CN215907863U - Prefabricated part for shield tunnel mouth - Google Patents

Abstract

The utility model provides a mouth-shaped prefabricated part of a shield tunnel, which comprises a shield pipeline and a prefabricated part; a plurality of prefabs set up in the shield structure pipeline, are provided with the rubber strip between the adjacent prefabs, and the up end of a plurality of prefabs forms the holding surface of walking, and adjacent prefabs just are close to and have the ground setting of distance between the lateral wall of shield structure pipeline bottom one side. Set to the mode that has the distance between the lateral wall with adjacent prefab and be close to shield structure pipeline bottom one side, can reduce the butt joint height in vertical direction between the adjacent prefab, only need carry out the butt with the upper end of prefab together in the work progress can, the distance has between the adjacent prefab lower extreme, can provide the gap of sufficient surplus space adjustment prefab upper end for the lower extreme of adjacent prefab, the gap width that will assemble the mouth reduces to minimum, make adjacent prefab upper end be in the butt state all the time, the in-process of effectively having avoided the installation prefab phenomenon such as wrong platform appears, reduce and assemble the degree of difficulty, improve the engineering quality.

Description

Prefabricated part for shield tunnel mouth

Technical Field

The utility model relates to the technical field of shield tunnel mouth-shaped prefabricated part equipment, in particular to a shield tunnel mouth-shaped prefabricated part.

Background

The shield tunnel is very high in mechanization level and prefabrication and assembly degree, mouth-shaped components are mostly adopted below a roadway plate for prefabrication and assembly, after assembly, joints are opened, staggered platforms are very obvious, and the design shapes and construction methods of the mouth-shaped components need to be researched.

Traditional mouth type component adopts integral rectangle section at tunnel axis tangential direction, and two piece mouth type components can be hugged closely in theory, avoid opening and wrong platform. The actual condition is that the assembly axis of the duct piece is not parallel to the assembly axis of the mouth-shaped piece, and an included angle exists. The axis included angle is definite, and the higher the mouth-shaped piece is, the larger the splicing seam opening is. The height of the mouth-shaped part is constant, and the larger the included angle is, the larger the opening of the splicing seam is.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a prefabricated shield tunnel mouth piece, which aims to solve the problems that in the prior art, a splicing seam of a shield tunnel mouth piece is large and a slab staggering phenomenon occurs.

In order to achieve the above object, according to one aspect of the present invention, there is provided a shield tunnel mouth-type preform including a shield tunnel; the prefab, the prefab is a plurality of, and a plurality of prefabs set up in the shield structure pipeline, are provided with the rubber strip between the adjacent prefab, and the holding surface is walked to the up end of a plurality of prefabs, and adjacent prefab just is close to and has distance ground setting between the lateral wall of shield structure pipeline bottom one side.

Further, the terminal surface of the first end of prefab forms the walking holding surface, and the second end of prefab and the bottom butt of shield pipe way, the lateral wall butt ground setting of adjacent prefab first end have between the adjacent prefab second end apart from setting up, and the rubber strip sets up in the lateral wall department of adjacent prefab butt.

Furthermore, the plurality of prefabricated components comprise a first prefabricated component, and a first groove is formed in a first side wall of the first prefabricated component; the second recess has been seted up on the lateral wall of second prefab, second prefab and first lateral wall butt, and the second recess cooperatees with first recess and establishes into accommodation space in order enclosing, and the rubber strip sets up in accommodation space.

Further, the thickness of the rubber strip is greater than the sum of the depths of the first groove and the second groove.

Further, the rubber strip is of a hollow structure.

Further, one of two adjacent prefabs is provided with mounting groove structure, and mounting groove structure is used for pre-installation rubber strip.

Further, the prefabricated member comprises a supporting transverse section, and the supporting transverse section is arranged along the horizontal direction; the first end of the first vertical supporting section is connected with the first end of the supporting transverse section, and the second end of the first vertical supporting section is abutted against the side wall of the shield pipeline; the first end of the second vertical supporting section is connected with the second end of the supporting transverse section, the second vertical supporting section is arranged opposite to the first vertical supporting section, and the second end of the second vertical supporting section is abutted against the side wall of the shield pipeline; wherein, the rubber strip sets up between adjacent horizontal section of support, first vertical support section with the vertical support section of second is T shape structure.

Furthermore, two sides of the supporting transverse section are respectively provided with a limiting flange.

Furthermore, a pouring piece is arranged on the side wall of the shield pipeline between the first vertical supporting section and the second vertical supporting section.

Furthermore, a leveling layer and a pavement surface layer are sequentially arranged above the walking supporting surface.

By applying the technical scheme of the utility model, the distance is set between the side walls of the adjacent prefabricated parts and the side close to the bottom of the shield tunnel, so that the butt joint height of the adjacent prefabricated parts in the vertical direction can be reduced, the upper ends of the prefabricated parts are butted together only in the construction process, and because the distance is reserved between the lower ends of the adjacent prefabricated parts, enough margin space can be provided for the lower ends of the adjacent prefabricated parts to adjust the gaps at the upper ends of the prefabricated parts, the gap width of the splicing port is reduced to the minimum, the upper ends of the adjacent prefabricated parts are always in a butted state, the phenomena of slab staggering and the like in the process of installing the prefabricated parts are effectively avoided, and the shield tunnel mouth-shaped prefabricated part adopting the structure effectively reduces the splicing difficulty and improves the engineering quality.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

figure 1 shows a schematic structural view of a first embodiment of a shield tunnel mouth preform according to the present invention;

figure 2 shows a schematic structural view of a second embodiment of a shield tunnel mouth preform according to the present invention;

figure 3 shows a schematic structural view of a third embodiment of a shield tunnel mouth preform according to the present invention;

figure 4 shows a schematic structural view of a first embodiment of a preform of a shield tunnel mouth preform according to the present invention;

figure 5 shows a schematic structural view of a second embodiment of a preform of a shield tunnel mouth preform according to the present invention;

fig. 6 shows a schematic structural view of a third embodiment of a preform of a shield tunnel mouth preform according to the present invention.

Wherein the figures include the following reference numerals:

10. a shield pipe;

20. a prefabricated member; 200. a supporting transverse section; 201. a first vertical support section; 202. a second vertical support section; 203. a limiting flange; 21. a first preform; 211. a first groove; 22. a second preform;

30. a rubber strip;

40. a walking support surface; 41. leveling the layer; 42. a pavement facing;

50. and (5) pouring the part.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 and 2, according to an embodiment of the present invention, a shield tunnel mouth preform is provided.

Specifically, as shown in fig. 1, the shield tunnel mouth type preform includes a shield tunnel 10 and a preform 20. The prefabricated member 20 is a plurality of, and a plurality of prefabricated members 20 set up in shield tunnel 10, are provided with rubber strip 30 between the adjacent prefabricated member 20, and the up end of a plurality of prefabricated members 20 forms walking bearing surface 40, and adjacent prefabricated member 20 just has to set up apart from having between the lateral wall that is close to shield tunnel 10 bottom one side.

By applying the technical scheme of the utility model, the distance is set between the side walls of the adjacent prefabricated parts 20 close to one side of the bottom of the shield pipeline 10, so that the butt joint height between the adjacent prefabricated parts 20 in the vertical direction can be reduced, the upper ends of the prefabricated parts 20 are only required to be butted together in the construction process, and due to the distance between the lower ends of the adjacent prefabricated parts 20, enough margin space can be provided for the lower ends of the adjacent prefabricated parts 20 to adjust the gaps at the upper ends of the prefabricated parts 20, namely, the gap width of the splicing port is reduced to the minimum, so that the upper ends of the adjacent prefabricated parts 20 are always in a butted state, the phenomena of slab staggering and the like in the process of installing the prefabricated parts 20 are effectively avoided, and the shield tunnel mouth-shaped prefabricated part adopting the structure effectively reduces the splicing difficulty and improves the engineering quality.

Specifically, as shown in fig. 1, an end surface of a first end of the preform 20 forms a walking support surface 40, and a second end of the preform 20 abuts against the bottom of the shield tunnel 10. As shown in fig. 2, the sidewalls of the first ends of the adjacent prefabricated members 20 are disposed in an abutting manner, the second ends of the adjacent prefabricated members 20 are disposed with a distance therebetween, and the rubber strip 30 is disposed at the sidewall where the adjacent prefabricated members 20 abut. The prefabricated part 20 can be tightly matched with the walking supporting surface 40 and the shield pipeline 10 due to the arrangement, and the rubber strips 30 are arranged at the side walls abutted against the prefabricated part 20, so that a buffer effect on component collision is realized during assembly. The arrangement also reduces the butt joint height of the splicing part, can effectively control the opening of the splicing seam of the shield tunnel mouth-shaped part, and improves the engineering quality.

As shown in fig. 2, the plurality of preforms 20 includes a first preform 21 and a second preform 22. A first groove 211 is formed on a first sidewall of the first preform 21. The second recess has been seted up on the lateral wall of second prefab 22 and first lateral wall butt, and the second recess cooperatees with first recess 211 and establishes into accommodation space in order enclosing, and rubber strip 30 sets up in accommodation space. This arrangement provides a space for accommodating the rubber strip 30, and also provides a cushioning effect when the first and second preforms 21 and 22 are assembled.

The thickness of the rubber strip 30 is greater than the sum of the depths of the first recess 211 and the second recess. Due to the arrangement, the close adhesion of the splicing seams between the adjacent prefabricated members 20 is ensured through the extrusion of the rubber strips 30 during the assembly.

As shown in fig. 3, the rubber strip 30 has a hollow structure. This arrangement improves the elasticity of the rubber strip 30, and at the same time, plays a role in reducing the cost of the rubber strip 30.

As shown in fig. 3, one of the adjacent two preforms 20 is provided with a mounting groove structure for pre-loading the rubber strip 30. This arrangement facilitates the installation of the rubber strip 30 and provides a receiving space for the rubber strip 30.

As shown in fig. 1 to 6, the preform 20 includes a support cross section 200, a first vertical support section 201, and a second vertical support section 202. The supporting lateral section 200 is disposed in a horizontal direction. The first end of the first vertical support section 201 is connected with the first end of the support horizontal section 200, and the second end of the first vertical support section 201 is abutted against the side wall of the shield pipeline 10. The first end of the second vertical support section 202 is connected with the second end of the support transverse section 200, the second vertical support section 202 is arranged opposite to the first vertical support section 201, the second end of the second vertical support section 202 is abutted against the side wall of the shield pipeline 10, and the first vertical support section 201 and the second vertical support section 202 are of a T-shaped structure. Wherein the rubber strip 30 is disposed between adjacent support cross sections 200. The arrangement enables the structure of the prefabricated part 20 and the shield pipeline 10 to be simple and compact, and improves the installation stability of the prefabricated part 20. In addition, the T-shaped design of the first vertical supporting section 201 and the second vertical supporting section 202 along the axis direction of the tunnel reduces the butt joint height of the splicing part, is more convenient for construction, can effectively control the opening of the splicing seam of the shield tunnel mouth-shaped piece, and improves the engineering quality.

As shown in fig. 1, 4 and 6, the support horizontal section 200 is provided with a limit flange 203 on each side. This arrangement further improves the mounting stability of the preform 20.

As shown in fig. 4, a casting 50 is disposed on the sidewall of the shield pipeline 10 between the first vertical support section 201 and the second vertical support section 202, and a "mouth" shape is enclosed among the first vertical support section 201, the second vertical support section 202, the support horizontal section 200 and the casting 50. The arrangement is convenient for arranging the prefabricated part 20 on the shield pipeline 10, and meanwhile, the first vertical supporting section 201 and the second vertical supporting section 202 play a supporting role, and the installation stability of the prefabricated part 20 is further improved.

As shown in fig. 1, a leveling layer 41 and a road surface layer 42 are provided in this order above the walking support surface 40. The shield tunnel is convenient for workers to construct.

Reducing the butt joint height of the small-mouth-shaped part at the splicing part is one of the methods for controlling the opening of the splicing seam. By applying the technical scheme of the utility model, the section form of the shield tunnel mouth-shaped piece at the splicing part is optimized, the weight of the mouth-shaped piece is reduced, the investment is saved, the butt joint height of the splicing part is reduced, the opening of the splicing seam of the shield tunnel mouth-shaped piece can be effectively controlled, and the engineering quality is improved.

The prefabricated part 20 can be a new type of shield tunnel mouth-shaped part, and the new type of the shield tunnel mouth-shaped part effectively reduces the butt joint height of the longitudinal splicing part and reduces the splicing seam opening. And shield tunnel mouth type spare sets up the rubber strip in vertical concatenation department, cushions the component collision when assembling, and through the extrusion of rubber strip, the close contact of concatenation seam has been guaranteed simultaneously.

The specific construction process of the shield tunnel mouth shaped piece is as follows:

the construction of the shield tunnel 10 is completed, and the shield tunnel 10 may be a shield segment.

The preform 20 is completed, and the preform 20 may be a mouth-shaped member.

The rubber strip 30 installation is completed.

And finishing the installation construction of the prefabricated member 20.

The casting 50 is completed, and the casting 50 may be a cast-in-place layer.

And finishing the construction of the leveling layer 41.

The construction of the pavement surface 42 is completed.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously positioned and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the utility model to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A shield tunnel mouth type prefabricated part is characterized by comprising:

a shield conduit (10);

prefab (20), prefab (20) are a plurality of, and are a plurality of prefab (20) set up in shield structure pipeline (10) is interior, and is adjacent be provided with rubber strip (30) between prefab (20), and is a plurality of the up end of prefab (20) forms walking holding surface (40), and is adjacent prefab (20) just is close to shield has between the lateral wall of pipeline (10) bottom one side apart from setting up.

2. The shield tunnel mouth-type preform according to claim 1, characterized in that the end surface of the first end of the preform (20) forms the walking bearing surface (40), the second end of the preform (20) abuts the bottom of the shield tunnel (10), the side walls adjacent to the first end of the preform (20) are arranged in abutment, the second end of the adjacent preform (20) is arranged with a distance therebetween, and the rubber strip (30) is arranged at the side wall adjacent to the abutment of the preform (20).

3. A shield tunnel mouth preform according to claim 1 or 2, wherein a plurality of said preforms (20) comprises:

the device comprises a first prefabricated part (21), wherein a first groove (211) is formed in a first side wall of the first prefabricated part (21);

second prefab (22), second prefab (22) with the second recess has been seted up on the lateral wall of first lateral wall butt, the second recess with first recess (211) cooperate in order to enclose and establish into accommodation space, rubber strip (30) set up in the accommodation space.

4. A shield tunnel mouth preform according to claim 3, wherein the thickness of the rubber strip (30) is greater than the sum of the depths of the first groove (211) and the second groove.

5. A shield tunnel mouth preform according to claim 3, characterized in that the rubber strip (30) is of hollow construction.

6. Shield tunnel mouth preform according to claim 1, wherein one of two adjacent preforms (20) is provided with a mounting groove structure for pre-mounting the rubber strip (30).

7. Shield tunnel mouth-type preform according to claim 1, characterized in that said preform (20) comprises:

a supporting transverse section (200), wherein the supporting transverse section (200) is arranged along the horizontal direction;

a first vertical support section (201), wherein a first end of the first vertical support section (201) is connected with a first end of the support transverse section (200), and a second end of the first vertical support section (201) is abutted with the side wall of the shield pipeline (10);

a second vertical support section (202), wherein a first end of the second vertical support section (202) is connected with a second end of the support transverse section (200), the second vertical support section (202) is arranged opposite to the first vertical support section (201), and a second end of the second vertical support section (202) is abutted against the side wall of the shield pipeline (10);

the rubber strip (30) is arranged between the adjacent supporting transverse sections (200), and the first vertical supporting section (201) and the second vertical supporting section (202) are of T-shaped structures.

8. The shield tunnel mouth preform according to claim 7, characterized in that the support cross section (200) is provided with a stop flange (203) on each side.

9. The shield tunnel mouth preform according to claim 7, characterized in that a casting (50) is provided on the side wall of the shield conduit (10) between the first vertical support section (201) and the second vertical support section (202).

10. The shield tunnel mouth preform according to claim 1, characterized in that a leveling layer (41) and a pavement surface layer (42) are arranged above the walking support surface (40) in sequence.

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