CN215057427U

CN215057427U - Sleeve type embedded part

Info

Publication number: CN215057427U
Application number: CN202120544222.5U
Authority: CN
Inventors: 袁茂亓; 刘健威; 井游琪; 邵帅; 张永兴
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-07
Anticipated expiration: 2031-03-16

Abstract

The utility model belongs to the technical field of tunnel engineering, in particular to bushing type built-in fitting, including waterproof protection pipe cap, bolt, interior sleeve pipe, waterproof sealing plug etc.. The sleeve type embedded parts are mainly connected in a layer-by-layer nesting mode, the waterproof protection pipe cap, the guide pipe cap, the waterproof sealing plug and the inner sleeve or the waterproof sealing plug are sequentially nested, the embedded parts are fixed in concrete lining holes through bolts, manual guide holes for reinforcing the anchor rods are formed, the anchor rod reinforcing mode is provided when the operation tunnel needs to be reinforced, and tunnel surrounding rocks are quickly reinforced. The utility model discloses simple structure can in time consolidate the tunnel country rock to effectively improve anchor bolt support's construction precision and quality, simple economy is fit for popularizing and applying.

Description

Sleeve type embedded part

Technical Field

The utility model belongs to the technical field of tunnel engineering, concretely relates to utilize stock built-in fitting, can consolidate the reinforcement after tunnel operation.

Background

Since the last century, China has vigorously developed highway tunnels, but due to the influence of various factors in construction environment, construction conditions and operation process, more and more tunnels have quality defects and diseases such as cracking of lining, cavities behind lining, insufficient thickness, corrosion of reinforcing steel bars and the like in different degrees in the operation period. Defects and diseases have threatened the normal operation of the tunnel. In addition, the procedure of reinforcing the operation tunnel with the problems of surrounding rock breakage, separation and the like is complicated, construction difficulty is caused, the operation cost and the closed maintenance time of the tunnel are increased, the service duration of the operation tunnel is reduced, and therefore the method for reinforcing the operation tunnel with damage needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing the facility of operation tunnel later stage reinforcement, alleviate the operation maintenance cost in tunnel, it is long when reducing the tunnel seal maintenance, in the tunnel excavation construction, a bushing type built-in fitting is provided, reserve the hole that the stock was strutted on tunnel concrete lining, when the damage such as taking place to come to nothing at the tunnel country rock, go into the stock through the built-in fitting top, can strengthen the country rock once more and bear the arch intensity, reduce the deformation that the country rock produced around, reach and consolidate the tunnel and increase the purpose of operation tunnel service time.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a bushing type built-in fitting, includes waterproof protection pipe cap, bolt, interior sleeve pipe, waterproof shutoff, wherein set up the round hole that corresponds each other on the brim of a hat of waterproof protection pipe cap and pipe cap, can fix waterproof protection pipe cap and pipe cap in the hole is reserved to the concrete through corresponding size bolt, waterproof protection pipe cap and pipe cap are equallyd divide into hatband and brim of a hat part, the internal diameter of waterproof protection pipe cap hatband is the same with pipe cap hatband external diameter, both brim of a hat external diameters are the same. The inner wall of the conduit cap is longitudinally provided with four positioning grooves, the outer wall of the inner sleeve is provided with four positioning convex parts, and the grooves and the convex parts can be completely aligned and superposed to ensure that the inner sleeve can be kept stable in the process of jacking the threaded anchor rod into the surrounding rock. The inner diameter of the inner sleeve is the same as the outer diameter of the threaded anchor rod, and a threaded groove is dug in the inner wall of the inner sleeve and can be completely meshed with the external thread of the threaded anchor rod. For different reinforcement requirements and country rock bearing arch intensity of handling, the utility model provides an interior sleeve pipe of multiple different internal diameters satisfies the screw anchor rod of different external diameters on the market, and the screw anchor rod does not confine to solid stock, also can adopt external screw thread cavity grout stock etc.. When the tunnel does not need to be reinforced, the inner cavity of the conduit cap fixed on the concrete lining is plugged by using the waterproof plug, so that pore water in the soil is prevented from permeating into the tunnel.

Compared with the prior art, the beneficial effects of the utility model are that:

this application improves country rock self bearing capacity through anchor bolt support's self characteristics, alleviates the pressure of tunnel lining, and the country rock carries out the stock and consolidates, and is short for the time of using, can reduce the tunnel and maintain time length and operation cost.

This application can be in advance accurate arrange the position of consolidating the stock through the built-in fitting, and the pitch-row of reasonable control stock removes the process of measurationing before consolidating from, improves the stock and consolidates the construction precision of country rock in-process to can in time carry out the reinforcement to the tunnel that takes place the damage and maintain, effectively reduce the tunnel and cause great incident risk because of damaging the disease.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings that are needed in the technical description of the embodiments will be briefly described below, and it should be apparent that the drawings are only used to illustrate some embodiments of the present invention, and do not limit all embodiments of the present invention thereto.

FIG. 1 is an overall structure diagram of a sleeve type embedded part;

FIG. 2 is an exploded view of a telescoping embedment member element;

FIG. 3 is a front view of a bushing embedment;

FIG. 4 is a top view of a bushing insert;

FIG. 5 is a cross-sectional view of a bushing-type embedment I-I;

FIG. 6 is a schematic view of a bushing embedment installation;

FIG. 7 is a schematic view of the use of a bushing embedment;

FIG. 8 is a cross-sectional view of a tunnel fitted with a sleeve-type embedment;

fig. 9 is a cross-sectional view of a tunnel after bolting with a sleeve insert.

In the attached drawings, 1 is a sleeve type embedded part; 2 is a waterproof protective pipe cap; 3 is a catheter cap; 4 is a bolt; 5 is a waterproof sealing plug; 6, inner sleeve; 7 is an inner sleeve internal thread; 8 is a thread anchor rod; 9. 10 are inner sleeves with different inner diameters; 11 is a concrete lining; and 12 is a surrounding rock.

Detailed Description

The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art.

In the description of the present invention, it should be understood that when an element is referred to as being "connected," "engaged" or "connected" to another element, it can be directly connected or engaged with the other element or intervening elements may be present therebetween, i.e., positional relationships between the direct connection and the indirect connection are encompassed. It should be noted that the use of "four," "six," and the like do not necessarily imply a numerical limitation.

Fig. 1-2 are an overall structural diagram and an exploded component view of the bushing type embedded part according to the present invention. As shown in the figure, the sleeve type embedded part 1 is composed of a waterproof protective pipe cap 2, a conduit cap 3, a bolt 4, a waterproof sealing plug 5 and an inner sleeve 6. The sleeve type embedded parts 1 are mainly connected in a layer-by-layer nesting mode, and the waterproof protective pipe cap 2, the conduit cap 3, the waterproof sealing plug 5 or the inner sleeve 6 are in complete contact on respective contact surfaces when being nested in sequence: the inner wall of a hat ring of the waterproof protection pipe cap 2 is completely contacted with the outer wall of the guide pipe cap 3, the lower side of a hat brim of the waterproof protection pipe cap 2 is completely contacted with the upper side of the hat brim of the guide pipe cap 3, six bolt holes which are distributed in an annular equal angle are arranged at the hat brim of the waterproof protection pipe cap 2, and when the lower side of the hat brim of the waterproof protection pipe cap 2 is nested with the guide pipe cap 3, the bolt holes at the hat brim of the waterproof protection pipe cap 2 are ensured to be aligned and superposed; the catheter cap 3 is nested with the inner sleeve 6, the groove on the inner wall of the cap ring of the catheter cap 3 is completely aligned and superposed with the convex part on the outer wall of the inner sleeve 6, the inner sleeves with different inner diameters, such as the

inner sleeves

9 and 10, can be customized, and the requirement of nesting anchor rods with different diameters is met; the outer diameter of the threaded anchor rod 8 is equal to the inner diameter of the inner sleeve 6, the threads of the threaded anchor rod 8 are meshed with the corresponding inner sleeve internal threads 7 on the inner wall of the inner sleeve 6, so that meshing force is provided for the threaded anchor rod 8 pushed into the surrounding rock, and the threaded anchor rod 8 is prevented from sliding in the embedded part 1; the protruding department of 5 outer walls of waterproof sealing plug and 3 cap ring inner wall recesses of pipe cap are counterpointed and are coincide, and when the built-in fitting buries the concrete lining, when need not consolidate the operation to the country rock, it is waterproof to carry out the shutoff with waterproof sealing plug 5 to pipe cap 3, in order to prevent flowing water infiltration tunnel in the country rock crack, infringement lining structure.

Fig. 3-5 are front, top and I-I sectional views of a bushing insert according to the present invention. As shown in the figure, all elements of the embedded part 1 before being reinforced are nested from outside to inside in the sequence of a waterproof protective pipe cap 2, a conduit cap 3 and an inner sleeve 6, contact surfaces among all the elements are overlapped, and the embedded part 1 which is nested is fixed on the inner wall of the concrete lining through bolt holes of the conduit cap 3 and the waterproof protective pipe cap 2 by using bolts 4.

Fig. 6 is a schematic view of the installation of the bushing-type embedded part according to the present invention. As shown in the figure, before the tunnel is built and the concrete lining is poured 11, design drawings are arranged according to embedded parts 1, holes are reserved through a circular template, the hole diameter is the outer diameter of a hat band of a waterproof protection pipe cap 2, the hole depth is the thickness of the concrete lining 11, the waterproof protection pipe cap 2 stretches into the hole depth to be the thickness of the concrete lining 11, the template is detached after the concrete lining is maintained, the waterproof protection pipe cap 2 stretches into the reserved hole to be in contact with surrounding rocks 12, a guide pipe cap 3 is embedded into the waterproof protection pipe cap 2 until the guide pipe cap and the guide pipe cap are in contact with each other, bolt holes at the position of the guide pipe cap coincide, the guide pipe cap is fixed on the concrete lining 11 through bolts 4, and the inner cavity of the guide pipe cap 3 is plugged through a waterproof sealing plug 5.

Fig. 7 is a schematic view of the use of the bushing-type embedded part according to the present invention. As shown in the figure, when the tunnel that is furnished with the bushing type built-in fitting is consolidated, take out waterproof sealing plug 5, in sleeve pipe 6 embedding pipe cap 3, the screw anchor rod 8 is pushed into the country rock through interior sleeve pipe 6 internal thread 7 according to the standard requirement and is accomplished the reinforcement process.

Fig. 8 is a cross-sectional view of the tunnel with the sleeve-type embedded part according to the present invention. As shown in the figure, according to the pre-embedded part layout design drawing, the embedded parts 1 are installed when the tunnel is built.

Fig. 9 is a cross-sectional view of a tunnel after bolting with a telescoping embedment. As shown in the figure, damage and disease problems occur in the tunnel operation process, the threaded anchor rod 8 can be immediately utilized to carry out reinforcement treatment on tunnel surrounding rocks through the embedded part 1, and the stability of the surrounding rocks is maintained.

The aforesaid is only the utility model discloses a condition in tunnel construction. In actual conditions, components such as metal nets, steel arches and the like are laid in the construction process of the tunnel, and the installation of embedded parts needs to be reasonably avoided.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. The sleeve type embedded part is characterized by comprising a waterproof protective pipe cap (2), a conduit cap (3), a bolt (4), a waterproof seal plug (5) and an inner sleeve (6), wherein the waterproof protective pipe cap (2), the conduit cap (3), the waterproof seal plug (5) and the inner sleeve (6) are sequentially nested to form the sleeve type embedded part (1), the sleeve type embedded part (1) is fixed on a concrete lining (11) by the bolt (4), the waterproof seal plug (5) is sealed in an inner cavity of the conduit cap (3) when the waterproof seal plug is not reinforced, the waterproof seal plug (5) is embedded in the inner sleeve (6) when the waterproof seal plug is reinforced, and a threaded anchor rod (8) is jacked into a surrounding rock (12) through an internal thread (7) of the inner sleeve (6); the waterproof protective pipe cap (2) and the guide pipe cap (3) are respectively provided with a cap ring and a cap brim, the inner wall of the cap ring of the waterproof protective pipe cap (2) is completely contacted with the outer wall of the cap ring of the guide pipe cap (3), the lower side of the cap brim of the waterproof protective pipe cap (2) is completely contacted with the upper side of the cap brim of the guide pipe cap (3), the outer diameters of the cap brim and the cap brim are equal, bolt holes which are distributed in equal number and equal distribution are arranged at the two cap brim, and when the waterproof protective pipe cap (2) is nested with the guide pipe cap (3), the bolt holes at the two cap brim are superposed in an aligned mode; the catheter cap (3) is nested with the inner sleeve (6), the inner wall of the catheter cap (3) is provided with a groove, the outer wall of the inner sleeve (6) is provided with a convex part, the groove and the convex part are distributed in equal number and equal distribution, so that the inner wall of a cap ring of the catheter cap (3) is completely attached to the outer wall of the inner sleeve (6), and the groove in the inner wall of the catheter cap (3) is aligned with the convex part on the outer side of the inner sleeve (6) and then nested; the outer wall of the waterproof sealing plug (5) is provided with a convex part which is aligned with the groove of the catheter cap (3) and then nested to seal the inner cavity of the catheter cap (3); the thread of the thread anchor rod (8) is meshed with the inner sleeve inner thread (7) corresponding to the inner wall of the inner sleeve (6), and the outer diameter of the thread anchor rod (8) is equal to the inner diameter of the inner sleeve (6).