Foundation pit assembly type steel trestle

Abstract

The utility model discloses a foundation pit assembly type steel trestle, and relates to the technical field of steel trestles. The foundation pit assembly type steel trestle comprises a bearing plate, a bailey truss is fixedly connected to the upper surface of the bearing plate, a supporting plate is fixedly connected to the upper surface of the bailey truss, a groove A is formed in the middle of the supporting plate, and an arc-shaped plate is fixedly connected to the interior of the groove A. By means of the arc-shaped plates and the bailey truss, when the steel trestle is used, the steel trestle bears heavy weight and is seriously damaged, the arc-shaped plates can increase bearing in the supporting plates, the arc-shaped plates are arranged in a staggered mode, stress concentration is reduced, loads can be effectively dispersed, the stability of the whole structure is improved, and the service life of the steel trestle is prolonged. Compared with a plane structure, the arc-shaped structure has higher rigidity and can better resist bending and deformation, the bailey truss is formed by combining a plurality of triangular supports, the triangle is the most stable shape, the bailey truss is made of high-strength steel, and the bearing capacity can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of steel trestle bridges, in particular to a foundation pit assembled steel trestle bridge. Background Art

[0002] A foundation pit refers to a deep pit excavated during construction for the purpose of underground structure construction. The design and construction of a foundation pit is a very important part of a construction project, involving multiple fields such as civil engineering, structural engineering, and construction management. To facilitate construction, a temporary construction bridge needs to be built on the foundation pit. Steel bridges are the most common temporary bridge structures, and the construction of steel bridges is conducive to the smooth progress of the project.

[0003] Upon investigation, a Chinese utility model patent discloses a foundation pit assembled steel trestle (publication number: CN220224906U), which includes a load-bearing beam, the bottom of which is fixedly installed with evenly distributed steel pipe piles, a scissor support frame fixedly installed between two adjacent steel pipe piles, a Bailey frame fixedly installed on the top of the load-bearing beam, a transverse distribution beam fixedly installed on the top of the Bailey frame, a longitudinal distribution beam fixedly installed on the top of the transverse distribution beam, an assembly bridge plate fixedly installed on the top of the longitudinal distribution beam, and installation grooves are provided on both sides of the transverse distribution beam. The inner top wall of the installation groove is provided with positioning holes arranged at equal distances. This utility model provides multiple groups of positioning holes, allowing users to select appropriate positioning holes according to actual conditions to adjust the installation position of the railing. The coordinated use of threaded sleeve 1 and threaded sleeve 2 limits the position of the railing while preventing the threaded sleeve 1 from loosening due to bridge deck vibration. At the same time, the two groups of railings can be quickly connected through the sleeve.

[0004] Although the position of the railings can be adjusted in the above patent, when a steel trestle is used, heavy objects need to be carried when coming and going during construction. After a long period of use, the support plates built on the surface of the steel trestle are prone to breakage and poor stability. Landslides are likely to occur when people walk on it, posing a threat to personal safety. The weak structure will cause the steel trestle to be subjected to excessive stress during use, shortening its service life. In addition, due to insufficient firmness, the bridge may need to be replaced or rebuilt more frequently, increasing long-term investment costs. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a foundation pit assembled steel trestle, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a foundation pit assembled steel trestle, including a load-bearing plate, the upper surface of the load-bearing plate is fixedly connected to a Bailey frame, the upper surface of the Bailey frame is fixedly connected to a support plate, a groove A is provided in the middle of the support plate, an arc-shaped plate is fixedly connected to the inside of the groove A, slide grooves are provided on both sides of the support plate, and an adjustment component is slidably connected to the inside of the slide groove.

[0007] A further improvement of the technical solution of the present invention is that the adjustment component includes a slider, the outer surface of the slider is slidably connected to the inside of the slide groove, and the upper surface of the slider is threadedly connected to the upper surface of the support plate through an A fixing bolt.

[0008] A further improvement of the technical solution of the present utility model is that one end of the slider is fixedly connected to a sleeve, an auxiliary rod is inserted into the interior of the sleeve, and a threaded hole A for threaded connection with a fixing bolt B is provided on the surface of the sleeve.

[0009] A further improvement of the technical solution of the present invention is that a B groove is provided on one side of the auxiliary rod, a railing is inserted into the inside of the B groove, and a B threaded hole for screwing a C fixing bolt is provided on the surface of the railing.

[0010] A further improvement of the technical solution of the present invention is that: the four sides of the bottom of the bearing plate are fixedly connected with plug rods, and the bottoms of the plug rods are tapered blocks.

[0011] A further improvement of the technical solution of the present utility model is that: both sides of the bottom of the load-bearing plate are fixedly connected with support columns, the bottom of the support columns is fixedly connected with a chassis, and the outer surface of the support columns is fixedly connected with a reinforcement frame.

[0012] A further improvement of the technical solution of the utility model is that: a connecting rod is fixedly connected to the bottom of the chassis, and a weight block is clamped on the outer surface of the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting up the curved plates and Bailey frames, the steel trestle bears a heavier weight when in use, and the damage will be more serious. The use of the curved plates can increase the load-bearing capacity inside the support plates, and the staggered arrangement of the curved plates can reduce stress concentration, effectively disperse the load, and improve the stability of the overall structure. The curved structure has higher rigidity than the plane structure and can better resist bending and deformation. The Bailey frame is formed by a combination of multiple triangular brackets, and the triangle is the most stable shape. The Bailey frame uses high-strength steel and can increase the bearing capacity. By setting up the adjustment component, when the height and position of the railing need to be adjusted, it can be adjusted using the adjustment component. The adjustable railing height and position can be adjusted according to different usage scenarios and needs to ensure the safety of pedestrians and vehicles. According to the use of the bridge, the height and strength of the railing are adjusted to enhance the protection effect and reduce the risk of accidents. Regular adjustment and maintenance of the railing can extend its service life and reduce replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the foundation pit prefabricated steel trestle;

[0015] Figure 2 This is a structural diagram of the reinforcement frame in the foundation pit prefabricated steel trestle;

[0016] Figure 3 This is a schematic diagram of the structure of the sleeve in the foundation pit prefabricated steel trestle;

[0017] Figure 4 This is a structural diagram of the curved plate in the foundation pit prefabricated steel trestle;

[0018] Figure 5 This is a structural diagram of the Bailey frame in the foundation pit prefabricated steel trestle.

[0019] In the figure: 1. Load-bearing plate; 2. Bailey frame; 3. Support plate; 4. Arc plate; 5. Slider; 6. Fixing bolt A; 7. Sleeve; 8. Auxiliary rod; 9. Fixing bolt B; 10. Railing; 11. Fixing bolt C; 12. Insert rod; 13. Support column; 14. Chassis; 15. Reinforcement frame; 16. Connecting rod; 17. Weight block. DETAILED DESCRIPTION

[0020] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0021] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0022] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0023] Reference Figure 1-Figure 5 , this utility model provides two technical solutions:

[0024] Example 1:

[0025] A foundation pit assembled steel trestle includes a load-bearing plate 1, the upper surface of the load-bearing plate 1 is fixedly connected to a Bailey frame 2, the upper surface of the Bailey frame 2 is fixedly connected to a support plate 3, a groove A is provided in the middle of the support plate 3, an arc-shaped plate 4 is fixedly connected inside the groove A, and slide grooves are provided on both sides of the support plate 3, and an adjustment component is slidably connected inside the slide grooves.

[0026] Example 2:

[0027] On the basis of Example 1: the adjustment component includes a slider 5, the outer surface of the slider 5 is slidably connected to the inside of the slide groove, and the upper surface of the slider 5 is threadedly connected to the upper surface of the support plate 3 through the A fixing bolt 6. When the density of the auxiliary rod 8 needs to be adjusted, the slider 5 is slid in the support plate 3, and the slider 5 drives the sleeve 7 and the auxiliary rod 8 to move. After sliding to the appropriate spacing position, the slider 5 is fixed to the support plate 3 using the A fixing bolt 6.

[0028] One end of the slider 5 is fixedly connected to the sleeve 7, and the auxiliary rod 8 is inserted into the interior of the sleeve 7. The surface of the sleeve 7 is provided with an A threaded hole for screwing the B fixing bolt 9. When the height of the railing 10 needs to be adjusted, the position of the auxiliary rod 8 in the sleeve 7 is adjusted upward or downward. After adjusting to the appropriate height, the auxiliary rod 8 is reinforced with the B fixing bolt 9. According to the use of the bridge, the height and strength of the railing 10 can be adjusted to enhance the protection effect and reduce the risk of accidents. Regular adjustment and maintenance of the railing 10 can extend its service life and reduce replacement costs.

[0029] A B groove is provided on one side of the auxiliary rod 8, and a handrail 10 is inserted into the inside of the B groove. A B threaded hole is provided on the surface of the handrail 10 for screwing a C fixing bolt 11. When adjusting the spacing of the auxiliary rods 8, the position of the handrail 10 on the auxiliary rod 8 needs to be adjusted together. When the spacing of the auxiliary rods 8 is adjusted, the position of the handrail 10 is also determined, and the handrail 10 is fixed to the auxiliary rod 8 using the C fixing bolt 11.

[0030] Insertion rods 12 are fixedly connected to the four sides of the bottom of the bearing plate 1, and the bottom of the insertion rods 12 is a tapered block.

[0031] Support columns 13 are fixedly connected to both sides of the bottom of the load-bearing plate 1, the bottom of the support columns 13 is fixedly connected to the chassis 14, and the outer surface of the support columns 13 is fixedly connected to the reinforcement frame 15. The reinforcement frame 15 can support the support columns 13 on both sides. In addition, it can increase the firmness and prevent the support columns 13 from breaking due to bearing more loads.

[0032] The bottom of the chassis 14 is fixedly connected to a connecting rod 16, and a weight block 17 is clamped on the outer surface of the connecting rod 16. The support column 13 is placed in the foundation pit. According to the bearing capacity and the water level inside the foundation pit, the weight block 17 is placed on the connecting rod 16 to increase the gravity of the chassis 14 to avoid excessive buoyancy and the tilting of the load-bearing plate 1, which is prone to danger.

[0033] On the basis of Example 1 and Example 2: When using a steel trestle, place the load-bearing plate 1 above the foundation pit, use the inserted rod 12 to preliminarily fix and position the load-bearing plate 1, then place the support column 13 in the foundation pit, and place the weight block 17 on the connecting rod 16 according to the bearing capacity and the water level inside the foundation pit to increase the gravity of the chassis 14 to avoid excessive buoyancy and the load-bearing plate 1 from tilting, which is prone to danger. Then, the reinforcement frame 15 can support the support columns 13 on both sides. In addition, it can increase the firmness and avoid the support columns 13 from breaking due to bearing too much load. Then, when it is necessary to adjust the height of the railing 10, adjust the position of the auxiliary rod 8 in the sleeve 7 upward or downward. After adjusting to the appropriate height, use the B fixing bolt 9 to reinforce the auxiliary rod 8. According to the use of the bridge, adjust the height and strength of the railing 10 to enhance the protection effect and reduce the risk of accidents. Regularly adjusting and maintaining the railing 10 can extend its service life and reduce replacement costs. Then, when it is necessary to adjust the density of the auxiliary rod 8, the slider 5 is placed on the support plate 3 slides inside, the slider 5 drives the sleeve 7 and the auxiliary rod 8 to move. After sliding to the appropriate spacing position, the slider 5 is fixed to the support plate 3 using the A fixing bolt 6. Subsequently, while adjusting the spacing of the auxiliary rods 8, it is necessary to adjust the position of the railing 10 on the auxiliary rod 8. When the spacing of the auxiliary rods 8 is adjusted, the position of the railing 10 is also determined, and the railing 10 is fixed to the auxiliary rod 8 using the C fixing bolt 11. Subsequently, a Bailey frame 2 is set between the support plate 3 and the load-bearing plate 1. The Bailey frame 2 is formed by a combination of multiple triangular brackets. The triangle is the most stable shape. The Bailey frame 2 is made of high-strength steel, which can increase the bearing capacity, increase firmness and stability. Subsequently, when the support plate 3 is in use, it bears a heavy weight and will be damaged more seriously. The curved plate 4 can be used to increase the load-bearing capacity inside the support plate 3. The curved plates 4 are staggered to reduce stress concentration, effectively disperse the load, and improve the stability of the overall structure. The curved structure has higher rigidity than the plane structure and can better resist bending and deformation.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation pit assembled steel trestle, comprising a bearing plate (1), characterized in that: The upper surface of the load-bearing plate (1) is fixedly connected to a Bailey frame (2), the upper surface of the Bailey frame (2) is fixedly connected to a support plate (3), a groove A is provided in the middle of the support plate (3), an arc-shaped plate (4) is fixedly connected inside the groove A, and sliding grooves are provided on both sides of the support plate (3), and an adjustment component is slidably connected inside the sliding grooves.

2. The foundation pit assembled steel trestle according to claim 1, characterized in that: The adjustment assembly comprises a slider (5), the outer surface of the slider (5) is slidably connected to the inside of the slide groove, and the upper surface of the slider (5) is threadedly connected to the upper surface of the support plate (3) via an A fixing bolt (6).

3. The foundation pit assembled steel trestle according to claim 2, characterized in that: One end of the slider (5) is fixedly connected to a sleeve (7), an auxiliary rod (8) is inserted into the interior of the sleeve (7), and a threaded hole A for threading a fixing bolt B (9) is provided on the surface of the sleeve (7).

4. The foundation pit assembled steel trestle according to claim 3, characterized in that: A B groove is provided on one side of the auxiliary rod (8), a handrail (10) is inserted into the interior of the B groove, and a B threaded hole for screwing a C fixing bolt (11) is provided on the surface of the handrail (10).

5. The foundation pit assembled steel trestle according to claim 1, characterized in that: Insertion rods (12) are fixedly connected to the four sides of the bottom of the load-bearing plate (1), and the bottom of the insertion rods (12) is a conical block.

6. The foundation pit assembled steel trestle according to claim 1, characterized in that: Both sides of the bottom of the load-bearing plate (1) are fixedly connected to support columns (13), the bottom of the support column (13) is fixedly connected to a chassis (14), and the outer surface of the support column (13) is fixedly connected to a reinforcement frame (15).

7. The foundation pit assembled steel trestle according to claim 6, characterized in that: The bottom of the chassis (14) is fixedly connected to a connecting rod (16), and the outer surface of the connecting rod (16) is clamped with a weight block (17).

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