Novel bailey beam

Abstract

The utility model provides a novel bailey beam which comprises a plurality of bailey piece units, a first reinforcing vertical web member and a second reinforcing vertical web member, each bailey piece unit comprises an upper chord, a lower chord and two supporting assemblies, and the upper chord and the lower chord are arranged in parallel up and down. The two supporting assemblies are arranged between the upper chord and the lower chord in a supporting mode, one end of the upper chord and one end of the lower chord are provided with male heads, the other end of the upper chord and one end of the lower chord are provided with female heads, the male heads and the female heads are arranged in a matched mode, and plug pin holes are formed in the male heads and the female heads; the male heads and the female heads of the adjacent beret piece units are connected in an inserted mode, and bolts are inserted into the corresponding bolt holes to be fixed. The first reinforcing vertical web member and the second reinforcing vertical web member are arranged at the corresponding ends of the bailey beam respectively. The utility model has the advantages of simple structure, reasonable design, high shear resistance, stronger stress, less steel consumption, simple assembly and high efficiency.

Description

[Technical field]

[0001] The utility model relates to the technical field of Bailey beams, in particular to a novel Bailey beam. [Background technology]

[0002] Bailey plates, also known as Bailey frames, Bailey beams or trusses, can be used for highway bridges, gantry crane assembly, guide beams, bridge erection machines, hanging baskets, etc., as well as large bridge projects, cross-river and cross-sea projects, temporary access roads, and construction passages. Bailey plates are often used to erect Bailey beams (steel beam bridges). The Bailey plate technology is relatively mature and is produced by manufacturers with uniform models and specifications. It has the advantages of simple structure, convenient transportation, quick erection, large load capacity, good interchangeability, and strong adaptability. [Contents of the utility model]

[0003] The technical problem to be solved by the utility model is to provide a new type of Bailey beam, which has a simple structure, reasonable design, high shear resistance, stronger force bearing capacity, small amount of steel material, simple assembly and high efficiency.

[0004] The utility model is achieved in this way:

[0005] A novel Bailey beam comprises a plurality of Bailey sheet units, a first reinforcing vertical web member and a second reinforcing vertical web member, wherein the Bailey sheet unit comprises an upper chord, a lower chord and two support assemblies, wherein the upper chord and the lower chord are arranged in parallel up and down, and the two support assemblies are respectively supported and arranged between the upper chord and the lower chord, wherein one end of the upper chord and the lower chord is provided with a male head, and the other end is provided with a female head, wherein the male head and the female head are arranged in cooperation with each other, and each male head and each female head is provided with a latch hole; the male heads and the female heads between adjacent Bailey sheet units are plugged and connected with each other, and are fixed by inserting latches into corresponding latch holes;

[0006] Each of the support assemblies comprises a vertical web member and four diagonal web members, wherein the upper and lower ends of the vertical web member are respectively fixedly connected to the upper chord member and the lower chord member, and the four diagonal web members are arranged in groups of two diagonally upward or downward, and one end of each diagonal web member is fixedly arranged in the middle of the vertical web member, and the other end is fixedly connected to the upper chord member or the lower chord member;

[0007] Both ends of the first reinforcing vertical web bar are provided with Y-shaped connecting parts, and each of the Y-shaped connecting parts is provided with a pin hole. The first reinforcing vertical web bar is vertically arranged at one end of the female head of the Bailey beam, and the Y-shaped connecting part is sleeved on the outside of the female head at the corresponding end; both ends of the second reinforcing vertical web bar are provided with parallel connecting parts, and each of the parallel connecting parts is provided with a pin hole. The second reinforcing vertical web bar is vertically arranged at one end of the male head of the Bailey beam, and the parallel connecting part is sleeved on the outside of the male head at the corresponding end; the pin hole on the Y-shaped connecting part corresponds to the pin hole on the female head, and the pin hole on the parallel connecting part corresponds to the pin hole on the male head, and is fixed by inserting a pin into the corresponding pin hole.

[0008] Furthermore, the support assembly also includes two node plates, and each of the node plates is fixedly arranged on the front and rear sides of the connection between the vertical web member and the four diagonal web members.

[0009] Furthermore, the upper chord and the lower chord are both composed of double-jointed No. 10 channel steel.

[0010] Furthermore, the vertical web members and the diagonal web members are both No. 8 I-beams.

[0011] Furthermore, the Y-shaped connection portion of the first reinforced vertical web member is a zigzag steel plate.

[0012] The advantages of the utility model are:

[0013] In summary, the structure of the utility model is reasonably arranged, and reinforced vertical web bars are respectively arranged at both ends of the Bailey beam, which can enhance the overall shear resistance of the Bailey beam and make the force more solid; in addition, the reinforced vertical web bar accessories are composed of standard No. 8 I-beams with perforated zigzag steel plates at both ends, which can be spliced ​​on the outside of the male head or the inside of the female head, and are spliced ​​and reinforced by pins. The structure is simple and the assembly efficiency can be greatly improved; at the same time, each Bailey sheet unit only needs to be provided with two vertical web bars, and the amount of steel used is small, which can save the material usage of the Bailey beam.

Brief Description of the Drawings

[0014] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of a new type of Bailey beam of the utility model.

[0016] Figure 2 It is a schematic diagram of a Bailey plate unit of a new type of Bailey beam of the utility model.

[0017] Figure 3 It is a schematic diagram of a first reinforced vertical web member of a new type of Bailey beam of the utility model.

[0018] Figure 4It is a schematic diagram of the second reinforced vertical web member of a new type of Bailey beam of the utility model. [Specific implementation method]

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings and specific implementation methods. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figures 1 to 4 As shown, a new type of Bailey beam of the utility model comprises a plurality of Bailey sheet units 1, a first reinforcing vertical web member 2 and a second reinforcing vertical web member 3, the Bailey sheet unit 1 comprises an upper chord 11, a lower chord 12 and two support assemblies 13, the upper chord 11 and the lower chord 12 are arranged in parallel up and down, the two support assemblies 13 are respectively supported and arranged between the upper chord 11 and the lower chord 12, one end of the upper chord 11 and the lower chord 12 is provided with a male head 14, and the other end is provided with a female head 15, the male head 14 and the female head 15 are arranged in cooperation with each other, and each of the male head 14 and each of the female heads 15 is provided with a latch hole 4; the male heads 14 and the female heads 15 between adjacent Bailey sheet units 1 are plug-connected with each other, and are fixed by inserting a latch 5 into the corresponding latch hole 4;

[0022] Each of the support assemblies 13 includes a vertical web member 131 and four diagonal web members 132. The upper and lower ends of the vertical web member 131 are fixedly connected to the upper chord member 11 and the lower chord member 12, respectively. The four diagonal web members 132 are arranged in pairs diagonally upward or diagonally downward. One end of each diagonal web member 132 is fixedly arranged in the middle of the vertical web member 131, and the other end is fixedly connected to the upper chord member 11 or the lower chord member 12.

[0023] Both ends of the first reinforcing vertical web member 2 are provided with a Y-shaped connecting portion 21, and each of the Y-shaped connecting portions 21 is provided with a pin hole 4. The first reinforcing vertical web member 2 is vertically arranged at one end of the female head 15 of the Bailey beam, and the Y-shaped connecting portion 21 is sleeved on the outside of the female head 15 at the corresponding end; both ends of the second reinforcing vertical web member 3 are provided with a parallel connecting portion 31, and each of the parallel connecting portions 31 is provided with a pin hole 4. The second reinforcing vertical web member 3 is vertically arranged at one end of the male head 14 of the Bailey beam, and the parallel connecting portion 31 is sleeved on the inside of the male head 14 at the corresponding end; the pin hole 4 on the Y-shaped connecting portion 21 corresponds to the pin hole 4 on the female head 15, and the pin hole 4 on the parallel connecting portion 31 corresponds to the pin hole 4 on the male head 14, and is fixed by inserting the pin 5 into the corresponding pin hole 4.

[0024] In a specific implementation, a preferred embodiment is as follows: the support assembly 13 further includes two node plates 133 , and each of the node plates 133 is fixedly disposed at the front and rear sides of the connection between the vertical web member 131 and the four diagonal web members 132 .

[0025] In a specific implementation, a preferred embodiment is as follows: the upper chord 11 and the lower chord 12 are both composed of double-jointed No. 10 channel steels.

[0026] In a specific implementation, a preferred embodiment is as follows: the vertical web members 131 and the diagonal web members 132 are both No. 8 I-beams.

[0027] In a specific implementation, a preferred embodiment is as follows: the Y-shaped connection portion of the first reinforcing vertical web member 2 is a zigzag steel plate.

[0028] In another embodiment of the present invention, the specific structure of the novel Bailey beam is as follows:

[0029] The Bailey sheet unit uses two 3-meter double-jointed No. 10 channel steels to form the upper and lower chords, eight 1-meter No. 8 I-beam diagonal webs, and two 1.5-meter No. 8 I-beams to form the vertical webs. The ends are the same as traditional Bailey sheets, consisting of a female head and a male head, which are fixed by bolts when connected to form a standard Bailey sheet. The first and second reinforced vertical web accessories are added to the ends of the Bailey beam to enhance shear resistance. The vertical web accessories are composed of standard No. 8 I-beams with perforated zigzag steel plates or vertical steel plates at both ends. The reinforced vertical webs can be spliced ​​on the outside of the male head or the inside of the female head, and are spliced ​​and reinforced by bolts.

[0030] Taking the 321 type Bailey plate as an example, a Bailey plate is composed of two 3-meter double-jointed No. 10 channel steels, eight 1-meter No. 8 I-beams, and three 1.5-meter No. 8 I-beams.

[0031] The traditional and new Bailey beam models were established by Midas software, and the model connection, boundary conditions and load settings are as follows: the node is hinged, and the end condition is hinged. The materials and structural dimensions are consistent. The Bailey beam composed of three Bailey plate units is loaded with self-weight and the same uniformly distributed load (10kN / m). The calculation results show that the maximum stress of the traditional Bailey beam and the new Bailey beam both appear on the diagonal web of the end Bailey plate, and the maximum stress of the traditional Bailey beam is 41% larger than that of the new Bailey plate; the maximum deflection at mid-span: the new Bailey beam is 2.55mm, the traditional Bailey beam is 2.88mm, and the deflection of the traditional Bailey beam is 11.4% larger than that of the new one. In summary, the new Bailey beam has more advantages in terms of structural force and economy.

[0032] In summary, the structure of the utility model is reasonably arranged, and reinforced vertical web bars are respectively arranged at both ends of the Bailey beam, which can enhance the overall shear resistance of the Bailey beam and make the force more solid; in addition, the reinforced vertical web bar accessories are composed of standard No. 8 I-beams with perforated zigzag steel plates at both ends, which can be spliced ​​on the outside of the male head or the inside of the female head, and are spliced ​​and reinforced by pins. The structure is simple and the assembly efficiency can be greatly improved; at the same time, each Bailey plate unit only needs to be provided with two vertical web bars, and the amount of steel used is small. The more Bailey plate units are connected, the more the material usage of the Bailey beam is saved.

[0033] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A new type of Bailey beam, characterized in that: It comprises a plurality of Bailey sheet units, a first reinforcing vertical web bar and a second reinforcing vertical web bar, wherein the Bailey sheet unit comprises an upper chord bar, a lower chord bar and two support assemblies, wherein the upper chord bar and the lower chord bar are arranged in parallel up and down, and the two support assemblies are respectively supported and arranged between the upper chord bar and the lower chord bar, wherein one end of the upper chord bar and the lower chord bar is provided with a male head, and the other end is provided with a female head, wherein the male head and the female head are arranged in cooperation with each other, and each male head and each female head is provided with a latch hole; the male heads and the female heads between adjacent Bailey sheet units are plugged and connected with each other, and are fixed by inserting latches into corresponding latch holes; Each of the support assemblies comprises a vertical web member and four diagonal web members, wherein the upper and lower ends of the vertical web member are respectively fixedly connected to the upper chord member and the lower chord member, and the four diagonal web members are arranged in groups of two diagonally upward or downward, and one end of each diagonal web member is fixedly arranged in the middle of the vertical web member, and the other end is fixedly connected to the upper chord member or the lower chord member; Both ends of the first reinforcing vertical web bar are provided with Y-shaped connecting parts, and each of the Y-shaped connecting parts is provided with a pin hole. The first reinforcing vertical web bar is vertically arranged at one end of the female head of the Bailey beam, and the Y-shaped connecting part is sleeved on the outside of the female head at the corresponding end; both ends of the second reinforcing vertical web bar are provided with parallel connecting parts, and each of the parallel connecting parts is provided with a pin hole. The second reinforcing vertical web bar is vertically arranged at one end of the male head of the Bailey beam, and the parallel connecting part is sleeved on the outside of the male head at the corresponding end; the pin hole on the Y-shaped connecting part corresponds to the pin hole on the female head, and the pin hole on the parallel connecting part corresponds to the pin hole on the male head, and is fixed by inserting a pin into the corresponding pin hole.

2. A novel Bailey beam as claimed in claim 1, characterized in that: The support assembly further comprises two node plates, each of which is fixedly arranged at the front and rear sides of the connection between the vertical web member and the four diagonal web members.

3. A novel Bailey beam as claimed in claim 1, characterized in that: The upper chord and the lower chord are both composed of double-jointed No. 10 channel steels.

4. A novel Bailey beam as claimed in claim 1, characterized in that: The vertical web members and the diagonal web members are both No. 8 I-beams.

5. A novel Bailey beam as claimed in claim 1, characterized in that: The Y-shaped connection portion of the first reinforced vertical web member is a broken line steel plate.

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