Temporary supporting device for reinforcing connecting channel duct pieces

Abstract

The utility model provides a temporary supporting device for connecting channel duct piece reinforcement, which comprises a support, the support comprises an arc-shaped supporting piece, a bearing unit is arranged below the arc-shaped supporting piece, and a plurality of screw jacks are arranged in the arc-shaped supporting piece; the top of the vertical supporting piece is connected with the arc-shaped supporting piece, and the bottom of the vertical supporting piece is connected with the bearing unit; one end of the transverse supporting piece is connected with the vertical supporting piece, and the other end of the transverse supporting piece is connected with the arc-shaped supporting piece. The vertical supporting pieces are arranged on the bearing units, the arc-shaped supporting pieces are fixed to the duct pieces through the vertical supporting pieces and the transverse supporting pieces, a track laying construction space and a track laying machine passing space are formed, and prestress is applied to the supports through the screw jacks arranged on the arc-shaped supporting pieces; according to the construction method, it is guaranteed that the duct pieces do not deform in the surrounding soil freezing and unfreezing process in freezing method construction, track laying construction and operation are guaranteed, meanwhile, a system formed by the support can also be used for duct piece holing, reinforcing and supporting, and the overall structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel segment reinforcement, in particular to a temporary support device for reinforcing a communication channel segment. Background Art

[0002] With the gradual acceleration of my country's modernization process, underground railways have gradually become major municipal construction projects. In the construction of underground railways, the freezing construction technology of shield tunnel connecting channels has gradually matured, and has become an important construction method for connecting channels under complex geological and hydrological environments. The freezing method uses artificial refrigeration to freeze the soil in the area to be excavated, forming a frozen curtain within a certain range. The frozen curtain forms pressure. In order to ensure that the segments are not deformed and damaged by the pressure of the freezing curtain, supports are used to reinforce the segments.

[0003] The existing technology of segment reinforcement adopts "M"-shaped dense support, which can ensure the segment reinforcement effect, but it is large in size, complicated in support, difficult to operate, and completely blocks the shield tunnel. When the construction period is tight, track laying and connecting channel construction need to be carried out simultaneously. Other forms of segment reinforcement support cannot meet the clearance requirements for track laying construction machinery to pass through, cannot reserve the required curve equipment limits, and cannot meet the requirements for simultaneous construction of track laying and connecting channel segment reinforcement. Utility Model Content

[0004] The utility model provides a temporary support device for reinforcing a communication channel pipe segment.

[0005] To achieve the above purpose, the technical solution of the utility model is: a temporary support device for reinforcing a communication channel segment, comprising a bracket, wherein the bracket comprises:

[0006] An arc-shaped support member, a bearing unit is arranged below the arc-shaped support member, and a plurality of screw jacks are arranged inside the arc-shaped support member;

[0007] A vertical support member, the top of which is connected to the arc-shaped support member, and the bottom of which is connected to the bearing unit;

[0008] A transverse support member, one end of which is connected to the vertical support member, and the other end of which is connected to the arc-shaped support member.

[0009] Preferably, two vertical support members are provided, the two vertical support members are respectively connected to two sides of the arc-shaped support member, and four transverse support members connected to the vertical support members are provided, and the four transverse support members are equidistantly spaced from top to bottom.

[0010] Preferably, the bearing unit is an H-shaped steel, a steel plate corbel is provided at the lower portion of the H-shaped steel, and the steel plate corbel is fixed to the pipe segment by adjacent annular bolts.

[0011] Preferably, silicone rubber pads are arranged at intervals on the arc-shaped support members.

[0012] Preferably, the arc shape of the arc-shaped support member is a major arc.

[0013] Preferably, four screw jacks are provided and distributed in pairs on both sides of the arc-shaped support member.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging vertical support members on the bearing units, the arc-shaped support members are fixed on the pipe segments through the vertical support members and the transverse support members, thereby forming a track-laying construction space and a passage space for track-laying machinery; the prestress is applied to the bracket by the screw jack arranged on the arc-shaped support members, so as to ensure that the pipe segments do not deform during the freezing and thawing of the surrounding soil during the freezing method construction, and to ensure the track-laying construction and operation; at the same time, the system formed by the bracket can also be used as a reinforcement support for the pipe segment opening, and the overall structure is simple and the reinforcement effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of a temporary support device for reinforcing a communication channel segment provided by the utility model;

[0017] Figure 2 It is a cross-sectional view of a temporary support device for reinforcing a communication channel segment provided by the utility model.

[0018] Reference numerals:

[0019] 10. Bracket; 11. Arc support; 12. Load-bearing unit; 13. Screw jack; 14. Vertical support; 15. Horizontal support; 16. Steel bar corbel; 17. Silicon rubber pad; 20. Truss. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a temporary support device for reinforcing a connecting channel segment, which is used during track laying. It should be understood that during track laying, the concrete of the roadbed at the bottom of the tunnel has been poured and the bottom of the roadbed has been closed. The temporary support device includes a plurality of brackets 10, and adjacent brackets 10 are connected by trusses 20. The brackets 10 include arc-shaped supports 11, load-bearing units 12, screw jacks 13, vertical supports 14 and transverse supports 15.

[0022] Specifically, the arc support member 11 is an arc with an open bottom, a bearing unit 12 is arranged below the arc support member 11, a plurality of screw jacks 13 are arranged inside the arc support member 11, the screw jacks 13 are used to apply prestress to the support device, the top of the vertical support member 14 is connected to the arc support member 11, and the bottom thereof is connected to the bearing unit 12, one end of the transverse support member 15 is connected to the vertical support member 14, and the other end thereof is connected to the arc support member 11.

[0023] By arranging vertical support members 14 on the bearing unit 12, the arc support members 11 are fixed on the pipe segment through the vertical support members 14 and the transverse support members 15, so as to form track-laying construction space and passage space for track-laying machinery. The screw jacks 13 arranged on the arc support members 11 apply prestress to the bracket 10 to ensure that the pipe segment does not deform during the freezing and thawing of the surrounding soil during the freezing method construction, and to ensure the track-laying construction and operation. At the same time, the device formed by the bracket 10 can also be used as a reinforcement support for the pipe segment opening, and the overall structure is simple and the reinforcement effect is good.

[0024] Specifically, two vertical support members 14 are provided, and the two vertical support members 14 are respectively connected to the two sides of the arc-shaped support member 11, and four transverse support members 15 connected to the vertical support members 14 are provided, and the four transverse support members 15 are arranged at equal intervals from top to bottom. In this way, the structural stability of the bracket 10 can be ensured. Of course, in other embodiments, three or five transverse support members 15 can also be provided.

[0025] Specifically, the bearing unit 12 is an H-shaped steel with a size of 200mm×200mm×8mm×12mm and arranged longitudinally. A steel plate corbel is provided at the lower part of the H-shaped steel. The steel plate corbel is made of 15mm thick steel plates and is fixed to the pipe segment by adjacent annular bolts.

[0026] In the present application, the arc-shaped support member 11 is an arc-shaped support rod, the vertical support member 14 is a vertical support column, and the transverse support member 15 is a transverse support rod.

[0027] In one embodiment, silicone rubber pads 17 are arranged on the arc-shaped support members 11 at intervals of 0.2 m as a protective measure to avoid damage to the segments when prestress is applied.

[0028] In one embodiment, four screw jacks 13 are provided, which are distributed in pairs on both sides of the arc-shaped support member 11. The four screw jacks 13 apply prestress to the support device.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A temporary support device for reinforcing a connecting channel segment, characterized in that: A bracket is included, wherein the bracket includes: An arc-shaped support member, a bearing unit is arranged below the arc-shaped support member, and a plurality of screw jacks are arranged inside the arc-shaped support member; A vertical support member, the top of which is connected to the arc-shaped support member, and the bottom of which is connected to the bearing unit; A transverse support member, one end of which is connected to the vertical support member, and the other end of which is connected to the arc-shaped support member.

2. The temporary support device for reinforcing the connecting channel segments according to claim 1 is characterized in that: Two vertical support members are provided, and the two vertical support members are respectively connected to two sides of the arc-shaped support member. Four transverse support members connected to the vertical support members are provided, and the four transverse support members are equidistantly spaced from top to bottom.

3. The temporary support device for reinforcing the connecting channel segments according to claim 1 is characterized in that: The bearing unit is an H-shaped steel, a steel plate corbel is arranged at the lower part of the H-shaped steel, and the steel plate corbel is fixed to the pipe segment by adjacent annular bolts.

4. The temporary support device for reinforcing the connecting channel segments according to claim 1 is characterized in that: Silicon rubber pads are arranged at intervals on the arc-shaped supporting members.

5. A temporary support device for reinforcing a connecting channel segment according to claim 1, characterized in that: The arc shape of the arc-shaped support member is a major arc.

6. A temporary support device for reinforcing a communication channel segment according to claim 1, characterized in that: Four screw jacks are provided and distributed in pairs on both sides of the arc-shaped support member.

Images