Bailey piece structure and Bailey beam type steel trestle

By setting snap-fit ​​grooves and snap-fit ​​parts on the vertical reinforcing chords and Bailey panels of the steel trestle bridge, and combining them with locking components for rapid assembly, the problems of long construction period and low efficiency caused by traditional welding are solved, achieving efficient and environmentally friendly construction.

CN223921968UActive Publication Date: 2026-02-17SHANGHAI HORIZON EQUIP ENG
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Patent Information

Application Number
CN202520422907.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-02-17
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

The existing on-site welding construction method for steel trestle bridges results in long construction periods, low efficiency, and is not environmentally friendly.

Method used

The vertical reinforcing chord and Bailey plate body are connected by a snap-fit ​​installation method using snap-fit ​​grooves and snap-fit ​​parts. They are then locked in place with locking components such as bolts or U-bolts, and fixed with mounting plates and fasteners, replacing traditional welding.

Benefits of technology

It shortens the construction period, improves construction efficiency, reduces construction costs, and can be recycled multiple times, which is in line with the concept of green construction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a bailey piece structure and a bailey beam type steel trestle, and the bailey piece structure comprises a vertical reinforcing chord member, a transverse reinforcing chord member and a transverse reinforcing chord member, the beret piece body comprises a first chord member and a second chord member opposite to the first chord member, and the first chord member and the second chord member are both provided with clamping parts matched with the clamping grooves; the clamping parts are clamped into the corresponding clamping grooves, so that the vertical reinforcing chord member is connected between the first chord member and the second chord member. According to the utility model, the site construction period can be greatly shortened, and the site construction efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to steel trestle construction technical field, in particular to a kind of bailey piece structure and bailey beam type steel trestle. BACKGROUND

[0002] In recent years, steel trestle is gradually favored by the construction industry due to its convenient construction, green environmental protection, high product quality and shortening of construction period, and is widely used in various fields of civil engineering, such as railway, highway, water conservancy, civil construction, power and other engineering fields.

[0003] At present, most of the reinforcing vertical poles are fixed on the bailey piece by on-site welding during the on-site assembly and construction of various structures of steel trestle. This traditional welding method prolongs the construction period, has great difficulty in welding quality control and low construction efficiency. In addition, a large amount of metal waste and welding fume is generated during the welding process, which not only increases the engineering cost, but also contradicts the green construction concept.

[0004] Therefore, it is necessary to provide a bailey piece structure and a bailey beam type steel trestle to solve the above problems existing in the prior art. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a bailey piece structure and a bailey beam type steel trestle to solve the technical problems of long construction period and low efficiency caused by traditional welding method in the prior art.

[0006] In order to solve the above technical problems, the utility model provides a bailey piece structure, comprising:

[0007] A vertical reinforcing chord is provided with a clamping groove at its end;

[0008] The bailey piece body comprises a first chord and a second chord arranged opposite to the first chord, and the first chord and the second chord are provided with clamping portions matched with the clamping grooves; the clamping portions are clamped into the corresponding clamping grooves to connect the vertical reinforcing chord between the first chord and the second chord.

[0009] The bailey piece structure provided by the utility model has the following beneficial effects:

[0010] By setting the clamping groove at the end of the vertical reinforcing chord, and setting the clamping part on the first chord and the second chord which is matched with the clamping groove, the vertical reinforcing chord is assembled between the first chord and the second chord by clamping the clamping part of the first chord and the second chord in the clamping groove at the two ends of the vertical reinforcing chord respectively, so as to provide the vertical support force for the bailey body. Compared with the traditional welding method, the assembly type installation of the clamping groove and the clamping part can quickly assemble the vertical reinforcing chord and the bailey body on the construction site, greatly shortens the construction period, improves the construction efficiency on site, and can be recycled many times, which is economical and environmentally friendly.

[0011] Further, the vertical reinforcing chord is provided with a first through hole penetrating the clamping groove, the clamping part is provided with a second through hole matched with the first through hole, and the locking part is respectively inserted into the first through hole and the second through hole to lock the vertical reinforcing chord between the first chord and the second chord. Its beneficial effect lies in that the locking part is respectively inserted into the first through hole and the second through hole, which can more firmly connect the vertical reinforcing chord and the bailey body together, avoid displacement of the vertical reinforcing chord under external force, and thus better improve the stability of the overall structure.

[0012] Further, the locking part includes a bolt or a U-shaped bolt.

[0013] Further, the first chord and the second chord are both spliced by two notched groove-shaped connecting rods with opposite notches, and one side of the connecting rod is formed as the clamping part matched with the clamping groove.

[0014] Further, two vertical reinforcing chords are respectively arranged on two sides of the bailey body.

[0015] Further, a fastening hole is formed on the rod of the vertical reinforcing chord.

[0016] Further, the installation plate is provided with a mounting hole matched with the fastener, and the fastener is sequentially inserted through the mounting hole and the fastening hole to connect the two vertical reinforcing chords.

[0017] Further, the bailey body further includes a plurality of vertical rods and inclined rods, the vertical rods are arranged at equal intervals between the first chord and the second chord, the vertical rods, the first chord and the second chord form two frames, and the plurality of inclined rods form two rectangular structures and are arranged in the corresponding frames.

[0018] Further, the bailey body further includes a connecting female head and a connecting male head, and adjacent bailey bodies are connected through the connecting female head and the connecting male head.

[0019] To solve the above technical problems, the utility model also provides a bailey beam type steel trestle, include: as above described bailey piece structure and support beam, bailey piece structure set up in support beam on.

[0020] The bailey beam type steel trestle has the beneficial effects of the bailey piece structure. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A front view schematic diagram of the bailey piece structure of the embodiment of the utility model is shown.

[0022] Figure 2 A side view schematic diagram of the bailey piece structure of the embodiment of the utility model is shown.

[0023] Figure 3 A side view schematic diagram of the bailey piece structure of the embodiment of the utility model is shown. Figure 2 An enlarged view of the middle A part.

[0024] Figure 4 A side view schematic diagram of the bailey piece structure of another embodiment of the utility model is shown.

[0025] Figure 5 A structure schematic diagram of the vertical reinforcing chord of the embodiment of the utility model is shown.

[0026] Figure 6 A structure schematic diagram of the bailey beam type steel trestle of the embodiment of the utility model is shown.

[0027] ELEMENT NUMBER EXPLANATION

[0028] 10, bailey piece structure, 1, vertical reinforcing chord, 11, clamping groove, 12, first through hole, 13, fastening hole, 2, bailey piece body, 21, first chord, 211, clamping part, 22, second chord, 23, vertical rod, 24, inclined rod, 3, locking part, 31, bolt, 32, U-shaped bolt, 4, mounting plate, 5, fastener, 20, support beam, 30, steel pipe pile, 40, distribution beam, 50, bridge deck slab. DETAILED DESCRIPTION

[0029] The embodiments of the utility model are described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification.

[0030] It is to be understood that the structures, proportions, sizes, and the like shown in the drawings accompanying the present specification are merely intended to assist in understanding and reading the present disclosure by those skilled in the art, and are not intended to limit the conditions under which the present utility model can be implemented, and therefore do not have technical significance. Any modification of structure, change of proportion relationship, or adjustment of size, which does not affect the effects and purposes that the present utility model can produce, should still fall within the scope of the technical content disclosed by the present utility model. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is limited only by the claims of the published patent. The terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application. Spatially relative terms, such as "upper", "lower", "left", "right", "below", "under", "bottom", "top", and the like, can be used herein to facilitate the description of the relationship of one element or feature to another element or feature as shown in the drawings.

[0031] In the present utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "holding" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] Furthermore, as used in this document, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the terms "comprise", "comprising", "include", "including", "contain", "containing", "have" and "having" indicate the presence of the stated features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0033] As Figures 1-5The embodiment of the utility model provides a kind of bailey structure 10, comprising: vertical reinforcing chord 1 and bailey body 2.Vertical reinforcing chord 1 is installed in the vertical position of bailey body 2, can make bailey body 2 when bearing larger bending moment and shear force, can better disperse and transfer load, and vertical reinforcing chord 1 provides vertical support for bailey body 2, improves the overall structural load-carrying capacity of bailey structure 10.

[0034] The end of vertical reinforcing chord 1 is provided with clamping groove 11.Bailey body 2 includes first chord 21 and second chord 22 which is arranged opposite to first chord 21.Both first chord 21 and second chord 22 are provided with clamping part 211 which is matched with clamping groove 11.Clamping part 211 is clamped into corresponding clamping groove 11 to connect vertical reinforcing chord 1 between first chord 21 and second chord 22.Both ends of vertical reinforcing chord 1 are provided with corresponding clamping groove 11, and clamping groove 11 arranged at two ends is clamped with clamping part 211 of first chord 21 and second chord 22 respectively, so as to install vertical reinforcing chord 1 between first chord 21 and second chord 22, provide vertical support force for bailey body 2, thereby improve the overall load-carrying capacity of bailey structure 10.

[0035] By arranging clamping groove 11 at both ends of vertical reinforcing chord 1, and arranging clamping part 211 matched with clamping groove 11 on first chord 21 and second chord 22, vertical reinforcing chord 1 is assembled between first chord 21 and second chord 22 by clamping part 211 of first chord 21 and second chord 22 in corresponding clamping groove 11, to improve vertical support force for bailey body 2.Compared with traditional welding method, the assembly type installation of clamping groove 11 and clamping part 211 can quickly assemble vertical reinforcing chord 1 and bailey body 2 on site, greatly shorten the construction period, improve the construction efficiency on site, and can be recycled many times, which is economic and environmental.

[0036] As Figures 2-3 shown and in combination with reference Figure 5The utility model discloses some embodiments of the utility model, the belay sheet structure 10 still includes locking portion 3. The end of vertical reinforcing chord 1 is provided with the first through -hole 12 of through clamping groove 11. Clamping portion 211 is provided with the second through -hole of cooperation with first through -hole 12. Through locking portion 3 respectively passes into first through -hole 12 and second through -hole, to lock vertical reinforcing chord 1 between first chord 21 and second chord 22. Further, in order to more firmly connect vertical reinforcing chord 1 with the belay sheet body 2 together, prevent vertical reinforcing chord 1 from shifting under the action of external force between first chord 21 and second chord 22, better play the vertical support force effect of vertical reinforcing chord 1, set up locking portion 3 and lock vertical reinforcing chord 1 between first chord 21 and second chord 22. Exemplarily, the shape of clamping groove 11 is fish mouth shape.

[0037] As Figure 2 And Figure 5 The utility model discloses some embodiments of the utility model, locking portion 3 includes bolt 31. Through bolt 31 respectively passes through the first through -hole 12 of the end of vertical reinforcing chord 1 setting and the second through -hole of the clamping portion 211 of first chord 21 or the second through -hole of the clamping portion 211 of second chord 22, uses first nut and tightens, with first chord 21 and second chord 22 between fixed mounting of vertical reinforcing chord 1, thereby better external load bearing. The combination form of bolt 31 and first nut is further used to reinforce vertical reinforcing chord 1 and the belay sheet body 2, and installation and dismounting are facilitated, and the time cost of on -the -spot construction is reduced. Exemplarily, four bolts 31 are used to lock.

[0038] As Figure 4 And Figure 5 The utility model discloses some embodiments of the utility model, locking portion 3 includes U-shaped bolt 32. Through U-shaped bolt 32 respectively passes through the first through -hole 12 of the end of vertical reinforcing chord 1 setting and the second through -hole of the clamping portion 211 of first chord 21 or the second through -hole of the clamping portion 211 of second chord 22, uses second nut and tightens, with first chord 21 and second chord 22 between fixed mounting of vertical reinforcing chord 1. U-shaped bolt 32 has higher tensile and shear strength, can bear larger load, therefore adopts the combination form of U-shaped bolt 32 and second nut, is applicable to the steel trestle needing high bearing capacity, thereby improves the stability of the belay sheet structure 10 whole, and installation and dismounting are facilitated, and convenient to use. Exemplarily, two U-shaped bolts 32 are used to lock.

[0039] As Figure 2 And Figure 3As shown in the drawings, in some embodiments of the utility model, the first chord 21 and the second chord 22 are both spliced by two groove-shaped connecting rods with opposite notches. That is, the two groove-shaped connecting rods are spliced back to back to form the first chord 21 or the second chord 22. One side of the connecting rod is configured as a clamping part 211 that is adapted to the clamping groove 11. By clamping one side of the connecting rod into the corresponding clamping groove 11, the vertical reinforcing chord 1 and the belay piece body 2 are assembled. Exemplarily, the connecting rod is a channel steel.

[0040] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, in some embodiments of the utility model, the two vertical reinforcing chords 1 are respectively arranged on the two sides of the belay piece body 2. Specifically, the first chord 21 is spliced by a first connecting rod and a second connecting rod, the second chord 22 is spliced by a third connecting rod and a fourth connecting rod, and the first connecting rod and the third connecting rod are arranged opposite to each other, and the second connecting rod and the fourth connecting rod are arranged opposite to each other. The clamping grooves 11 at both ends of one vertical reinforcing chord 1 are respectively clamped into one side of the first connecting rod and the third connecting rod, and the clamping grooves 11 at both ends of the other vertical reinforcing chord 1 are respectively clamped into one side of the second connecting rod and the fourth connecting rod, so as to respectively install the two vertical reinforcing chords 1 on the two sides of the belay piece body 2.

[0041] As shown in the drawings, Figure 5 As shown in the drawings, in some embodiments of the utility model, fastening holes 13 are formed on the rod of the vertical reinforcing chord 1. Exemplarily, two fastening holes 13 are respectively formed on the two side surfaces of the rod of the vertical reinforcing chord 1.

[0042] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, in some embodiments of the utility model, the belay piece structure 10 further comprises a mounting plate 4 and a fastener 5. The mounting plate 4 is provided with mounting holes adapted to the fastener 5. The two vertical reinforcing chords 1 are connected by sequentially passing the mounting holes and the fastening holes 13 through the fastener 5. The vertical reinforcing chords 1 mounted on the two sides of the belay piece body 2 are fixed by the cooperation of the mounting plate 4 and the fastener 5, which further improves the stability of the whole belay piece structure 10. Moreover, the mounting plate 4 and the fastener 5 are easy to assemble, disassemble, and shorten the construction period. Specifically, two mounting plates 4 and four fasteners 5 are used to cooperate to fasten the two vertical reinforcing chords 1 on one side of the rod of the vertical reinforcing chord 1, which improves the stability of the whole structure. Exemplarily, the mounting plate 4 is a steel plate.

[0043] As shown in the drawings, Figure 1As shown, some embodiments of the utility model, the bearers body 2 still include several vertical rod 23 and diagonal 24. Vertical rod 23 is set apart at first chord bar 21 and second chord bar 22 between. Vertical rod 23 and first chord bar 21 and second chord bar 22 enclose two frames. Several diagonal 24 is formed into two rectangular structures, is set in the corresponding frame respectively. Exemplarily, three vertical rod 23 is set apart at first chord bar 21 and second chord bar 22 between, enclose two rectangular frames, four diagonal 24 constitutes a rectangular structure, four diagonal 24 constitutes another rectangular structure, the end of two rectangular structures is set in rectangular frame respectively, is formed into the overall structure of bearers body 2, plays the bearing role.

[0044] As shown, Figure 1 The utility model provides some embodiments of the utility model, bearers body 2 still include connecting female head and connecting male head. Adjacent bearers body 2 is connected through connecting female head and connecting male head. Specifically, the both ends of first chord bar 21 are provided with connecting female head and connecting male head respectively, and the both ends of second chord bar 22 are also provided with connecting female head and connecting male head respectively, so that a plurality of bearers structures 10 can be connected during the construction of steel trestle.

[0045] As shown, Figures 1-5 The utility model provides an embodiment further provides a kind of bearers beam steel trestle, comprising: above-mentioned bearers structure 10 and support beam 20 described in the application. Bearers structure 10 is arranged on support beam 20. Bearers beam steel trestle further include steel pipe pile 30, distribution beam 40 and bridge deck 50. Two steel pipe piles 30 as bottom support, correspondingly, load-bearing beam 20 is arranged on two steel pipe piles 30 respectively, a plurality of bearers structures 10 are installed on load-bearing beam 20, distribution beam 40 is installed above bearers structure 10, and bridge deck 50 is laid on distribution beam 40, so as to be formed into bearers beam steel trestle, as temporary steel trestle use.

[0046] In summary, in view to the technical problems of long construction period, low efficiency and difficult to guarantee construction quality caused by the traditional welding method in the prior art, the utility model provides a kind of bailey piece structure and bailey beam type steel trestle, by setting the clamping groove in the end of vertical strengthening chord, and first chord and second chord are provided with the clamping part matched with clamping groove, by the clamping of the clamping part of first chord and second chord in corresponding clamping groove respectively, vertical strengthening chord is assembled between first chord and second chord, and support force in vertical direction is provided for bailey piece body;Further, first through hole is set in the both ends of vertical strengthening chord respectively, and the clamping part is provided with the second through hole matched with first through hole, by the design locking part is inserted into first through hole and second through hole respectively and locked, so that vertical strengthening chord is more firmly assembled between first chord and second chord, and displacement of vertical strengthening chord under external force is avoided;More further, locking part adopts bolt or U-shaped bolt, and assembly mode is simple and easy to operate;And the cooperation form of mounting plate and fastener is used to fasten between vertical strengthening chord arranged on the both sides of bailey piece body, and it is convenient to install and disassemble, compared with traditional welding mode, the assembly type installation of clamping groove and clamping part, the locking mode of locking part and the cooperation mode of mounting plate and fastener can quickly assemble vertical strengthening chord and bailey piece body on site, so that the connection between vertical strengthening chord and bailey piece body is more reliable, the construction period is greatly shortened, the construction cost is reduced, and the construction quality on site can be controlled, the assembly structure can be recycled for many times, it is economic and environmental protection.So, the utility model effectively overcomes the shortcomings of prior art and has high industrial utilization value.

[0047] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A structure of a timber beam, characterized by, The utility model relates to a kind of vertical reinforcing stringers (1), the end portion of which is provided with clamping groove (11);Belly plate body (2) comprising first stringer (21) and second stringer (22) being oppositely arranged with the first stringer (21), the first stringer (21) and the second stringer (22) are provided with the clamping part (211) matched with the clamping groove (11);The clamping part (211) is clamped into the corresponding clamping groove (11), to connect the vertical reinforcing stringer (1) between the first stringer (21) and the second stringer (22). It further comprises locking part (3), the end portion of the vertical reinforcing stringer (1) is provided with first through hole (12) passing through the clamping groove (11), the clamping part (211) is provided with the second through hole matched with the first through hole (12), by the locking part (3) respectively entering the first through hole (12) and the second through hole, to lock the vertical reinforcing stringer (1) between the first stringer (21) and the second stringer (22). The locking part (3) comprises bolt (31) or U-shaped bolt (32).

2. The structure of the timbering according to claim 1, characterized in that The first stringer (21) and the second stringer (22) are spliced by two notched groove-shaped connecting rods, one side of the connecting rod is formed into the clamping part (211) matched with the clamping groove (11).

3. The structure of the timbering according to claim 2, characterized in that Two vertical reinforcing stringers (1) are respectively arranged on both sides of the belly plate body (2).

4. The structure of the timbering according to claim 1, characterized in that, Fastening hole (13) is formed on the rod of the vertical reinforcing stringer (1).

5. The structure of the timbering according to claim 1, characterized in that It further comprises mounting plate (4) and fastener (5), mounting hole matched with the fastener (5) is formed on the mounting plate (4), and fastener (5) is sequentially passed through mounting hole and the fastening hole (13) to connect two vertical reinforcing stringers (1).

6. The structure of the timbering according to claim 5, characterized in that The belly plate body (2) further comprises a plurality of vertical rods (23) and inclined rods (24), the vertical rods (23) are equidistantly arranged between the first stringer (21) and the second stringer (22);The vertical rod (23), the first stringer (21) and the second stringer (22) form two frames;A plurality of inclined rods (24) form two rectangular structures and are arranged in the corresponding frame.

7. The structure of the timbering according to claim 6, characterized in that The belly plate body (2) further comprises connecting female head and connecting male head, and adjacent belly plate bodies (2) are connected by the connecting female head and the connecting male head.

8. The structure of the timbering according to claim 1, characterized in that The utility model relates to a kind of vertical reinforcing stringers (1), the end portion of which is provided with clamping groove (11);Belly plate body (2) comprising first stringer (21) and second stringer (22) being oppositely arranged with the first stringer (21), the first stringer (21) and the second stringer (22) are provided with the clamping part (211) matched with the clamping groove (11);The clamping part (211) is clamped into the corresponding clamping groove (11), to connect the vertical reinforcing stringer (1) between the first stringer (21) and the second stringer (22).

9. The structure of the timbering according to claim 1, characterized in that, It further comprises locking part (3), the end portion of the vertical reinforcing stringer (1) is provided with first through hole (12) passing through the clamping groove (11), the clamping part (211) is provided with the second through hole matched with the first through hole (12), by the locking part (3) respectively entering the first through hole (12) and the second through hole, to lock the vertical reinforcing stringer (1) between the first stringer (21) and the second stringer (22).

10. A steel trestle of the type of a bailey beam, characterized in that The locking part (3) comprises bolt (31) or U-shaped bolt (32). The first stringer (21) and the second stringer (22) are spliced by two notched groove-shaped connecting rods, one side of the connecting rod is formed into the clamping part (211) matched with the clamping groove (11). Two vertical reinforcing stringers (1) are respectively arranged on both sides of the belly plate body (2). Fastening hole (13) is formed on the rod of the vertical reinforcing stringer (1). It further comprises mounting plate (4) and fastener (5), mounting hole matched with the fastener (5) is formed on the mounting plate (4), and fastener (5) is sequentially passed through mounting hole and the fastening hole (13) to connect two vertical reinforcing stringers (1). The belly plate body (2) further comprises a plurality of vertical rods (23) and inclined rods (24), the vertical rods (23) are equidistantly arranged between the first stringer (21) and the second stringer (22);The vertical rod (23), the first stringer (21) and the second stringer (22) form two frames;A plurality of inclined rods (24) form two rectangular structures and are arranged in the corresponding frame. The belly plate body (2) further comprises connecting female head and connecting male head, and adjacent belly plate bodies (2) are connected by the connecting female head and the connecting male head. The utility model relates to a kind of vertical reinforcing stringers (1), the end portion of which is provided with clamping groove (11);Belly plate body (2) comprising first stringer (21) and second stringer (22) being oppositely arranged with the first stringer (21), the first stringer (21) and the second stringer (22) are provided with the clamping part (211) matched with the clamping groove (11);The clamping part (211) is clamped into the corresponding clamping groove (11), to connect the vertical reinforcing stringer (1) between the first stringer (21) and the second stringer (22). It further comprises locking part (3), the end portion of the vertical reinforcing stringer (1) is provided with first through hole (12) passing through the clamping groove (11), the clamping part (211) is provided with the second through hole matched with the first through hole (12), by the locking part (3) respectively entering the first through hole (12) and the second through hole, to lock the vertical reinforcing stringer (1) between the first stringer (21) and the second stringer (22).