Railway station platform reinforced concrete double-column canopy

Abstract

The utility model relates to the technical field of building canopy, concretely relates to a railway platform reinforced concrete double column canopy, is made into with reinforced framework, component shell and concrete core, and the railway platform reinforced concrete double column canopy includes multiple units, and the length of two sides of a column each one half span is an unit, and each unit includes upper layer intercolumnar plate, two intercolumnar longitudinal beams, two canopy columns and two lower overhanging plates, the upper layer intercolumnar plate is crossed and is fixed between two intercolumnar longitudinal beams, and the top surface of the upper layer intercolumnar plate is flush with the top surface of the intercolumnar longitudinal beam, the lower overhanging plate is fixed on the intercolumnar longitudinal beam, and the bottom surface of the lower overhanging plate is flush with the bottom surface of the intercolumnar longitudinal beam, and the intercolumnar longitudinal beam is fixed on the canopy column. The utility model solves the technical problem that the existing canopy construction is slow, the structure drainage is poor, the pipeline laying is difficult, and the maintenance is frequent and inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of building canopy technology, and in particular to a reinforced concrete double-column canopy for railway platforms. Background Technology

[0002] Currently, there are two main types of railway platform canopies: reinforced concrete canopies and light steel canopies. Reinforced concrete canopies require main body casting, plastering, and roof waterproofing, resulting in a long construction time. Light steel canopies, on the other hand, can be installed on-site, making construction very convenient. In the early stages of railway construction projects, a large number of light steel canopies were used. However, in later operations, it was found that light steel canopies suffered from poor corrosion resistance, weak wind resistance, high maintenance difficulty and cost, and significant pressure on train safety. Therefore, later railway construction largely adopted reinforced concrete canopies. Railway platform canopies have high safety requirements, and given that canopies are single-component structures with poor overall integrity, existing reinforced concrete canopies are all cast-in-place, resulting in long construction times and significant disruptions to railway operations. Railway platform canopies also have numerous electrical and data cabling, many of which are exposed on the canopy for easy maintenance. However, existing reinforced concrete canopies consist of multiple longitudinal beams, transverse beams, and slabs—a beam-slab structure. If the top surfaces of the beams and slabs are flush, the longitudinal and transverse beams at the bottom of the slab intersect, affecting cable installation and aesthetics. If the bottom surfaces of the beams and slabs are flush and made into inverted beams, the roof becomes uneven. The existing canopy is poorly drained, making it prone to blockages and leaks. Furthermore, as an open-air structure, the plaster layer, waterproofing layer, and drip edge are susceptible to aging, peeling, or seepage, requiring frequent maintenance. However, current canopy maintenance involves accessing the roof from both ends of the platform. The platform is 400-500 meters long, and some platforms even have high-voltage contact lines on the sides or above. This long route on the roof makes transporting materials and tools difficult, poses safety risks to personnel, and also impacts train safety. Therefore, according to current railway regulations, maintenance and repair of the platform canopy roof must be carried out during designated maintenance windows, requiring the railway line to be closed and power to be cut off, making maintenance extremely inconvenient.

[0003] Therefore, there is an urgent need for a rain shelter that is quick to construct, has good drainage, is convenient for pipeline laying, reduces maintenance, and is easy to maintain, in order to solve the above-mentioned technical problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a reinforced concrete double-column rain canopy for railway platforms, which aims to solve the technical problems of existing rain canopies such as slow construction, poor structural drainage, difficulty in laying pipelines, and frequent and inconvenient maintenance.

[0005] To achieve the above objectives, this utility model proposes a reinforced concrete double-column canopy for railway platforms, which is made of a steel frame, a component shell, and a concrete core. The reinforced concrete double-column canopy for railway platforms includes multiple units, with each unit consisting of half a span on each side of the column. Each unit includes an upper column slab, two column longitudinal beams, two canopy columns, and two lower cantilever slabs. The upper column slab is fixed between the two column longitudinal beams, and the top surface of the upper column slab is flush with the top surface of the column longitudinal beams. The lower cantilever slabs are fixed to the column longitudinal beams, and the bottom surface of the lower cantilever slabs is flush with the bottom surface of the column longitudinal beams. The column longitudinal beams are fixed to the canopy columns.

[0006] Furthermore, the lower cantilever slab has the longitudinal beam between the columns as its root and includes an outward cantilever section towards the platform edge and an inward cantilever section towards the platform. The bottom of the lower cantilever slab is the lowest point of the longitudinal beam between the columns, with the two outer ends being higher than the middle, and the outer end of the outer cantilever section being higher than the outer end of the inner cantilever section. The bottom surface of the lower cantilever slab is a streamlined curved surface.

[0007] Furthermore, an eaves board is provided at the end of the cantilever section, and the bottom of the eaves board is lower than the bottom of the outermost end of the cantilever section, forming a structural drip line.

[0008] Furthermore, a groove is formed between the inner cantilever section and the longitudinal beam between the columns.

[0009] Furthermore, the upper surface of the intercolumn plate is a streamlined slope, with the middle section being higher than the two ends, the middle section being thicker, and the two ends being thinner.

[0010] Furthermore, the longitudinal beam between the columns is provided with a half-access opening at the beam end, which connects with the half-access opening of the adjacent unit to form a complete access opening.

[0011] Furthermore, the steel reinforcement cage of the lower cantilever slab and the upper inter-column slab is arranged in a double-layer steel reinforcement pattern, including tensile main bars and compressive bars, and stiffening members are set between the tensile main bars and the compressive bars to form a truss stiffening rib cage.

[0012] Furthermore, the outer shell of the component is made of fine aggregate concrete, and a screen and a mesh are installed inside the outer shell. The screen and the mesh are connected to the steel reinforcement skeleton by tie bars, and anchor bars are installed between the screen and the concrete core.

[0013] The technical solution of this utility model has the following beneficial effects: This utility model relates to a reinforced concrete double-column canopy for railway platforms, constructed using a steel frame, component shell, and concrete core. The steel frame and component shell are fabricated in the factory, while the concrete core is cast integrally on-site, enabling rapid construction and minimizing disruption to railway operations. This utility model employs a slab structure canopy, with streamlined, self-waterproofing slab structures for the upper column slab and lower cantilever slab. The steep roof slope ensures smooth drainage, eliminating the need for roof leveling, waterproofing, and protective layer construction. The slab grooves facilitate the installation and maintenance of pipelines and lighting strips. Each bay between columns has an access panel for easy roof inspection. The column, beam, and slab structures are formed in one piece using a component shell with steel mesh, resulting in a smooth, durable surface that eliminates the need for a finishing layer. This utility model canopy offers quick construction, low cost, and significantly superior durability, aesthetics, and ease of maintenance compared to existing canopies. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a front view of the reinforced concrete double-column canopy for railway platforms according to this utility model; Figure 2 This is a side view of the reinforced concrete double-column canopy for railway platforms according to this utility model; Figure 3 This is a construction schematic diagram of the reinforced concrete double-column canopy for railway platforms according to this utility model; Figure 4 This is an enlarged schematic diagram of the outer shell of the reinforced concrete double-column canopy for railway platforms according to this utility model.

[0016] Explanation of icon numbers: 1. Canopy column; 2. Lower cantilever slab; 201. Outer cantilever section; 202. Inner cantilever section; 203. Eaves slab; 204. Drip line; 205. Slab groove; 3. Inter-column longitudinal beam; 301. Inspection opening; 4. Upper inter-column slab; 5. Column cup foundation; 6. Light steel support system members; A. Reinforcing steel cage; A01. Tension main reinforcement; A02. Compression reinforcement; A03. Stiffening member; B. Component shell; B01. Screen; B02. Mesh sheet; B03. Tie bar; B04. Anchor bar; C. Concrete core; D. Unit; D01. Column member; D02. Slab-beam composite member; D03. Slab member. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0019] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1-4As shown, a railway platform canopy is provided. This utility model proposes a reinforced concrete double-column canopy for railway platforms, which is made of a steel frame A, a component shell B, and a concrete core C. The reinforced concrete double-column canopy for railway platforms includes multiple units D, with each unit D consisting of half a span on each side of the column. Each unit D includes an upper column slab 4, two column longitudinal beams 3, two canopy columns 1, and two lower cantilever slabs 2. The upper column slab 4 is spanned and fixed between the two column longitudinal beams 3, and the top surface of the upper column slab 4 is flush with the top surface of the column longitudinal beams 3. The lower cantilever slabs 2 are fixed on the column longitudinal beams 3, and the bottom surface of the lower cantilever slabs 2 is flush with the bottom surface of the column longitudinal beams 3. The column longitudinal beams 3 are fixed on the canopy columns 1. A column cup foundation 5 is provided on the platform, and the lower end of the canopy column 1 is inserted into the column cup foundation 5, and the upper end is flush with the top surface of the lower cantilever slab 2. In this way, the canopy is divided into two layers: an upper layer of inter-column slab 4 and a lower layer of cantilever slab 2 by the inter-column longitudinal beam 3. Except for the inter-column longitudinal beam 3 at the base of the slab, the canopy has no other longitudinal or transverse beams. Both the bottom and top surfaces of the slab are very flat, realizing the transformation from the original beam-slab canopy to a slab canopy.

[0022] Preferably, the lower cantilever slab 2 is rooted at the longitudinal beam 3 between the columns, and includes an outer cantilever section 201 extending towards the platform edge and an inner cantilever section 202 extending towards the platform (generally 0.3-0.5 meters). The lowest point of the lower cantilever slab 2 is the bottom of the longitudinal beam 3 between the columns, with the two outer ends higher than the middle, and the outer end of the outer cantilever section 201 is higher than the outer end of the inner cantilever section 202. The thickness of the lower cantilever slab 2 is thicker at the root and thinner at the ends, with the thickest part generally controlled at 300mm and the thinnest part at 80mm. The slab surface has sufficient drainage slope, and the bottom surface of the lower cantilever slab 2 is made into a continuous streamlined curved surface.

[0023] Preferred, such as Figure 1 As shown, an eaves board 203 is provided at the end of the cantilever section 201. The bottom of the eaves board 203 is lower than the bottom of the outermost end of the cantilever section 201, forming a structural drip line 204.

[0024] Preferably, a trough 205 is formed between the inner cantilever section 202 and the longitudinal beam 3 between the columns, which serves as a light trough and a pipeline trough, where both high-voltage and low-voltage main lines can be laid. Furthermore, reflective light strips can be installed on the trough 205 for illumination, and a certain number of lighting boxes and pipelines can be pre-embedded in the outer cantilever section of the lower cantilever slab 2 to meet the illumination requirements of the canopy platform.

[0025] Preferably, the two ends of the upper column slab 4 can extend out of the column longitudinal beam 3 to form an upper cantilever section. In this embodiment, the upper cantilever section can extend 0.2-0.5 meters out of the outer edge of the column longitudinal beam 3. The upper column slab 4 is reinforced and stressed as a one-way simply supported slab. The slab is high in the middle and low at both ends, thick in the middle and thin at both ends. The thickest part is generally controlled at 300mm and the thinnest part is 100mm. The slab surface has sufficient drainage slope and the slab surface is made into a streamlined slope.

[0026] The lower cantilever slab 2 and the upper column inter-slab 4 of this utility model both have sufficient drainage slope. The roof waterproofing adopts structural self-waterproofing, and the waterproof performance of the slab surface can be enhanced by adding additives, additives, adjusting the mix ratio, and applying a layer of waterproof slurry coating when the concrete is poured and finished. Rainwater from the upper column inter-slab 4 falls onto the lower cantilever slab 2 through free drainage. Rainwater from the lower cantilever slab 2 is then discharged into the ground drainage ditch through the rainwater inlets at each column joint and the rainwater pipes buried inside the columns.

[0027] Preferably, the longitudinal beam 3 between columns has a half-access opening 301 at its end, which connects with the half-access opening 301 of the adjacent unit D to form a complete access opening 301. This access opening 301 is elliptical in shape, facilitating roof maintenance by personnel. The longitudinal beams 3 between the columns of two adjacent units D are connected as a whole during construction at the elliptical opening, but are completely separated when used as an expansion joint. The stress characteristics of the longitudinal beam 3 are primarily cantilevered stress radiating from the column to both ends, similar to a cantilevered-then-continuous stress configuration; when used as an expansion joint, it is completely cantilevered.

[0028] Furthermore, such as Figure 3 As shown, the reinforced concrete double-column canopy for railway platforms of this utility model is constructed by combining factory fabrication with on-site casting to achieve rapid construction. In each unit D, each column is a column component D01, the lower cantilever slab 2 and the longitudinal beam between columns 3 form a slab-beam composite component D02, and the upper column slab 4 is divided into three to four slab components D03. Thus, each unit D consists of two column components D01, two slab-beam composite components D02, and three to four slab components D03. Each component includes three parts: a steel reinforcement skeleton A, a component shell B (i.e., the concrete part outside the steel reinforcement skeleton A), and a concrete core C (i.e., the concrete wrapped by the steel reinforcement skeleton A). The steel reinforcement skeleton A and the component shell B are fabricated and constructed in the factory to form a hollow shell component. After each hollow shell component is transported to the site and installed in place, the concrete core C inside the component is poured as a whole.

[0029] The steel reinforcement cage A of the component is welded as a whole and has a certain rigidity. The overall rigidity of the steel reinforcement cage A can be improved by increasing the reinforcement ratio of the component, adding stiffening members A03, or setting it as a truss stiffening rib cage; for example Figure 3As shown, the steel reinforcement cage A of the lower cantilever slab 2 and the upper column slab 4 is arranged with double-layer steel reinforcement, including tensile main bars A01 and compressive bars A02. Stiffening members A03 are set between the tensile main bars A01 and the compressive bars A02 to form a truss stiffening rib cage. Similarly, the main bars, stirrups and added stiffening members A03 in the steel reinforcement cage A of the canopy column 1 and the column longitudinal beam 3 are connected to form a truss stiffening rib cage.

[0030] In this embodiment, the reinforcement ratio of the upper column slab 4, the column longitudinal beam 3, the canopy column 1 and the lower cantilever slab 2 is higher than that of the traditional ones. By adding stiffening members A03 and welding them into a truss stiffening rib skeleton, the structural bearing capacity of the large span and large cantilever components of the slab and beam and the requirement of no deformation during transportation and assembly can be achieved.

[0031] like Figure 4 As shown, the outer shell B refers to the concrete outside the steel reinforcement cage A. It serves as both a protective layer for the reinforcement and a finishing layer. The outer shell is approximately 2-4 cm thick and is made of high-grade fine aggregate concrete with a certain degree of toughness. Inside the outer shell B, there are screens B01 and mesh sheets B02. The screens B01 and mesh sheets B02 are reliably connected to the steel reinforcement cage A by tie bars B03. The number of tie bars B03 is sufficient to meet the pressure during the pouring of the concrete core C. The screen sheets B01 are reinforced with anchor bars B04 to strengthen the interlocking between them and the concrete core C. The construction of the outer shell B can be completed using methods such as bottom formwork feeding vibration method, plastering method, and plastering + outer formwork combination method.

[0032] In this embodiment, the outer shell B of column component D01 is approximately 3.5cm thick, and the outer shell B of slab and beam components is approximately 2.5cm thick. White cement and white gravel or other colored fine aggregate concrete are used. Both the screen B01 and the mesh B02 are made of steel. The construction of the outer shell B of column component D01 employs a bottom-mold feeding vibration method. First, steel mesh B02 is laid on all four sides of the steel reinforcement skeleton A of column component D01, and fixed to the steel reinforcement skeleton A with tie bars B03. The construction of the outer shell B is completed one side at a time. By rotating the steel reinforcement skeleton A of the component, the surface to be constructed is placed on a horizontal bottom surface, a specially made bottom mold is fitted, and a feeding pipe is installed. The construction of the outer shell of the component is completed by vibrating the bottom formwork while feeding the material. The construction of the outer shell B of the slab-beam composite component D02 and the slab component D03 adopts the method of plastering + outer formwork construction. The first step is to set a steel screen B01 with small gaps close to the steel reinforcement skeleton A and fix it. Tie bars B03 are set between the steel reinforcement skeleton A and the steel screen B01 for fixation. A layer of cement slurry is scraped on the steel screen B01 to seal the mesh. At the same time as sealing the mesh, a certain number of L-shaped anchor bars B04 are inserted. A steel mesh B02 is set on the outer periphery of the steel screen B01 and fixed to the tie bars B03. The outer formwork is put on the outer periphery of the steel mesh B02, and the concrete is poured by vibrating the formwork to complete the construction of the outer shell B of the component.

[0033] Furthermore, such as Figure 3 As shown, the hollow shell components are manufactured, transported to the site, and installed and poured: First, the column component D01 is hoisted and installed, directly inserted into the pre-constructed column cup foundation 5, and the position is corrected before pouring concrete to secure it; Second, the slab-beam composite component D02 is hoisted and installed in place, and the strength and stability of the concrete core C of the slab-beam composite component D02 are ensured during the pouring by setting up a specially designed light steel support system rod 6; Third, the slab component D03 is hoisted and installed in place, and the strength and stability of the concrete core C of the slab component D03 are ensured during the pouring by setting up a specially designed light steel support system rod 6.

[0034] The steel bars at the connection points between column member D01, slab-beam composite member D02, and slab member D03 are welded firmly, and additional steel bars are added to meet the bearing capacity requirements at the joints.

[0035] The concrete core C is poured in sequence as follows: cast-in-place column component D01, then cast slab-beam composite component D02, and finally complete the pouring of slab component D03. The lower cantilever slab 2 and the upper column inter-slab 4 can be made of lightweight aggregate concrete to reduce their self-weight.

[0036] This utility model relates to a reinforced concrete double-column canopy for railway platforms, constructed using a steel frame A, a component shell B, and a concrete core C. Since the steel frame A and component shell B are fabricated off-site, the resulting hollow components are transported to the site for installation, and then the concrete core C is poured as a whole. The railway platform canopy is 400-500m long. Apart from the canopy column foundations, the upper construction only involves installing the various hollow components and then pouring concrete. Following a flow-line construction organization, the upper construction can be completed in less than a month, making the construction very quick and simple. This utility model uses a slab structure canopy; the upper column slab and the lower cantilever slab adopt a streamlined, self-waterproof slab structure, with a large roof slope for smooth drainage. This invention eliminates the need for roof slope finding, leveling, waterproofing, and protective layer construction; the grooved panels facilitate the installation and maintenance of pipelines and light strips; each bay of the columns has an inspection port for easy access to the roof for maintenance; the column, beam, and slab structures are constructed in one piece using a steel mesh shell, resulting in a smooth, strong, and durable surface, eliminating the need for a plastering layer; because it eliminates on-site scaffolding, rebar tying, plastering, and roof waterproofing, this invention is cheaper than traditional awnings; this awning is quick to construct, inexpensive, and significantly superior to existing awnings in terms of durability, aesthetics, and ease of maintenance.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A reinforced concrete double-column rain shelter for railway platforms, characterized in that, Made of a steel frame (A), a component shell (B), and a concrete core (C), the railway platform reinforced concrete double-column canopy includes multiple units (D). The length of each half-span on both sides of the column is one unit (D). Each unit (D) includes an upper column slab (4), two column longitudinal beams (3), two canopy columns (1), and two lower cantilever slabs (2). The upper column slab (4) is fixed between the two column longitudinal beams (3), and the top surface of the upper column slab (4) is flush with the top surface of the column longitudinal beams (3). The lower cantilever slabs (2) are fixed on the column longitudinal beams (3), and the bottom surface of the lower cantilever slabs (2) is flush with the bottom surface of the column longitudinal beams (3). The column longitudinal beams (3) are fixed on the canopy columns (1).

2. The reinforced concrete double-column rain shelter for railway platforms as described in claim 1, characterized in that, The lower cantilever slab (2) is rooted at the longitudinal beam (3) between the columns and includes an outer cantilever section (201) towards the side of the platform and an inner cantilever section (202) towards the inside of the platform. The bottom of the lower cantilever slab (2) is the lowest point of the longitudinal beam (3) between the columns. The two outer ends are high and the middle is low. The outer end of the outer cantilever section (201) is higher than the outer end of the inner cantilever section (202). The bottom surface of the lower cantilever slab (2) is a streamlined curved surface.

3. The reinforced concrete double-column rain shelter for railway platforms as described in claim 2, characterized in that, An eaves board (203) is provided at the end of the cantilever section (201). The bottom of the eaves board (203) is lower than the bottom of the outermost end of the cantilever section (201), forming a structural drip line (204).

4. The reinforced concrete double-column rain shelter for railway platforms as described in claim 2, characterized in that, A groove (205) is formed between the inner cantilever section (202) and the longitudinal beam (3) between the columns.

5. The reinforced concrete double-column rain shelter for railway platforms as described in claim 1, characterized in that, The upper surface of the upper column plate (4) is a streamlined slope, with the middle part being higher than the two ends. The middle part of the plate is thicker, while the two ends are thinner.

6. The reinforced concrete double-column rain shelter for railway platforms as described in claim 1, characterized in that, The longitudinal beam (3) between columns has a half-access opening (301) at its beam end, which connects with the half-access opening (301) of the adjacent unit (D) to form a complete access opening (301).

7. The reinforced concrete double-column rain shelter for railway platforms as described in claim 1, characterized in that, The steel reinforcement cage (A) of the lower cantilever slab (2) and the upper column slab (4) is arranged in a double layer, including tensile main bars (A01) and compressive bars (A02). Stiffening members (A03) are set between the tensile main bars (A01) and the compressive bars (A02) to form a truss stiffening rib cage.

8. The reinforced concrete double-column rain shelter for railway platforms as described in claim 1, characterized in that, The outer shell (B) of the component is made of fine stone concrete. Inside the outer shell (B) are screens (B01) and mesh (B02). The screens (B01) and mesh (B02) are connected to the steel reinforcement skeleton (A) by tie bars (B03). Anchor bars (B04) are provided between the screens (B01) and the concrete core (C).

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