Fabricated T-shaped beam reinforcing structure

Abstract

The utility model discloses an assembly type T-shaped beam reinforcing structure, which belongs to the technical field of bridge maintenance, and comprises a T-shaped beam, and a steel reinforcement framework and a U-shaped steel plate which are sequentially sleeved at the bottom of the T-shaped beam, the steel reinforcement framework comprises annular steel reinforcement units uniformly distributed along the length direction of the T-shaped beam, and connecting steel reinforcements used for connecting the annular steel reinforcement units, the annular steel bar unit is wound around the bottom of the T-shaped beam and penetrates through the second face and the third face of the T-shaped beam, and concrete is arranged between the U-shaped steel plate and the T-shaped beam. The T-shaped beam is simple in structure and convenient to construct, the stress state of the T-shaped beam is improved, and the bearing capacity and durability of the bridge are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge maintenance, and in particular relates to an assembled T-beam reinforcement structure. Background Art

[0002] As time passes and traffic loads continue to increase, many bridges have gradually aged and deteriorated, including a large number of bridges with T-beam structures. The existence of dilapidated and dangerous bridges poses a serious threat to traffic safety. On the one hand, structural aging may lead to a decline in the bridge's load-bearing capacity, making it unable to meet the growing demand for traffic. For example, the concrete of the T-beam may crack and peel, and the steel bars may lose their original strength due to corrosion, thus affecting the overall stability of the bridge. On the other hand, the reduced durability of dilapidated and dangerous bridges makes them more susceptible to natural environmental factors such as rainwater erosion and freeze-thaw cycles, further accelerating the process of bridge deterioration.

[0003] In the projects where old and dangerous bridges can be renovated, for bridges located in major thoroughfares and in ecological protection zones, in order to ensure traffic and protect the ecology, it is impossible to interrupt traffic or add temporary access roads, and the construction is difficult. For this reason, we propose an assembled T-beam reinforcement structure. Utility Model Content

[0004] The purpose of the present invention is to provide an assembled T-beam reinforcement structure, aiming to solve the problems existing in the prior art in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A prefabricated T-beam reinforcement structure includes a T-beam, and a steel frame and a U-shaped steel plate sequentially sleeved on the bottom of the T-beam. The steel frame includes annular steel bar units evenly distributed along the length of the T-beam, and connecting steel bars for connecting the annular steel bar units. The annular steel bar units are arranged around the bottom of the T-beam and pass through the second and third surfaces of the T-beam. Concrete is provided between the U-shaped steel plate and the T-beam.

[0007] Furthermore, shear bolts are evenly distributed on the inner side of the U-shaped steel plate.

[0008] Furthermore, the annular steel bar unit is provided with a bent portion, and the bent portion is used to accommodate the aligned shear bolts.

[0009] Furthermore, a positioning plate is provided at one end of the length direction of the U-shaped steel plate, and a positioning slot is provided at the other end. The positioning plates at the ends of adjacent U-shaped steel plates are plugged into the positioning slots to accurately position the ends of adjacent U-shaped steel plates.

[0010] Furthermore, the positioning slot includes a receiving groove, the notch of the receiving groove is provided with a bucket-shaped guide portion, and the guide portion is used to guide the positioning plate to be inserted into the receiving groove.

[0011] Furthermore, the first surface, the second surface and the third surface of the T-beam are roughened to rough surfaces.

[0012] Furthermore, the U-shaped steel plate is made of weathering steel plate.

[0013] Furthermore, the concrete is UHPC ultra-high performance concrete.

[0014] Compared with the shortcomings and deficiencies of the prior art, the present invention has the following beneficial effects.

[0015] 1. The utility model provides an assembled T-beam reinforcement structure, in which a steel frame and a U-shaped steel plate are sequentially arranged at the bottom of the T-beam, and concrete is poured between the U-shaped steel plate and the T-beam, wherein the steel frame adopts a combined structure of annular steel bar units and connecting steel bars, the annular steel bar units pass through the second and third sides of the T-beam and are arranged around the bottom of the T-beam, a plurality of annular steel bar units are evenly arranged along the length direction of the T-beam, and the connecting steel bars connect the plurality of annular steel bar units to form a steel frame, and the combined reinforcement structure of the steel frame, concrete and U-shaped steel plate has a simple structure and is easy to construct, which is conducive to improving the stress state of the T-beam and improving the bearing capacity and durability of the bridge.

[0016] 2. In this prefabricated T-beam reinforcement structure, shear studs are set on the inside of the U-shaped steel plate to facilitate the rapid assembly of the U-shaped steel plate. The gap between the U-shaped steel plate and the T-beam is uniform, which is conducive to concrete pouring and has high construction consistency. The U-shaped steel plate is made of weathering steel plate and combined with UHPC ultra-high performance concrete, which is conducive to further improving the overall structural strength of the reinforced structure.

[0017] 3. In the assembled T-beam reinforcement structure, the annular steel bar unit is provided with a bent portion aligned with the shear studs, which provides temporary support for the U-shaped steel plate when assembling it, and is also beneficial to improving the stability of the overall reinforcement structure. The ends of the U-shaped steel plate are quickly positioned and connected through positioning pieces, eliminating the need for support at the joints of the U-shaped steel plate, facilitating welding at the joints and improving construction convenience and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of an assembled T-beam reinforcement structure in the utility model.

[0019] Figure 2 It is a structural schematic diagram of the shear bolts arranged inside the U-shaped steel plate in the utility model.

[0020] Figure 3It is a structural schematic diagram of a ring-shaped steel bar unit provided with a bending portion in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the positioning plate and the positioning slot in the utility model.

[0022] In the figure: 1-T-beam; 2-steel skeleton; 3-connecting steel bars; 4-annular steel bar unit; 5-U-shaped steel plate; 6-concrete; 7-through hole; 8-first surface; 9-second surface; 10-third surface; 11-shear bolt; 12-bend; 13-positioning plate; 14-positioning slot; 15-accommodating groove; 16-guide portion. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Reference Figure 1 An assembled T-beam reinforcement structure includes a T-beam 1, a steel frame 2 and a U-shaped steel plate 5. The steel frame 2 and the U-shaped steel plate 5 are sequentially sleeved on the outside of the bottom of the T-beam 1, and concrete 6 is poured between the U-shaped steel plate 5 and the T-beam 1 to tightly connect the T-beam 1, the steel frame 2 and the U-shaped steel plate 5 to achieve a reinforcement effect on the T-beam 1.

[0025] The bottom end of the T-beam 1 has a downward first surface 8, a second surface 9 and a third surface 10 located on opposite sides of the first surface 8, and the steel skeleton 2 includes annular steel bar units 4 and connecting steel bars 3. A plurality of annular steel bar units 4 are evenly distributed along the length direction of the T-beam 1, and the connecting steel bars 3 are arranged below the first surface 8 along the length direction of the T-beam 1. The connecting steel bars 3 are used to connect the various annular steel bar units 4 to form a steel skeleton 2, wherein a through hole 7 is provided between the second surface 9 and the third surface 10 of the T-beam 1, and part of the steel bars of the annular steel bar unit 4 pass through the through hole 7, and the remaining steel bars are respectively arranged around the first surface 8, the second surface 9 and the third surface 10.

[0026] The bottom dimensions of the T-beam 1 are measured, and the U-shaped steel plate 5 is prefabricated in the factory based on the measured data. The U-shaped steel plate 5 is composed of steel plates aligned with the first side 8, the second side 9, and the third side 10, respectively. The U-shaped steel plate 5 is made of weathering steel plate, i.e., atmospheric corrosion-resistant steel, which is characterized by strong corrosion resistance and high strength.

[0027] In one embodiment, the concrete 6 is made of UHPC concrete. UHPC (Ultra-High Performance Concrete) is ultra-high performance concrete, which has ultra-high strength, high durability and good workability, and is conducive to further improving the overall stability of the reinforced structure.

[0028] In one embodiment, referring to Figure 2 Shear studs 11 are evenly distributed on the inner side of the U-shaped steel plate 5. The shear studs 11 are perpendicular to the inner surface of the U-shaped steel plate 5. When the U-shaped steel plate 5 is installed, the ends of the shear studs 11 abut against the surface of the T-beam 1, so that the surfaces of the U-shaped steel plate 5 and the T-beam 1 are evenly left empty, which facilitates the quick and accurate alignment of the U-shaped steel plate 5 and the T-beam 1. At the same time, the shear studs 11 are beneficial to increase the contact area with the concrete 6 and improve the connection stability of the U-shaped steel plate 5 and the T-beam 1.

[0029] In one embodiment, referring to Figure 3 The annular reinforcement unit 4 is provided with a curved portion 12 aligned with the shear studs 11. The opening of the curved portion 12 faces the length direction of the T-beam 1 and is used to accommodate the shear studs 11. When assembling the U-shaped steel plate 5, the U-shaped steel plate 5 is lifted to a certain height and then moved along the length direction of the T-beam 1, so that the shear studs 11 enter the aligned curved portion 12. The reinforcement skeleton 2 forms a temporary support for the U-shaped steel plate 5, facilitating subsequent construction and improving construction convenience.

[0030] In one embodiment, referring to Figure 4 , a positioning piece is provided at the end of the U-shaped steel plate 5 in the length direction, and the positioning piece is used to quickly align and position the ends of adjacent U-shaped steel plates 5 to facilitate subsequent welding. Specifically, the positioning piece includes a positioning slot 14 and a positioning plate 13, and the positioning slot 14 is plugged into the positioning plate 13. A positioning slot 14 is provided at one end of the U-shaped steel plate 5 in the length direction, and a positioning plate 13 is provided at the other end, wherein the positioning slot 14 includes a receiving groove 15 and a guide portion 16, and the guide portion 16 is a bucket-shaped structure, and the guide portion 16 is provided at the notch of the receiving groove 15. When the U-shaped steel plate 5 is assembled, the positioning plate 13 on one side moves toward the aligned positioning slot 14, and the end of the positioning plate 13 enters the receiving groove 15 through the guide portion 16, so that the ends of the adjacent U-shaped steel plates 5 on both sides are accurately aligned. There is no need to set a support structure at the bottom of the joint during welding, which greatly improves the convenience of operation and helps to improve construction efficiency.

[0031] In one embodiment, the first surface 8, the second surface 9 and the third surface 10 of the T-beam 1 respectively aligned with the U-shaped steel plate 5 are roughened so that the first surface 8, the second surface 9 and the third surface 10 are rough surfaces, so as to increase the contact area between the T-beam 1 and the concrete 6, which is beneficial to increase the stability of the connection.

[0032] During the T-beam reinforcement process, first, a through hole 7 is provided on the second side 9 and the third side 10 at the bottom of the T-beam 1, and the first side 8, the second side 9 and the third side 10 at the bottom of the T-beam 1 are roughened. Then, one end of the circular steel bar unit 4 is passed through the through hole 7, and the other end is wrapped around the first side 8, the second side 9 and the third side 10 of the T-beam 1 and then the ends are welded. A plurality of circular steel bar units 4 are evenly arranged along the length direction of the T-beam 1, and connecting steel bars 3 are provided below the first side 8 along the length direction of the T-beam 1. The connecting steel bars 3 connect the various circular steel bar units 4 to form The steel skeleton 2 is then assembled with the U-shaped steel plate 5, which is sleeved on the outside of the steel skeleton 2, wherein the shear studs 11 are located in the gaps between the adjacent annular steel bar units 4, and the U-shaped steel plate 5 is moved along the length direction of the T-beam 1 so that the shear studs 11 penetrate into the curved portion 12 of the aligned annular steel bar unit 4. The ends of the adjacent U-shaped steel plates 5 are precisely positioned and aligned by positioning pieces, and the joints of the U-shaped steel plates 5 are welded. Finally, UHPC ultra-high performance concrete is poured into the gaps between the U-shaped steel plate 5 and the T-beam 1 to form a reinforcement structure for the T-beam 1.

[0033] 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 and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled T-beam reinforcement structure, characterized in that: The invention comprises a T-beam (1), and a steel frame (2) and a U-shaped steel plate (5) which are sequentially sleeved on the bottom of the T-beam (1), wherein the steel frame (2) comprises annular steel bar units (4) uniformly arranged along the length direction of the T-beam (1), and connecting steel bars (3) for connecting the annular steel bar units (4), wherein the annular steel bar units (4) are arranged around the bottom of the T-beam (1) and pass through the second surface (9) and the third surface (10) of the T-beam (1), and concrete (6) is provided between the U-shaped steel plate (5) and the T-beam (1).

2. The assembled T-beam reinforcement structure according to claim 1, characterized in that: Shear bolts (11) are evenly distributed on the inner side of the U-shaped steel plate (5).

3. The assembled T-beam reinforcement structure according to claim 2, characterized in that: The annular steel bar unit (4) is provided with a bent portion (12), and the bent portion (12) is used to accommodate the aligned shear bolts (11).

4. The assembled T-beam reinforcement structure according to claim 1, characterized in that: A positioning plate (13) is provided at one end of the length direction of the U-shaped steel plate (5), and a positioning slot (14) is provided at the other end. The positioning plates (13) at the ends of adjacent U-shaped steel plates (5) are plugged into and fitted into the positioning slots (14).

5. The assembled T-beam reinforcement structure according to claim 4, characterized in that: The positioning slot (14) comprises a receiving slot (15), the slot opening of the receiving slot (15) is provided with a bucket-shaped guide portion (16), and the guide portion (16) is used to guide the positioning plate (13) to be inserted into the receiving slot (15).

6. The assembled T-beam reinforcement structure according to claim 1, characterized in that: The first surface (8), the second surface (9) and the third surface (10) of the T-beam (1) are roughened to a rough surface.

7. The assembled T-beam reinforcement structure according to any one of claims 1 to 6, characterized in that: The U-shaped steel plate (5) is made of weathering steel plate.

8. The assembled T-beam reinforcement structure according to any one of claims 1 to 6, characterized in that: The concrete (6) adopts UHPC ultra-high performance concrete.

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