Plate bottom reinforcing structure of platform plate

Abstract

The utility model relates to the technical field of rail transit platform transformation, in particular to a platform plate bottom reinforcing structure, a reinforcing component is arranged between the cantilever side bottom of a cantilever plate and a structural edge beam, and the reinforcing component corresponds to the range of a newly-arranged platform door. The reinforcing component is fixedly connected with the cantilever plate and the structural boundary beam, and a mounting hole used for being connected with a newly-arranged platform door is formed in the cantilever plate. The utility model has the advantages of no wet processing, high efficiency, low cost, small structural damage and no influence on operation, and can be used at any time; the open-web truss can solve the problem of existing pipelines.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit platform reconstruction, in particular to a bottom reinforcement structure of a platform slab. Background Art

[0002] like Figure 1 As shown, the existing platform slab includes two parts: a structural side beam 1 and a cantilever slab 2. The cantilever slab 2 is a reinforced concrete load-bearing structure, on which is a non-load-bearing building surface layer 3. The load-bearing steel bars 4 of the cantilever slab 2 are upper skin cantilever steel bars. According to the actual situation, the cantilever length of the cantilever slab 2 extending from the structural side beam 1 is not fixed. The platform door may be fixed within the cantilever length range of the cantilever slab 2, or partly on the cantilever slab 2 and partly on the structural side beam 1.

[0003] Both the old and new platform doors are made by post-drilling process, and it is impossible to determine whether the stress-bearing steel bars 4 will be cut under the hole. If the stress-bearing steel bars 4 are cut during post-drilling, the stress-bearing performance of the cantilever plate 2 will be greatly affected, affecting the structural safety.

[0004] According to current regulations, if the update of equipment causes an increase in load or damages the original structure, structural inspection and identification and structural reinforcement must be carried out, which will have a significant impact on station operations. Therefore, how to design a special construction plan based on actual conditions to avoid large-scale structural reinforcement of the station is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the utility model is to provide a bottom reinforcement structure of a platform slab based on the above-mentioned deficiencies of the prior art, which effectively realizes the reinforcement of the existing platform slab during the reconstruction construction of the platform door by adding new bonded steel reinforcement to compensate for the loss of stress-bearing steel bars of the cantilever slab caused by the opening of the rear hole.

[0006] The purpose of this utility model is achieved by the following technical solutions:

[0007] A platform slab bottom reinforcement structure is used to reinforce the existing platform slab structure when a new platform door is installed, the existing platform slab structure includes a structural side beam, a cantilevered plate and a building surface layer, wherein the cantilevered plate is arranged on the structural side beam and one side plate end of the cantilevered plate is cantilevered out of the structural side beam, and the building surface layer is arranged above the cantilevered plate, characterized in that a reinforcement member is arranged between the bottom of the cantilevered side of the cantilevered plate and the structural side beam, the reinforcement member corresponds to the range of the newly installed platform door, the reinforcement member is fixedly connected to the cantilevered plate and the structural side beam, and the cantilevered plate is provided with a mounting hole for connecting with the newly installed platform door.

[0008] The reinforcing member is a plurality of separate T-shaped steels, one side of each of which is anchored to the structural side beam by an expansion bolt, and the top surface of each of the T-shaped steels is anchored to the newly installed platform door by a screw that penetrates the cantilever plate and the building surface layer.

[0009] The arrangement positions of the T-shaped steels correspond to the positions of the screw holes opened on the cantilever plate.

[0010] The reinforcement member is an integral triangular truss, which is assembled from a number of angle steels. One side of the integral triangular truss is anchored to the structural side beam by an expansion bolt, and the top surface of the integral triangular truss is fixed to the building surface layer by rear anchor bolts that penetrate the cantilever plate, and the newly installed platform door is anchored to the cantilever plate by rear anchor bolts.

[0011] The range of the integral triangular truss covers all installation holes of a single newly installed platform door.

[0012] The mounting holes include fixing holes and screw holes. The fixing holes are used for threading the newly installed platform door, and the screw holes are used for anchoring connection between the newly installed platform door and the cantilever plate.

[0013] The utility model has the advantages of: no wet processing, can be used immediately after being made, high efficiency, low cost, little damage to the existing structure, and no impact on operations; the hollow truss can solve the problem of existing pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an existing platform plate in the prior art;

[0015] Figure 2 It is a plan view of the first embodiment of the present utility model;

[0016] Figure 3 This is an elevation view of the first embodiment of the present utility model;

[0017] Figure 4 It is a plan view of the second embodiment of the utility model;

[0018] Figure 5 This is a vertical view of the second embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0020] like Figure 1-5As shown, the marks 1-15 in the figure respectively represent: structural side beam 1, cantilever plate 2, building surface layer 3, stress-bearing steel bar 4, old door fixing hole 5, new door threading hole 6, new door fixing point screw 7, T-shaped steel 8, expansion bolt 9, existing pipeline bridge 10, integral triangular truss 11, rear anchor bolt 12, angle steel 13, angle steel 14, rear anchor bolt 15.

[0021] Embodiment 1: Figure 2 and Figure 3 As shown, the bottom reinforcement structure of the platform slab in this embodiment is used to reinforce the cantilever slab 2, especially the reinforcement of the stress-bearing steel bars 4 of the cantilever slab 2 after the performance loss due to the post-opening process of the new platform door. The cantilever slab 2 is provided with old door fixing holes 5 for connecting with the existing old platform door.

[0022] Combination Figure 2 and Figure 3 As shown, in this embodiment, the slab bottom reinforcement structure is aimed at the situation where the cantilever length of the cantilever slab 2 is sufficient, the newly installed platform door is completely seated on the platform slab, and the existing pipeline bridge 10 under the slab has no positional influence.

[0023] The slab bottom reinforcement structure in this embodiment reinforces the cantilever slab 2 by adding T-shaped steel 8 between the cantilever slab 2 and the structural edge beam 1, thereby meeting the requirements of the platform slab for stress and structural reinforcement.

[0024] Specifically, a T-shaped steel 8 is arranged between the bottom of the cantilever end of the cantilever plate 2 and the structural side beam 1 to form a haunch structure. A hole is opened on one side of the T-shaped steel 8, and the expansion bolt 9 is used to fasten the structural side beam 1. The newly-installed platform door is fixedly connected to the T-shaped steel 8 by the rear anchor bolt, and the rear anchor bolt passes through the building surface layer 3 and the cantilever plate 2. At this time, the newly-installed platform door is set on the existing platform plate, and the haunch structure formed by the T-shaped steel 8 directly transfers the load of the newly-installed platform door from the plate to the structural side beam 1. For the platform plate and the structural side beam 1, there is no load change in this range (no pedestrians walk in the area where the platform door is set).

[0025] In this embodiment, if Figure 2 As shown, a new door threading hole 6 and a new door fixing hole 7 are provided on the cantilever plate 2, wherein the new door threading hole 6 is used for threading the new platform door, and the new door fixing hole is used as a new door fixing force hole for installing a new door fixing point screw 7, and the new door fixing point screw 7 can anchor the new platform door to the cantilever plate 2 and the T-steel 8 to ensure the structural stability of the new platform door.

[0026] like Figure 2 As shown, the arrangement positions of the multiple separate T-shaped steels 8 correspond to the positions of the new door fixing point screws 7 opened on the cantilever plate 2.

[0027] Embodiment 2: Figure 4 and Figure 5 As shown, the difference between this embodiment and the first embodiment is that: this embodiment is designed for the situation where the cantilever length of the cantilever plate 2 is sufficient, the new platform door is completely seated on the platform plate, but the existing pipeline bridge 10 under the plate is affected by the position.

[0028] Compared with the embodiment 1 which uses a separate T-shaped steel 8 to form an armpit structure between the structural side beam 1 and the cantilever plate 2, this embodiment uses an integral integral triangular truss 11 to form an armpit structure between the structural side beam 1 and the cantilever plate 2.

[0029] Specifically, combined Figure 4 and Figure 5 As shown, the integral triangular truss 11 is assembled from a plurality of angle steels 13 and a plurality of angle steels 14 , and the enclosed space formed by the integral triangular truss 11 can enclose the existing pipeline bridge 10 to achieve space avoidance of the existing pipeline bridge 10 .

[0030] Among them, an angle steel 13 on the side of the integral triangular truss 11 is fastened to the structural side beam 1 by an expansion bolt 9, and the two angle steels above the angle steel are fastened to the cantilever plate 2 and the building surface layer 3 by rear anchor bolts 15 respectively; at the same time, the newly installed platform door is fixedly connected to the cantilever plate 2 by rear anchor bolts 12.

[0031] At this point, the newly installed platform door is set on the existing platform slab, and the integral triangular truss 11 is firmly connected to the platform slab and the structural side beam 1. If all the forces on the platform slab in this range fail, the load of the newly installed platform door and the platform slab within the platform slab range will be directly transferred to the structural side beam 1 through the integral triangular truss 11. For the structural side beam 1, there is no load change in this range (no pedestrians walk in the area where the platform door is set).

[0032] like Figure 4 As shown, the arrangement positions of the integral triangular trusses 11 correspond to the positions of the new door fixing point screws 7 opened on the cantilever plate 2.

[0033] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A platform slab bottom reinforcement structure, used for reinforcing an existing platform slab structure when a new platform door is installed, the existing platform slab structure comprises a structural side beam, a cantilevered slab and a building surface layer, wherein the cantilevered slab is arranged on the structural side beam and one side end of the cantilevered slab cantilevers out from the structural side beam, and the building surface layer is arranged above the cantilevered slab, characterized in that: A reinforcement member is arranged between the bottom of the cantilever side of the cantilever plate and the structural side beam, and the reinforcement member corresponds to the range of the newly installed platform door. The reinforcement member is fixedly connected to the cantilever plate and the structural side beam, and the cantilever plate is provided with an installation hole for connecting with the newly installed platform door.

2. The platform slab bottom reinforcement structure according to claim 1, characterized in that: The reinforcing member is a plurality of separate T-shaped steels, one side of each of which is anchored to the structural side beam by an expansion bolt, and the top surface of each of the T-shaped steels is anchored to the newly installed platform door by a screw that penetrates the cantilever plate and the building surface layer.

3. The platform slab bottom reinforcement structure according to claim 2, characterized in that: The arrangement positions of the T-shaped steels correspond to the positions of the screw holes opened on the cantilever plate.

4. The platform slab bottom reinforcement structure according to claim 1, characterized in that: The reinforcement member is an integral triangular truss, which is assembled from a number of angle steels. One side of the integral triangular truss is anchored to the structural side beam by an expansion bolt, and the top surface of the integral triangular truss is fixed to the building surface layer by rear anchor bolts that penetrate the cantilever plate, and the newly installed platform door is anchored to the cantilever plate by rear anchor bolts.

5. The platform slab bottom reinforcement structure according to claim 4, characterized in that: The range of the integral triangular truss covers all installation holes of a single newly installed platform door.

6. The platform slab bottom reinforcement structure according to claim 1, characterized in that: The mounting holes include fixing holes and threading holes. The threading holes are used for threading the newly installed platform door, and the fixing holes are used for anchoring connection between the newly installed platform door and the cantilever plate.

Images