CN209818077U - Prefabricated section coupling assembling and have its inverted arch structure - Google Patents
Prefabricated section coupling assembling and have its inverted arch structure Download PDFInfo
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- CN209818077U CN209818077U CN201822270206.2U CN201822270206U CN209818077U CN 209818077 U CN209818077 U CN 209818077U CN 201822270206 U CN201822270206 U CN 201822270206U CN 209818077 U CN209818077 U CN 209818077U
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Abstract
The utility model provides a prefabricated section coupling assembling and have its inverted arch structure. Prefabricated section coupling assembling is used for connecting two adjacent inverted arch prefabricated sections, and prefabricated section coupling assembling includes: the first prefabricated sheet is provided with a tenon; the second prefabricated sheet is connected with the first prefabricated sheet, and one end, facing the first prefabricated sheet, of the second prefabricated sheet is provided with a mortise; wherein, the tenon is in inserting fit with the mortise so as to be convenient for positioning when the first prefabricated sheet is connected with the second prefabricated sheet. Use the technical scheme of the utility model, can solve the not good problem of joint strength between the prefabricated piece of inverted arch structure among the prior art.
Description
Technical Field
The utility model relates to a tunnel engineering technical field particularly, relates to a prefabricated section coupling assembling and have its inverted arch structure.
Background
When basic projects such as roads and railways are built, tunnels are often required to be excavated.
The inverted arch is a reverse arch structure arranged at the bottom of the tunnel for improving the stress condition of an upper supporting structure, is one of main components of the tunnel structure, and is used for effectively transmitting the pressure of the stratum at the upper part of the tunnel to the ground through a side wall structure of the tunnel or the load on the road surface and also effectively resisting the counter force transmitted from the stratum at the lower part of the tunnel. The inverted arch and the secondary lining form a whole tunnel, so that the structural stability is improved.
Since the inverted arch is one of the main components of the tunnel structure, it is the foundation of the tunnel structure. On one hand, the pressure of the stratum at the upper part of the tunnel is effectively transmitted to the underground through a side wall structure of the tunnel or the load on the road surface, and the counter force transmitted from the stratum at the lower part of the tunnel is effectively resisted. It is in fact a foundation beam (slab) that can withstand both the permanent loads of the ground and the temporary loads (dynamic loads) of the road. Therefore, the stress state of the inverted arch is relatively complex.
At present, tunnels are excavated by adopting a drilling and blasting method, most inverted arches are constructed by adopting a cast-in-place method, the construction method is greatly influenced by the field environment, and the strength and the quality of inverted arch structures are poor. In order to solve the problems, an assembly mode is adopted in the prior art, the inverted arch duct piece is prefabricated in a factory in a prefabricating field, the quality of concrete is easy to control, and mechanical hoisting is adopted after the inverted arch duct piece is transported to the site. However, how to ensure the connection structure and strength between the prefabricated pieces in this way does not have a good solution at present.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide an inverted arch structure and a connecting assembly thereof for connecting prefabricated pieces of inverted arch structure in the prior art.
In order to achieve the above object, according to an aspect of the present invention, there is provided a prefabricated section connecting assembly for connecting two adjacent inverted arch prefabricated sections, the prefabricated section connecting assembly comprising: the first prefabricated sheet is provided with a tenon; the second prefabricated sheet is connected with the first prefabricated sheet, and one end, facing the first prefabricated sheet, of the second prefabricated sheet is provided with a mortise; wherein, the tenon is in inserting fit with the mortise so as to be convenient for positioning when the first prefabricated sheet is connected with the second prefabricated sheet.
Further, the tenon and the first prefabricated sheet are of an integrally formed structure.
Further, still be equipped with the retaining member between first prefabricated piece and the second prefabricated piece, the retaining member is used for connecting first prefabricated piece and second prefabricated piece locking.
Further, the locking member is a bolt.
Furthermore, the locking piece further comprises a nut matched with the bolt, and a water stop gasket is arranged at one end, close to the nut, of the bolt.
Furthermore, a gap is formed between the first prefabricated sheet and the second prefabricated sheet, and a sealing gasket is arranged at the gap.
Furthermore, the sealing gasket is an ethylene propylene diene monomer rubber sealing gasket.
Furthermore, a water stop strip is arranged at the gap.
Further, prefabricated section coupling assembling includes a plurality of sealed pads, and a plurality of sealed pads are located the both sides of tenon respectively, and the sealing rod setting is in the one side of sealed pad keeping away from the tenon.
According to the utility model discloses an on the other hand provides an inverted arch structure, including a plurality of prefabricated section coupling assembling, prefabricated section coupling assembling is foretell prefabricated section coupling assembling.
Use the technical scheme of the utility model, adopt tenon and tongue-and-groove grafting complex mode to connect between first prefabricated piece and the second prefabricated piece to be convenient for the hookup location between first prefabricated piece and the second prefabricated piece, and seam crossing is impassable, makes joint strength between first prefabricated piece and the second prefabricated piece higher. For the plain end connected mode of prefabricated section among the prior art, the connected mode of this embodiment has guaranteed the joint strength between first prefabricated section and the second prefabricated section, and then has improved prefabricated section coupling assembling's structural strength, has guaranteed that the intensity of whole inverted arch structure satisfies technical requirement.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of an inverted arch structure according to the invention;
FIG. 2 shows an exploded view of the preform sheet connection assembly of the inverted arch structure of FIG. 1; and
fig. 3 shows a schematic view of the connection of the prefabricated sheet connection assembly of the inverted arch structure of fig. 1 (wherein the gasket and the water stop strip are shown).
Wherein the figures include the following reference numerals:
10. a first preform sheet; 11. a tenon; 20. a second preform sheet; 21. mortises; 30. a locking member; 40. a gasket; 50. a water stop strip.
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 accompanying drawings in conjunction with embodiments.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 2 and 3, the present embodiment provides a preform sheet connecting assembly for connecting two adjacent inverted arch preform sheets. The precast slab connecting assembly of the embodiment comprises a first precast slab 10 and a second precast slab 20, wherein a tenon 11 is arranged on the first precast slab 10; a tongue-and-groove 21 is arranged at one end of the second prefabricated section 20 facing the first prefabricated section 10, and is connected with the first prefabricated section 10; the tenon 11 is inserted and matched with the mortise 21 so as to facilitate the positioning when the first prefabricated section 10 is connected with the second prefabricated section 20.
In this embodiment, the first prefabricated section 10 and the second prefabricated section 20 are connected by inserting and fitting the tenon 11 and the mortise 21, so as to facilitate the connection and positioning between the first prefabricated section 10 and the second prefabricated section 20, and the joint is not through, so that the connection strength between the first prefabricated section 10 and the second prefabricated section 20 is high. For the plain end connected mode of prefabricated section among the prior art, the joint strength between first prefabricated section 10 and the second prefabricated section 20 has been guaranteed to the connected mode of this embodiment, and then has improved the structural strength of prefabricated section coupling assembling, has guaranteed that the intensity of whole inverted arch structure satisfies technical requirement.
Preferably, in the present embodiment, the tenon 11 and the first preform sheet 10 are of an integrally formed structure.
The overall structural strength of the first precast segment 10 is ensured by the arrangement, and the tenon 11 and the first precast segment 10 are integrally cast, so that the strength of the first precast segment 10 after being connected with the second precast segment 20 is ensured.
In this embodiment, a locking member 30 is provided between the first preform piece 10 and the second preform piece 20, as shown in fig. 1, and the locking member 30 is used to lock the first preform piece 10 and the second preform piece 20 together.
Specifically, after the first preform piece 10 and the second preform piece 20 are inserted together, the two adjacent preform pieces are firmly connected by the locking member 30 to further ensure the connection strength of the preform piece assembly.
Preferably, in the present embodiment, the locker 30 is a bolt.
The locking member 30 in this embodiment is a galvanized bent bolt of 8.8 grade (one of the bolt performance grades, belonging to a high strength bolt) to adapt to the connection structure between the first prefabricated section 10 and the second prefabricated section 20, and ensure that the connection strength meets the requirements of the prefabricated section assembly.
Further, in this embodiment, the locking member 30 further includes a nut engaged with the bolt, and a water stop gasket is disposed at an end of the bolt close to the nut.
Through the setting, when the seam crossing met water, the stagnant water gasket that is close to nut one end met water inflation, can prevent effectively that moisture from getting into the seam, played good waterproof effect, and then prevented to intake because of the seam and influence the structural strength of prefabricated piece subassembly.
As shown in fig. 3, in this embodiment, a gap is provided between the first preform sheet 10 and the second preform sheet 20, and a gasket 40 is provided at the gap.
Preferably, the gasket 40 is disposed on one side close to the substrate, and when hydrogeological conditions are complicated, two gaskets 40 may be disposed to effectively seal the gap between the first preform sheet 10 and the second preform sheet 20 to prevent water from entering the gap.
Preferably, the gasket 40 is an ethylene propylene diene monomer gasket.
Because the ethylene propylene diene monomer rubber has good aging resistance and corrosion resistance, the ethylene propylene diene monomer rubber can play a good sealing role when being applied to gaps of the prefabricated plate component.
In this embodiment, as shown in fig. 3, a water stop strip 50 is further provided at the gap.
Through the above setting, the water stop strip 50 can effectively prevent that external environment's moisture from getting into by the gap, avoids intaking because of the gap and leads to the intensity reduction of prefabricated section subassembly, influences inverted arch structure's intensity and life.
As shown in fig. 3, in the present embodiment, the prefabricated section connecting assembly includes a plurality of sealing gaskets 40, the plurality of sealing gaskets 40 are respectively located at two sides of the tenon 11, and the water stop strip 50 is arranged at one side of the sealing gasket 40 far away from the tenon 11.
Specifically, the water stop strip 50 is positioned relative to the gasket 40 in a gap adjacent the side edge of the preform sheet. Through the arrangement, the water stop strip 50 forms a first defense line of the prefabricated sheet assembly, and water is effectively prevented from entering a gap; the sealing pad 40 forms a second gap of the prefabricated section assembly, so that small molecule particles and impurities are effectively prevented from entering, and the connection strength between the first prefabricated section 10 and the second prefabricated section 20 is ensured.
The embodiment of the utility model provides an invert structure is still provided, including a plurality of prefabricated section coupling assembling, prefabricated section coupling assembling is foretell prefabricated section coupling assembling.
In this embodiment, the first prefabricated section 10 and the second prefabricated section 20 are connected by inserting and fitting the tenon 11 and the mortise 21, so as to facilitate the connection and positioning between the first prefabricated section 10 and the second prefabricated section 20, and the joint is not through, so that the connection strength between the first prefabricated section 10 and the second prefabricated section 20 is high. For the plain end connected mode of prefabricated section among the prior art, the joint strength between first prefabricated section 10 and the second prefabricated section 20 has been guaranteed to the connected mode of this embodiment, and then has improved the structural strength of prefabricated section coupling assembling, has guaranteed that the intensity of whole inverted arch structure satisfies technical requirement.
Thus, an inverted arch structure having the preform sheet connection assembly described above also has the advantages described above.
As shown in fig. 2, the joint form of the first precast segment 10 and the second precast segment 20 in the present embodiment is referred to as a subway pipe segment joint form, which is also called a single tongue-and-groove joint, and in the inverted arch structure of the present embodiment, a single tongue-and-groove joint is used for both the circular seam and the longitudinal seam. The middle tenon is 11 cm and 11 cm in width, two adjacent prefabricated pieces are connected through 8.8-level galvanized bent bolts, and the nut end is provided with the water-swelling water-stopping gasket.
In general, an ethylene propylene diene monomer rubber gasket and a water-swelling water stop strip are arranged on the base side of the gap of the prefabricated sheet connecting assembly. When the inverted arch structure is complex in lateral hydrogeological conditions, two ethylene propylene diene monomer rubber sealing gaskets and one water stop strip which expands when encountering water are arranged at the gap of the prefabricated sheet connecting assembly.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
adopt tenon and tongue-and-groove grafting complex mode to connect between first prefabricated piece and the second prefabricated piece to be convenient for the connection location between first prefabricated piece and the second prefabricated piece, and seam crossing is impassable, makes joint strength between first prefabricated piece and the second prefabricated piece higher. For the plain end connected mode of prefabricated section among the prior art, the connected mode of this embodiment has guaranteed the joint strength between first prefabricated section and the second prefabricated section, and then has improved prefabricated section coupling assembling's structural strength, has guaranteed that the intensity of whole inverted arch structure satisfies technical requirement.
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.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
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 oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
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 (7)
1. A preform sheet connection assembly for connecting two adjacent inverted arch preform sheets, the preform sheet connection assembly comprising:
the first precast sheet (10), wherein a tenon (11) is arranged on the first precast sheet (10);
the second precast sheet (20) is connected with the first precast sheet (10), and one end, facing the first precast sheet (10), of the second precast sheet (20) is provided with a mortise (21);
wherein the tenon (11) is matched with the mortise (21) in an inserting manner so as to facilitate the positioning when the first precast sheet (10) is connected with the second precast sheet (20);
first prefabricated section (10) with still be equipped with retaining member (30) between second prefabricated section (20), retaining member (30) be used for with first prefabricated section (10) with second prefabricated section (20) locking connection, retaining member (30) are the bolt, retaining member (30) still include with bolt complex nut, be close to of bolt the one end of nut is equipped with the stagnant water gasket.
2. A preform sheet connection assembly according to claim 1, wherein the tenon (11) and the first preform sheet (10) are of one-piece formed construction.
3. A preform coupling assembly according to any one of claims 1-2, wherein the first preform sheet (10) and the second preform sheet (20) have a gap therebetween, the gap being provided with a sealing gasket (40).
4. A pre-segment connection assembly according to claim 3, wherein the gasket (40) is an ethylene propylene diene monomer rubber gasket.
5. A preform sheet connection assembly according to claim 3, wherein a water stop strip (50) is further provided at the slit.
6. A pre-segment connection assembly according to claim 5, comprising a plurality of the sealing pads (40), the sealing pads (40) being located on either side of the tenon (11), the water stop strip (50) being provided on the side of the sealing pad (40) remote from the tenon (11).
7. An inverted arch structure comprising a plurality of preform connecting assemblies, wherein the preform connecting assemblies are as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270206.2U CN209818077U (en) | 2018-12-30 | 2018-12-30 | Prefabricated section coupling assembling and have its inverted arch structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270206.2U CN209818077U (en) | 2018-12-30 | 2018-12-30 | Prefabricated section coupling assembling and have its inverted arch structure |
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| CN209818077U true CN209818077U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458192A (en) * | 2018-12-30 | 2019-03-12 | 中铁十四局集团有限公司 | Prefabricated film connection component and inverted arch structure with it |
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2018
- 2018-12-30 CN CN201822270206.2U patent/CN209818077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458192A (en) * | 2018-12-30 | 2019-03-12 | 中铁十四局集团有限公司 | Prefabricated film connection component and inverted arch structure with it |
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