CN211201995U

CN211201995U - Tunnel secondary lining arch portion gap slip casting hole block structure and block subassembly

Info

Publication number: CN211201995U
Application number: CN201921853511.2U
Authority: CN
Inventors: 杜海波
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-07
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a tunnel secondary lining hunch portion space slip casting hole block structure for the shutoff of slip casting hole to a shutoff subassembly has been published, including the grout hole to and from rubber layer, expansion member and the screw that grout hole pore wall inwards set gradually, the rubber layer is extruded and takes place elastic deformation, the rubber layer covers the bottom and the part side of expansion member at least, is the grout filler in remaining space. Construction is convenient, can be under construction through cross screwdriver instrument, convenient and fast. The utility model provides a rubber layer has fine from deformability, can carry out fine shutoff to the grout hole position, can rely on the deformation of self to compensate the space in clearance, avoids here to take place the infiltration phenomenon.

Description

Tunnel secondary lining arch portion gap slip casting hole block structure and block subassembly

Technical Field

The utility model relates to a tunnel construction technical field.

Background

In highway municipal road engineering, tunnels are widely used. When the secondary lining of the tunnel is carried out, a secondary lining trolley is generally adopted as an inner mold, and concrete pouring is carried out by adopting a window-by-window layer-by-layer method. However, after the poured concrete is formed, solid settlement and shrinkage can occur, the arch crown of the tunnel is easy to be hollow, the arch crown can crack and collapse at the later stage, and the like, so that the engineering quality of the secondary lining is seriously influenced. The current treatment mode is to use grouting technology to perform grouting on the hole part and form plugging after grouting.

After grouting, the grouting hole is generally automatically plugged by slurry, and no special treatment measures are taken. Water seepage and leakage of the grouting holes are easily caused. The water seepage phenomenon can cause the water stain phenomenon to be generated on the inner surface of the tunnel, seriously influences the attractiveness of the tunnel and is not allowed to appear.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art, the utility model provides a tunnel secondary lining hunch portion space slip casting hole block structure for the easy problem that produces the infiltration of slip casting hole shutoff department after solving tunnel slip casting.

The utility model provides a technical scheme that its technical problem adopted does:

a tunnel secondary lining arch part gap grouting hole plugging structure is used for plugging a grouting hole and is characterized in that the grouting hole, a rubber layer, an expansion component and a screw are sequentially arranged inwards from the wall of the grouting hole, the rubber layer is extruded and elastically deformed along with the expansion of the expansion component in the process of fastening the screw, the rubber layer at least covers the bottom and partial side faces of the expansion component, and grouting filler is filled in the rest space.

The expansion component and the rubber layer are of separate structures which are sleeved and connected with each other.

The expansion member is internally provided with a conical hole, and the expansion member is provided with a crack and an anti-skid groove.

The expansion member and the screw are engineering plastic parts.

Barbs are provided on the expansion member.

The rubber layer is attached to and integrated with the outer surface of the expansion member.

The plugging assembly is characterized by comprising an expansion member, a screw and a rubber sleeve, wherein the expansion member is a long cylinder and has a long length, at least part of the inner central axis of the expansion member is provided with a conical hole, the conical hole is reduced from an opening to the bottom, and the screw with the same specification is screwed into the conical hole and has a tendency of expanding outwards.

The utility model has the advantages that:

1. construction is convenient, can be under construction through cross screwdriver instrument, convenient and fast.

2. The rubber layer has good self-deformability, can well plug the grouting hole, can compensate the space of the gap by means of self deformation, and avoids the water seepage phenomenon at the position.

3. The plugging components are all made of weather-proof and corrosion-resistant non-metallic materials, so that long-term service can be realized, corrosion cannot occur, and corrosion failure is avoided.

Drawings

Figure 1 is a perspective view of a closure assembly.

Fig. 2 is a perspective view of the expansion member.

Fig. 3 is a perspective view of the expansion member.

Figure 4 is a cross-sectional view of the occluding assembly (with screws omitted).

Figure 5 is a cross-sectional view of the occluding assembly.

Fig. 6 is a schematic view of a plugging structure in the first embodiment.

In the figure: 10 expansion member, 11 conical hole, 12 crack, 13 barb, 14 groove, 15 crack,

20 of the screw rod, and the screw rod,

30 of a rubber sleeve, and a rubber sleeve,

40 grouting filler.

Detailed Description

Example one

Tunnel secondary lining arch space slip casting hole block structure is based on the shutoff technique in the slip casting hole after current slip casting, and this technique has quick shutoff, prevents the effect of leaking the thick liquid through using special component to block off the slip casting hole position.

Referring to fig. 1 to 6, in the present embodiment, a plugging assembly is used, which is composed of an expansion member 10, a screw 20 and a rubber sleeve 30, wherein the expansion member 10 is a long cylinder having a long length, and a conical hole 11 is at least partially formed at the position of the inner central axis of the expansion member, and the conical hole is reduced from the opening to the bottom, that is, the screw with the same specification is screwed into the conical hole and has a tendency to expand outwards. The expansion member and the screw are made of engineering plastics, so that the expansion member and the screw have strength, and can meet long-term rust-free requirements and engineering requirements.

At the bottom of the expansion element 10, an opening 12 is provided for the deformation of the expansion element to self-expand after the screw is screwed in.

The expansion member is preferably made of corrosion-resistant copper bar or nylon bar.

Further, barbs 13 may be provided on the expansion member 10 near the opening for engaging the grout holes. Meanwhile, the outer surface of the expansion member can be provided with an anti-slip and anti-retreat groove 14, so that the bonding strength with the rubber sleeve is improved.

The rubber sleeve 30 is made of flexible self-deformable rubber or silicone, has a long length and a closed bottom, and forms a long sleeve-shaped structure with a side wall and a bottom, and is at least 2 mm thick and is sleeved on the outer surface of the expansion member in advance to avoid damage.

The concrete plugging process is as follows, after grouting is finished, the plugging assembly is plugged into the grouting hole, then a screwdriver is used for fastening the screw, the expansion of the expansion member is accompanied in the screwing process of the screw, the expansion of the expansion member can push the rubber sleeve into the grouting hole to form fixation and plugging, and after the grouting slurry inside the rubber sleeve is hardened, the rubber sleeve is integrated.

In the second embodiment, the first embodiment of the method,

the present embodiment is different from the first embodiment in that the rubber sleeve is not a separate element, and specifically, a rubber layer with an equal thickness is formed outside the expansion member by compounding, that is, the rubber layer is attached to the outer surface of the expansion member to form a whole, which also can achieve the above-mentioned blocking effect.

In this embodiment, the outer surface of the expansion member 10 is smooth and has no barbs, but is provided with slits at the openings for auxiliary fixation of the end portions.

After the two embodiments are constructed, the finally formed plugging structure is as follows: grouting holes, and a rubber layer, an expansion member and screws sequentially arranged from the wall of the grouting hole inward, and grouting filler 40 in the remaining space.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should be able to make various modifications and improvements to the present invention without departing from the spirit of the present invention.

Claims

1. A tunnel secondary lining arch part gap grouting hole plugging structure is used for plugging a grouting hole and is characterized in that the grouting hole, a rubber layer, an expansion component and a screw are sequentially arranged inwards from the wall of the grouting hole, the rubber layer is extruded and elastically deformed along with the expansion of the expansion component in the process of fastening the screw, the rubber layer at least covers the bottom and partial side faces of the expansion component, and grouting filler is filled in the rest space.

2. The tunnel secondary lining arch void grouting hole blocking structure of claim 1, wherein the expansion member and the rubber layer are separate structures that are sleeved and connected with each other.

3. The tunnel secondary lining arch void grouting hole blocking structure of claim 1, wherein the expansion member has a conical hole inside, and a crack opening and a slip-proof groove are provided on the expansion member.

4. The tunnel secondary lining arch void grouting hole blocking structure of claim 1, wherein the expansion member and the screw are engineering plastic.

5. The tunnel secondary lining arch void grouting hole blocking structure of claim 1, wherein barbs are provided on the expansion member.

6. The tunnel secondary lining arch void grouting hole blocking structure of claim 1, wherein the rubber layer is attached to and integrated with an outer surface of the expansion member.

7. The plugging assembly is characterized by comprising an expansion member, a screw and a rubber sleeve, wherein the expansion member is integrally cylindrical, at least part of the inner central axis of the expansion member is provided with a conical hole, the conical hole is reduced from an opening to the bottom, and the screw with the same specification is screwed into the conical hole and has the tendency of outward expansion.