Reinforcing structure of steel trestle connecting joint

Abstract

The utility model discloses a reinforcing structure of a steel trestle connection node, which comprises a steel pipe column and a distribution beam, the lower end of the distribution beam is welded with the top of the steel pipe column, a plurality of bailey beams which are sequentially connected along the direction of a bridge are arranged between the distribution beam and the bridge floor, and bailey frames are arranged at two ends and in the middle of each bailey beam. A reinforcing vertical rod with a framework structure is arranged on the bailey truss at the joint of the two sections of bailey beams at the upper part of the distribution beam, the reinforcing vertical rod comprises two channel steels which are respectively arranged at the left side and the right side of the bailey truss, and the tops and the bottoms of the two channel steels are respectively propped against the inner sides of the upper cross beam and the lower cross beam of the bailey beams; the channel steel is consistent with the bailey truss in height; a plurality of pairs of first square steel arranged at intervals in the vertical direction of the steel channels are welded to the front ends and the rear ends of the two steel channels, and symmetrically-arranged second square steel is welded to the positions, aligned to the tops and the bottoms of the two steel channels, of an upper cross beam and a lower cross beam of the bailey beam correspondingly. According to the reinforcing structure of the connecting node, the integrity of the structure is improved, and the bearing capacity is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction engineering, and in particular relates to a reinforcement node structure of a steel trestle for offshore bridge construction. Background Art

[0002] As a temporary construction channel during the bridge construction process, the steel trestle can meet the needs of personnel passage and equipment such as truck cranes and crawler cranes to reach the pier for operation. The steel trestle generally consists of three main parts: the bridge deck, the Bailey beam, and the supporting steel pipe. During the construction of the steel trestle, the Bailey beams are often connected by bolts, resulting in poor stability. At the same time, a large amount of material is required to reinforce the bolt nodes connecting the Bailey beams. Therefore, there is an urgent need for a steel trestle node reinforcement structure with stable structure and cost saving. Utility Model Content

[0003] In view of the above-mentioned prior art, the utility model provides a reinforcement structure suitable for the connection node of the steel trestle, which has the advantages of stable structure and cost saving. At the same time, it also provides an innovative idea for the node reinforcement form of the offshore steel trestle.

[0004] In order to solve the above technical problems, the utility model proposes a steel trestle node reinforcement structure to achieve a stable connection between Bailey beams. The technical solution adopted is: the reinforcement structure of the steel trestle connection node includes a steel pipe column and a distribution beam. The lower end of the distribution beam is welded to the top of the steel pipe pile. A plurality of Bailey beams connected in sequence along the direction of the bridge are arranged between the distribution beam and the bridge deck. Bailey frames are arranged at both ends and in the middle of each Bailey beam. Bailey plates are welded at the upper and lower positions of both ends of each Bailey beam. The Bailey plates are provided with bolt through holes. The Bailey frames at the joints and adjacent Bailey beams are provided with reinforcing vertical bars of a skeleton structure, and the reinforcing vertical bars include two channel steels, multiple pairs of first square steels and two pairs of second square steels. The two channel steels are respectively arranged on the left and right sides of the Bailey frame, and the tops and bottoms of the two channel steels respectively abut against the inner sides of the upper and lower cross beams of the Bailey beam; the channel steel is consistent in height with the Bailey frame; multiple pairs of first square steels are welded to the front and rear ends of the two channel steels and are arranged at intervals along the vertical direction of the channel steels, and two pairs of second square steels are respectively welded to the Bailey beam and are located at positions aligned with the tops and bottoms of the two channel steels.

[0005] Furthermore, the reinforcement structure of the steel trestle connection node described in the utility model, wherein:

[0006] The Bailey plates between adjacent Bailey beams are connected by bolts.

[0007] The upper and lower ends of the channel steel are respectively welded to the upper and lower cross beams of the Bailey beam.

[0008] The upper and lower cross beams of the Bailey beam are both channel steel structures, and the second square steel is embedded in the notch of the cross beam.

[0009] The upper end of the distribution beam is welded to the lower cross beam of the Bailey beam.

[0010] The first square steels and the second square steels are respectively arranged in pairs of two; the number of pairs of the first square steels welded to the front and rear ends of the two channel steels and arranged along the vertical intervals of the channel steels is two pairs.

[0011] The channel steel, the first square steel and the second square steel are all made of Q235B; the channel steel is 10×1300mm, the notches of the two channel steels face outwards, and the distance between the two channel steels is 100mm.

[0012] The first square steel adopts square steel of 160×10×160mm, and the spacing between the first square steels in pairs is 110mm; the vertical spacing between the two pairs of first square steels is 600mm; the second square steel adopts square steel of 40×10×85mm, and the spacing between the second square steels in pairs is 91mm.

[0013] The surfaces of the channel steel, the first square steel and the second square steel are all coated with polyurethane anti-corrosion paint.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Since the reinforcement structure is used for the rigid connection between Bailey beams and between Bailey beams and distribution beams, the bending moment at the connection nodes between Bailey beams and distribution beams, and between distribution beams and steel pipe piles is redistributed, reducing stress; since the reinforcement structure is only set at the node position of the steel pipe piles to achieve local reinforcement, and the main body of the reinforcement structure is the reinforcing vertical rod of the skeleton structure, the amount of steel used is reduced while improving the integrity and stability of the structure, achieving the effect of safety, reliability and cost saving. Through experimental use in the construction of offshore steel trestle, the reinforcing vertical rods of the skeleton structure are welded and prefabricated in advance, and the overall structure of the reinforcing vertical rods and Bailey beams is installed on the distribution beam connected to the steel pipe piles, with a small amount of welding and easy installation and disassembly. The structure has strong integrity and stable force, which improves the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the reinforcement structure of the steel trestle connection node of the embodiment;

[0017] Figure 2 yes Figure 1 A local enlarged view of the connecting node;

[0018] Figure 3-1 yes Figure 2 Main view of the middle reinforcement vertical rod structure;

[0019] Figure 3-2 yes Figure 3-1 The cross-sectional view of the AA position shown in ;

[0020] Figure 3-3 yes Figure 3-2 Enlarged view of the cross-sectional structure at the middle BB position.

[0021] In the figure:

[0022] 1- Strengthening vertical rod 2- Bailey beam 3- Distribution beam 4- Steel pipe pile

[0023] 11-Channel steel 12-First square steel 13-Second square steel 21-Bailey plate

[0024] 22- Bailey Rack DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the utility model in conjunction with the drawings of the embodiments of the utility model. However, the description is only a part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 and Figure 2 As shown, the utility model proposes a reinforcement structure of a steel trestle connection node, including a steel pipe column 4 and a distribution beam 3, the lower end of the distribution beam 3 is welded to the top of the steel pipe pile 4, and a multi-section Bailey beam 2 connected in sequence along the bridge direction is arranged between the distribution beam 3 and the bridge deck, the Bailey beam 2 includes an upper crossbeam and a lower crossbeam, and the upper end of the distribution beam 3 is welded to the lower crossbeam of the Bailey beam 2, as shown in FIG. Figure 2 and Figure 3-3 As shown, Bailey frames 22 are provided at both ends and the middle of each Bailey beam 2, and Bailey plates 21 are welded at the upper and lower positions of both ends of each Bailey beam 2. The Bailey plates 21 are provided with bolt through holes, and the Bailey plates 21 between adjacent Bailey beams 2 are connected by bolts.

[0027] like Figure 1 to Figure 3-3As shown, at the connection of the two sections of Bailey beams 2 located at the upper part of the distribution beam 3 and on the Bailey frame 22 of the adjacent Bailey beams 2, a reinforcing vertical rod 1 of a skeleton structure is provided, and the upper and lower ends of the reinforcing vertical rod 1 are welded to the Bailey beam 2. The reinforcing vertical rod 1 includes two channel steels 11, multiple pairs of first square steels 12 (two pairs in this embodiment) and two pairs of second square steels, and the first square steels 12 and the second square steels 13 are respectively arranged in pairs of two. Two channel steels 11 are respectively arranged on the left and right sides of the Bailey frame 22, and the upper and lower ends of the channel steel 11 are respectively welded to the upper and lower cross beams of the Bailey beam 2. The top and bottom of the two channel steels 11 respectively abut against the inner side of the upper and lower cross beams of the Bailey beam 2; the channel steel 11 is at the same height as the Bailey frame 22; multiple pairs of first square steels 12 are welded to the front and rear ends of the two channel steels 11 and are arranged at intervals along the vertical direction of the channel steels 11; two pairs of second square steels 13 are respectively welded to the Bailey beam 2 and are located at positions aligned with the top and bottom of the two channel steels 11. The upper and lower cross beams of the Bailey beam 2 are both channel steel structures, and the second square steels 13 are embedded in the notches of the cross beams. The surfaces of the channel steels 11, the first square steels 12 and the second square steels 13 constituting the skeleton structure reinforcement vertical rods 1 are all coated with polyurethane anti-corrosion paint.

[0028] like Figure 3-1 , Figure 3-2 and Figure 3-3 As shown, the two ends of the two channel steels 11 serving as the main body of the reinforcing vertical rod 1 are respectively welded to the upper crossbeam and the lower crossbeam of the Bailey beam 2 as a whole; the channel steel 1, the first square steel 12, and the second square steel 13 constitute a reinforcing vertical rod 1 of a skeleton structure welded around the Bailey frame 22, and the structure is an integral and stable structure. In the utility model, the reinforcing vertical rod 1 is designed as a skeleton structure in order to improve the integrity of the structure and increase the bearing capacity. The advantage of this structure is that the reinforcing vertical rod 1 is rigidly connected to the Bailey beam 2, so that the bending moment at the Bailey beam 2 and the distribution beam 3, and the distribution beam 3 and the steel pipe pile 4 are redistributed, thereby reducing the stress. In this embodiment, the reinforcing vertical rod 1 is arranged at the node where the steel pipe pile 4 and the distribution beam 3 are connected, that is, the reinforcing vertical rod 1 is only arranged at the connection node at the steel pipe pile 4 for local reinforcement, which not only reduces the amount of steel used, but also improves the integrity and stability of the structure, thereby achieving the effects of safety, reliability and cost saving. When the reinforcement structure of the utility model is used in the construction of an offshore steel trestle, it is only necessary to install the integral structure of the reinforcement vertical rod 1 and the Bailey beam 2 welded as a whole onto the distribution beam 3 connected to the steel pipe pile 4.

[0029] In the present utility model, the material of the channel steel 11, the first square steel 12 and the second square steel 13 are all Q235B; the channel steel 11 adopts channel steel 10×1300mm, the notches of the two channel steels 11 face outward, and the spacing between the two channel steels 11 is 100mm. The first square steel 12 adopts square steel 160×10×160mm, and the spacing between the first square steels 12 in pairs is 110mm; the vertical spacing between the two pairs of first square steels 12 is 600mm. The second square steel 13 adopts square steel 40×10×85mm, and the spacing between the second square steels 13 in pairs is 91mm. The vertical spacing between the first square steel 12 and the second square steel 13 is 400mm, and the vertical spacing between the two pairs of first square steels 12 is 600mm. Since the channel steel 11, the first and second square steels 12 and 13 in the reinforcement vertical rod 1 of the skeleton structure can be prefabricated and welded in advance, the steel material used can be high-efficiency hot-rolled steel, which reduces the processing steps. The steel can be assembled, welded, shot-blasted and then painted with polyurethane anti-corrosion paint in the factory to form. Therefore, the welding workload at the construction site is small and the installation and disassembly are convenient.

[0030] The reinforcing vertical rod in the reinforcement structure of the utility model is welded by channel steel 11, first square steel 12 and second square steel 13, which improves the integrity and stability of the structure. The position of the reinforcing vertical rod 1 is determined by the position of the steel pipe pile 4 to achieve the effect of local reinforcement, reduce the amount of steel used and save costs. The reinforcing vertical rod 1 is connected to the Bailey beam 2, the Bailey beam 2 is connected to the distribution beam 3, and the distribution beam 3 is connected to the steel pipe pile 4, thereby increasing the stability of the overall structure.

[0031] In summary, the utility model optimizes the structure of the node reinforcement in the steel trestle and its construction process, has the advantages of strong stability and convenient installation and disassembly, improves the construction quality and efficiency of the steel trestle, and also reduces the construction cost.

[0032] Although the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the guidance of the utility model, ordinary technicians in this field can make many improvements and changes without departing from the purpose of the utility model, all of which are within the protection of the utility model.

Claims

1. A reinforcement structure for a steel trestle connection node, comprising a steel pipe pile (4) and a distribution beam (3), wherein the lower end of the distribution beam (3) is welded to the top of the steel pipe pile (4), and a plurality of Bailey beams (2) are arranged between the distribution beam (3) and the bridge deck and are connected in sequence along the direction of the bridge, and Bailey frames (22) are arranged at both ends and in the middle of each Bailey beam (2), and Bailey plates (21) are welded at the upper and lower positions of both ends of each Bailey beam (2), and the Bailey plates (21) are provided with bolt through holes, characterized in that: A reinforcing vertical rod (1) of a skeleton structure is provided at the connection of two sections of Bailey beams (2) located at the upper part of the distribution beam (3) and on the Bailey frames (22) of the adjacent Bailey beams (2). The reinforcing vertical rod (1) comprises two channel steels (11), a plurality of pairs of first square steels (12) and two pairs of second square steels. The two channel steels (11) are arranged on the left and right sides of the Bailey frames (22) respectively, and the tops and bottoms of the two channel steels (11) respectively abut against the inner sides of the upper and lower cross beams of the Bailey beam (2); the channel steels (11) are of the same height as the Bailey frames (22); a plurality of pairs of first square steels (12) are welded to the front and rear ends of the two channel steels (11) and are arranged at intervals along the vertical direction of the channel steels (11); and two pairs of second square steels (13) are welded to the Bailey beam (2) and are located at positions aligned with the tops and bottoms of the two channel steels (11).

2. The reinforcement structure of the steel trestle connection node according to claim 1 is characterized in that: The Bailey plates (21) between adjacent Bailey beams (2) are connected by bolts.

3. The reinforcement structure of the steel trestle connection node according to claim 1 is characterized in that: The upper and lower ends of the channel steel (11) are respectively welded to the upper and lower cross beams of the Bailey beam (2).

4. The reinforcement structure of the steel trestle connection node according to claim 1 is characterized in that: The upper and lower cross beams of the Bailey beam (2) are both channel steel structures, and the second square steel (13) is embedded in the groove of the cross beam.

5. The reinforcement structure of the steel trestle connection node according to claim 1 is characterized in that: The upper end of the distribution beam (3) is welded to the lower cross beam of the Bailey beam (2).

6. The reinforcement structure of the steel trestle connection node according to claim 1, characterized in that: The first square steels (12) and the second square steels (13) are respectively arranged in pairs of two; the number of pairs of first square steels (12) welded to the front and rear ends of the two channel steels (11) and arranged along the vertical intervals of the channel steels (11) is two.

7. The reinforcement structure of the steel trestle connection node according to claim 6, characterized in that: The material of the channel steel (11), the first square steel (12) and the second square steel (13) are all Q235B; The channel steel (11) is a 10 mm x 1300 mm channel steel, the notches of the two channel steels (11) face outwards, and the distance between the two channel steels (11) is 100 mm; The first square steel (12) is a square steel of 160 mm×10 mm×160 mm, and the spacing between the first square steels (12) in pairs is 110 mm; the vertical spacing between the two pairs of first square steels (12) is 600 mm; The second square steel (13) is a square steel of 40 mm×10 mm×85 mm, and the spacing between the pairs of second square steels (13) is 91 mm.

8. The reinforcement structure of the steel trestle connection node according to claim 1, characterized in that: The surfaces of the channel steel (11), the first square steel (12) and the second square steel (13) are all coated with polyurethane anti-corrosion paint.

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