Supporting structure of basement entrance and exit in civil air defense project

Abstract

The utility model provides a supporting structure of a basement entrance and exit in civil air defense engineering, which belongs to the technical field of constructional engineering and comprises a galvanized square tube, reinforcing plates are arranged at four corners inside the galvanized square tube, a plurality of angle iron connecting pieces are arranged on the bottom side of the galvanized square tube, and the angle iron connecting pieces are connected with the reinforcing plates. Any angle iron connecting piece is matched with an expansion bolt connected with the ditch; a bearing steel plate is arranged above the galvanized square tube, anti-skid lines are arranged on the surface of the bearing steel plate, a folded edge is arranged on the edge of one side, facing the galvanized square tube, of the bearing steel plate, and the folded edge is fixedly connected to the galvanized square tube; a damping cavity is defined by the bearing steel plate, the folded edges and the galvanized square pipe, a plurality of EPDM rubber pads are arranged in the damping cavity, and the EPDM rubber pads are evenly arranged at intervals in the width direction of the galvanized square pipe. And slipping of vehicles or pedestrians can be avoided, and shock absorption and noise reduction can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, and in particular to a supporting structure for a basement entrance and exit in a civil air defense project. Background Art

[0002] The basement of civil air defense project is a kind of civil air defense fortification, including outer wall, buffer wall, entrance and exit, explosion-proof door, closed wall, protective partition wall and other parts. It is mainly used for temporary shelter of civil air defense, wartime air defense command center, communication center, shelter, etc.; some permanent defense fortifications also have three defense functions. In order to ensure the needs of civil air defense command, communication, shelter, etc., the basement with predetermined protection function also has the function of storing food and fresh water in emergency.

[0003] The entrance and exit is the passage in and out of the basement of the civil air defense project, which can be used for pedestrians and vehicles to enter. There is a ditch dug on the ground of the entrance and exit. In wartime, sandbags need to be piled in the ditch to build a shelter; in peacetime, support structures need to be installed in the ditch to fill it up to ensure normal entry and exit of pedestrians and vehicles.

[0004] The supporting structure of the prior art is mainly composed of a steel frame and a steel plate arranged on the surface of the steel frame. The following problems mainly occur when vehicles pass through:

[0005] First, due to the direct connection between the steel plate and the steel frame, noise will be generated when subjected to force.

[0006] Second, the surface of the steel plate is relatively smooth, and the car is prone to slipping. Utility Model Content

[0007] The purpose of the utility model is to provide a supporting structure for a basement entrance and exit in a civil air defense project, aiming to solve the technical problems in the above-mentioned background technology.

[0008] The utility model is achieved in this way:

[0009] The technical solution of the present application provides a supporting structure for the entrance and exit of a basement in a civil air defense project, comprising a galvanized square tube, the galvanized square tube is used to be installed in the ditch of the entrance and exit of the basement, the four corners of the galvanized square tube are provided with reinforcing plates, the bottom side of the galvanized square tube is provided with a plurality of angle iron connectors, and any of the angle iron connectors is matched with an expansion bolt connected to the ditch;

[0010] A load-bearing steel plate is arranged above the galvanized square tube, and the surface of the load-bearing steel plate is provided with anti-slip grooves, and the edge of the load-bearing steel plate facing the galvanized square tube is provided with a folded edge, and the folded edge is fixedly connected to the galvanized square tube;

[0011] The bearing steel plate, the folded edge and the galvanized square tube form a shock absorbing cavity, and the shock absorbing cavity is provided with a plurality of EPDM rubber pads, and the plurality of EPDM rubber pads are evenly spaced along the width direction of the galvanized square tube.

[0012] In some embodiments of the utility model, the edge of the top side of the galvanized square tube is provided with a placement groove matching the folded edge, and when the folded edge and the placement groove are butt-jointed, the side edge of the folded edge is flush with the side edge of the galvanized square tube.

[0013] In some embodiments of the present invention, the folded edge and the placement groove are connected by welding.

[0014] In some embodiments of the utility model, a dovetail tenon groove is provided on one side of the annular surface of the galvanized square tube, and a dovetail tenon is provided on the other side, the dovetail tenon groove and the dovetail tenon are located on the same positive cross-section of the galvanized square tube, the dovetail tenon groove and the dovetail tenon are both arranged along the height direction of the galvanized square tube, the top side of the dovetail tenon groove is connected with the placement groove, and the top side of the dovetail tenon is flush with the bottom side of the placement groove.

[0015] In some embodiments of the present invention, a connecting plate is provided on the bottom side of the EPDM rubber pad, a connecting protrusion is provided on the bottom side of the connecting plate, and a positioning groove matching the connecting protrusion is provided on the galvanized square tube.

[0016] In some embodiments of the present utility model, the connection plate and the galvanized square tube, and the connection protrusion and the positioning groove are bonded by glue.

[0017] Compared with the prior art, the technical solution of the present invention has at least the following advantages or beneficial effects:

[0018] The utility model is suitable for ditches at the entrances and exits of basements in civil air defense projects. In actual application, multiple supporting structures are arranged side by side in the above ditches, so that the plane formed by multiple bearing steel plates can fill the ditches for pedestrians and vehicles to pass. When vehicles or pedestrians pass through the bearing steel plates, on the one hand, the anti-skid pattern on the surface of the bearing steel plates has an anti-skid effect, which can prevent vehicles or pedestrians from slipping; on the other hand, the bearing steel plates act on the EPDM rubber pads, which have a shock-absorbing effect, can reduce the generation of noise, and are more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a front view of a supporting structure of a basement entrance and exit in a civil air defense project provided by an embodiment of the utility model;

[0021] Figure 2 It is a cross-sectional view of a supporting structure of a basement entrance and exit in a civil air defense project provided by an embodiment of the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged view of middle A;

[0023] Figure 4 It is a top view of a supporting structure of a basement entrance and exit in a civil air defense project provided by an embodiment of the utility model.

[0024] Icon: 100- galvanized square tube, 200- load-bearing steel plate, 300- EPDM rubber pad, 400- reinforcement plate, 500- placement groove, 600- dovetail tenon, 700- dovetail tenon groove, 800- angle iron connector, 900- connection protrusion. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention. Example

[0026] Reference Figure 1-Figure 4The present embodiment provides a supporting structure for the entrance and exit of a basement in a civil air defense project, including a galvanized square tube 100. The galvanized square tube 100 is used to be installed in the ditch at the entrance and exit of the basement. Galvanizing makes it more protective and has strong corrosion resistance. Reinforcement plates 400 are provided at the four corners inside the galvanized square tube 100. The design of the reinforcement plate 400 can improve the structural strength of the galvanized square tube 100, so that the bearing capacity of the present application is stronger. A plurality of angle iron connectors 800 are provided on the bottom side of the galvanized square tube 100. Any of the angle iron connectors 800 is matched with an expansion bolt connected to the ditch. The plurality of angle iron connectors 800 are evenly arranged around the galvanized square tube 100 to achieve multi-directional fixation of the galvanized square tube 100 and improve the stability of the installation of the present application. A bearing steel plate 200 is arranged above the galvanized square tube 100. The surface of the bearing steel plate 200 is provided with anti-slip grooves. The edge of the bearing steel plate 200 facing the galvanized square tube 100 is provided with a folded edge, and the folded edge is fixedly connected to the galvanized square tube 100. The folded edge is a rectangular structure, and the four sides of the folded edge match the four sides of the galvanized square tube 100 respectively. The bearing steel plate 200, the folded edge and the galvanized square tube 100 are surrounded by a shock-absorbing cavity, and the shock-absorbing cavity is provided with a plurality of EPDM rubber pads 300. The plurality of EPDM rubber pads 300 are evenly spaced along the width direction of the galvanized square tube 100. The utility model is suitable for ditches at the entrances and exits of basements in civil air defense projects. In actual application, a plurality of supporting structures are arranged side by side in the ditch, so that the plane formed by the plurality of bearing steel plates 200 can fill the ditch for pedestrians and vehicles to pass. When a vehicle or pedestrian passes by the bearing steel plate 200, on the one hand, the anti-skid pattern on the surface of the bearing steel plate 200 has an anti-skid effect, which can prevent the vehicle or pedestrian from slipping; on the other hand, the bearing steel plate 200 acts on the EPDM rubber pad 300, and the EPDM rubber pad 300 has a shock-absorbing effect, which can reduce the generation of noise and is more practical.

[0027] The folded edge and the bearing steel plate 200 form an integrally formed structure.

[0028] In some embodiments of the present invention, the edge of the top side of the galvanized square tube 100 is provided with a placement groove 500 matching the above-mentioned folded edge. When the above-mentioned folded edge and the above-mentioned placement groove 500 are connected, the side edge of the above-mentioned folded edge is flush with the side edge of the above-mentioned galvanized square tube 100.

[0029] In the above embodiment, the side of the folded edge is flush with the side of the galvanized square tube 100, and the side of the present application is relatively flat, which is safer during transportation and installation. When multiple support structures are arranged in parallel, the adjacent support structures fit more closely, and the overall installation is more compact, which is conducive to improving the stability of the parallel installation of multiple support structures.

[0030] In some embodiments of the present invention, the folded edge and the placement groove 500 are connected by welding.

[0031] In the above embodiments, welding has the advantages of good connection performance, high rigidity of the welded structure and good integrity.

[0032] In some embodiments of the utility model, a dovetail tenon groove 700 is provided on one side of the annular surface of the galvanized square tube 100, and a dovetail tenon 600 is provided on the other side. The dovetail tenon groove 700 and the dovetail tenon 600 are located on the same positive cross-section of the galvanized square tube 100, and the dovetail tenon groove 700 and the dovetail tenon 600 are both provided along the height direction of the galvanized square tube 100. The top side of the dovetail tenon groove 700 is connected with the placement groove 500, and the top side of the dovetail tenon 600 is flush with the bottom side of the placement groove 500.

[0033] In the above embodiment, when multiple supporting structures are arranged in parallel, the dovetail grooves 700 and dovetail tenons 600 of any adjacent galvanized square tubes 100 are matched to achieve connection between adjacent supporting structures, so that multiple supporting structures can be connected as one, thereby improving the stability of the overall structure.

[0034] In some embodiments of the present invention, a connecting plate is provided on the bottom side of the EPDM rubber pad 300 , a connecting protrusion 900 is provided on the bottom side of the connecting plate, and a positioning groove matching the connecting protrusion 900 is provided on the galvanized square tube 100 .

[0035] In the above embodiment, the connecting protrusion 900 is annular and arranged around the circumferential direction of the EPDM rubber pad 300. The cooperation between the connecting protrusion 900 and the positioning groove can improve the stability of the EPDM rubber pad 300 and prevent the EPDM rubber pad 300 from moving.

[0036] In some embodiments of the present invention, the connection plate and the galvanized square tube 100, and the connection protrusion 900 and the positioning groove are bonded by glue.

[0037] In the above embodiment, the glue bonding method can achieve fast and stable installation of the EPDM rubber pad 300.

[0038] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A supporting structure for a basement entrance and exit in a civil air defense project, characterized in that: It comprises a galvanized square tube, which is used to be installed in the ditch at the entrance and exit of the basement. Four corners of the galvanized square tube are provided with reinforcing plates. The bottom side of the galvanized square tube is provided with a plurality of angle iron connectors, and any of the angle iron connectors is matched with an expansion bolt connected to the ditch; A bearing steel plate is arranged above the galvanized square tube, the surface of the bearing steel plate is provided with anti-slip grooves, the edge of the bearing steel plate facing the galvanized square tube is provided with a folded edge, and the folded edge is fixedly connected to the galvanized square tube; The bearing steel plate, the folded edge and the galvanized square tube form a shock-absorbing cavity, and the shock-absorbing cavity is provided with a plurality of EPDM rubber pads, and the plurality of EPDM rubber pads are evenly spaced along the width direction of the galvanized square tube.

2. The supporting structure of the basement entrance and exit in the civil air defense project according to claim 1 is characterized in that: The edge of the top side of the galvanized square tube is provided with a placement groove matching the folded edge. When the folded edge and the placement groove are butted against each other, the side edge of the folded edge is flush with the side edge of the galvanized square tube.

3. The supporting structure of the basement entrance and exit in the civil air defense project according to claim 2 is characterized in that: The folded edge and the placement groove are connected by welding.

4. The supporting structure of the basement entrance and exit in the civil air defense project according to claim 2 is characterized in that: A dovetail tenon groove is provided on one side of the annular surface of the galvanized square tube, and a dovetail tenon head is provided on the other side. The dovetail tenon groove and the dovetail tenon head are located on the same positive cross-section of the galvanized square tube. The dovetail tenon groove and the dovetail tenon head are both arranged along the height direction of the galvanized square tube. The top side of the dovetail tenon groove is connected to the placement groove, and the top side of the dovetail tenon head is flush with the bottom side of the placement groove.

5. The supporting structure of the basement entrance and exit in the civil air defense project according to claim 1 is characterized in that: A connecting plate is arranged on the bottom side of the EPDM rubber pad, a connecting protrusion is arranged on the bottom side of the connecting plate, and a positioning groove matching the connecting protrusion is arranged on the galvanized square tube.

6. The supporting structure of the basement entrance and exit in the civil air defense project according to claim 5, characterized in that: The connecting plate and the galvanized square tube, and the connecting protrusion and the positioning groove are bonded by glue.

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