Subway evacuation platform

Abstract

A subway evacuation platform comprises a plurality of platform supports and platform plates, the platform supports are evenly and fixedly installed on the side wall of a subway tunnel in the length direction of the subway tunnel, the platform plates are installed between the adjacent platform supports, and each platform plate comprises a bamboo steel plate layer and a ceramic plate layer. Wherein the ceramic plate layer is fixedly arranged on the upper end face of the bamboo steel plate layer, and the bamboo steel plate layer is fixedly connected with the upper end face of the corresponding platform support. The platform plate is formed by bonding the bamboo steel plate layer and the ceramic plate layer through polyester sealant or AB glue, compared with an existing steel structure, a prefabricated reinforced concrete plate and a UHPC plate, the platform plate has the advantages that the weight is light, the bearing capacity of an evacuation platform can be improved, the weight of a single plate is smaller than 80 kg, the dependence degree on machines is low during installation, and the field installation difficulty is low; in the actual installation process, due to the fact that the weight is light, constructors can conveniently cut and adjust the size according to the actual site requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to subway auxiliary application equipment technical field especially relates to a subway evacuation platform. BACKGROUND

[0002] With the rapid development of urban subway traffic, the safety and durability of subway evacuation platforms are paid more and more attention. In the subway tunnel, in order to evacuate passengers in special circumstances, evacuation platforms need to be set on the side wall of the tunnel for passengers to walk to a safe place. In the prior art, the traditional evacuation platform material mostly uses steel structure and prefabricated reinforced concrete slab or uses UHPC slab, such as patent CN203876751U discloses a subway evacuation platform, which uses steel structure and prefabricated reinforced concrete slab, and patent CN113847084A discloses a new type of UHPC subway evacuation platform, which uses UHPC slab. The steel structure and prefabricated reinforced concrete slab are made by putting steel bars in concrete, and the weight of a single slab can reach 185kg. The UHPC slab is formed by using cement as a base material, steel fibers as reinforcing materials, special additives as modified materials, adding aggregates, admixtures and water. The weight of a single slab can reach 125kg. The above two kinds of slabs generally need to be installed with the help of machinery when assembling and installing, which is difficult to install on site and difficult to adjust the size on site. There are disadvantages such as large quality, high construction cost, long construction period and the like. On the other hand, due to the large weight of the steel structure and prefabricated reinforced concrete slab and the UHPC slab, the carrying capacity of the evacuation platform is reduced. SUMMARY

[0003] Therefore, the utility model aims at the deficiency of prior art, and provides a subway evacuation platform.

[0004] The utility model discloses a purpose is realized through the following technical schemes:

[0005] A subway evacuation platform, comprising a plurality of platform supports and platform plates, a plurality of platform supports are fixedly installed on the side wall of the subway tunnel along the length direction of the subway tunnel, the platform plates are installed between adjacent platform supports, the platform plate comprises a bamboo steel plate layer and a ceramic plate layer, wherein the ceramic plate layer is fixedly arranged on the upper end face of the bamboo steel plate layer, and the bamboo steel plate layer is fixedly connected with the upper end face of the corresponding platform support.

[0006] Further, the thickness of the platform plate is 28mm-60mm, the thickness of the ceramic plate layer is 18mm-30mm, and the thickness of the bamboo steel plate layer is 10mm-30mm.

[0007] Further, the end face of the platform plate is provided with a stepped hole corresponding to the platform support, wherein the small hole on the stepped hole is arranged on the bamboo steel plate layer, and the large hole is arranged on the ceramic plate layer.

[0008] Further, the platform support comprises a horizontal rod and a vertical rod, the horizontal rod and the vertical rod are connected and integrally shaped as a Chinese character, two sides of the vertical rod are provided with fixed steel plates and are fixedly connected with the side wall of the subway tunnel through the fixed steel plates, and the upper end surface of the horizontal rod is fixedly connected with the bamboo steel plate layer.

[0009] Further, the horizontal rod and the vertical rod are provided with a reinforcing rib between the horizontal rod and the vertical rod.

[0010] The platform support has the advantages that:

[0011] 1. The platform plate is formed by bonding the bamboo steel plate layer and the ceramic plate layer through polyester sealant or AB adhesive, has the advantages of light weight and improved bearing capacity of the evacuation platform compared with the existing steel structure and prefabricated reinforced concrete plate and UHPC plate, the weight of the single plate is less than 30 kg, the dependence on machinery during installation is low, and the on-site installation difficulty is low; and in the actual installation process, the weight is light, and the construction personnel can cut and adjust the size according to the actual demand on site.

[0012] 2. The bolt head of the fastening bolt is completely located in the large hole of the stepped hole, potential safety hazards caused by the exposed bolt head can be reduced, the stepped hole can also provide better positioning, the bolt head can be closely attached to the hole wall, and loosening caused by vibration or stress during use of the bolt can be reduced.

[0013] 3. The T-shaped fixed steel plate can enhance the stability of the vertical rod and the ability to resist front and rear shaking.

[0014] 4. The reinforcing rib can disperse the stress concentrated at the intersection of the horizontal rod and the vertical rod to the intersection of the reinforcing rib and the horizontal rod and the intersection of the reinforcing rib and the vertical rod, improve the bearing capacity, and avoid damage caused by stress concentration. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the embodiment 1 of the utility model;

[0016] Figure 2 It is a left view of Figure 1

[0017] Figure 3 It is a left view of Figure 1

[0018] Figure 4 It is a partial sectional view of the embodiment 2 of the utility model.

[0019] In the drawing: 1, platform support; 101, horizontal rod; 102, vertical rod; 103, fixed steel plate; 104, reinforcing rib; 2, platform plate; 201, bamboo steel plate layer; 202, ceramic plate layer; 203, concave-convex stripe; 3, stepped hole. DETAILED DESCRIPTION​​

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described below in combination with the drawings. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] Embodiment 1

[0022] As Figures 1-3 shown, a subway evacuation platform, comprising a plurality of platform supports 1 and platform boards 2, a plurality of said platform supports 1 are uniformly fixedly installed along the length direction of the subway tunnel on the side wall of the subway tunnel, the platform boards 2 are installed between adjacent platform supports 1, the platform board 2 comprises a bamboo steel plate layer 201 and a ceramic plate layer 202, wherein the ceramic plate layer 202 is fixedly arranged on the upper end face of the bamboo steel plate layer 201, and the bamboo steel plate layer 201 is fixedly connected with the upper end face of the corresponding platform support 1.

[0023] The bamboo steel plate layer 201 is made of bamboo steel material, which is a kind of high-performance bamboo fiber composite material. The easily oxidized and decomposed components such as sugar and water in the bamboo are removed, only the bamboo fiber and resin are left, and the bamboo is synthesized at high temperature and high pressure. Its static bending strength ≥ 100 MPa, bending elastic modulus ≥ 11000 Mpa, tensile elastic modulus ≥ 9000 Mpa, tensile strength ≥ 110 MPa, compressive elastic modulus ≥ 9000 Mpa, compressive strength ≥ 85 Mpa, horizontal shear strength vertical load ≥ 6 Mpa, horizontal load ≥ 9 Mpa, 2h water boiling thickness expansion rate ≤ 12%, 2h water boiling width expansion rate ≤ 3%, 2h water boiling static bending strength ≥ 45 Mpa, corrosion resistance not less than II level, that is, the bamboo steel plate layer has high tensile property and moisture resistance, and can be completely applied to the humid environment of the subway tunnel.

[0024] The ceramic plate layer 202 is made of ceramic material, and the average value of the fracture modulus of the ceramic material is ≥ 35 MPa, which has high compressive strength, and also has excellent corrosion resistance and wear resistance.

[0025] The platform plate 2 is formed by bonding the bamboo steel plate layer 201 and the ceramic plate layer 202 by polyester sealant or AB adhesive. Compared with the existing steel structure and prefabricated reinforced concrete plate and UHPC plate, the platform plate has the advantages of light weight and improved evacuation platform bearing capacity. The weight of a single plate is less than 80 kg, the dependence on machinery during installation is low, and the on-site installation difficulty is low. In the actual installation process, the platform plate can be cut and the size can be adjusted according to the actual needs of the site due to its light weight.

[0026] Specifically, in the actual installation and use process, the thickness of the platform plate 2 is set to 28-60 mm, wherein the thickness of the ceramic plate layer 202 is 18-30 mm, and the thickness of the bamboo steel plate layer 201 is 10-30 mm. By setting the thickness in this way, the overall weight of the platform plate 2 can be reduced under the premise of meeting the necessary strength, and the platform plate 2 is easier to operate during manufacturing and installation, and is not too heavy, facilitating transportation and installation.

[0027] Specifically, in the embodiment, the end face of the platform plate 2 is provided with a stepped hole 3 corresponding to the platform support 1, wherein the small hole of the stepped hole 3 is formed in the bamboo steel plate layer 201, and the large hole is formed in the ceramic plate layer 202. The stepped hole 3 is used for installing bolts, and the platform plate 2 is fixedly installed on the platform support 1 by bolt connection. Considering that the platform plate 2 needs strong bearing stability in actual use, the small hole of the stepped hole 3 is preferably 12 mm for installing a fastening bolt with a diameter of 12 mm and a strength grade of 12.9. The bolt is usually suitable for high-load connection and key structural parts. On the other hand, after the fastening bolt is installed on the platform plate 2, the bolt head of the fastening bolt is completely located in the large hole of the stepped hole 3, which can ensure the flatness of the end face of the platform plate 2, i.e. the end face of the ceramic plate layer 202, and can reduce potential safety hazards caused by exposed bolt heads. The stepped hole 3 can also provide better positioning, so that the bolt head can tightly fit the hole wall and reduce the loosening of the bolt caused by vibration or stress during use.

[0028] There are two ways to process the stepped hole 3. One is to first form through holes with different diameters in the corresponding positions of the bamboo steel plate layer 201 and the ceramic plate layer 202, and then bond the bamboo steel plate layer 201 and the ceramic plate layer 202. The other is to first bond the bamboo steel plate layer 201 and the ceramic plate layer 202, then form small holes through the bamboo steel plate layer 201 and the ceramic plate layer 202, and then form large holes in the ceramic plate layer 202 corresponding to the small holes. From the difficulty of processing, the first processing method is simpler than the second processing method. However, considering the accuracy of processing and the actual installation process, such as the coaxiality between the two holes of the stepped hole 3 and the need to cut and adjust the size of the platform plate 2, the second hole opening method is preferred.

[0029] Specifically, in this embodiment, the platform support 1 includes a horizontal bar 101 and a vertical bar 102. The horizontal bar 101 and the vertical bar 102 are connected and form a "7" shape. The end face of the vertical bar 102 facing away from the tunnel sidewall is tightly attached to the tunnel sidewall, and a fixing steel plate 103 is provided on the left and right sides of this end face. The fixing steel plate 103 is used for the fixed connection between the vertical bar 102 and the subway tunnel sidewall. The cross-section of the fixing steel plate 103 is as follows: Figure 1 The T-shape is shown and is fixedly connected to the vertical rod 102 by double-sided welding. The T-shape enhances the stability of the vertical rod 102 and its resistance to swaying in the front and back directions. Since the fixing steel plate 103 is relatively thick, double-sided welding can ensure that the weld penetrates to the full thickness of the plate, thereby forming a high-quality weld. Furthermore, since the weld exists on both sides of the joint, the stress can be distributed more evenly, improving the overall load-bearing capacity and tensile strength. At the same time, the heat is distributed on both sides of the joint, and the thermal stress is more uniform, which can significantly reduce the deformation of the welded parts and maintain the geometric accuracy of the structure.

[0030] like Figure 3 As shown, the end face of the fixing steel plate 103 is provided with symmetrical bolt holes, which are used to install chemical anchors. The fixing steel plate 103 is fixedly connected to the side wall of the subway tunnel by the chemical anchors.

[0031] The upper end face of the crossbar 101 is fixedly connected to the bamboo steel plate layer 201. The crossbar 101 has a through hole at the small hole corresponding to the stepped hole 3. The through hole is coaxial with the small hole and has the same diameter, which facilitates the installation of fastening bolts.

[0032] Specifically, in this embodiment, such as Figure 1 As shown, to enhance the vertical support capacity of the platform support 1, a reinforcing rib 104 is obliquely arranged between the horizontal bar 101 and the vertical bar 102. During use, the reinforcing rib 104 disperses the stress concentrated at the intersection of the horizontal bar 101 and the vertical bar 102 to the intersection of the reinforcing rib 104 with the horizontal bar 101 and the vertical bar 102, thereby improving load-bearing capacity and preventing damage caused by stress concentration. The reinforcing rib 104 is made of high-strength steel, and its two ends can be fixedly connected to the horizontal bar 101 and the vertical bar 102 by welding; alternatively, the reinforcing rib 104 can be integrally cast with the horizontal bar 101 and the vertical bar 102.

[0033] Example 2

[0034] like Figure 4As shown, the bonding end faces of the bamboo steel plate layer 201 and the ceramic plate layer 202 are provided with mutually matched concave-convex stripes 203, the concave-convex stripes 203 on the bamboo steel plate layer 201 and the concave-convex stripes 203 on the ceramic plate layer 202 are mutually staggered and clamped, in the bonding process of the bamboo steel plate layer 201 and the ceramic plate layer 202, the concave-convex stripes 203 can not only realize the quick positioning and installation of the bamboo steel plate layer 201 and the ceramic plate layer 202, but also can form more contact points and contact areas with the bonding material, enhance the bonding force between the bamboo steel plate layer 201 and the ceramic plate layer 202, and when the bonding material is solidified, the concave-convex stripes 203 can also play a mechanical locking role, increase the stability of the bamboo steel plate layer 201 and the ceramic plate layer 202. On the other hand, when the platform plate 2 is subjected to external force or temperature change, the concave-convex stripes 203 can effectively disperse and absorb stress through the concave-convex shape, avoid the damage of the platform plate 2 caused by stress concentration.

[0035] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A subway evacuation platform, characterized by: The platform support (1) and the platform plate (2) are included, the platform support (1) is installed on the side wall of the subway tunnel along the length direction of the subway tunnel, the platform plate (2) is installed between the adjacent platform supports (1), the platform plate (2) includes the bamboo steel plate layer (201) and the ceramic plate layer (202), the ceramic plate layer (202) is fixed on the upper end surface of the bamboo steel plate layer (201), and the bamboo steel plate layer (201) is fixedly connected with the upper end surface of the corresponding platform support (1).

2. The subway evacuation platform according to claim 1, characterized in that: The thickness of the platform plate (2) is 28-60 mm, the thickness of the ceramic plate layer (202) is 18-30 mm, and the thickness of the bamboo steel plate layer (201) is 10-30 mm.

3. The subway evacuation platform according to claim 2, characterized in that: The end surface of the platform plate (2) is provided with a stepped hole (3) corresponding to the platform support (1), the small hole of the stepped hole (3) is arranged on the bamboo steel plate layer (201), and the large hole is arranged on the ceramic plate layer (202).

4. The subway evacuation platform according to claim 3, characterized in that: The platform support (1) includes the horizontal rod (101) and the vertical rod (102), the horizontal rod (101) and the vertical rod (102) are connected and integrally formed as a "7" shape, the two sides of the vertical rod (102) are provided with the fixed steel plate (103) and are fixedly connected with the side wall of the subway tunnel through the fixed steel plate (103), and the upper end surface of the horizontal rod (101) is fixedly connected with the bamboo steel plate layer (201).

5. A subway evacuation platform according to claim 4, wherein: The reinforcing rib (104) is arranged between the horizontal rod (101) and the vertical rod (102).

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