Temporary assembly type steel trestle structure on structural surface

Abstract

The temporary assembly type steel trestle structure on the structural surface comprises a plurality of main beams, a plurality of secondary beams and a fixing assembly, the main beams are fixedly connected with an external building through the fixing assembly, the two main beams are connected through first bolts, the main beams and the secondary beams are also connected through first bolts, and the main beams and the secondary beams are connected through second bolts. The multiple main beams and the multiple secondary beams are combined to form a beam-slab structure, a surface layer steel plate is laid on the top of the beam-slab structure, the fixing assembly comprises a steel base plate, the steel base plate is arranged on the top of an external building, a second bolt is fixedly arranged on the top of the external building, the second bolt penetrates through the steel base plate and then is in threaded connection with a nut, and the main beams are fixedly connected with the steel base plate through connecting pieces. The problems that in the prior art, a trestle is directly erected on the structural face of a building, and in the using process of the trestle, the trestle transmits force to the structural face of the building, so that the structural face is damaged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated trestles, in particular to a temporary prefabricated steel trestle structure on a structural surface. Background Art

[0002] During the construction of building structures, sometimes it is necessary to carry out heavy lifting operations on the structural surface of an already completed building. If a crane is simply driven onto the structural surface of the building, it is extremely easy to cause damage to the structural surface, which will have an adverse impact on the stability and service life of the entire building. Therefore, in order to protect the integrity of the structural surface and ensure the safety during the construction process, it is necessary to erect a trestle structure on the structural surface of the building for relevant equipment to carry out construction operations on it.

[0003] Currently, most trestles are directly erected on the structural surface of the building. The forces generated when the equipment on the trestle works will be transmitted to the structural surface of the building through the trestle, resulting in excessive pressure or stress concentration on the structural surface, and causing cracks, deformations or even damages to the structural surface. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a temporary prefabricated steel trestle structure on a structural surface, which solves the problem that in the prior art, the trestle is directly erected on the structural surface of the building, and during the use of the trestle, the trestle transmits the force to the structural surface of the building, resulting in damage to the structural surface.

[0005] According to an embodiment of the utility model, a temporary prefabricated steel trestle structure on a structural surface includes main beams, secondary beams and fixing components. There are several main beams and secondary beams. The main beams are fixedly connected to the external building through the fixing components. The two main beams are connected by first bolts, and the main beams and the secondary beams are also connected by first bolts. Multiple main beams and multiple secondary beams are combined to form a beam-slab structure. A surface layer steel plate is laid on the top of the beam-slab structure. The fixing components include: steel backing plates, which are arranged on the top of the external building. Second bolts are fixedly arranged on the top of the external building. The second bolts pass through the steel backing plates and are screwed with nuts. The main beams and the steel backing plates are fixedly connected through connecting pieces.

[0006] Compared with the prior art, the utility model has the following beneficial effects: By adopting detachable connection and fixation with the first bolts between the main beams and between the main beam and the secondary beam, it is convenient to reuse each component. The main beam and the secondary beam are assembled to form a plate beam for laying the surface layer steel plate. Then, a steel backing plate is fixedly arranged on the structural surface of the building with the second bolts, and then the main beam and the steel backing plate are connected with a connecting piece to form a trestle for construction equipment operation. There is a space with the thickness of the steel backing plate between the plate beam structure and the structural surface, so that most areas of the plate beam do not contact the structural surface of the building. Therefore, when the construction equipment is operating, the force it receives is transmitted to the building area connected to the plate beam through the connecting piece and the steel backing plate, reducing the direct pressure of the construction equipment on the structural surface of the building, thereby avoiding damage to the structural surface of the building.

[0007] Further, the connecting piece includes: a screw rod, one end of the screw rod is fixedly connected with the steel backing plate, and the other end of the screw rod passes through the main beam and is also screwed with a nut.

[0008] Further, it further includes a gum pad, the gum pad is arranged between the external building and the steel backing plate, and the second bolt sequentially passes through the steel backing plate and the gum pad and then is fixed to the external building.

[0009] Further, the second bolt is an expansion bolt.

[0010] Further, the screw rod is plug-welded to the steel backing plate.

[0011] Further, it further includes: a connecting steel plate, and a plurality of connecting holes are equidistantly arranged on the connecting steel plate.

[0012] Further, both the main beam and the secondary beam are I-beams.

[0013] Further, reinforcing plates are provided at both ends of each main beam, both ends of the reinforcing plate are respectively fixed to the two wings of the I-shaped main beam, and one end of a connecting plate is also provided on the side of the reinforcing plate facing the main beam, and the other end of the connecting plate is connected to the outer wall of the main beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the overall structure of an embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the connection of the main beam of an embodiment of the utility model.

[0016] Figure 3 It is a schematic diagram of the connection between the main beam and the secondary beam of an embodiment of the utility model.

[0017] Figure 4 It is a schematic diagram of the structure of the fixing component of an embodiment of the utility model.

[0018] Figure 5Schematic diagram of the connection steel plate structure of the embodiment of the present utility model.

[0019] In the above-mentioned drawings: 1, main beam; 2, secondary beam; 3, building; 4, first bolt; 5, surface layer steel plate; 6, steel backing plate; 7, second bolt; 8, screw rod; 9, gum pad; 10, connection steel plate; 11, connection hole; 12, reinforcement plate; 13, connection plate. Specific embodiments

[0020] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0021] As Figure 1 shown in Fig. -4, an embodiment of the present utility model provides a temporary prefabricated steel trestle structure on a structural surface, including a main beam 1, a secondary beam 2 and a fixing component. There are several main beams 1 and secondary beams 2. The main beam 1 is fixedly connected to the external building 3 through the fixing component. The two main beams 1 are connected by a first bolt 4, and the main beam 1 and the secondary beam 2 are also connected by a first bolt 4. Multiple main beams 1 and multiple secondary beams 2 are combined to form a beam-slab structure. A surface layer steel plate 5 is laid on the top of the beam-slab structure. The fixing component includes: a steel backing plate 6, which is arranged on the top of the external building 3. A second bolt 7 is fixedly arranged on the top of the external building 3. The second bolt 7 passes through the steel backing plate 6 and is screwed with a nut. The main beam 1 is fixedly connected to the steel backing plate 6 through a connecting piece. When installing this trestle, first connect the fixing component to the structural surface (the top of the structural column or structural beam) of the external building 3. Specifically, one end of the second bolt 7 is fixed to the structural surface of the building 3. The steel backing plate 6 is provided with through holes or strip-shaped grooves for the second bolt 7 to pass through. Then, the second bolt 7 is passed through the steel backing plate 6, and then screwed with the second bolt 7 through the nut, so that the steel backing plate 6 is fixed to the structural surface of the building 3. Then, the main beam 1 is connected to the steel backing plate 6 through a connecting piece. The multiple main beams 1 and between the main beam 1 and the secondary beam 2 are screwed and fixed by the first bolt 4, thus forming a beam-slab structure. Finally, laying the surface layer steel plate 5 on the beam-slab structure can form a trestle for equipment to carry out construction operations. By combining and assembling multiple main beams 1 and multiple secondary beams 2 to form a trestle, it is convenient to reuse components such as the main beam 1 and the secondary beam 2 after removing the trestle later. Since there is a steel backing plate 6 between the structural surface of the building 3 and the main beam 1, the steel backing plate 6 raises the horizontal height of the entire trestle, so that most areas at the bottom of the beam-slab composed of multiple main beams 1 and secondary beams 2 do not contact the structural surface of the building 3. The formed trestle disperses the force it receives to the structural beam of the building 3, reducing the direct pressure of the construction equipment on the trestle on the structural surface of the building 3, thereby avoiding damage to the structural surface of the building 3.

[0022] As Figure 2 and 3As shown in the figure, further, the connecting member includes: a screw rod 8, one end of the screw rod 8 is fixedly connected to the steel backing plate 6, and the other end of the screw rod 8 passes through the main beam 1 and is also screwed with a nut. During installation, fix one end of the screw rod 8 to the steel backing plate 6, and after the other end of the screw rod 8 passes through the main beam 1, lock it with a nut, so that the main beam 1 is fixedly connected to the steel backing plate 6.

[0023] As Figure 4 shown in the figure, further, it also includes a rubber pad 9. The rubber pad 9 is arranged between the external building 3 and the steel backing plate 6. The second bolt 7 sequentially passes through the steel backing plate 6 and the rubber pad 9 and then is fixedly connected to the external building 3. In this embodiment, a rubber pad 9 is provided between the structural surface of the external building 3 and the steel backing plate 6, and through holes or strip-shaped grooves for the second bolt 7 to pass through are also provided on the rubber pad 9. By arranging the rubber pad 9 between the steel backing plate 6 and the structural surface of the building 3, the friction between the steel backing plate 6 and the structural surface of the building 3 is increased, effectively avoiding the lateral slip between the steel backing plate 6 and the structural surface of the building 3, making the trestle more stable during use.

[0024] Further, the second bolt 7 is an expansion bolt. The expansion bolt has strong anchoring force and can provide extremely strong tensile and shear resistance, enabling the steel backing plate 6 to be tightly connected to the structural surface of the building 3 and ensuring the stability of the subsequent trestle.

[0025] Further, the screw rod 8 is plug welded to the steel backing plate 6. Plug welding is a welding process. Specifically, through holes or strip-shaped grooves are provided on the steel backing plate 6. When welding and fixing the screw rod 8 to the steel backing plate 6, only the opening area of the steel backing plate 6 needs to be welded, reducing the heating of the entire steel backing plate 6, thereby reducing the thermal deformation of the steel backing plate 6 and ensuring the flatness of the steel backing plate 6.

[0026] As Figure 2 shown in the figure, further, it also includes: a connecting steel plate 10, and a number of connecting holes 11 are equidistantly arranged on the connecting steel plate 10. When connecting two main beams 1 together, place the connecting steel plate 10 at the connection of the two main beams 1. Corresponding hole positions are pre-opened on the main beam 1 for the connecting holes 11 on the connecting steel plate 10. Then, sequentially insert the first bolt 4 through the main beam 1 and the connecting steel plate 10 and then lock it. Multiple connecting holes 11 can be used for multiple first bolts 4 to be screwed, thereby improving the fastening force between the main beam 1 and the connecting steel plate 10.

[0027] Further, both the main beam 1 and the secondary beam 2 are I-beams. The I-beam has high bending strength and bearing capacity, can effectively support the load on the trestle, ensure the overall safety and stability of the trestle, and the I-beam is also easy to find, facilitating cutting, assembling and installing at the construction site.

[0028] As Figure 2As shown in the figure, further, reinforcing plates 12 are provided at both ends of each main beam 1. The two ends of the reinforcing plate 12 are respectively fixed to the two wings of the I-shaped main beam 1. One end of a connecting plate 13 is also provided on the side of the reinforcing plate 12 facing the main beam 1, and the other end of the connecting plate 13 is connected to the outer wall of the main beam 1. Specifically, the reinforcing plate 12 and the connecting plate 13 form a T-shaped structure. The reinforcing plate 12 improves the overall rigidity and bending resistance of the I-beam, inhibits the lateral movement and distortion of the flange of the I-beam, so that the I-beam will not undergo elastic deformation, and the connecting plate 13 and the reinforcing plate 12 form a triangular structure, further improving the strength of the reinforcing plate 12.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A temporary assembled steel trestle structure on a structural surface, characterized in that: include: A main beam (1) and a secondary beam (2), wherein the main beam (1) and the secondary beam (2) are both multiple, the main beam (1) and the external building (3) are fixedly connected via a fixing assembly, the two main beams (1) are connected via a first bolt (4), the main beam (1) and the secondary beam (2) are also connected via a first bolt (4), a plurality of main beams (1) and a plurality of secondary beams (2) are combined to form a beam-slab structure, and a surface steel plate (5) is laid on the top of the beam-slab structure; The fixing assembly comprises: a steel pad (6), the steel pad (6) being arranged on the top of the external building (3), a second bolt (7) being fixedly arranged on the top of the external building (3), the second bolt (7) passing through the steel pad (6) and then being screwed with a nut, and the main beam (1) and the steel pad (6) being fixedly connected via a connecting piece.

2. A temporary assembled steel trestle structure on a structural surface as claimed in claim 1, characterized in that: The connecting piece comprises a screw rod (8), one end of which is fixedly connected to the steel pad (6), and the other end of which passes through the main beam (1) and is also screwed with a nut.

3. A temporary assembled steel trestle structure on a structural surface as claimed in claim 2, characterized in that: It also includes a rubber pad (9) which is arranged between the external building (3) and the steel pad (6). The second bolt (7) passes through the steel pad (6) and the rubber pad (9) in sequence and is fixed to the external building (3).

4. A temporary assembled steel trestle structure on a structural surface as claimed in any one of claims 1 to 3, characterized in that: The second bolt (7) is an expansion bolt.

5. The temporary assembled steel trestle structure on a structural surface as claimed in claim 2, characterized in that: The screw rod (8) is connected to the steel backing plate (6) by plug welding.

6. The temporary assembled steel trestle structure on a structural surface as claimed in claim 1, characterized in that: Also includes: A connecting steel plate (10) is provided with a plurality of connecting holes (11) at equal intervals.

7. The temporary assembled steel trestle structure on a structural surface as claimed in claim 1, characterized in that: The main beam (1) and the secondary beam (2) are both I-beams.

8. A temporary assembled steel trestle structure on a structural surface as claimed in claim 7, characterized in that: Both ends of each main beam (1) are provided with a reinforcing plate (12), and both ends of the reinforcing plate (12) are respectively fixed to two wings of the I-shaped main beam (1), and one end of a connecting plate (13) is also provided on the side of the reinforcing plate (12) facing the main beam (1), and the other end of the connecting plate (13) is connected to the outer wall of the main beam (1).

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