Prefabricated prestressed steel reinforced concrete open-web truss

Abstract

The utility model discloses a prefabricated prestressed steel reinforced concrete open-web truss which comprises a reinforcement cage, corrugated pipes are placed in the reinforcement cage, steel strands are arranged in the corrugated pipes in a sleeved mode, an I-shaped base is arranged on the top of the reinforcement cage in a sleeved mode, concrete is poured on the surface of the reinforcement cage, and the steel strands are arranged on the I-shaped base in a sleeved mode. An I-shaped supporting rod is arranged at the top of the I-shaped base, an upper mounting plate is connected to the top of the I-shaped supporting rod in a bolting mode, an I-shaped cross beam is arranged at the top of the upper mounting plate, a user uses a jack to stretch and draw a steel strand, and then the two ends of the steel strand are limited through cooperation of clamping pieces and anchor plates; according to the device, prestress can be effectively and conveniently applied to the device, the I-shaped base is pre-embedded into a reinforcement cage and concrete, so that the pressure resistance of the device can be effectively improved, and the supporting stability of the device can be effectively improved by arranging the I-shaped supporting rods and the I-shaped cross beams.

Description

Technical Field

[0001] The utility model belongs to the technical field of trusses, in particular to a prefabricated prestressed steel concrete hollow truss. Background Art

[0002] Prefabricated steel-concrete trusses also have significant advantages in terms of material conservation and simplified construction. By using steel-reinforced concrete components as the steel skeleton of the truss, steel can be effectively saved.

[0003] At present, the Chinese utility model with the announcement number CN211590677U discloses a prefabricated steel truss concrete composite structure assembled composite beam, including an assembled steel truss and an anti-crack steel cage. The assembled steel truss includes a steel skeleton upper crossbeam, a steel skeleton lower crossbeam I and a steel skeleton lower crossbeam II. The ends of the steel skeleton upper crossbeam and the steel skeleton lower crossbeam I are connected as a whole through a connecting plate I. A number of steel skeleton support crosses and a number of connecting plates II are connected between the steel skeleton upper crossbeam and the steel skeleton lower crossbeam I. The assembled steel truss is installed in the anti-crack steel cage, and the assembled steel truss and the anti-crack steel cage are formed into an integrated structure through concrete. The utility model can reduce pollution and construction period at the construction site, reduce the impact of construction period and quality caused by outdoor climate changes, and can be recycled and reused through a variety of construction techniques.

[0004] However, the existing prefabricated steel-concrete trusses cannot effectively apply prestress to them, and at the same time cannot effectively improve the stability of their support. In order to solve the above problems, we provide prefabricated prestressed steel-concrete hollow trusses. Utility Model Content

[0005] The purpose of the present invention is to provide a prefabricated prestressed steel-concrete hollow truss to solve the problems raised by the above-mentioned background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: prefabricated prestressed steel concrete hollow truss, including a steel cage, a corrugated pipe is placed inside the steel cage, the interior of the corrugated pipe is sleeved with steel strands, the top of the steel cage is sleeved with an I-shaped base, the surface of the steel cage is poured with concrete, the top of the I-shaped base is provided with an I-shaped support rod, the top of the I-shaped support rod is bolted to an upper mounting plate, the top of the upper mounting plate is provided with an I-shaped crossbeam, and the bottom of the I-shaped crossbeam is sleeved with mounting bolts.

[0007] The above technical solution is adopted: the user uses a jack to tension the steel strand, and then limits the two ends of the steel strand through the cooperation of the clip and the anchor plate, so as to effectively facilitate the application of prestress to the device. The device can effectively improve the compressive resistance of the device by pre-embedding the I-beam base into the interior of the steel cage and concrete, and can effectively improve the support stability of the device by setting the I-beam support rod and I-beam crossbeam.

[0008] The present invention is further configured such that the surface of the mounting bolt is sleeved with the upper mounting plate, and the surface of the mounting bolt is threadedly connected with a mounting nut.

[0009] By adopting the above technical solution, the I-beam can be effectively installed by providing mounting nuts and mounting bolts.

[0010] The utility model is further configured such that anchor plates are bolted on both sides of the concrete, a clip is sleeved on one side of the anchor plate, and the interior of the clip is sleeved with the steel strand.

[0011] By adopting the above technical solution, the steel strands can be effectively limited by arranging anchor plates and clips.

[0012] The present invention is further configured such that a lower mounting plate is bolted to the bottom of the I-shaped support rod, reinforcement plates are bolted to both sides of the front and back sides of the I-shaped support rod, and the bottom of the reinforcement plate is bolted to the lower mounting plate.

[0013] By adopting the above technical solution, the lower mounting plate can be effectively reinforced by providing a reinforcement plate.

[0014] The utility model is further configured such that a fixing bolt is sleeved inside the I-shaped base, and a surface of the fixing bolt is sleeved with the lower mounting plate.

[0015] By adopting the above technical solution, the I-shaped support rod can be effectively installed by setting the fixing bolts.

[0016] The present invention is further configured such that a fixing nut is threadedly connected to the surface of the fixing bolt.

[0017] By adopting the above technical solution, by providing a fixing nut, it can be effectively used in conjunction with the fixing bolt.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. The user uses a jack to tension the steel strand, and then limits the ends of the steel strand through the cooperation of the clip and anchor plate, so as to effectively apply prestress to the device;

[0020] 2. The device can effectively improve the compressive resistance of the device by pre-embedding the I-shaped base into the interior of the steel cage and concrete, and can effectively improve the support stability of the device by setting the I-shaped support rod and I-shaped crossbeam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0022] Figure 2 It is an exploded schematic diagram of the utility model structure.

[0023] Figure numerals: 1. Steel cage; 2. Corrugated pipe; 3. Steel strand; 4. I-beam base; 5. Concrete; 6. I-beam support rod; 7. Upper mounting plate; 8. I-beam crossbeam; 9. Mounting bolt; 10. Mounting nut; 11. Anchor plate; 12. Clip; 13. Lower mounting plate; 14. Reinforcement plate; 15. Fixing bolt; 16. Fixing nut. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1:

[0026] refer to Figure 1 and Figure 2 The prefabricated prestressed steel-concrete hollow truss includes a steel cage 1, a corrugated pipe 2 is placed inside the steel cage 1, a steel strand 3 is sleeved inside the corrugated pipe 2, an I-shaped base 4 is sleeved on the top of the steel cage 1, and concrete 5 is poured on the surface of the steel cage 1. The user uses a jack to tension the steel strand 3, and then limits the two ends of the steel strand 3 through the cooperation of the clip 12 and the anchor plate 11, so that prestress can be effectively applied to the device.

[0027] refer to Figure 2 The surface of the mounting bolt 9 is sleeved with the upper mounting plate 7, and the surface of the mounting bolt 9 is threadedly connected with a mounting nut 10. By setting the mounting nut 10 and the mounting bolt 9, the I-beam 8 can be effectively installed.

[0028] refer to Figure 2 Anchor plates 11 are bolted to both sides of the concrete 5, and a clip 12 is sleeved on one side of the anchor plate 11. The interior of the clip 12 is sleeved with the steel strand 3. By setting the anchor plate 11 and the clip 12, the steel strand 3 can be effectively limited.

[0029] refer to Figure 2 The bottom of the I-shaped support rod 6 is bolted with a lower mounting plate 13, and both sides of the front and back of the I-shaped support rod 6 are bolted with reinforcement plates 14. The bottom of the reinforcement plate 14 is bolted to the lower mounting plate 13. By setting the reinforcement plate 14, the lower mounting plate 13 can be effectively reinforced.

[0030] Brief description of the usage process: The user uses a jack to tension the steel strand 3, and then limits the two ends of the steel strand 3 through the cooperation of the clip 12 and the anchor plate 11, thereby effectively and conveniently applying prestress to the device.

[0031] Example 2:

[0032] refer to Figure 1 and Figure 2 An I-shaped support rod 6 is provided on the top of the I-shaped base 4, an upper mounting plate 7 is bolted to the top of the I-shaped support rod 6, an I-shaped crossbeam 8 is provided on the top of the upper mounting plate 7, and a mounting bolt 9 is sleeved on the bottom of the I-shaped crossbeam 8. The device can effectively improve the compressive resistance of the device by pre-embedding the I-shaped base 4 into the interior of the steel cage 1 and the concrete 5, and can effectively improve the support stability of the device by arranging the I-shaped support rod 6 and the I-shaped crossbeam 8.

[0033] refer to Figure 2 The interior of the I-shaped base 4 is provided with a fixing bolt 15, and the surface of the fixing bolt 15 is sleeved with the lower mounting plate 13. By providing the fixing bolt 15, the I-shaped support rod 6 can be effectively installed.

[0034] refer to Figure 2 The surface of the fixing bolt 15 is threadedly connected with a fixing nut 16. By providing the fixing nut 16, it can be effectively used in conjunction with the fixing bolt 15.

[0035] Brief description of the usage process: The device can effectively improve the compression resistance of the device by pre-embedding the I-shaped base 4 into the interior of the steel cage 1 and the concrete 5, and can effectively improve the support stability of the device by setting the I-shaped support rod 6 and the I-shaped crossbeam 8.

[0036] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A prefabricated prestressed steel-concrete hollow truss, comprising a steel cage (1), characterized in that: A corrugated pipe (2) is placed inside the steel cage (1), a steel strand (3) is sleeved inside the corrugated pipe (2), an I-shaped base (4) is sleeved on the top of the steel cage (1), concrete (5) is poured on the surface of the steel cage (1), an I-shaped support rod (6) is provided on the top of the I-shaped support rod (6), an upper mounting plate (7) is bolted to the top of the I-shaped support rod (6), an I-shaped crossbeam (8) is provided on the top of the upper mounting plate (7), and a mounting bolt (9) is sleeved on the bottom of the I-shaped crossbeam (8).

2. The prefabricated prestressed steel-concrete hollow truss according to claim 1, characterized in that: The surface of the mounting bolt (9) is sleeved with the upper mounting plate (7), and the surface of the mounting bolt (9) is threadedly connected with a mounting nut (10).

3. The prefabricated prestressed steel-concrete hollow truss according to claim 1, characterized in that: Anchor plates (11) are bolted to both sides of the concrete (5), a clip (12) is sleeved on one side of the anchor plate (11), and the interior of the clip (12) is sleeved with the steel strand (3).

4. The prefabricated prestressed steel-concrete hollow truss according to claim 1, characterized in that: The bottom of the I-shaped support rod (6) is bolted to a lower mounting plate (13), and both sides of the front and back of the I-shaped support rod (6) are bolted to reinforcement plates (14), and the bottom of the reinforcement plate (14) is bolted to the lower mounting plate (13).

5. The prefabricated prestressed steel-concrete hollow truss according to claim 4, characterized in that: A fixing bolt (15) is sleeved inside the I-shaped base (4), and a surface of the fixing bolt (15) is sleeved with the lower mounting plate (13).

6. The prefabricated prestressed steel-concrete hollow truss according to claim 5, characterized in that: The surface of the fixing bolt (15) is threadedly connected with a fixing nut (16).

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