting the main body is provided in the prefabricated component 10; the steel hinge wire 20 is provided as a U-shaped structure, and the open end of the U-shaped structure is provided as a pre-embedded end, which is pre-embedded in the prefabricated component 10, and the closed end of the U-shaped structure is a hoisting end, which is used to connect a hook for hoisting construction. The hoisting assembly is installed on the steel hinge wire 20, which is used to connect the steel skeleton in the prefabricated component 10 and increase the stress at the connection between the steel hinge wire 20 and the hook.
[0027] The hoisting end forms symmetrically distributed hoisting points at the top of the prefabricated component 10, and each hoisting point is composed of at least 4 to 7 steel hinge wires 20 to ensure that it can withstand more tension during hoisting.
[0028] The hoisting assembly includes a P-type anchor 40 and an arc-shaped galvanized iron pipe 30.
[0029] The P-type anchor 40 is provided in the form of a long strip plate, and a clamping hole 41 is provided on the long strip plate; the end of the embedded end of the steel hinge wire 20 is inserted into the clamping hole 41, and the long strip plate is connected to the steel skeleton in the prefabricated component 10. In actual use, the clamping holes 41 are staggered on the long strip plate, so that when the two ends of the steel hinge wire 20 are inserted into the clamping holes 41, the torsion angle in the length direction of the steel hinge wire 20 can be met, and the torsion force generated by the elastic recovery of the steel hinge wire 20 itself can be eliminated.
[0030] The arc-shaped galvanized iron tube 30 is sleeved on the hoisting end of the steel hinge wire 20.
[0031] The lifting end of the steel hinge wire 20 is set to an arc with a radius of at least 60 mm, and the length of the arc-shaped galvanized iron pipe 30 is at least 40 mm, so as to facilitate lifting.
[0032] The diameter of the steel strand wire 20 is at least 15 mm.
[0033] The length of the embedded end of the steel strand wire 20 is at least 1 m.
[0034] A steel mesh for reinforcement is provided at the connection between the prefabricated component 10 and the lifting end of the steel hinge wire 20. The steel mesh is buried in the prefabricated component 10, thereby preventing cracking during lifting.
[0035] In actual use, the steel hinge wire 20 is bent into a ring shape, and the bent section is extended by a certain straight length and embedded in the prefabricated component 10, that is, the prefabricated pier column, and anchored by a P-type anchor at the bottom of its embedded end. When the prefabricated pier column is horizontally tied with steel bars on the mold, the steel hinge wire 20 is combined in a certain number and symmetrically installed in the gaps between the stirrups on both sides of the component, and then the template is installed.
[0036] In order to maintain the vertical stress state of the pier column and the appearance requirements of the concrete on the side of the pier column, the pedestal is turned over as a whole and adjusted to a vertical state for concrete pouring, so that the steel hinge wire 20 forms a lifting ring that can be used for lifting.
[0037] The specific usage method includes the following steps:
[0038] The weight of the precast pier is calculated according to the amount of steel bars and concrete in the precast pier. With reference to the "Design Specifications for Prefabricated Concrete Bridges" and other relevant specifications and regulations, the maximum lifting weight of a single lifting point is calculated on the premise of meeting the safety factor. Combined with the control stress of the steel hinge wire 20, the number of steel hinge wires required for a single lifting ring and the buried depth of the steel hinge wire are calculated.
[0039] When tying the pier column reinforcement on the mold, the bent steel hinge wire 20 and the P-type anchor 40 are installed together to form a lifting ring. A steel mesh is set below the surface of the pier column at the lifting point for reinforcement to avoid cracking.
[0040] After taking measures to position the steel hinge wires by means of binding, welding and other techniques, pour the pier column concrete. During the pouring process, it is necessary to prevent the vibrator from colliding with the steel hinge wires 20 to cause displacement. After the pouring is completed, maintenance is carried out.
[0041] After the maintenance is completed, the pull-out strength test is carried out. After the test meets the design requirements, it is transported to the site for lifting.
[0042] During hoisting, pass the upper end of the wire rope into the lifting ring made of bent steel hinge wire. According to the actual construction requirements, use appropriate hoisting machinery for hoisting.
[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A prefabricated bridge pier hoisting and embedding device, characterized in that: include: A prefabricated component (10), a steel hinge wire (20) and a lifting assembly; the prefabricated component (10) is provided with a steel skeleton supporting a main body; the steel hinge wire (20) is provided as a U-shaped structure, and the open end of the U-shaped structure is provided as a pre-embedded end, the pre-embedded end is pre-embedded in the prefabricated component (10), and the closed end of the U-shape is a lifting end, and the lifting end is used to connect a lifting hook for lifting construction; the lifting assembly is installed on the steel hinge wire (20) and is used to connect the steel skeleton in the prefabricated component (10) and increase the stress at the connection between the steel hinge wire (20) and the lifting hook.
2. The prefabricated bridge pier hoisting and embedding device according to claim 1 is characterized in that: The hoisting end forms symmetrically distributed hoisting points at the top of the prefabricated component (10), and each hoisting point is formed by at least 4 to 7 strands of steel hinge wires (20).
3. The prefabricated bridge pier hoisting and embedding device according to claim 2 is characterized in that: The lifting assembly comprises a P-type anchor (40); the P-type anchor (40) is configured as a long strip plate, and a clamping hole (41) is provided on the long strip plate; the end of the embedded end of the steel hinge wire (20) is inserted into the clamping hole (41), and the long strip plate is connected to the steel frame in the prefabricated component (10).
4. The prefabricated bridge pier hoisting and embedding device according to claim 3 is characterized in that: The hanging assembly comprises an arc-shaped galvanized iron pipe (30); the arc-shaped galvanized iron pipe (30) is sleeved on the hanging end of the steel hinge wire (20).
5. The prefabricated bridge pier hoisting and embedding device according to claim 3 or 4, characterized in that: The lifting end of the steel hinge wire (20) is set to be an arc with a radius of at least 60 mm, and the length of the arc-shaped galvanized iron pipe (30) is at least 40 mm.
6. The prefabricated bridge pier hoisting and embedding device according to claim 5, characterized in that: The diameter of the steel strand (20) is at least 15 mm.
7. The prefabricated bridge pier hoisting and embedding device according to claim 6, characterized in that: The length of the embedded end of the steel hinge wire (20) is at least 1 m.
8. The prefabricated bridge pier hoisting and embedding device according to claim 7, characterized in that: A steel mesh for reinforcement is provided at the connection between the prefabricated component (10) and the lifting end of the steel hinge wire (20), and the steel mesh is buried in the prefabricated component (10).
9. The prefabricated bridge pier hoisting and embedding device according to claim 3, characterized in that: The clamping holes (41) are distributed in a staggered manner on the long strip plate.