A continuous beam prestress tensioning hanger

Abstract

The utility model relates to bridge prestress tension construction technology field, concretely discloses a continuous beam prestress tension hanger, including hanger main part, the hanger main part includes stand and cantilever, the cantilever is connected with stand, the cantilever is provided with the suspension component of being able to hang tension equipment, the continuous beam prestress tension hanger still includes the embedded part embedded in the beam body concrete structure, one end of embedded part is provided with screw thread structure, be provided with the screw thread structure in the stand one end of pull rod, pull rod, pull rod passes through the top of stand and is fixed through the nut, the other end of pull rod also is provided with screw thread structure, be provided with the screw sleeve between pull rod and embedded part for the fastening connection of pull rod and embedded part. The hanger of the utility model forms the stable hanger structure through single stand and pull rod, embedded part, guarantees basic hoisting function, and simple structure, convenient to dismount simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to a prestressed tensioning hanger for continuous beams. Background Technology

[0002] Prestressed tensioning of continuous beams refers to a construction technique in bridge structures that improves their load-bearing capacity and bending resistance by applying prestress to the concrete beam. Specifically, prestressed tensioning involves using tensioning equipment (such as jacks) to stretch steel strands or bundles, generating prestress, which is then transferred to the concrete. This creates a prestressed state within the concrete, enabling it to better resist tensile stress under external loads, reducing crack formation, and improving the overall stability and durability of the structure.

[0003] During tensioning, due to the large number of holes to be drilled, the position of the jacks needs to be constantly switched to stretch the steel strands or bundles at different holes. Existing technology provides various types of hangers to suspend the jacks, facilitating the switching of jack positions. Common hanger types include the following:

[0004] Type 1 hanger: diamond-shaped hanger. The hanger has high structural strength and can meet the weighing requirements of the jack. However, it requires at least 4 sets of embedded parts to fix the hanger. The structure is complicated, and the position of the jack is not convenient to switch with this type of hanger.

[0005] The second type of hanger is the Z-shaped hanger, which is usually equipped with rollers for easy movement. However, a counterweight needs to be installed on the hanger to ensure that it does not tip over. But the installation of the counterweight is relatively troublesome and inconvenient. Utility Model Content

[0006] This utility model addresses the problems of relatively complex hanger structures and inconvenient installation in existing technologies by providing a continuous beam prestressed tensioning hanger with a simple structure that can be quickly installed and used.

[0007] This utility model is achieved through the following technical solution:

[0008] A continuous beam prestressed tensioning hanger includes a hanger body, which includes a column and a cantilever. The cantilever is connected to the column, and a suspension component capable of suspending tensioning equipment is provided on the cantilever. The continuous beam prestressed tensioning hanger also includes an embedded part pre-embedded in the concrete structure of the beam. One end of the embedded part is provided with a threaded structure. A tie rod is provided in the column, one end of which is provided with a threaded structure. The tie rod passes through the top of the column and is fixed by a nut. The other end of the tie rod is also provided with a threaded structure. A threaded sleeve is provided between the tie rod and the embedded part for fastening the tie rod to the embedded part.

[0009] Optionally, the suspension member is provided with rollers that can roll along the cantilever, allowing the suspension member to move on the cantilever.

[0010] Optionally, the end of the cantilever is further provided with an end baffle to restrict the suspension component from sliding out of the cantilever.

[0011] Optionally, the column is provided with a first inner ring component, and the end of the cantilever is provided with a first outer ring component. The cantilever is sleeved on the first inner ring component of the column through the first outer ring component, so that the cantilever can rotate around the column.

[0012] Optionally, the column is provided with a second inner ring member, the cantilever is connected with a diagonal brace member, the end of the diagonal brace member is provided with a second outer ring member, and the second outer ring member is sleeved on the second inner ring member of the column to achieve a rotatable connection.

[0013] Optionally, both the tie rod and the embedded part are made of threaded steel.

[0014] Optionally, a leveling steel plate is also provided at the bottom of the column.

[0015] The technical solution of this utility model has at least the following beneficial effects:

[0016] This utility model of a continuous beam prestressed tensioning hanger achieves tensioning and fixing of the column by inserting tie rods through the column and connecting them to the embedded parts in the concrete structure of the beam. The overall strength is borne by the column, the column and the embedded parts together, ensuring the basic strength requirements are met. The structure is simple. At the same time, the column and the embedded parts can be quickly installed and disassembled through threaded sleeves, making it convenient to use. Attached Figure Description

[0017] Figure 1 This is a front view of the continuous beam prestressed tensioning hanger of this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of part A;

[0019] Figure 3 for Figure 1 BB-direction sectional view.

[0020] Figure label:

[0021] 1-Embedded part, 2-Threaded sleeve, 3-Tie rod, 41-Column, 42-Cantilever, 421-End baffle, 43-Diagonal brace, 44-Suspension component, 451-First outer ring component, 452-First inner ring component, 461-Second outer ring component, 462-Second inner ring component, 47-Roller, 6-Leveling steel plate, 7-Jack. Detailed Implementation

[0022] Reference Figures 1-3 The continuous beam prestressed tensioning hanger of this utility model includes a hanger body, a tie rod 3 and an embedded part 1. The hanger body includes a column 41 and a cantilever 42. The cantilever 42 is connected to the column 41. A suspension component 44 capable of suspending the tensioning equipment is provided on the cantilever 42. The tensioning equipment is usually a jack 7. The jack 7 is suspended on the suspension component 44 by an electric hoist (omitted), thereby realizing the suspension of the jack 7.

[0023] During the beam construction, the embedded part 1 is embedded in the concrete. The embedded part 1 is preferably made of high-strength threaded steel. One end of the embedded part 1 is embedded in the concrete, and the other end is provided with a threaded structure, which can be used to achieve a tight connection with the tie rod 3 in the main body of the hanger.

[0024] The tie rod 3 is preferably made of high-strength threaded steel. The tie rod 3 passes through the column 41, with one end having a threaded structure. The tie rod 3 passes through the top of the column 41 and is secured with a nut. The other end of the tie rod 3 also has a threaded structure, which connects it to the embedded part 1. Specifically, a threaded sleeve 2 with a double-threaded structure is provided between the tie rod 3 and the embedded part 1. The tie rod 3 and the embedded part 1 are threadedly connected to the threaded sleeve 2 through their respective threaded structures. Rotating the threaded sleeve 2 secures the tie rod 3 to the embedded part 1. After connecting the tie rod 3 to the embedded part 1, the column 41 is fixed to the beam. This fixing method simplifies the main body of the hanger, eliminating the need for complex structures and facilitating storage, installation, and use. The connection method of the threaded sleeve 2 also means that the embedded part 1 does not need to be designed to be too long. It only needs to be exposed to a certain length so that it can be connected to the tie rod 3. At the same time, when it is no longer needed, the embedded part 1 can be cut off without wasting long materials.

[0025] The column 41 can be a hollow tube column structure, with the tie rod 3 passing through the column. At the position where the threaded sleeve 2 needs to be rotated, a hole is reserved or an openable window is opened to realize the rotation operation of the threaded sleeve 2.

[0026] Since the stretching of the jack 7 requires multiple operations at different hole positions, it is necessary to constantly switch positions. To facilitate position switching, the column 41 of this utility model is provided with a first inner ring component 452. The first inner ring component 452 is made of steel and can be fixed to the column 41 by welding. The end of the cantilever 42 is provided with a first outer ring component 451. The first outer ring component 451 is welded to the end of the cantilever 42. The cantilever 42 is sleeved on the first inner ring component 452 of the column 41 through the first outer ring component 451, so that the cantilever 42 can rotate around the column 41. When the cantilever 42 rotates around the column 41, the suspended jack 7 can be angled in the plane direction to adapt to the position switching of different hole positions on a certain plane.

[0027] Furthermore, the suspension member 44 is equipped with rollers 47, which can roll along the cantilever 42, allowing the suspension member 44 to move along the cantilever 42. In this embodiment, the cantilever 42 adopts an I-beam structure, while the suspension member 44 adopts a rectangular frame structure. Rollers 47 are provided inside the rectangular frame, allowing the rollers 47 to act on the bottom plate of the I-beam, thus enabling the suspension member 44 to move along the cantilever 42. This structure, combined with the design of the cantilever 42 rotating around the column 41, and the use of an electric hoist for lifting, allows the jack 7 to stop at any position in space, enabling the stretching of steel strands at different hole positions.

[0028] An end baffle 421 is also provided at the end of the cantilever 42 to restrict the suspension component 44 from sliding out of the cantilever 42.

[0029] To improve the connection strength between the cantilever 42 and the column 41, a second inner ring member 462 is provided on the column 41, and the second inner ring member 462 is welded to the column 41. A diagonal brace member 43 is connected to the cantilever 42. The diagonal brace member 43 is made of steel, and a second outer ring member 461 is provided at the end of the diagonal brace member 43. The connection is also welded. The second outer ring member 461 is sleeved on the second inner ring member 462 of the column 41 to achieve a rotatable connection. Based on the same rotatable structure design, when the cantilever 42 rotates around the column 41, the diagonal brace member 43 can also rotate. Relying on the diagonal brace member 43, the support strength of the cantilever 42 is improved, and the problem of the connection breaking due to excessive bending moment is avoided.

[0030] A leveling steel plate 6 is also provided at the bottom of the column 41. The leveling steel plate 6 is used to insert into the gap between the bottom of the column 41 and the beam to adjust the column 41 and ensure that the column 41 can maintain a vertical state.

[0031] In this utility model, the installation of the entire hanger body is completed by using a single column 41 structure, combined with the tie rod 3 and the anchor structure of the embedded part 1. The structure is simple, safe and convenient, and can realize the suspension of the jack 7.

Claims

1. A prestressed tensioning hanger for a continuous beam, comprising a hanger body, the hanger body including a column and a cantilever, the cantilever being connected to the column, and a suspension component capable of suspending tensioning equipment provided on the cantilever, characterized in that... The continuous beam prestressed tensioning hanger also includes embedded parts pre-embedded in the concrete structure of the beam. One end of the embedded part is provided with a threaded structure. A tie rod is provided in the column. One end of the tie rod is provided with a threaded structure. The tie rod passes through the top of the column and is fixed by a nut. The other end of the tie rod is also provided with a threaded structure. A threaded sleeve is provided between the tie rod and the embedded part for fastening the tie rod to the embedded part.

2. The continuous beam prestressed tensioning hanger according to claim 1, characterized in that, The suspension member is equipped with rollers that can roll along the cantilever, allowing the suspension member to move on the cantilever.

3. The continuous beam prestressed tensioning hanger according to claim 2, characterized in that, The end of the cantilever is also provided with an end baffle to prevent the suspension component from sliding out of the cantilever.

4. The continuous beam prestressed tensioning hanger according to claim 1, characterized in that, The column is provided with a first inner ring component, and the end of the cantilever is provided with a first outer ring component. The cantilever is sleeved on the first inner ring component of the column through the first outer ring component, so that the cantilever can rotate around the column.

5. The continuous beam prestressed tensioning hanger according to claim 4, characterized in that, The column is provided with a second inner ring component, the cantilever is connected with a diagonal brace component, the end of the diagonal brace component is provided with a second outer ring component, and the second outer ring component is sleeved on the second inner ring component of the column to achieve a rotatable connection.

6. The continuous beam prestressed tensioning hanger according to claim 1, characterized in that, Both the tie rod and the embedded part are made of threaded steel.

7. The continuous beam prestressed tensioning hanger according to claim 1, characterized in that, The bottom of the column is also equipped with a leveling steel plate.

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