Fabricated steel trestle plate for bailey truss and structural system of fabricated steel trestle plate

Abstract

The utility model discloses an assembly type steel trestle plate for a bailey truss and a structural system of the assembly type steel trestle plate, and belongs to the technical field of steel trestles. The trestle plate comprises a trestle plate body, installation parts are arranged on the side edge of the trestle plate body at intervals, longitudinal connecting holes are formed in the side edges of the installation parts, and longitudinal connecting bolts are installed in the longitudinal connecting holes. The two adjacent trestle plate bodies in the length direction of the steel trestle deck are fixed together in the mode that longitudinal connecting bolts penetrate through the longitudinal connecting holes. The trestle plate body is formed by splicing, prefabricating and welding a plurality of groups of patterned H-shaped steel, a plate-girder integrated structure is realized, the strength, the friction force and the bearing capacity of the trestle plate can meet and exceed the use performance of a traditional steel trestle plate, and in the laying process of the steel trestle plate, the steel trestle plate only needs to be fixed through bolts, does not need to be welded on site and can be recycled, so that the cost is reduced. And the device can be recycled and locally replaced in a targeted manner, so that the cost is effectively saved, the resource recycling is realized, and the device has extremely high use value.

Description

Technical Field

[0001] The utility model relates to the technical field of steel trestle bridges, and more specifically to an assembled steel trestle bridge plate for Bailey frames and a structural system thereof. Background Art

[0002] During the construction of the steel trestle, the steel trestle is an important temporary project and plays an important role in the entire construction process. The connection between all steel trestle structures is very important.

[0003] The laying process of the existing steel trestle is usually to use ordinary steel plates to lay along the length direction of the steel trestle along the bridge deck, and to fix them with bolts on both sides of the steel trestle. After laying, the steel plate of the steel trestle is only constrained in the length direction, while the two adjacent trestle plates are not reasonably constrained. Therefore, when subjected to large vehicles, especially the torque generated when large vehicles turn, the steel plate of the plate is easily deflected by force; thus, a large gap is generated between the two adjacent trestle plates, thereby causing certain safety hazards.

[0004] At the same time, during the installation of the steel trestle system, as shown in Chinese patent CN202122253864.2 - Bailey steel trestle applied to deep foundation pit construction, the existing construction method has the following disadvantages: first, multiple I-beams are fixedly welded on the top of the Bailey frame, and secondly, the bridge deck steel plates are fixedly welded on the top of the I-beams. This construction method requires the I-beams and bridge deck steel plates to be laid in steps, and both use on-site welding processes, which has high construction costs and long working hours. In addition, the quality of on-site construction is uneven, and the deformation and material loss are large when flame cutting is used during dismantling;

[0005] Secondly, the two sides of the steel trestle are connected to the Bailey beam with bolts. Due to the vibration of construction vehicles, the bolts are prone to loosening and falling off over time. In addition, the steel trestle and the Bailey beam need to align their connection nodes to achieve bolt connection. When the connection nodes between the steel trestle I-beam and the Bailey beam are misaligned, they cannot be effectively fixed. Utility Model Content

[0006] 1. Technical problems to be solved by the utility model

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an assembled steel trestle board for Bailey frames and a structural system thereof. The steel trestle board of the utility model is prefabricated and welded by splicing a plurality of groups of patterned H-shaped steels, and its strength, friction and bearing capacity can meet and exceed the performance of existing steel trestle boards, realizing the integration of plates and beams, greatly simplifying the process of installing the board surface, and during the laying process of the steel trestle board, it only needs to be fixed by U-bolt clamps, without on-site welding, and is recyclable and reusable, and can be replaced locally for targeted purposes, effectively saving costs, realizing resource recycling, and having extremely high use value.

[0008] 2. Technical solution

[0009] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0010] The utility model discloses an assembled steel trestle board for Bailey frame, comprising a trestle board body, wherein mounting parts are arranged at intervals on the sides of the trestle board body, longitudinal connection holes are opened on the sides of the mounting parts, longitudinal connection bolts are installed in the longitudinal connection holes, and two trestle board bodies adjacent to each other along the length direction of the steel trestle bridge deck are fixed together by the longitudinal connection bolts passing through the longitudinal connection holes.

[0011] Furthermore, the trestle board body is made by welding a plurality of groups of patterned H-shaped steels which are laid flat.

[0012] Furthermore, railing connection parts are provided at the four corners of the trestle board body, and railing connection holes are opened on the sides of the railing connection parts. Railing fixing bolts are installed in the railing connection holes. The railing is placed on the side of the trestle board body and assembled with the railing connection holes of the trestle board body through the railing fixing bolts.

[0013] Furthermore, the interior of the mounting portion is configured as a cavity structure, and a hoisting hole is provided at the top of the inner cavity of the mounting portion.

[0014] Furthermore, the upper and lower parts of the inner cavity of the installation part are fixedly welded with lifting reinforcement ribs.

[0015] Furthermore, a positioning plate is provided in the middle of the inner cavity of the mounting portion, mounting holes are provided at intervals at the bottom of the inner cavity of the mounting portion, and mounting holes are also provided on the plate surface of the positioning plate.

[0016] Furthermore, a Bailey frame is provided at the bottom of the trestle board body, and a limiting device is provided at the connection between the trestle board body and the Bailey frame. The lower end of the limiting device passes through the Bailey frame, and the upper end of the limiting device is successively installed with a mounting part and a positioning plate, and is fixed to the positioning plate by mounting bolts.

[0017] Furthermore, a Bailey frame is provided at the bottom of the trestle board body, and an installation auxiliary part is provided at the connection between the trestle board body and the Bailey frame. The longitudinal section of the installation auxiliary part is U-shaped, the upper end of the installation auxiliary part is welded to the trestle board body, and the lower end of the installation auxiliary part is relatively fixed to the upper beam of the Bailey frame.

[0018] Furthermore, the installation auxiliary component may be a U-shaped hook or an L-shaped hook.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0021] (1) The steel trestle board of the utility model is made of a plurality of groups of patterned H-shaped steels spliced ​​and prefabricated and welded. Its strength, friction and bearing capacity can meet the use requirements of the steel trestle board. In addition, during the laying process of the steel trestle board, it only needs to be fixed by bolts, without the need for on-site welding. It is recyclable and can be recycled. It can be replaced locally in a targeted manner, which effectively saves costs and realizes the recycling of resources. It has extremely high use value.

[0022] (2) The utility model designs the railing connection hole as a lateral opening, so that the railing can be installed on the side of the trestle board body, thereby not occupying the usable area of ​​the upper part of the trestle board body, and at the same time, reserving more bridge deck operation space for the trestle board body without losing safety protection;

[0023] (3) The mounting portion of the utility model can be used as a connection node between two adjacent trestle board bodies, as a hoisting node for the trestle board body, and as a fixing node between the trestle board body and the Bailey frame, thereby achieving multifunctionality.

[0024] (4) The utility model can overlap the corresponding bridge deck structure system by laying multiple groups of trestle board bodies; the connection between the trestle board body and the Bailey frame is provided with installation auxiliary parts or limit devices, so that the trestle board body and the Bailey frame can be relatively fixed to avoid the trestle board body from shaking. The installation auxiliary parts are used together with the limit devices and the installation bolts to effectively avoid the loosening and falling off of the installation bolts, thereby improving safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of the trestle board body of the utility model;

[0026] Figure 2 It is a partial enlarged view of the installation part of the utility model;

[0027] Figure 3 It is a side view of the trestle board body of the utility model;

[0028] Figure 4 It is a top view of the trestle board body of the utility model;

[0029] Figure 5 This is a schematic diagram showing the splicing effect of the trestle board body of the utility model;

[0030] Figure 6 This is an enlarged view of the connection effect of the installation part of the utility model;

[0031] Figure 7 This is a rendering of the installation effect of the railing of the utility model;

[0032] Figure 8 This is an enlarged view of the partial installation effect of the railing of the utility model;

[0033] Fig. 9 This is a diagram of the fixed state of the trestle board body of the utility model;

[0034] Fig.10 This is a schematic diagram of the structure of the installation auxiliary component of the utility model.

[0035] In the figure: 1. trestle board body; 11. mounting part; 111. longitudinal connecting hole; 112. longitudinal connecting bolt; 113. lifting hole; 114. lifting reinforcement rib; 115. positioning plate; 116. mounting hole; 12. railing connecting part; 121. railing connecting hole; 122. railing fixing bolt; 2. Bailey frame; 3. limit device; 31. mounting bolt; 4. mounting auxiliary parts; 5. railing. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0037] Example 1

[0038] from Figure 1-6 It can be seen that the assembled steel trestle board for Bailey frame of the present embodiment comprises a trestle board body 1, the side of the trestle board body 1 is provided with mounting parts 11 at intervals, the side of the mounting parts 11 is provided with longitudinal connecting holes 111, and longitudinal connecting bolts 112 are installed in the longitudinal connecting holes 111. Two adjacent trestle board bodies 1 along the length direction of the steel trestle bridge deck are fixed together by the longitudinal connecting bolts 112 passing through the longitudinal connecting holes 111.

[0039] The trestle plate body 1 is made of a plurality of groups of patterned H-shaped steels which are laid flat and welded.

[0040] The steel trestle board of the utility model is made of multiple groups of patterned H-shaped steels spliced ​​and prefabricated and welded. Its strength, friction and bearing capacity can meet the use requirements of the steel trestle board. In addition, during the laying process of the steel trestle board, it only needs to be fixed by bolts, without the need for on-site welding. It is recyclable and can be recycled, and can be replaced locally in a targeted manner, which effectively saves costs and realizes the recycling of resources. It has extremely high use value.

[0041] The trestle board body 1 laid along the length direction of the steel trestle is fixed to the Bailey frame 2 by bolts or limiters;

[0042] The trestle board bodies 1 laid along the length direction of the steel trestle, two adjacent trestle board bodies 1 are fixed by longitudinal connecting bolts 112, which can effectively prevent the trestle board bodies 1 from deflecting due to torque, ensure that there are no gaps between the trestle board bodies 1, and effectively eliminate safety hazards.

[0043] Example 2

[0044] from Figure 7-8 It can be seen that in the present embodiment, a prefabricated steel trestle board for a Bailey frame is provided, and railing connecting parts 12 are provided at the four corners of the trestle board body 1, and railing connecting holes 121 are opened on the sides of the railing connecting parts 12, and railing fixing bolts 122 are installed in the railing connecting holes 121. The railing 5 is placed on the side of the trestle board body 1 and assembled with the railing connecting holes 121 of the trestle board body 1 through the railing fixing bolts 122.

[0045] The utility model designs the railing connection hole 121 as a lateral opening, so that the railing 5 can be installed on the side of the trestle board body 1, thereby not occupying the use area of ​​the upper part of the trestle board body 1, and at the same time, not losing safety protection, more bridge deck operation space is reserved for the trestle board body 1;

[0046] The interior of the mounting portion 11 is configured as a cavity structure, and a hanging hole 113 is provided at the top of the inner cavity of the mounting portion 11 .

[0047] Lifting reinforcement ribs 114 are fixedly welded to the upper and lower parts of the inner cavity of the mounting portion 11 .

[0048] A positioning plate 115 is disposed in the middle of the inner cavity of the mounting portion 11 , mounting holes 116 are spaced apart at the bottom of the inner cavity of the mounting portion 11 , and mounting holes 116 are also formed on the plate surface of the positioning plate 115 .

[0049] The mounting portion 11 can be used as a connection node between two adjacent trestle board bodies 1, as a hoisting node of the trestle board body 1, and as a fixing node between the trestle board body 1 and the Bailey frame 2, thereby achieving multifunctionality.

[0050] Example 3

[0051] from Figure 7-10 It can be seen that in the structural system of a Bailey frame assembled steel trestle board of this embodiment, a Bailey frame 2 is provided at the bottom of the trestle board body 1, and the corresponding bridge deck structural system can be overlapped by laying multiple groups of trestle board bodies 1;

[0052] from Figure 7-8 It can be seen that when the mounting portion 11 of the trestle board body 1 and the upper beam of the Bailey frame 2 are on the same horizontal line, a limiting device 3 is provided at the connection between the trestle board body 1 and the Bailey frame 2, the lower end of the limiting device 3 passes through the Bailey frame 2, and the upper end of the limiting device 3 is successively mounted with the mounting portion 11 and the positioning plate 115, and is fixed to the positioning plate 115 by mounting bolts 31.

[0053] from Figure 9-10 It can be seen that the bottom of the trestle board body 1 is supported by the Bailey frame 2. When the corresponding mounting portion 11 is not provided at the connection node between the upper beam of the Bailey frame 2 and the trestle board body 1, an installation auxiliary component 4 is provided at the connection between the trestle board body 1 and the Bailey frame 2. The longitudinal section of the installation auxiliary component 4 is U-shaped, the upper end of the installation auxiliary component 4 is welded to the trestle board body 1, and the lower end of the installation auxiliary component 4 is relatively fixed to the upper beam of the Bailey frame 2.

[0054] The mounting auxiliary part 4 can be a U-shaped hook or an L-shaped hook, so as to achieve relative fixation of the trestle board body 1 and the Bailey frame 2 to prevent the trestle board body 1 from shaking. At the same time, it can be used together with the limit device 3 and the mounting bolt 31 to effectively prevent the mounting bolt 31 from loosening or falling off, thereby improving safety and stability.

[0055] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An assembled steel trestle board for Bailey frame, comprising a trestle board body (1), characterized in that: The side of the trestle board body (1) is provided with a mounting portion (11) at intervals, and the side of the mounting portion (11) is provided with a longitudinal connection hole (111), and a longitudinal connection bolt (112) is installed in the longitudinal connection hole (111). Two adjacent trestle board bodies (1) along the length direction of the steel trestle bridge deck are fixed together by the longitudinal connection bolt (112) passing through the longitudinal connection hole (111).

2. The assembled steel trestle board for Bailey frame according to claim 1, characterized in that: The trestle board body (1) is made by welding a plurality of groups of patterned H-shaped steels which are laid flat.

3. The assembled steel trestle board for Bailey frame according to claim 1, characterized in that: The four corners of the trestle board body (1) are provided with railing connection parts (12), the side of the railing connection parts (12) is provided with railing connection holes (121), and railing fixing bolts (122) are installed in the railing connection holes (121). The railing (5) is placed on the side of the trestle board body (1) and assembled with the railing connection holes (121) of the trestle board body (1) through the railing fixing bolts (122).

4. The assembled steel trestle board for Bailey frame according to claim 3, characterized in that: The interior of the mounting portion (11) is arranged as a cavity structure, and a hanging hole (113) is provided at the top of the inner cavity of the mounting portion (11).

5. The assembled steel trestle board for Bailey frame according to claim 4, characterized in that: The upper and lower parts of the inner cavity of the installation part (11) are fixedly welded with lifting reinforcement ribs (114).

6. The assembled steel trestle board for Bailey frame according to claim 4, characterized in that: A positioning plate (115) is provided in the middle of the inner cavity of the mounting portion (11), mounting holes (116) are provided at intervals at the bottom of the inner cavity of the mounting portion (11), and mounting holes (116) are also provided on the plate surface of the positioning plate (115).

7. The structural system of the assembled steel trestle board for Bailey frame according to claim 6 is characterized by: A Bailey frame (2) is arranged at the bottom of the trestle board body (1), and a limiting device (3) is arranged at the connection between the trestle board body (1) and the Bailey frame (2). The lower end of the limiting device (3) passes through the Bailey frame (2), and the upper end of the limiting device (3) is successively mounted with a mounting portion (11) and a positioning plate (115), and is fixed to the positioning plate (115) by mounting bolts (31).

8. The structural system of the assembled steel trestle board for Bailey frame according to claim 1 is characterized by: A Bailey frame (2) is arranged at the bottom of the trestle board body (1), and an auxiliary mounting part (4) is arranged at the connection between the trestle board body (1) and the Bailey frame (2). The longitudinal section of the auxiliary mounting part (4) is U-shaped, the upper end of the auxiliary mounting part (4) is welded to the trestle board body (1), and the lower end of the auxiliary mounting part (4) is relatively fixed to the upper beam of the Bailey frame (2).

9. The structural system of the assembled steel trestle board for Bailey frame according to claim 8 is characterized by: The installation auxiliary component (4) may be a U-shaped hook or an L-shaped hook.

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