Protective shed for steel box girder construction

Abstract

The utility model discloses a steel box girder construction protective shed which comprises a steel box girder construction protective shed body, and the steel box girder construction protective shed body comprises a protective platform, a suspension piece and a protective fence. The protective platform is hung on the bottom face of the steel box girder through the hanging pieces, and the protective fence is assembled on the edge of the top face of the protective platform so that the protective fence can be higher than the protective platform to form a partition for the protective platform. The tops of the hanging pieces protrude upwards out of the top face of the steel box girder to form protection sections, and the adjacent protection sections in the extending direction of the steel box girder are connected through transverse partitions, so that the transverse partitions and the protection sections form a protection structure located on the top face of the steel box girder. The requirement that beam bottom operation is difficult to construct can be met, and the safety of the beam bottom operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of steel box girder bottom surface construction, in particular to a steel box girder construction protection shed. Background Art

[0002] With the development of urban construction, steel box girder bridges are increasingly used. In the construction of the main city, especially at the ramp connection between the main road and the secondary road, steel box girder bridges are often used as transition sections for connection. Most of the bridge structures are special-shaped box structures, that is, "large and small heads-variable cross-section" structures. However, after the urban elevated steel box girder bridge is installed in place, the problem of how to perform beam bottom operations has become a technical problem that technicians in this field hope to solve.

[0003] Therefore, there is a need for a steel box girder construction protection shed that can make up for the difficulty of construction work at the bottom of the beam and ensure the safety of construction work at the bottom of the beam. Utility Model Content

[0004] In view of this, the purpose of the utility model is to overcome the defects in the prior art and provide a protective shed for steel box girder construction, which can make up for the difficulty in construction work at the bottom of the beam and ensure the safety of work at the bottom of the beam.

[0005] The utility model provides a steel box girder construction protection shed, comprising a steel box girder construction protection shed, wherein the steel box girder construction protection shed comprises a protection platform, a suspension member and a protection fence;

[0006] The suspension member suspends the protection platform on the bottom surface of the steel box beam, and the guardrail is installed on the edge of the top surface of the protection platform, so that the guardrail is higher than the protection platform to form a partition for the protection platform;

[0007] The top of the suspension member protrudes upward from the top surface of the steel box beam to form a protection section, and the adjacent protection sections in the extension direction of the steel box beam are connected by a transverse partition, so that the transverse partition and the protection section form a protection structure located on the top surface of the steel box beam.

[0008] Furthermore, the protection platform includes a base plate and a protection layer arranged on the top surface of the base plate, and the protection layer includes fireproof asbestos.

[0009] Furthermore, the protection platform also includes a truss supporting the bottom plate, the truss is fixed to the bottom plate through a truss connecting assembly, and the truss is divided into several groups.

[0010] Further, the truss is a sheet truss, and the truss connection assembly includes angle steel, truss connection steel plate and connection bolt I;

[0011] The angle steel is located between adjacent sheet trusses and is fixed by the connecting steel plate. The truss connecting steel plate spans the upper chord of the sheet truss and connects the angle steels located on both sides of the upper chord through connecting bolts I.

[0012] Furthermore, the suspension parts are located at the top of the truss and fixed by the suspension part connection assembly; the suspension parts assembled in a one-to-one correspondence with the number of trusses form a group of suspension rows, and the suspension rows are two groups arranged in the width direction of the steel box girder.

[0013] Further, the hanger connection assembly includes a diagonal brace, a suspension connection steel plate and a connection bolt II;

[0014] The diagonal brace connects the suspension member and the upper chord of the truss, and the diagonal brace, the suspension member and the upper chord of the truss together form a triangular structure.

[0015] Furthermore, the bottom of the suspension member is connected to the upper chord rod via a suspension connecting steel plate, and the suspension connecting steel plate spans the joint surface between the upper chord rod and the suspension member and is fixed via connecting bolts II.

[0016] Furthermore, the suspension member is fixed on the inner side of the periphery of the bottom plate along the width direction of the steel box beam, the guardrail is assembled on the periphery of the bottom plate along the width direction of the steel box beam, and a channel along the length direction of the steel box beam is formed between the guardrail and the suspension member.

[0017] Furthermore, a grab plate is fixed to the upper middle portion of the suspension member via bolt III, and the suspension member is suspended on the steel box girder via the grab plate.

[0018] The beneficial effects of the utility model are as follows: a steel box girder construction protection shed disclosed by the utility model, by being applied to bridge construction crossing existing vehicle or pedestrian passages, effectively solves the dilemma of being unable to perform beam bottom operations after the steel box girder is installed in areas with narrow sites and limited space; the construction method of the suspended steel box girder construction protection shed, because it is suspended on the steel box girder bridge deck and suspended below, does not affect the normal passage of vehicles or pedestrians under the bridge, and bridge bottom operations such as welding, bolt connection and anti-corrosion painting can be performed under the bridge as the installation progresses of the steel box girder bridge; and the suspended steel box girder construction protection shed has a stable and reliable structure, is easy to disassemble and assemble, and has good economic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 AA-direction structural diagram;

[0022] Figure 3 It is a schematic diagram of the bottom structure of the utility model;

[0023] Figure 4It is a structural schematic diagram of the utility model of the truss connecting the steel plate and the angle steel. DETAILED DESCRIPTION

[0024] Figure 1 It is a structural schematic diagram of the utility model. As shown in the figure, the steel box girder construction protection shed in this embodiment includes a protection platform, a suspension member 5 and a protection railing 8;

[0025] The suspension member 5 hangs the protection platform on the bottom surface of the steel box girder 001, and the space between the top surface of the protection platform and the bottom surface of the steel box girder forms a construction space, and the top surface of the protection platform is used as a construction site;

[0026] In the process of construction management of urban elevated steel box girder bridges, it has always been emphasized that aerial work must have a reliable operating platform and edge work must have protective measures for fastening safety belts. However, the construction site is often unable to meet the above conditions due to limited site or environmental conditions. Generally, the construction is carried out by lifting or lowering, and personnel move frequently during the construction process, which results in the operator wearing a safety belt but not being able to fix it correctly, which in turn creates a huge safety risk.

[0027] Therefore, in this solution, the guardrail 8 is installed on the edge of the top surface of the protection platform, so that the guardrail 8 is higher than the protection platform to form a barrier to the protection platform. The guardrail 8 is provided with a full-length safety belt hanging rod or rope in the length direction of the steel box girder 001 to improve the safety of high-altitude operations;

[0028] This solution is applied to the construction of bridges that cross existing vehicle or pedestrian routes, and effectively solves the dilemma of being unable to perform beam bottom operations after the steel box girder 001 is installed in areas with narrow sites and limited space. The construction method of the suspended steel box girder construction protection shed is used because it is suspended on the steel box girder 001 bridge deck and suspended below, which does not affect the normal passage of vehicles or pedestrians under the bridge. Bridge bottom operations such as welding, bolt connection and anti-corrosion painting can be carried out under the bridge as the installation progresses of the steel box girder 001 bridge. In addition, the structure of the suspended steel box girder construction protection shed is stable and reliable, easy to disassemble and assemble, and has good economic effect. It can not only solve the problem of construction operation platform, but also solve the problem of safety belt fastening for edge operations.

[0029] The following construction steps are also included:

[0030] S1. Complete the construction of connecting two adjacent steel box girders 001;

[0031] S2. Assemble the steel box girder construction protection shed on the ground;

[0032] S3. Hoist the steel box girder construction protection shed to the bottom surface of the steel box girder;

[0033] S4. Hoist the steel box girder construction protection shed onto the steel box girder 001;

[0034] S5. Operation on the bottom surface of steel box girder;

[0035] S6. Assemble the next steel box girder 001 on the previous steel box girder 001;

[0036] S7. Move the steel box girder construction protection shed to the steel box girder 001 construction waiting position;

[0037] S8. Operation on the bottom surface of steel box beam;

[0038] S9. Repeat steps S6-S8 until the construction of the elevated steel box girder is completed;

[0039] S10. Dismantle the protective shed for steel box girder construction.

[0040] By adopting the above-mentioned step-by-step assembly method of steel box girder 001, the structural reliability of the steel box girder 001 bridge body can be improved, and the instability of the terminal node structure of the long cantilever can be avoided. With the assembly of the steel box girder 001 bridge body, the auxiliary construction of the bottom of the steel box girder 001 is also completed, which greatly saves the construction time and shortens the construction period by multiples. Of course, this scheme is also suitable for the bottom surface construction of the small-span steel box girder 001 bridge, that is, after the steel box girder 001 is butt-jointed and assembled as a whole in the extension direction, the steel box girder construction protection shed of this scheme is uniformly arranged, which can also meet the construction of the bottom surface of the steel box girder without affecting ground traffic, and has high space utilization rate;

[0041] Of course, when constructing the bottom surface of a variable-section steel box girder, if the width of the variable section is not large, you can choose to extend the hanging assembly suspended on the steel box girder 001 bridge deck. When the width of the variable section is large, since this solution belongs to an assembled structure, you can choose to increase or remove the bottom protection platform to meet the construction standards of the bottom surface of the steel box girder, improve the structural reliability of the protective shed for the construction of the hoisting steel box girder, and improve the safety of workers' operations.

[0042] In this embodiment, the protection platform includes a base plate 1 and a protection layer arranged on the top surface of the base plate 1. The base plate 1 includes a wooden board, which has the advantages of being light in material and easy to construct. The protection layer includes fire-proof asbestos, which improves construction safety. In particular, the falling of solder will not damage the protection platform, thereby ensuring the walking of operators and preventing welding spatter from falling and injuring people, and ensuring construction safety. It should be understood that in this solution, the base plate 1 and the protection layer are both formed by block aggregation, which is easy to transport and disassemble, and conforms to the portability of prefabricated construction.

[0043] In this embodiment, the protection platform further includes a truss 2 supporting the bottom plate 1, wherein the bottom plate 1 covers the truss 2, the truss 2 is fixed to the bottom plate 1 through a truss 2 connecting assembly, and the truss 2 is a plurality of groups; the truss 2 is a sheet truss 2, and the sheet truss 2 is selected from any one of the prior art, which will not be described in detail here;

[0044] The truss 2 connection assembly includes angle steel 3, truss connection steel plate 4 and connection bolts Ⅰ. The angle steel 3 is located between adjacent sheet trusses 2 and is fixed by the connected steel plate. The truss connection steel plate 4 spans the upper chord of the sheet truss 2 and connects the angle steel 3 located on both sides of the upper chord through the connection bolts Ⅰ. This solution assembles the truss 2 and the protection platform into a whole by bolt connection, which is more conducive to prefabricated construction, transportation and storage, etc., and the truss 2 connection assembly also includes angle steel 3 to improve the connection reliability of adjacent trusses 2, meet the support requirements for the bottom plate 1, and improve construction safety.

[0045] In this embodiment, the suspension member 5 is located at the top of the truss 2 and is fixed by the suspension member connection assembly; the suspension members 5 that are assembled in the same number as the truss 2 and in a one-to-one correspondence form a group of suspension rows, and the suspension rows are two groups arranged in the width direction of the steel box girder 001; so that the protection platform can be suspended at the bottom of the steel box girder 001; improve the structural safety and stability;

[0046] More specifically, the hanger connection assembly includes a diagonal brace 6, a suspension connection steel plate and a connection bolt II;

[0047] The diagonal brace 6 connects the suspension member 5 and the upper chord of the truss 2 through the connecting bolts IV. The diagonal brace 6, the suspension member 5 and the upper chord of the truss 2 form a triangular structure, which has higher structural stability. The bottom of the suspension member 5 is connected to the upper chord through a suspension connecting steel plate. The suspension connecting steel plate is fixed across the joint surface of the upper chord and the suspension member 5 through the connecting bolts II. The structure of the suspension connecting steel plate is similar to Figure 4 The structure of the middle truss connecting steel plate 4 is the same, only the connection position is different, which will not be repeated here; the bolt assembly makes the structure more convenient to disassemble and assemble.

[0048] In this embodiment, in the width direction of the steel box girder 001, the suspension member 5 is located on the inner side of the protection platform. Furthermore, the suspension member 5 is fixed on the inner side of the periphery of the bottom plate 1 along the width direction of the steel box girder 001. The guardrail 8 is assembled on the periphery of the bottom plate 1 along the width direction of the steel box girder 001. A passage along the length direction of the steel box girder 001 is formed between the guardrail 8 and the suspension member 5. The guardrail 8 includes a guardrail body and a safety rope fixed on the top of the guardrail body. The safety rope runs through the length direction of the steel box girder 001, providing a closer safety belt hanging position for the protection platform, thereby improving construction safety.

[0049] In this embodiment, a grab plate 7 is fixed to the upper middle part of the suspension member 5 by bolt III, and the suspension member 5 is suspended on the steel box girder 001 by the grab plate 7; the grab plate 7 of this scheme is a horizontal plate perpendicular to the suspension member 5. During actual construction, the structure of the suspension position here can be strengthened to improve the reliability of the suspension. The grab plate 7 connected by bolts also has the characteristic of easy disassembly and assembly.

[0050] In this embodiment, the top of the suspension member 5 protrudes upward from the top surface of the steel box girder 001 to form a protection section 51. The adjacent protection sections 51 in the extension direction of the steel box girder 001 are connected by a cross partition, so that the cross partition and the protection section 51 form a protection structure located on the top surface of the steel box girder 001; the protection structure also includes a safety rope fixed on the top of the protection section 51, and the safety rope runs through the length direction of the steel box girder 001, providing a closer safety belt hanging position for the steel box girder 001, thereby improving construction safety.

[0051] This solution provides full-length hanging positions for safety belt assembly at the top and bottom of steel box girder 001, which improves construction safety and is more conducive to all-round construction of steel box girder 001, thereby improving construction efficiency. This solution has a wider range of applications, a simple assembly structure, is stable and reliable, has good economic effects, has the advantages of lightweight construction, is convenient to construct, and has guaranteed construction safety.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A steel box girder construction protection shed, characterized in that: It includes a steel box girder construction protection shed, which includes a protection platform, a suspension member and a protection railing; The suspension member suspends the protection platform on the bottom surface of the steel box beam, and the guardrail is installed on the edge of the top surface of the protection platform, so that the guardrail is higher than the protection platform to form a partition for the protection platform; The top of the suspension member protrudes upward from the top surface of the steel box beam to form a protection section, and the adjacent protection sections in the extension direction of the steel box beam are connected by a transverse partition, so that the transverse partition and the protection section form a protection structure located on the top surface of the steel box beam.

2. The steel box girder construction protection shed according to claim 1 is characterized by: The protection platform comprises a bottom plate and a protection layer arranged on the top surface of the bottom plate, and the protection layer comprises fireproof asbestos.

3. The steel box girder construction protection shed according to claim 2 is characterized by: The protection platform also includes a truss supporting the bottom plate, the truss is fixed to the bottom plate through a truss connection assembly, and the truss is divided into several groups.

4. The steel box girder construction protection shed according to claim 3 is characterized by: The truss is a sheet truss, and the truss connection assembly includes angle steel, truss connection steel plate and connection bolts I; The angle steel is located between adjacent sheet trusses and is fixed by the connecting steel plate. The truss connecting steel plate spans the upper chord of the sheet truss and connects the angle steels located on both sides of the upper chord through connecting bolts I.

5. The steel box girder construction protection shed according to claim 3 is characterized by: The suspension parts are located at the top of the truss and fixed by the suspension connection assembly; the suspension parts that are assembled in the same number as the trusses and in a one-to-one correspondence form a group of suspension rows, and the suspension rows are two groups arranged in the width direction of the steel box girder.

6. The steel box girder construction protection shed according to claim 5 is characterized by: The hanging connection assembly includes a diagonal brace, a hanging connection steel plate and a connection bolt II; The diagonal brace connects the suspension member and the upper chord of the truss, and the diagonal brace, the suspension member and the upper chord of the truss together form a triangular structure.

7. The steel box girder construction protection shed according to claim 5 is characterized by: The bottom of the suspension member is connected to the upper chord rod through a suspension connecting steel plate, and the suspension connecting steel plate spans the joint surface of the upper chord rod and the suspension member and is fixed by connecting bolts II.

8. The steel box girder construction protection shed according to claim 2 is characterized by: The suspension member is fixed on the inner side of the periphery of the bottom plate along the width direction of the steel box beam, and the guardrail is assembled on the periphery of the bottom plate along the width direction of the steel box beam. A channel along the length direction of the steel box beam is formed between the guardrail and the suspension member.

9. The steel box girder construction protection shed according to claim 1, characterized in that: A hanging catch plate is fixed to the upper middle part of the hanging member by bolt III, and the hanging member is hung on the steel box girder by the hanging catch plate.

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