Subway entrance and exit tunnel portal breaking protection device

Abstract

The utility model relates to the technical field of rail transit, in particular to a subway entrance and exit tunnel portal breaking protection device which comprises a connecting device, a bracket device and a protection device body. The connecting device comprises a connecting steel bar and a steel sleeve; the bracket device is of an L-shaped structure, and one side of the bracket device is fixedly connected with the side wall of the fender post; the connecting steel bar is fixedly connected with a steel bar reserved on the fender post, the connecting steel bar is connected with the other side of the bracket device in an inserted mode and fixedly locked through the steel sleeve, and the tail end of the side is tightly attached to the side wall of the body. The protection device is arranged in an area defined by the fender posts, the main body side walls and the bracket device, the protection device comprises a protection layer and a filling layer, the protection layer is connected with the inner wall of the bracket device, and the area among the fender posts, the main body side walls and the protection layer is filled with the filling layer. The risk that soil between piles falls off in the subway station entrance and exit breaking construction process is avoided, secondary dismounting and changing of the protection structure due to procedure conversion are reduced, protection is achieved in the whole construction process, and potential safety hazards are eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field, concretely relates to a subway entrance and exit portal breaking protection device. BACKGROUND

[0002] When the subway auxiliary structure portal is broken, the traditional method is to break all the retaining piles, use double-row buckle type scaffoldings made of phi 48 steel pipes to block the soil falling between the piles to prevent people from being hurt, and then remove the scaffoldings after the bottom plate side wall construction is completed and install the roof support frame. During the retaining pile breaking stage from top to bottom and the roof construction stage, the protection frame is in the state of being removed, the pile top has no protection, and great safety hazards exist, and there is no protection device specially used for breaking the subway entrance and exit portal on the market. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model solves the technical problems in the prior art, and provides a subway entrance and exit portal breaking protection device.

[0004] A subway entrance and exit portal breaking protection device comprises a connecting device, a bracket device and a protection device.

[0005] The connecting device comprises a connecting steel rod and a steel sleeve, the bracket device is in an L-shaped structure, and one side of the bracket device is fixedly connected to the side wall of the retaining pile.

[0006] The connecting steel rod is fixedly connected to the reserved steel bar of the retaining pile, the other side of the bracket device is inserted into the connecting steel rod, and the other side is fixedly locked through the steel sleeve, and the end of the other side is close to the main body side wall.

[0007] The protection device is arranged in the area surrounded by the retaining pile, the main body side wall and the bracket device, the protection device comprises a protection layer and a filling layer, the protection layer is connected to the inner wall of the bracket device, and the filling layer fills the area between the retaining pile, the main body side wall and the protection layer.

[0008] Further, the connecting steel rod is made of threaded steel with a diameter of 25 mm, and the total length of the connecting steel rod is 400 mm.

[0009] Further, the connecting steel rod is provided with a first thread with a length of 60 mm from bottom to top, the steel sleeve is provided with a second thread matched with the first thread, and the connecting steel rod is threadedly connected to the steel sleeve.

[0010] Further, the bracket device is made of two angle steels with specifications of 50 mm*50 mm*5 mm and is welded in an L shape.

[0011] Further, long strip-shaped punching holes are arranged on two edges of the bracket device, one edge of the bracket device is fixedly connected with the side wall of the enclosure pile through expansion bolts, and stainless steel gaskets are arranged between the steel sleeve and the long strip-shaped punching hole and between the expansion bolts and the long strip-shaped punching hole.

[0012] Further, the steel sleeve is specifically a steel bar connector with a specification of 25mm*60mm.

[0013] Further, the protective layer is specifically a 3cm-thick wood board layer.

[0014] Further, the filling layer is specifically a non-combustible rock wool layer.

[0015] Further, the connecting steel bar is double-face welded with the reserved steel bar 5D on the enclosure pile.

[0016] Further, the diameter of the expansion bolt is 20mm.

[0017] The technical scheme of the utility model has the following advantages:

[0018] 1. The device solves the risk of soil falling between piles during the breaking construction process of the subway station entrance, and the protective device is also suitable for air ducts and other auxiliary structures, reduces the secondary disassembly and modification of the protective structure due to process conversion, protects the whole construction process, eliminates safety hazards, and achieves good economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the specific embodiment of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 It is a schematic view of the installation of the subway entrance portal breaking protective device;

[0021] Figure 2 It is a plan view of the installation of the subway entrance portal breaking protective device;

[0022] Figure 3 It is a sectional view of the installation of the subway entrance portal breaking protective device;

[0023] Figure 4 It is a structural schematic view of the B node;

[0024] Figure 5 It is a structural schematic view of the C node.

[0025] EXPLANATION OF REFERENCE NUMERALS:

[0026] 1.1-connection steel rod; 1.2-stainless steel gasket; 1.3-steel sleeve;

[0027] 2-bracket device; 3-protection device; 3.1-protection layer;

[0028] 3.2-filling layer. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be pointed out that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices or elements indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0033] Please refer to Figures 1 to 5 A subway entrance and exit portal protection device, comprising: a connecting device, a bracket device 2 and a protection device;

[0034] The connecting device comprises a connection steel rod 1.1 and a steel sleeve 1.3; the bracket device 2 is of L-shaped structure, and one side of the bracket device 2 is fixedly connected with the side wall of the retaining pile;

[0035] The connecting steel bar 1.1 is connected with the reserved steel bar of the retaining pile, and the other edge of the bracket device 2 is inserted into the connecting steel bar 1.1 and is fixed and locked by the steel sleeve 1.3, and the end of the edge is close to the main side wall;

[0036] The protection device is arranged in the area surrounded by the retaining pile, the main side wall and the bracket device 2, and the protection device comprises a protection layer 3.1 connected with the inner wall of the bracket device 2 and a filling layer 3.2 filling the area between the retaining pile, the main side wall and the protection layer 3.1.

[0037] The connecting steel bar 1.1 is made of a threaded steel with a diameter of 25 mm, and the total length is 400 mm.

[0038] The connecting steel bar 1.1 is provided with a first thread with a length of 60 mm from bottom to top, the steel sleeve 1.3 is provided with a second thread matched with the first thread, and the connecting steel bar 1.1 is threadedly connected with the steel sleeve 1.3.

[0039] The bracket device 2 is made of two angle steels with a specification of 50 mm*50 mm*5 mm and is welded in an L shape.

[0040] The two edges of the bracket device 2 are provided with long strip-shaped punching holes, one edge of the bracket device 2 is fixedly connected with the side wall of the retaining pile through an expansion bolt, the diameter of the expansion bolt is 20 mm, and stainless steel gaskets 1.2 are arranged between the steel sleeve 1.3 and the long strip-shaped punching hole and between the expansion bolt and the long strip-shaped punching hole, so that the height adjustment of the steel sleeve and the connecting steel bar 1.1 is realized, and the long strip-shaped punching hole of the bracket device 2 is too large to cause the failure of the steel sleeve 1.3.

[0041] The steel sleeve 1.3 is specifically a steel bar connector with a specification of 25 mm*60 mm.

[0042] The protection layer 3.1 is specifically a wood board layer with a thickness of 3 cm, and the filling layer 3.2 is specifically a non-combustible rock wool layer.

[0043] The connecting steel bar 1.1 is double-sided welded with the reserved steel bar 5D of the retaining pile.

[0044] After the first retaining pile is removed, the installation of the device is performed under the condition of space operation, and specifically includes the following steps.

[0045] Step one: making a connecting device; a threaded steel with a specification of 25 mm is selected to make a connecting steel bar 1.1, the total length is designed to be 400 mm, the bottom 60 mm is threaded by a steel bar straight thread sleeve machine, then the connecting steel bar 1.1 is welded with the reserved steel bar of the retaining pile, and the welding length is greater than or equal to 5D.

[0046] Select stainless steel gasket 1.2, specifically select the finished gasket with inner diameter > 25mm and outer diameter > 50mm;

[0047] Select steel sleeve 1.3, specifically select the steel bar connector with a size of 25mmx60mm, the wire angle and width of the steel bar connector are consistent with the size of the connected steel bar, which can ensure normal screwing in;

[0048] Step two: make the bracket device 2, specifically adopt 50mmx50mmx5mm angle steel in "L" shape welding, and after welding, it is fixedly connected with the connecting device, because the pile diameters of the enclosure piles are different, the positions of the main reinforcement are also different, so the long strip punching needs to be set according to the spacing of the two outermost steel bars in the actual scene, and the bracket device 2 is fixed on the side wall of the enclosure pile through the 20mm expansion bolt;

[0049] Step three: lay a 30mm wooden board on the inner wall of the bracket device 2, and then fill the non-combustible rock wool in the area and gap between the enclosure pile, the main body side wall and the wooden board to prevent the unstable falling of the soil between the piles from impacting the wooden board;

[0050] Step four: after the installation of the protection device is completed, continue to break the enclosure pile downward;

[0051] Step five: after the construction of the auxiliary top plate structure of civil engineering is completed, when the earthwork is backfilled to the bottom of the protection facility, the protection device is removed.

[0052] The device solves the risk of soil falling between piles during the breaking construction process of the subway station entrance, and the protection device is also suitable for air ducts and other auxiliary structures, reduces the secondary disassembly and modification of the protection structure due to process conversion, protects the whole construction process, eliminates safety hazards, and achieves good economic benefits.

[0053] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the implementation. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation is not required and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A subway portal breaching apparatus, comprising: The utility model relates to a connecting device, a bracket device (2) and a protection device. The connecting device comprises a connecting steel bar (1.1) and a steel sleeve (1.3); the bracket device (2) is of L-shaped structure, and one side of the bracket device (2) is fixedly connected with the side wall of the enclosure pile; The connecting steel bar (1.1) is fixedly connected with the reserved steel bar on the enclosure pile, and the other side of the bracket device (2) is inserted into the connecting steel bar (1.1) and fixed and locked through the steel sleeve (1.3), and the end of the side is close to the main body side wall; The protection device is arranged in the area surrounded by the enclosure pile, the main body side wall and the bracket device (2), and comprises a protection layer (3.1) and a filling layer (3.2); the protection layer (3.1) is connected with the inner wall of the bracket device (2), and the filling layer (3.2) is filled in the area between the enclosure pile, the main body side wall and the protection layer (3.1). The connecting steel bar (1.1) is made of a threaded steel bar with a diameter of 25 mm, and the total length is 400 mm.

2. The apparatus of claim 1, wherein, The connecting steel bar (1.1) is provided with a first thread with a length of 60 mm from bottom to top, the steel sleeve (1.3) is provided with a second thread matched with the first thread, and the connecting steel bar (1.1) is threadedly connected with the steel sleeve (1.3).

3. The apparatus of claim 2, wherein, The bracket device (2) is made of two angle steels with a specification of 50 mm*50 mm*5 mm and welded in L-shaped structure.

4. The apparatus of claim 1, wherein, The two sides of the bracket device (2) are provided with long strip-shaped punching holes, one side of the bracket device (2) is fixedly connected with the side wall of the enclosure pile through an expansion bolt, and stainless steel gaskets (1.2) are arranged between the steel sleeve (1.3) and the long strip-shaped punching hole and between the expansion bolt and the long strip-shaped punching hole.

5. The apparatus of claim 4, wherein, The steel sleeve (1.3) is specifically a steel bar connector with a specification of 25 mm*60 mm.

6. The apparatus of claim 5, wherein, The protection layer (3.1) is specifically a wood board layer with a thickness of 3 cm.

7. The apparatus of claim 1, wherein, The filling layer (3.2) is specifically a non-combustible rock wool layer.

8. The apparatus of claim 1, wherein, The connecting steel bar (1.1) is 5D double-sided welded with the reserved steel bar on the enclosure pile.

9. The apparatus of claim 1, wherein, The diameter of the expansion bolt is 20 mm.

10. The apparatus of claim 5, wherein, ​

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