Bailey beam with combined section for beam type support

Abstract

The utility model provides a bailey beam with a combined cross section for a beam type support, which belongs to the technical field of bailey beams and comprises two chord members, a plurality of reinforcing ribs and a plurality of reinforcing ribs, the two chord members comprise two steel channels, and stiffening ribs are welded on the lateral sides of the chord members, so that the vertical cross sections of the chord members are in two opposite E shapes; and the plurality of vertical rods are welded between the two chord members and between the two chord members. The Bailey beam has the advantages that the female connector part and the male connector part are both arranged on one side of the Bailey beam, the first female connector in the female connector part and the vertical rod are integrally formed and connected, and compared with the arrangement mode that the female connector part and the male connector part are arranged on the single side, slope breaking does not need to be carried out on a vertical rod profile, and the construction cost is reduced. By welding the stiffening ribs on the inner side of the chord member channel steel and welding the stiffening ribs with the second female joint, on one hand, the out-of-plane turning radius of the chord member is increased, so that the out-of-plane slenderness ratio of the chord member is reduced, and the out-of-plane bearing capacity of the chord member is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bailey beam, especially to a bailey beam with combined section for beam support. BACKGROUND

[0002] Bailey beam, also known as bailey bridge or fabricated steel bridge, is a modular bridge structure assembled by prefabricated steel components, and the core of bailey beam is a standardized truss unit, which mainly includes the following components: upper and lower chord, vertical rod and diagonal brace welded basic truss structure, and joint structure formed by connecting multiple truss structures longitudinally or transversely to form different spans and widths.

[0003] According to the search of the utility model with the announcement number CN221371824U, the bailey piece includes upper chord, lower chord, left vertical rod and right vertical rod fixedly connected with the upper chord and the lower chord at the upper and lower ends, and a middle vertical rod fixedly connected with the upper chord and the lower chord at the upper and lower ends between the left vertical rod and the right vertical rod; the middle part of the left vertical rod is fixedly connected with two left mounting plates arranged in the front and rear directions, and the left mounting plate extends inwardly from the left vertical rod.

[0004] In the above-mentioned utility model and prior art, the conventional setting is to add female joints and male joints at both ends of the bailey beam, and the female joints and male joints are arranged on one side to facilitate the connection direction of the bailey beam during span connection, but this setting has the following problems: 1. To facilitate the connection of the female joint and the chord, the vertical rod welded between the upper chord and the lower chord needs to be broken, which weakens the supporting capacity of the vertical rod for the connected chord and does not fully utilize the mechanical properties of the vertical rod; 2. The female joints and male joints are asymmetrically distributed on one side, and the chord adopts a channel steel structure, so that the effective transmission of the force of the bailey joint after span connection is asymmetric, and the stability and bearing capacity of the double-spliced chord on one side are poor. UTILITY MODEL CONTENTS

[0005] Therefore, the embodiments of the utility model provide a bailey beam with combined section for beam support to solve the problem of poor bearing capacity of the bailey chord caused by the fact that the conventional bailey beam does not fully utilize the material mechanical properties in the structural connection mode.

[0006] The embodiment of the utility model provides a kind of for beam support using the combined section bailey beam, comprising: two chord, it includes two channel steel, the lateral welding of chord has stiffener, so that the vertical section of chord is two mutually back letter E type;Multiple vertical rods are welded between two chord and two chord, and the connecting end of the vertical rod of one outer side chord is formed with four groups of female joint parts, four groups of female joint parts correspond to the end of two chord and are located in the same side position of chord, every female joint part includes first female joint and second female joint, first female joint and the side of vertical rod are integrally formed, and first female joint is welded on the first side of channel steel of chord, second female joint is welded in the groove of second side of channel steel of chord, first female joint and second female joint form U-shaped groove structure mutually, stiffener is welded with second female joint, first female joint is connected with vertical rod and chord mutually by simultaneously, so that the stress of bailey beam span connection can be conducted distribution to vertical rod and chord by joint part, to reduce the stress of chord;

[0007] Four groups of male joints are symmetrically arranged on the end of chord, and the male joint is fixed in the groove of the second side of channel steel and is inserted into the U-shaped groove structure formed by female joint part;

[0008] And multiple web members are distributed between chord and vertical rod.

[0009] Further, the front and rear sides of the vertical rod are both welded with reinforcing plates, and the reinforcing plates make the horizontal cross-section of the vertical rod a thickened T-shaped structure.

[0010] Further, the chord is provided with a first connecting plate, the vertical rod is provided with a second connecting plate, and the web members, the first connecting plate and the second connecting plate are all welded with each other.

[0011] Further, one end of the reinforcing plate is welded with the side edge close to the chord, and the other end of the reinforcing plate is welded with the second connecting plate.

[0012] Further, a connecting piece is arranged between the two channel steels of the chord.

[0013] Further, the end of the chord is integrally provided with an extension, and the extension is C-shaped and connected to three side surfaces of the male joint.

[0014] Further, the web members are rectangular steel pipes, and every four web members are connected to form a rectangle.

[0015] Further, the extension is provided with a through hole corresponding to the male joint, so that the bolt connecting the male joint and the female joint part can pass through.

[0016] Further, the reinforcing plate is in contact with one end of the chord and is T-shaped outwardly spreading to two sides.

[0017] The beneficial effects brought by the technical scheme provided by the embodiment of the utility model are: the utility model discloses a bailey beam for beam support using combined section, by setting the female joint part and the male joint part at the one side position of the bailey beam, and setting the first female joint in the female joint part and the vertical rod integrated molding connection, compared with the setting mode of setting the female joint part and the male joint part on one side, the vertical rod profile does not need to be broken, and the support effect of the vertical rod on the chord is indirectly strengthened.

[0018] By welding the stiffening rib to the inner side of the chord groove and welding with the second female joint, on the one hand, the chord plane outer rotation radius is improved, thereby reducing the chord plane outer slenderness ratio, and further improving the chord plane outer bearing capacity, and at the same time, due to the increase of the stiffening rib, the cross-sectional moment of inertia of the whole chord is improved, the deflection of the chord under stress is reduced, and the whole cross-sectional modulus is also increased, thereby improving the bending resistance of the chord, on the other hand, the second female joint is connected with the chord through the stiffening rib, so that the adjacent bailey beam can be evenly distributed to the chord and the vertical rod through the female joint part and the male joint part, realizing the high integration of the bailey beam structure and the perfect cooperation of the stress, thereby greatly improving the stability and safety of the whole bailey beam structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the front view of the utility model discloses a bailey beam for beam support using combined section;

[0020] Figure 2 is the structure perspective view of the utility model discloses a bailey beam for beam support using combined section;

[0021] Figure 3 is the utility model discloses a bailey beam for beam support using combined section Figure 1 Partial sectional view of A, A in it;

[0022] Figure 4 is the utility model discloses a bailey beam for beam support using combined section Figure 2 Structure enlarged view of B in it;

[0023] Figure 5 is the utility model discloses a bailey beam for beam support using combined section Figure 2 Structure enlarged view of C in it.

[0024] In the figure: 1, chord; 11, stiffening rib; 12, extension; 2, vertical rod; 21, reinforcing plate; 3, web; 31, first connecting plate; 32, second connecting plate; 4, female joint part; 41, first female joint; 42, second female joint; 5, male joint; 6, connecting piece. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the following will further describe the utility model embodiments combined with the drawings. The following introduces a relatively preferred one of multiple possible embodiments of the utility model, which aims to provide a basic understanding of the utility model, but is not intended to identify the key or decisive elements of the utility model or limit the scope of protection.

[0026] In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of example embodiments can have different values.

[0027] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0028] It should be noted that like reference numerals and letters refer to like items in the several views of the drawings, and as such, no further discussion on such items is deemed necessary. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not necessarily to scale.

[0029] It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] Please refer to Figures 1 to 5 The embodiment of the utility model provides a kind of for beam support using the combined section bailey beam, including two chord 1, multiple vertical rod 2, four groups female joint part 4, four groups male joint 5 and multiple web 3.

[0031] Wherein chord 1 adopts two channel steel double splicing, gap is reserved between two channel steels and connecting piece 6 is provided, to realize that double splicing channel steel constitutes single side chord 1, can improve the lateral stability of double splicing channel steel, to further improve the stable carrying capacity of chord 1.

[0032] In the embodiment, the chord 1 is laterally welded with the stiffening rib 11, so that the vertical section of the chord 1 is in the shape of two mutually opposite letters E.

[0033] Such design can significantly improve the bending and torsional properties of the chord 1, and enhance its carrying capacity. In actual application, in the face of larger vertical load and lateral wind force and other actions, the stiffening rib 11 can effectively prevent the chord 1 from local buckling, and ensure the overall stability of the Bailey beam.

[0034] For example, in bridge construction, when the Bailey beam is used as a temporary support structure, it needs to bear the load of the bridge body weight, construction equipment weight and other aspects. The optimized structure of the chord 1 can better adapt to these complex stress conditions, reduce the risk of deformation, and ensure construction safety.

[0035] In the embodiment, the vertical rod 2 is welded between the two chords 1 to form the basic structure of the Bailey beam with the chord 1. The vertical rod 2 is made of I-beam, which is extended into the gap of the chord 1 and welded with the two channel steels constituting the chord 1.

[0036] Four groups of female joint parts 4 are formed on the connecting end of the outer vertical rod 2 and the chord 1. The four groups of female joint parts 4 correspond to the end of the two chords 1 and are located on the same side of the chord 1. Each female joint part 4 includes a first female joint 41 and a second female joint 42. The first female joint 41 is integrally formed with one side of the vertical rod 2 and is welded on one channel steel wall of the chord 1. The second female joint 42 is welded in the groove on the side of the chord 1. The stiffening rib 11 is welded with the second female joint 42.

[0037] The first female joint 41 is connected with the vertical rod 2 and the chord 1 at the same time, so that the stress of the Bailey beam after span connection can be conducted and distributed to the vertical rod 2 and the chord 1 through the joint part, thereby reducing the stress of the chord 1.

[0038] This connection method cleverly disperses the external force to the vertical rod 2 and the chord 1, avoiding the traditional method of welding the joint on the chord 1 to make it bear excessive load alone, effectively improving the carrying capacity and reliability of the Bailey beam connection.

[0039] In the actual splicing process, when multiple Bailey beams are connected in span, this stress dispersion design can ensure that the overall structure is evenly stressed, reduce local stress concentration, and prolong the service life of the Bailey beam.

[0040] It should be noted that the four groups of male joints 5 are symmetrically arranged on the end of the chord 1 and cooperate with the female joint parts 4 to realize the quick and stable connection between the Bailey beams. The web 3 is distributed between the chord 1 and the vertical rod 2, which plays a connecting and supporting role, and enhances the overall stiffness and stability of the Bailey beam.

[0041] Further, the vertical rod 2 is welded with a reinforcing plate 21 on both sides, and the reinforcing plate 21 makes the transverse section of the vertical rod 2 into a thickened T-shaped structure.

[0042] This reinforcing design can improve the bending strength and stability of the vertical rod 2, so that it is not easy to deform when bearing forces from different directions.

[0043] It should be noted that the chord 1 is provided with a first connecting plate 31, and the vertical rod 2 is provided with a second connecting plate 32, and the web 3 and the first and second connecting plates 31 and 32 are all welded with each other.

[0044] Through this connection mode, the web 3 can form a whole with the chord 1 and the vertical rod 2, enhancing the structural stability of the Bailey beam and improving its carrying capacity.

[0045] In actual construction process, this welding connection is firm and reliable, which can ensure the cooperative force between the components and ensure the stability and safety of the Bailey beam under various working conditions.

[0046] In this embodiment, one end of the reinforcing plate 21 is welded with the side edge close to the chord 1, and the other end of the reinforcing plate 21 is welded with the second connecting plate 32, further enhancing the connection strength between the reinforcing plate 21 and the vertical rod 2 and the chord 1, so that the reinforcing plate 21 can better play its role of enhancing the strength of the vertical rod 2.

[0047] The end of the chord 1 is integrally provided with an extension 12, and the extension 12 is C-shaped and connected to three sides of the male joint 5, which can improve the tightness and reliability of the connection and prevent loosening or falling off during the connection process.

[0048] Further, the web 3 is a rectangular steel pipe, and every four webs 3 are connected to form a rectangle, which not only facilitates processing and manufacturing, but also provides good support effect and enhances the overall rigidity of the Bailey beam.

[0049] In another embodiment, the web 3 and the vertical rod 2 have a box girder or an I-shaped cross section, but after being combined with the chord 1 to form a Bailey beam structure system, the stress characteristics of various materials may not match each other, and each type of section is basically sized and may not be able to complete the matching. In order to meet the requirement of mutual matching, a plate is used to form a combined structure.

[0050] Further, the weak axis of the web 3 and the vertical rod 2 of the Bailey beam is located in the plane, and the strong axis is located out of the plane, and the stress is mainly controlled by the in-plane bearing capacity. The weak axis is strengthened, such as adding a plate between the wide faces of the rectangular pipe and the flanges of the I-shaped steel, to improve the in-plane rotation radius and reduce the in-plane slenderness ratio, thereby improving the in-plane bearing capacity.

[0051] In order to facilitate the connection of the male joint 5, the extension 12 is provided with a through hole corresponding to the male joint 5, so that the bolt connecting the male joint 5 and the female joint part 4 passes through, realizing the quick and convenient connection between the bailey beams.

[0052] In another embodiment, the reinforcing plate 21 is T-shaped outwardly extending from one end of the chord 1 towards two sides, which shape design can increase the contact area of the reinforcing plate 21 and the chord 1, improve the connection strength, and also facilitate the play of the strength of the reinforcing plate 21 itself.

[0053] The utility model discloses a bailey beam for beam support adopts the combined section, through the structure design of each component and its connecting mode are optimized, improved bailey beam's bearing capacity and stability, have facilitated the connection operation, can effectively satisfy the requirement of bailey beam performance in engineering.

[0054] In this article, the front, back, up, down and other orientation words are defined by the position of the components in the drawing and the position of the components relative to each other in the drawing, just to express the technical solution clearly and conveniently. It should be understood that they are relative concepts and can be changed accordingly according to different ways of use and placement. The use of the orientation words should not limit the scope of the application.

[0055] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0056] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A bailey beam for a beam support using a combined section, characterized by, The utility model relates to a kind of bearing structure of bailey beam, including: Two chord bars (1) including two channel steels, the lateral fixed connection of the chord bar (1) is connected with stiffener (11), so that the vertical section of the chord bar (1) is two mutually opposite letter E type; Multiple vertical bars (2) are fixedly connected between two the chord bar (1) and two the chord bar (1), one outside the vertical bar (2) is shaped with four groups of female joint parts (4) in the connecting end of the chord bar (1), four groups of the female joint part (4) correspond to the end of two the chord bar (1) and are located in the same side position of the chord bar (1), each the female joint part (4) includes first female joint (41) and second female joint (42), the first female joint (41) and the side of the vertical bar (2) are integrally formed, and the first female joint (41) is fixedly connected on the first side of the channel steel of the chord bar (1), the second female joint (42) is fixedly connected in the second side groove of the channel steel of the chord bar (1), the first female joint (41) and the second female joint (42) form U-shaped groove structure by juxtaposition, the second female joint (42) is fixedly connected with the stiffener (11), the first female joint (41) is connected by being mutually connected with vertical bar (2) and chord bar (1), so that the stress of bailey beam span connection can be conducted and distributed to the vertical bar (2) and the chord bar (1) by joint part, to reduce the stress of chord bar (1); Four groups of male joints (5) are symmetrically arranged at the end of the chord bar (1) relative to the female joint part (4), the male joint (5) is fixed in the second side groove of the channel steel and is inserted into the U-shaped groove structure formed by the female joint part (4); And multiple web bars (3) are distributed between the chord bar (1) and the vertical bar (2).

2. A bailey beam for use in a beam support having a composite section according to claim 1, characterized in that: The front and back sides of the vertical bar (2) are welded with reinforcing plates (21), and the reinforcing plates (21) make the horizontal section of the vertical bar (2) a thickened T-shaped structure.

3. A bailey beam for use in a beam support having a composite section as claimed in claim 2, characterised in that: The chord bar (1) is provided with a first connecting plate (31), the vertical bar (2) is provided with a second connecting plate (32), and the web bar (3), the first connecting plate (31) and the second connecting plate (32) are all welded with each other.

4. A bailey beam for use in a beam support having a composite section as claimed in claim 3, characterised in that: One end of the reinforcing plate (21) is welded with the side edge close to the chord bar (1), and the other end of the reinforcing plate (21) is welded with the second connecting plate (32).

5. A bailey beam for use in a beam support having a composite section according to claim 1, characterized in that: The chord bar (1) is provided with a connecting piece (6) between the two channel steels.

6. A bailey beam for use in a beam support having a composite section according to claim 1, characterized in that: The end of the chord bar (1) is integrally provided with an extension (12), and the extension (12) is C-shaped and connected to three side surfaces of the male joint (5).

7. A bailey beam for use in a beam support having a composite section according to claim 1, characterized in that: The web bar (3) is a rectangular steel pipe, and every four web bars (3) are connected to form a rectangle.

8. A bailey beam for use in a beam support having a composite section as claimed in claim 6, characterised in that: Perforations corresponding to the male joint (5) are formed in the extension (12) to allow bolts connecting the male joint (5) and the female joint part (4) to pass through.

9. A bailey beam for use in a beam support employing a composite section as claimed in claim 2, characterised in that: One end of the reinforcing plate (21) contacting the chord bar (1) is outwardly expanded to a T shape.

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