CN211368802U - Prefabricated waterproof construction of open cut tunnel movement joint - Google Patents
Prefabricated waterproof construction of open cut tunnel movement joint Download PDFInfo
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- CN211368802U CN211368802U CN201921409807.5U CN201921409807U CN211368802U CN 211368802 U CN211368802 U CN 211368802U CN 201921409807 U CN201921409807 U CN 201921409807U CN 211368802 U CN211368802 U CN 211368802U
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Abstract
The utility model belongs to the technical field of the tunnel is waterproof, specifically provide a prefabricated waterproof construction of open cut tunnel movement joint, correspond fixed first elastic sealing element and second elastic sealing element on first steel base and second steel base respectively, pass through connecting bolt with first steel base and second steel base and connect formation waterproof construction body, the deformation gap in the middle of the extrusion is in order to fill waterproof construction body between first elastic sealing element and the second elastic sealing element, concrete can be pour the both sides of waterproof construction body at last and the waterproof construction in the tunnel can be accomplished. The waterproof structure can avoid welding of waterproof rubber, and effectively avoids adding a waterproof weak link in the construction process of the waterproof structure at the deformation joint of the tunnel, so that the waterproof material of the structure is prevented from being weakened by the connecting joint of the waterproof material, and the integral waterproof performance of the structure is ensured; improve current movement joint waterproof construction, avoid the vibration in the work progress to lead to waterproof inefficacy.
Description
Technical Field
The utility model belongs to the technical field of the tunnel is waterproof, concretely relates to open cut tunnel movement joint prefabricated waterproof construction.
Background
The tunnel is a structural form with a great slenderness ratio, and due to the change of geology and foundation properties, the deformation of the tunnel structure foundation can be different even under the same structure and earthing effect. When the conditions of severe geological change, sudden structural shape change and the like exist, the uneven settlement of the foundation is more obvious, the damage to the structure is larger, and deformation joints are required to be arranged at certain intervals in order to adapt to structural deformation.
The deformation joint is in a discontinuous state, and for a tunnel structure buried underground, an obvious water seepage channel is formed, so that a waterproof structure capable of adapting to certain deformation is required to be arranged at the deformation joint in the design, and a steel-edge rubber water stop is most commonly used. The two sides of the existing water stop belt are steel wing plates, the middle of the existing water stop belt is made of rubber, the steel wing plates are fixed on the two sides of the deformation joint when the water stop belt is used, the middle water stop belt made of rubber can adapt to the difference deformation of structures on the two sides of the deformation joint to a certain extent, and the waterproof capacity is guaranteed.
However, the waterproof solution at the deformation joint still has the following problems:
1) for a whole ring of the steel-edged rubber water stop, welding or hot vulcanization connection is needed when the ring is closed. For a tunnel structure with a large cross section profile, such as a bidirectional six-lane or eight-lane tunnel, the peripheral profile of the tunnel exceeds 100m, and a plurality of steel-edge rubber water stop joints may exist. The waterproof capability of the water stop belt at the joint is difficult to guarantee, and once the water stop belt is broken or fractured, the whole tunnel waterproof system fails.
2) Because the middle of the steel edge rubber water stop is made of flexible materials, when pouring is carried out, the steel edge on one side needs to be poured on one side of the deformation joint, and after the other side is fixed by adopting a steel bar clamp or other measures, concrete is poured. During the concrete casting, the vibrating action may cause the flashing to move, become misaligned or even fall out, and the flashing may fail as a result.
Disclosure of Invention
The utility model aims at overcoming the weakening problem of waterproof material connecting seam to the waterproof material of structure among the prior art.
Therefore, the utility model provides a prefabricated waterproof structure for deformation joints of open cut tunnels, which comprises a first concrete structure and a second concrete structure, the first concrete structure and the second concrete structure are spliced to form a deformation gap, and the device also comprises a first elastic sealing element and a second elastic sealing element, a first steel base is arranged on one side of the first concrete structure close to the deformation gap, a second steel base corresponding to the first steel base is arranged on one side of the second concrete structure close to the deformation gap, the first elastic sealing element is connected with the first steel base through a first compression bolt, the second elastic sealing element is connected with the second steel base through a second compression bolt, the first steel base and the second steel base are connected through a connecting bolt, and the first elastic sealing element and the second elastic sealing element are extruded and filled in the deformation gap.
Preferably, the first elastic sealing elements and the second elastic sealing elements are arranged in a one-to-one correspondence along the extending direction of the deformation gap.
Preferably, the first and second elastic sealing members are first and second compressible rubber water stops, respectively.
Preferably, the first compressible rubber waterstop edge and the second compressible rubber waterstop edge are provided with through holes, the first compression bolt penetrates through the through hole of the first compressible rubber waterstop and is fixedly connected with the first steel base, and the second compression bolt penetrates through the through hole of the second compressible rubber waterstop and is fixedly connected with the second steel base.
Preferably, the first compressible rubber water stop is bonded with the first steel base through a neoprene-phenolic adhesive, and the second compressible rubber water stop is bonded with the second steel base through a neoprene-phenolic adhesive.
Preferably, the end of the first steel base and the end of the second steel base are welded and connected through a joint connecting steel plate.
Preferably, the first steel base and the second steel base are a first steel U-shaped piece and a second steel U-shaped piece respectively, the first elastic sealing element is connected with a web of the first steel U-shaped piece, and the second elastic sealing element is connected with a web of the second steel U-shaped piece.
Preferably, the waterproof structure further includes a first elastic sealing member fixing pressing piece and a second elastic sealing member fixing pressing piece, the first pressing bolt penetrates through the first elastic sealing member fixing pressing piece and is fixed on the first steel base, the first elastic sealing member fixing pressing piece presses the first elastic sealing member on the first steel base, the second pressing bolt penetrates through the second elastic sealing member fixing pressing piece and is fixed on the second steel base, and the second elastic sealing member fixing pressing piece presses the second elastic sealing member on the second steel base.
The utility model has the advantages that: the utility model provides a prefabricated waterproof construction of this kind of open cut tunnel movement joint corresponds fixed first elastic sealing element and second elastic sealing element on first steel base and second steel base respectively, passes through connecting bolt with first steel base and second steel base and connects formation waterproof construction body, extrudees in order to fill the deformation gap in the middle of the waterproof construction body between first elastic sealing element and the second elastic sealing element, concreting can accomplish the waterproof construction in the tunnel with the both sides of waterproof construction body at last. The waterproof structure can avoid welding of waterproof rubber, and effectively avoids adding a waterproof weak link in the construction process of the waterproof structure at the deformation joint of the tunnel, so that the waterproof material of the structure is prevented from being weakened by the connecting joint of the waterproof material, and the integral waterproof performance of the structure is ensured; improve current movement joint waterproof construction, avoid the vibration in the work progress to lead to waterproof inefficacy. The installation is simple and convenient, the construction speed can be accelerated, and the waterproof construction quality is easy to ensure; can be flexibly changed according to the section form, and has wide applicability.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of the prefabricated waterproof structure for deformation joints of open cut tunnels of the present invention;
FIG. 2 is a schematic structural diagram of a first steel base before installation of the prefabricated waterproof structure for deformation joints of open cut tunnels of the utility model;
fig. 3 is the utility model discloses open cut tunnel movement joint prefabricated waterproof construction's other elastic sealing element's installation structure chart.
Description of reference numerals: the concrete sealing device comprises a first steel base 1, a first compression bolt 2, a first elastic sealing element 3, a second steel base 4, a second compression bolt 5, a second elastic sealing element 6, a connecting bolt 7, an anchoring steel bar 8, a joint connecting steel plate 9, a deformation gap 10, a first concrete structure 11, a second concrete structure 12, a first elastic sealing element fixing pressing sheet 13 and a rubber block 14.
Detailed Description
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. 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.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 2, the present invention provides an open cut tunnel deformation joint prefabricated waterproof structure, which comprises a first concrete structure 11 and a second concrete structure 12, wherein a deformation gap 10 is formed between the first concrete structure 11 and the second concrete structure 12 by splicing, a first elastic sealing member 3 and a second elastic sealing member 6 are further included, a first steel base 1 is disposed on one side of the first concrete structure 11 close to the deformation gap 10, a second steel base 4 corresponding to the first steel base 1 is disposed on one side of the second concrete structure 12 close to the deformation gap 10, the first elastic sealing member 3 is connected with the first steel base 1 by a first compression bolt 2, the second elastic sealing member 6 is connected with the second steel base 4 by a second compression bolt 5, the first steel base 1 is connected with the second steel base 4 by a connecting bolt 7, the first elastic sealing element 3 and the second elastic sealing element 6 are squeezed and filled in the deformation gap 10. Install elastic sealing element on the steel base that corresponds earlier before the installation, then aim at the elastic sealing element on two steel bases, screw up connecting bolt 7 for first elastic sealing element 3 fills deformation gap 10 with second elastic sealing element 6 extrusion deformation, and the water that flows into in deformation gap 10 from the top just can not continue to permeate down like this, and water can flow out from the both ends in gap along elastic sealing element, thereby plays sealed effect. Specifically, after the two elastic sealing elements are compressed by applying pretightening force, the joint connecting bolts 7 are arranged between the two steel bases at intervals and screwed tightly so as to maintain the pretightening force between the waterproof structures, and the joint connecting steel plates 9 are used for welding firmly close to the inner side edges of the structures, so that the overall rigidity of the structures is improved, and the waterproof structures are ensured not to deform in the construction process. When the deformation joint of the open-cut tunnel is constructed, the waterproof structure is hoisted in place through the hoisting equipment, then the template and the steel bars are erected, the waterproof structure can be fixed on the steel bar framework at the moment, the connector connecting steel plate 9 is taken down, and finally the first concrete structure 11 and the second concrete structure 12 on two sides of the deformation joint are poured, so that the waterproof structure and the concrete structures on two sides of the deformation joint form a whole.
Wherein, can all add the gasket between the connecting piece and realize better connection and prevent becoming flexible. For example, a gasket may be provided at the joint between the connecting bolt 7 and the steel base.
Preferably, the first elastic sealing members 3 and the second elastic sealing members 6 are arranged in a one-to-one correspondence along the extending direction of the deformation gap 10. It can be seen that a plurality of elastic sealing members are arranged in the deformation gap 10 from top to bottom, thereby achieving a multi-layer permeation-proof effect and further improving the sealing performance.
Preferably, the first elastic sealing element 3 and the second elastic sealing element 6 are both compressible rubber water stops, the first compressible rubber water stop is bonded with the first steel base 1 through a neoprene-phenolic adhesive, and the second compressible rubber water stop is bonded with the second steel base 4 through a neoprene-phenolic adhesive. Therefore, the water stop gasket is bonded with the steel substrate through the cold vulcanization bonding glue to ensure that the water stop gasket and the steel substrate are not leaked.
Preferably, through holes are formed in the edge of the first compressible rubber water stop and the edge of the second compressible rubber water stop, the first compression bolt penetrates through the through hole of the first compressible rubber water stop and is fixedly connected with the first steel base 1, and the second compression bolt penetrates through the through hole of the second compressible rubber water stop and is fixedly connected with the second steel base 4. When the special-shaped water stop belt is produced, lugs on the edges can be designed, through holes are drilled in the lugs, and bolts penetrate through the through holes to be connected with the steel base.
Preferably, the end of the first steel base 1 and the end of the second steel base 4 are welded and connected by a joint connection steel plate 9. Set up joint connecting bolt 7 and screw up at every fixed interval between two steel bases to maintain the pretightning force between the waterproof construction, and be close to the inboard edge of structure, it is firm to weld with joint connection steel sheet 9, improves structure rigidity as a whole, guarantees that waterproof construction does not warp in the work progress. Specifically, when the deformation gap 10 of the open-cut tunnel is constructed, the waterproof structure is hoisted in place through the hoisting equipment, then the template and the steel bars are erected, the waterproof structure can be fixed on the steel bar framework at the moment, the connector connecting steel plate 9 is taken down, and finally concrete structures on two sides of the deformation gap are poured, so that the waterproof structure and the concrete structures on two sides of the deformation gap form a whole.
Preferably, the first steel base 1 and the second steel base 4 are a first steel U-shaped member and a second steel U-shaped member, respectively, the first elastic sealing member 3 is connected to a web of the first steel U-shaped member, and the second elastic sealing member 6 is connected to a web of the second steel U-shaped member. Therefore, the two ends of the U-shaped part can be fixed when the concrete is cast in place, and the U-shaped part can be more firmly fixed with the cast-in-place concrete. Furthermore, a plurality of anchoring steel bars 8 can be welded on the first steel base 1 and the second steel base 4 respectively, and the anchoring steel bars 8 and cast-in-place concrete are integrated during casting, so that the cast-in-place structure is reinforced, and the steel bases and the concrete are connected more firmly.
Preferably, the waterproof structure further includes a first elastic sealing member fixing pressing piece 13 and a second elastic sealing member fixing pressing piece, the first pressing bolt 2 penetrates through the first elastic sealing member fixing pressing piece 13 and is fixed on the first steel base 1, the first elastic sealing member fixing pressing piece 13 presses the first elastic sealing member 3 on the first steel base 1, the second pressing bolt 5 penetrates through the second elastic sealing member fixing pressing piece and is fixed on the second steel base 4, and the second elastic sealing member fixing pressing piece presses the second elastic sealing member 6 on the second steel base 4. Therefore, the fixing pressing sheet is larger than the pressing area of the pressing bolt, the elastic piece can be pressed on the steel base in a larger area through the pressing sheet, and the elastic sealing piece is more easily pressed on the steel base when the pressing area is larger. The fixed pressing sheet penetrates through the edge of the water stop belt and tightly presses the water stop belt to prevent the water stop belt from sliding out, so that the water stop belt is more firmly connected with the steel base.
Preferably, the first compression bolt 2 comprises an upper compression bolt and a lower compression bolt, the fixed pressing sheet of the first elastic sealing element 3 comprises an upper pressing sheet and a lower pressing sheet, the upper compression bolt penetrates through the upper pressing sheet, the upper pressing sheet is pressed against the upper edge of the end part of the water stop, the lower compression bolt penetrates through the lower pressing sheet, and the lower pressing sheet is pressed against the lower edge of the end part of the water stop. Therefore, the upper and lower pressing pieces press the edges of the upper and lower end portions of the elastic sealing member, and further press the elastic sealing member.
The resilient sealing member may also be a filler member of other forms or materials, such as a rubber block 14, as shown in fig. 3. The two rubber blocks are extruded together to achieve the sealing effect.
The utility model also provides a method of the prefabricated waterproof construction of open cut tunnel movement joint, include:
s01: a first elastic sealing element 3 and a second elastic sealing element 6 are respectively and correspondingly fixed on the first steel base 1 and the second steel base 4;
s02: connecting a first steel base 1 and a second steel base 4 through a connecting bolt 7 to form a waterproof structure body, and extruding between a first elastic sealing element 3 and a second elastic sealing element 6 to fill a deformation gap 10 in the middle of the waterproof structure body;
s03: and concrete is poured on two sides of the waterproof structure body.
As shown in fig. 1 to 2, the specific operation steps are as follows: the U-shaped steel base is formed by welding channel steel or steel plates, two compressible rubber water stops are installed on the steel base along the vertical direction, the compressible rubber water stops are bonded to the steel base through reliable bonding materials, and water seepage of the contact surface of the compressible rubber water stops and the steel base is avoided. The compressible rubber waterstop is fixed on the steel base by using a waterstop fixing bolt and a waterstop fixing pressing sheet at certain intervals, so that the position stability of the compressible rubber waterstop is ensured. A plurality of anchoring steel bars 8 can be welded on the steel base in advance according to the design requirement and are anchored with the concrete structure when the concrete is poured in the later period.
Before the use, with two waterproof construction butt joints concatenation, compress tightly the back with compressible rubber waterstop through applying the pretightning force, set up joint connection bolt 7 at every certain interval between two steel bases and screw up to maintain the pretightning force between the waterproof construction, and be close to the inboard edge of structure, it is firm with the welding of joint connection steel sheet 9, improve structure rigidity as a whole, guarantee that waterproof construction is indeformable in the work progress.
When the deformation joint of the open-cut tunnel is constructed, the waterproof structure is hoisted in place through the hoisting equipment, then the template and the steel bars are erected, the waterproof structure can be fixed on the steel bar framework at the moment, the connector connecting steel plate 9 is taken down, and finally the first concrete structure 11 and the second concrete structure 12 on two sides of the deformation joint are poured, so that the waterproof structure and the concrete structures on two sides of the deformation joint form a whole.
The utility model discloses also can adopt similar waterproof materials such as the waterproof elastic sealing pad of similar shield tunnel, apply the pretightning force through the extrusion and realize waterproof function.
The utility model has the advantages that: the utility model provides a prefabricated waterproof construction of this kind of open cut tunnel movement joint corresponds fixed first elastic sealing element and second elastic sealing element on first steel base and second steel base respectively, passes through connecting bolt with first steel base and second steel base and connects formation waterproof construction body, extrudees in order to fill the deformation gap in the middle of the waterproof construction body between first elastic sealing element and the second elastic sealing element, concreting can accomplish the waterproof construction in the tunnel with the both sides of waterproof construction body at last. The waterproof structure can avoid welding of waterproof rubber, and effectively avoids adding a waterproof weak link in the construction process of the waterproof structure at the deformation joint of the tunnel, so that the waterproof material of the structure is prevented from being weakened by the connecting joint of the waterproof material, and the integral waterproof performance of the structure is ensured; improve current movement joint waterproof construction, avoid the vibration in the work progress to lead to waterproof inefficacy. The installation is simple and convenient, the construction speed can be accelerated, and the waterproof construction quality is easy to ensure; can be flexibly changed according to the section form, and has wide applicability.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides a prefabricated waterproof construction of open cut tunnel movement joint, includes first concrete structure and second concrete structure, the concatenation forms the movement joint between first concrete structure and the second concrete structure, its characterized in that: the concrete sealing structure is characterized by further comprising a first elastic sealing element and a second elastic sealing element, a first steel base is arranged on one side, close to the deformation gap, of the first concrete structure, a second steel base corresponding to the first steel base is arranged on one side, close to the deformation gap, of the second concrete structure, the first elastic sealing element is connected with the first steel base through a first compression bolt, the second elastic sealing element is connected with the second steel base through a second compression bolt, the first steel base is connected with the second steel base through a connecting bolt, and the first elastic sealing element and the second elastic sealing element are filled in the deformation gap in an extruding mode.
2. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 1, wherein: the plurality of first elastic sealing elements and the plurality of second elastic sealing elements are arranged in a one-to-one correspondence mode along the extending direction of the deformation gap.
3. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 1, wherein: the first elastic sealing element and the second elastic sealing element are respectively a first compressible rubber water stop and a second compressible rubber water stop.
4. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 3, wherein: the first compressible rubber waterstop edge and the second compressible rubber waterstop edge are provided with through holes, the first compression bolt penetrates through the through hole of the first compressible rubber waterstop and is fixedly connected with the first steel base, and the second compression bolt penetrates through the through hole of the second compressible rubber waterstop and is fixedly connected with the second steel base.
5. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 3, wherein: the first compressible rubber water stop is bonded with the first steel base through a chloroprene-phenolic adhesive, and the second compressible rubber water stop is bonded with the second steel base through a chloroprene-phenolic adhesive.
6. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 1, wherein: the tail end of the first steel base and the tail end of the second steel base are connected through a connector connecting steel plate in a welding mode.
7. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 1, wherein: the first steel base and the second steel base are respectively a first steel U-shaped piece and a second steel U-shaped piece, the first elastic sealing piece is connected with the belly of the first steel U-shaped piece, and the second elastic sealing piece is connected with the belly of the second steel U-shaped piece.
8. The open-cut tunnel deformation joint prefabricated waterproof structure of claim 1, wherein: the waterproof structure further comprises a first elastic sealing element fixing pressing sheet and a second elastic sealing element fixing pressing sheet, the first pressing bolt penetrates through the first elastic sealing element fixing pressing sheet and is fixed on the first steel base, the first elastic sealing element fixing pressing sheet presses the first elastic sealing element on the first steel base, the second pressing bolt penetrates through the second elastic sealing element fixing pressing sheet and is fixed on the second steel base, and the second elastic sealing element fixing pressing sheet presses the second elastic sealing element on the second steel base.
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| CN201921409807.5U CN211368802U (en) | 2019-08-28 | 2019-08-28 | Prefabricated waterproof construction of open cut tunnel movement joint |
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| CN201921409807.5U CN211368802U (en) | 2019-08-28 | 2019-08-28 | Prefabricated waterproof construction of open cut tunnel movement joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439037A (en) * | 2019-08-28 | 2019-11-12 | 中铁第四勘察设计院集团有限公司 | A kind of prefabricated waterproof construction of open trench tunnel deformation joint and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439037A (en) * | 2019-08-28 | 2019-11-12 | 中铁第四勘察设计院集团有限公司 | A kind of prefabricated waterproof construction of open trench tunnel deformation joint and method |
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