Flexible electricity-proof shed applied to overline project

Abstract

The utility model discloses a flexible electricity-proof shed applied to an overline project, which is applied to the extension of an existing overpass crossing an electrified operation line so as to reduce the influence on the operation of an existing railway. The anti-electricity shed comprises an internal thread sleeve, a bolt, a special-shaped steel plate component, square timber, a waterproof wood plate, waterproof canvas and fireproof asbestos which are sequentially arranged according to the construction sequence. The anti-electricity shed adopts an inter-beam protection form, when the clear height of the overpass is limited, the elevation of the bridge floor of the extended overpass part can be reduced to a certain extent, and the work amount is reduced. Compared with a traditional shed frame type protective electricity-proof shed, the construction technology is simple and convenient, the construction period is short, the construction safety risk of erecting and dismantling the protective electricity-proof shed is greatly reduced, the problem that the clearance between the bottom of the overpass bridge and the rail top is small is successfully solved, and the technology has wide application and popularization prospects.

Description

Technical Field

[0001] The utility model relates to the expansion of an existing overpass across an electrified operating line, in particular to a flexible anti-electric shed used in a cross-line project. Background Art

[0002] In recent years, my country's infrastructure construction has developed by leaps and bounds, especially in the fields of railways, highways, municipal roads, rail transit, etc. In order to improve the efficiency and traffic capacity of the road network, the intersection of new and expanded projects with existing railway operating lines has also increased. When they intersect with railway operating lines, most of them adopt a three-dimensional method, that is, they cross the railway operating line by underpassing or overpassing. When a bridge is used to cross the railway operating line, in order to ensure the safety of railway operation, the railway must be protected before construction. The traditional ground-fixed steel protection and anti-electric shed is generally within the projection range of the bridge crossing the operating line, and both sides are appropriately widened for full protection. When the overpass across the existing railway is expanded, it is obviously difficult to set up a traditional anti-electric shed due to the limited clear height of the overpass deck. Therefore, it is necessary to find a protective measure that can ensure the safety of railway operation and is not restricted by the clearance under the bridge. The flexible anti-electric shed adopts the form of beam protection, with simple construction technology and short construction period, which greatly reduces the safety risks of erecting and dismantling the protective anti-electric shed, and successfully solves the problem of small clearance between the bottom of the cross-line bridge and the top of the rail. Utility Model Content

[0003] The purpose of the utility model is to provide a flexible anti-electric shed for use in cross-line projects in response to the deficiencies in the above-mentioned prior art, to solve the problem that it is difficult to set up a traditional protective anti-electric shed for an overpass crossing an existing railway operating line due to limited clearance under the bridge, and to provide a protective measure that can ensure the safety of railway operations without being restricted by clearance under the bridge.

[0004] The specific technical solution of the utility model is as follows: a flexible anti-electric shed used in cross-line projects, including an internal threaded sleeve, a steel plate component, square timber, waterproof wooden boards, waterproof canvas and fireproof asbestos, steel plate components are respectively arranged on both sides of the middle beam and the inner side of the side beam, square timber, waterproof wooden boards, waterproof canvas and fireproof asbestos are laid between the two steel plate components of the middle beam, and waterproof wooden boards, waterproof canvas and fireproof asbestos are laid on the steel plate components of the side beams.

[0005] Preferably, tensioning cables are provided at the side beams.

[0006] Preferably, the steel plate member is connected to the internal threaded sleeve by high-strength bolts. The internal threaded sleeve is in the form of inter-beam protection and is embedded at a spacing of 50 cm along the beam direction to avoid the prestressed system in the beam body.

[0007] Preferably, insulating material is laid between the waterproof wooden board and the waterproof canvas.

[0008] The utility model has the advantage of providing a flexible anti-electric shed for use in cross-line projects, which is used for the expansion of existing overpasses across electrified operating lines to reduce the impact on existing railway operations. The flexible anti-electric shed adopts the form of beam protection, which well solves the problem of small clearance between the bottom of the beam and the top of the rail, and is easy to construct and fast. Therefore, the flexible anti-electric shed is a good protective measure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 For this utility model Figure 1 Schematic diagram of the production of medium sample A;

[0011] Figure 3 For this utility model Figure 1 Schematic diagram of the side view of the production sample of medium sample A;

[0012] Figure 4 For this utility model Figure 1 Schematic diagram of spot welding of medium and large sample A;

[0013] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged components of medium-large sample A;

[0014] Figure 6 For this utility model Figure 1 Schematic diagram of the structure of the medium-large sample A at the mid-span diaphragm;

[0015] Figure 7 This is a large drawing of the large sample A high-strength bolt of the utility model;

[0016] Figure 8 This is a large drawing of the internal thread sleeve of large sample A of the utility model;

[0017] Fig. 9 This is the large sample drawing of the large sample A steel gasket of the utility model;

[0018] Fig.10 For this utility model Figure 1 Enlarged structural diagram of the medium-large sample B;

[0019] Fig.11 For this utility model Figure 1 Schematic diagram of making large sample of medium large sample B;

[0020] Fig.12 For this utility model Figure 1 Schematic diagram of the side view of the production sample of medium sample B;

[0021] Fig.13This is a large drawing of the large sample B high-strength bolt of the utility model;

[0022] Fig.14 This is a large sample drawing of the internal threaded sleeve of large sample B of the utility model;

[0023] Fig.15 This is a large-scale drawing of the large-scale B steel gasket of the utility model.

[0024] In the figure: 1-internal threaded sleeve, 2-high-strength bolt, 3-steel plate component, 4-steel gasket, 5-square wood, 6-waterproof wooden board, 7-insulating material, 8-waterproof canvas, 9-fireproof asbestos, 10-tensioning steel cable. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by persons with ordinary skills in the relevant field.

[0027] like Figure 1-15 As shown, the flexible anti-electric shed of this embodiment adopts the form of inter-beam protection, and the internal threaded sleeve 1 is pre-buried at a spacing of 50cm along the beam direction. The internal threaded sleeve 1 avoids the prestressed system in the beam body. After the prefabricated beam body is demolded, high-strength bolts 2 and steel plate components 3 are installed. The protection measures for the middle beam are (sample A): square wood 5, waterproof wooden board 6, waterproof canvas 8 and fireproof asbestos 9 are laid on the steel plate component 3 between the two beams; the protection measures for the side beams are (sample B): waterproof wooden board 6, waterproof canvas 8 and fireproof asbestos 9 are directly laid on the steel plate component 3. In order to minimize the impact on the railway, the tensioned steel cable 10 is added at the side beam to resist wind.

[0028] The implementation steps of the utility model are as follows:

[0029] 1. When prefabricating a small box girder across a railway, when the reinforcement of the small box girder has been completed but the concrete has not yet been poured, the high-strength internal threaded sleeve thread sleeve is horizontally welded and fixed according to the designed position, and the internal threaded sleeve 1 is embedded on both sides of the small box girder (both sides of the middle beam and the inner side of the side beam). The interval between every two sleeves is 500 mm, and the sleeve mouth is sealed with a special plug to prevent the concrete from blocking the sleeve mouth.

[0030] 2. Use high-strength internal threaded sleeve 1 and high-strength bolt 2 to longitudinally fix the special-shaped angle steel at the bottom of the small box beam. After the longitudinal angle steel is hoisted into place with the small box beam, lay the anti-electric shed on the inside of the small box.

[0031] 3. After the small box girder is hoisted and erected in place, use 150*100 solid wood squares to be erected on the angle steels on both sides of the bottom of the beam at intervals of 1 meter and fixed, lay 25 mm thick wooden boards longitudinally on the solid wood squares and fix them as the load-bearing layer, lay insulating material 7, and then lay waterproof canvas 8 and fireproof asbestos 9 to achieve waterproof and fireproof effects.

[0032] 4. A working hole is reserved for each hole of the small box girder, through which the dismantled anti-electric and anti-fall shed materials are transported out. The reserved working hole is set at a position far away from the contact network to facilitate the removal of the template that blocks the working hole.

[0033] The prefabricated small box beam of the flexible anti-electric shed across the railway hole is hoisted in place. After all materials are ready, square wood 5, waterproof wooden board 6, insulating rubber sheet and waterproof canvas 8 are laid in the approved vertical skylight (vertical skylight or V-shaped skylight is mainly approved by the power supply department). It is necessary to strictly follow the procedures and control the time. It should be completed about 10 minutes in advance to ensure that there is no delay (the line should be blocked during this period of time). After the anti-electric shed is laid, the railway professional department should be asked to supervise and test it before the next procedure is allowed to proceed.

[0034] In recent years, my country's infrastructure construction has developed by leaps and bounds, especially in the fields of railways, highways, municipal roads, rail transit, etc., and the intersections between expansion and new construction projects and existing railway operating lines have also increased. When they intersect with railway operating lines, most of them adopt a three-dimensional method. When a bridge is used to cross the railway operating line, in order to ensure the safety of railway operation, the railway must be protected before construction. When the overpass across the existing railway is expanded, it is obviously difficult to set up a traditional anti-electric shed due to the limited clear height of the overpass bridge deck. The use of flexible anti-electric sheds has a simple construction process and a short construction period, which greatly reduces the safety risks of erecting and dismantling the protective anti-electric shed, and successfully solves the problem of small clearance between the bottom of the cross-line bridge and the top of the track.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible anti-electric shed used in a cross-line project, comprising an internal threaded sleeve, a steel plate component, square timber, a waterproof wooden board, a waterproof canvas and fireproof asbestos, characterized in that: Steel plate components are arranged on both sides of the central beam and inside the side beams respectively; square timber, waterproof wooden boards, waterproof canvas and fireproof asbestos are laid between the two steel plate components of the central beam; waterproof wooden boards, waterproof canvas and fireproof asbestos are laid on the steel plate components of the side beams.

2. The flexible anti-electric shed used in cross-line projects according to claim 1 is characterized in that: Tensioning steel cables are arranged at the side beams.

3. The flexible anti-electric shed used in cross-line projects according to claim 1 is characterized in that: The steel plate member is connected to the internal threaded sleeve by high-strength bolts. The internal threaded sleeve is in the form of inter-beam protection and is embedded at a spacing of 50 cm along the beam direction to avoid the prestressed system in the beam body.

4. The flexible anti-electric shed used in cross-line projects according to claim 1 is characterized in that: Insulating material is also laid between the waterproof wooden board and the waterproof canvas.

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