CN214941155U - New and old concrete interface waterproof structure of pre-buried distributed slip casting pipe - Google Patents
New and old concrete interface waterproof structure of pre-buried distributed slip casting pipe Download PDFInfo
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- CN214941155U CN214941155U CN202121172963.1U CN202121172963U CN214941155U CN 214941155 U CN214941155 U CN 214941155U CN 202121172963 U CN202121172963 U CN 202121172963U CN 214941155 U CN214941155 U CN 214941155U
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Abstract
The utility model discloses a waterproof structure in new and old concrete interface of pre-buried distributing type slip casting pipe, include: the connecting assembly is arranged in the new concrete layer and connects the new concrete layer with the old concrete; the grouting assembly is arranged in the new concrete layer and positioned at the joint of the new concrete layer and the old concrete layer, the grouting assembly is used for inducing temperature cracks and settlement cracks of the building structure, local stress concentration of the joint surface can be caused by the existence of the grouting assembly, the local stress concentration becomes a weak point of the joint surface and further becomes an induction source for generating cracks, the cracks of the new concrete layer are generated in the grouting assembly in a concentrated manner, and the grouting assembly is also used for grouting and repairing the cracks; the stagnant water layer, the stagnant water layer sets up in the new concrete layer and is located slip casting subassembly department, and the stagnant water layer is used for adsorbing the inflation with the junction seal of new concrete layer and old concrete layer to the water that the new concrete layer that the slip casting subassembly poured into carries into, has the waterproof ability that improves new and old concrete interface department.
Description
Technical Field
The utility model relates to a concrete construction waterproof construction's technical field, in particular to, relate to a new and old concrete interface waterproof construction of pre-buried distributing type slip casting pipe.
Background
When a new building is expanded based on an old building, an interface transition area exists between the new and old concrete. The exposed part of the old concrete is different from the affinity of the new concrete aggregate, and the influence of factors such as shrinkage deformation of newly poured concrete, new building foundation settlement and the like causes cracks to be easily generated at the joint surface of the new concrete and the old concrete, thereby causing the problem of water leakage.
When the common embedded water stop steel plate is used for water prevention, if the water stop steel plate is not embedded in an old building, the embedded water stop steel plate needs to be manually grooved again, and the field workload can be obviously increased; when the rubber expansion water stop strip is adopted to improve the connection waterproof performance, the field workload is relatively reduced, but cracks formed at the interface of new and old concrete exist all the time, and the corrosion of the reinforcing steel bars and the degradation of the concrete performance are accelerated by the water and air, so that the waterproof performance and the durability of the structure are obviously influenced; therefore, it is necessary to control and repair cracks on the joint surface and improve the waterproof capability at the interface between the new and old concrete.
The utility model provides a not enough to prior art, the utility model provides a waterproof structure of new and old concrete interface of pre-buried distributing type slip casting pipe to improve the waterproof ability of new and old concrete interface department.
SUMMERY OF THE UTILITY MODEL
The utility model provides a new and old concrete interface waterproof construction of pre-buried distributing type slip casting pipe to solve the not enough technical problem of current new and old concrete structure joint interface department waterproof performance.
According to the utility model discloses an aspect provides a new and old concrete interface waterproof construction of pre-buried distributed slip casting pipe, including new concrete layer, new concrete layer laminating the terminal surface on old concrete layer still includes:
the connecting assembly is arranged in the new concrete layer and connects the new concrete layer and the old concrete layer;
the grouting component is arranged in the new concrete layer and positioned at the joint of the new concrete layer and the old concrete layer, is used for inducing temperature cracks and settlement cracks of the building structure, can cause local stress concentration of the joint face due to the existence of the grouting component, becomes a weak point of the joint face and further becomes an induction source for generating cracks, and is also used for grouting and repairing the cracks generated by the new concrete layer;
and the water stopping layer is arranged in the new concrete layer and is positioned at the grouting assembly, and the water stopping layer is used for adsorbing and expanding water brought by the new concrete grout injected by the grouting assembly to seal the joint of the new concrete layer and the old concrete layer.
By adopting the technical scheme, the connecting assembly is arranged between the new concrete layer and the old concrete layer to stably connect the new concrete layer and the old concrete layer, the grouting assembly is arranged at the joint of the new concrete layer and the old concrete layer to induce temperature cracks and settlement cracks of the building structure, the existence of the grouting assembly can cause local stress concentration on the connecting surface of the new concrete layer and the old concrete layer to become weak points of the connecting surface and further become an initiation source for crack generation, the cracks at the joint of the new concrete layer and the old concrete layer are generated in a concentrated manner at the grouting assembly, the grouting assembly is also used for timely grouting and repairing the cracks generated by the new concrete layer, the water stopping layer is arranged at the peripheral side of the grouting assembly, and concrete grout is adsorbed and the solidification of the concrete grout is accelerated when the grouting assembly is grouted through the water stopping layer, and then the crack is sealed, and the crack generated at the joint of the new concrete layer and the old concrete layer is repaired through the rapid solidification of the waterproof layer and the concrete slurry, so that the waterproof capability of the interface of the new concrete layer and the old concrete layer is improved.
Further, coupling assembling includes the bar planting, the bar planting is worn to establish new concrete layer alternates in old concrete layer, be provided with the adhesive linkage on the bar planting.
Through adopting above-mentioned technical scheme, it will plant the muscle and peg graft in old concrete layer to pass new and old concrete layer through coupling assembling planting the muscle, connect new and old concrete layer with new and old concrete layer fixed connection under the effect of frictional force through planting the muscle for new concrete layer is stable to paste and is leaned on old concrete layer, pegs graft in new and old concrete through planting the muscle, makes the planting muscle play the effect of strengthening rib to new and old concrete, with the slight improvement of new and old concrete.
Furthermore, the adhesive linkage includes the anchor glue film, the anchor glue film set up in on the outer wall of bar planting, be provided with the installation passageway of intercommunication between new concrete layer and the old concrete, the bar planting peg graft in the installation passageway, the anchor glue film with the inner wall bonding of installation passageway will the bar planting is fixed in the installation passageway.
Through adopting above-mentioned technical scheme, through the adhesion of anchor glue film at the outer wall of bar planting, will plant the bar adhesion in the installation passageway, fix bar planting and old and new concrete layer through the anchor glue film on the bar planting outer wall, will plant the bar and stably fix in old and new concrete layer, and connect bar planting and old and new concrete layer through the anchor glue film, convenient operation, the cost of manufacture of anchor glue film is low, practices thrift the cost.
Further, the aperture of the installation channel is 3-8mm larger than the diameter of the embedded bar.
By adopting the technical scheme, the diameter of the installation channel is larger than the diameter of the embedded steel bar by 3-8mm, the diameter is convenient to pass through the installation channel to connect the new concrete layer and the old concrete layer, the situation that the embedded steel bar is difficult to install due to overlarge friction force between the embedded steel bar and the installation channel is avoided, and the embedded steel bar is bonded in the installation channel through the installation channel to bond the embedded steel bar, the new concrete layer and the old concrete layer to fix the embedded steel bar and the old concrete layer so as to facilitate the coating of the anchor glue.
Furthermore, the depth of the embedded steel bars extending into the old concrete is 20-50 cm.
By adopting the technical scheme, the embedded steel bars are inserted into the old concrete by 20-50cm, the contact area between the embedded steel bars and the old concrete layer is increased, the new concrete layer and the old concrete layer are connected into a whole, the friction force between the embedded steel bars and the new and old concrete is increased, and the embedded steel bars are stably connected with the new and old concrete layers.
Further, the slip casting subassembly is including being responsible for and a plurality of branch pipes, be responsible for set up in the new concrete, the branch pipe with be responsible for connect and the butt in the new concrete layer, the tip of branch pipe stretches into the junction on new concrete layer and old concrete layer and is located be responsible for week side.
Through adopting above-mentioned technical scheme, will be responsible for the setting and be close to one side on old concrete layer in new concrete layer, through being responsible for the branch pipe setting on being responsible for, when new concrete layer in situ takes place the crack, through pouring the concrete thick liquid in being responsible for, with the concrete thick liquid along being responsible for transmission to branch pipe department, fill branch pipe and the crack of being responsible for the perisporium with the concrete thick liquid discharge through the branch pipe.
Furthermore, a grouting pipe with a grouting opening is arranged on the main pipe every 8-12m, the grouting opening extends out of the new concrete layer and is arranged, and the grouting opening is communicated with the inner cavity of the main pipe (41) through the grouting pipe.
By adopting the technical scheme, the grouting ports are arranged on the main pipe at intervals of 8-12m, concrete slurry is transmitted to the branch pipe through the grouting ports to be poured, the grouting ports are arranged at intervals of 8-12m, so that the concrete slurry can uniformly enter the main pipe, excessive blockage of the concrete slurry in the main pipe during grouting due to excessive arrangement of the grouting ports is avoided, and the trouble of grouting operation caused by excessive size of the grouting ports is avoided.
Further, the distance between adjacent branch pipes is 0.4-1 m.
By adopting the technical scheme, the distance between the adjacent branch pipes is set to be 0.4-1m, and the branch pipes are spaced at the distance, so that the cracks at each branch pipe can be filled by pouring the branch pipes, and the situation that the cracks at the adjacent branch pipes are too big due to the fact that the branch pipes are too close to each other and the cracks are communicated is avoided, and a new concrete layer is damaged.
Furthermore, the branch pipes and the main pipe are vertically arranged and the branch pipes are vertically distributed downwards.
Through adopting above-mentioned technical scheme, be vertical downward setting with the branch pipe, avoid when carrying out concrete grout and pour, the branch pipe is the slope setting, leads to concrete grout to adsorb on the inner wall in the branch pipe and causes the jam to make pouring of concrete grout not abundant.
Further, the waterstop layer comprises an expansion waterstop, and the expansion waterstop is arranged in the new concrete layer and located below the branch pipe.
Through adopting above-mentioned technical scheme, set up the inflation waterstop in new concrete layer in the bottom of branch pipe, when pouring the concrete, absorb the moisture in the concrete thick liquid through the inflation waterstop, inhale dry the design fast with the concrete thick liquid, and the inflation waterstop absorbs water the inflation and fills up the intraformational crack of new concrete.
The utility model discloses following beneficial effect has:
when the utility model is used for connecting new and old concrete layers, the installation channel is processed between the new concrete layer and the old concrete layer, the steel bar is penetrated into the new concrete layer and the old concrete layer along the rotation of the installation channel, the steel bar is bonded in the installation channel through the anchoring glue layer, the main pipe is arranged between the new concrete layer and the old concrete layer, the branch pipe is vertically arranged downwards along the side wall of the main pipe, the main pipe and the branch pipe are arranged in the new concrete layer and positioned at the joint of the new concrete layer and the old concrete layer for inducing the temperature cracks and settlement cracks of the building structure, the existence of the main pipe and the branch pipe can cause the local stress concentration of the connecting surface to become the weak point of the connecting surface, thereby becoming the inducement source of crack generation, the cracks of the new concrete layer are intensively generated at the main pipe and the branch pipe, and the main pipe and the branch pipe are also used for grouting and repairing the cracks generated by the new concrete layer, through the slip casting mouth injection concrete thick liquid to being responsible for on, transmit the concrete thick liquid to crack department, repair the crack on new concrete layer, absorb the inflation through the moisture of inflation waterstop to crack department and plug up the crack for the intensity on new concrete layer improves.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;
fig. 2 is a schematic axial sectional structure diagram of a main pipe of a preferred embodiment of the present invention.
Illustration of the drawings:
1. a new concrete layer; 2. an old concrete layer; 3. a connecting assembly; 31. planting bars; 32. installing a channel; 33. an adhesive layer; 4. a grouting component; 41. a main pipe; 42. a branch pipe; 43. a grouting port; 5. a water stopping layer; 51. an expansion water stop.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered below.
As shown in fig. 1 and fig. 2, the embodiment discloses a new and old concrete interface waterproof structure with pre-embedded distributed grouting pipes, which comprises a new concrete layer 1 attached to the end of an old concrete layer 2, a connecting component 3, a grouting component 4 and a water stop layer 5 are arranged between the new concrete layer 1 and the old concrete layer 2, the new concrete layer 1 and the old concrete layer 2 are connected into a whole through the connecting component 3, the grouting component 4 is arranged at the joint of the new concrete layer 1 and the old concrete layer 2, local stress concentration of the joint surface can be caused through the grouting component 4 to become a weak point of the joint surface, and then become an induction source for generating cracks, the grouting component 4 is uniformly arranged in a tree root shape, so that uniform crack induction points can be provided for a large-area joint interface, when cracks occur due to excessive stress in a concrete structure, concrete near the grouting component 4 cracks and expands strain energy which is too large, therefore, the purpose that the cracks can be concentrated near the grouting assembly 4 is achieved, and conditions are provided for concentrated crack repair. Be provided with stagnant water layer 5 in the junction on new concrete layer 1 and old concrete layer 2, stagnant water layer 5 sets up in the below of slip casting subassembly 4, absorbs the inflation through the moisture of the concrete of stagnant water layer 5 to slip casting subassembly 4, fills the gap of new concrete and old concrete junction.
Refer to fig. 1, fig. 2, coupling assembling 3 is including straight muscle, new concrete layer 1 and butt are worn to establish by bar planting 31 in old concrete layer 2, installation passageway 32 has been seted up between new concrete layer 1 and old concrete layer 2, be provided with the adhesive linkage on bar planting 31's the outer wall, insert bar planting 31 between new concrete layer 1 and old concrete layer 2 along installation passageway 32, and it is fixed with bar planting 31 together to adhere through adhesive linkage 33 and installation passageway 32's inner wall, adhesive linkage 33 is the anchor glue film, through anchor glue film bonding installation passageway 32 and bar planting 31, installation passageway 32's aperture is greater than the diameter 5mm of straight muscle, it is connected and fixed to bar planting 31 to adhere the anchor glue film in installation passageway 32. The length of the embedded bar 31 penetrating into the old concrete is 35cm, and the straight bar is inserted between the new concrete layer 1 and the old concrete layer 2 for fixing.
Referring to fig. 1 and 2, the grouting assembly 4 includes a main pipe 41 and branch pipes, the main pipe 41 is arranged at the joint of the new concrete layer 1 and the old concrete layer 2, the branch pipes are welded on the outer wall of the main pipe 41 and are arranged vertically downwards, and the main pipe 41 is communicated with the branch pipes. And grouting pipes are arranged on the main pipe 41 every 10m, grouting ports 43 are arranged on the grouting pipes, and the grouting ports 43 are communicated with the main pipe 41 to inject concrete slurry and fill cracks. The distance between the adjacent branch pipes 42 is 0.7 m. By setting the distance between the branch pipes 42 to 0.7m, it is avoided that the distance between the branch pipes 42 is too close, resulting in that the branch pipes 42 occupy more space within the new concrete layer 1, so that the strength of the new concrete layer 1 is impaired.
Referring to fig. 1 and 2, the water stopping layer 5 includes an expansion water stop 51, the expansion water stop 51 is arranged in the new concrete layer 1 and below the branch pipes 42, and the concrete slurry injected into the branch pipes 42 absorbs water, so that cracks at the branch pipes 42 are filled by self expansion, and the stability of the new concrete layer 1 is improved.
The working principle of the new and old concrete interface waterproof structure of the embedded distributed grouting guide pipe comprises the following steps: when connecting a new concrete layer 2 and an old concrete layer 2, a mounting channel 32 is processed between the new concrete layer 1 and the old concrete layer 2, a planting bar 31 is rotated along the mounting channel 32 to penetrate the new concrete layer 1 and the old concrete layer 2, the planting bar 31 is bonded in the mounting channel 32 through an anchoring adhesive layer, a main pipe 41 is arranged between the new concrete layer 1 and the old concrete layer 2, a branch pipe 42 is vertically arranged downwards along the side wall of the main pipe 41, the main pipe 41 and the branch pipe 42 are arranged in the new concrete layer 1 and are positioned at the joint of the new concrete layer 1 and the old concrete layer 2 for inducing temperature cracks and settlement cracks of a building structure, the local stress concentration of the joint surface can be caused by the existence of the main pipe 41 and the branch pipe 42, the local stress concentration becomes the weak point of the joint surface and further becomes an inducing source of the cracks, and the cracks of the new concrete layer 1 are intensively generated at the main pipe 41 and the branch pipe 42, the main pipe 41 and the branch pipes 42 are also used for grouting and repairing cracks generated by the new concrete layer 1, concrete slurry is injected into the grouting openings 43 in the main pipe 41, the concrete slurry is transmitted to the cracks, the cracks of the new concrete layer 1 are repaired, and the cracks are blocked by absorbing and expanding moisture at the cracks through the expansion water stop belts 51, so that the strength of the new concrete layer 1 is improved.
Example 2
The difference of this embodiment and embodiment 1 lies in that coupling assembling 3 includes the steel reinforcement cage, one side fixedly connected with double-screw bolt of steel reinforcement cage, at the internal embedded nut of old concrete layer, stretch into in old concrete layer 2 and with the nut threaded connection in old concrete layer 2 through the double-screw bolt, through pour new concrete layer 1 on the steel reinforcement cage, with new concrete layer 1 and old concrete layer 2 link in an organic whole.
Example 3
The difference between this embodiment and embodiment 1 lies in that slip casting subassembly 4 includes main pipe 41 and branch pipe 42, main pipe 41 level sets up in new concrete layer 1, branch pipe 42 sets up on main pipe 41, branch pipe 42 is vertical setting, wear to be equipped with a plurality of pouring holes along the wall thickness direction on the perisporium of branch pipe 42, when the junction of new concrete layer 1 and old concrete layer 2 produced the crack, through injecting the concrete thick liquid to main pipe 41, pass through main pipe 41 with the concrete thick liquid in transmitting branch pipe 42, spill over the concrete thick liquid along the perisporium of branch pipe 42 under the effect of pouring hole on the perisporium of branch pipe 42, fill up the crack of branch pipe 42 perisporium, make the filling effect of crack better, the efficiency of crack has been improved.
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. The utility model provides a new and old concrete interface waterproof construction of pre-buried distributed slip casting pipe, includes new concrete layer (1), the terminal surface on new concrete layer (1) laminating old concrete layer (2), its characterized in that: further comprising:
the connecting assembly (3), the connecting assembly (3) is arranged in the new concrete layer (1), and the connecting assembly (3) is used for connecting the new concrete layer (1) with old concrete;
the grouting component (4) is arranged in the new concrete layer (1) and close to the joint of the new concrete layer (1) and the old concrete layer (2), the grouting component (4) is used for intensively inducing cracks of the new concrete layer (1) and generating the cracks at the grouting component (4), and the grouting component (4) is also used for timely repairing the cracks generated by the new concrete layer (1);
the water stopping layer (5) is arranged in the joint of the new concrete layer (1) and the old concrete layer (2) and is positioned below the grouting component (4), and the water stopping layer (5) is used for adsorbing water brought by the new concrete grout injected by the grouting component (4) to expand so as to seal the joint of the new concrete layer (1) and the old concrete layer (2).
2. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 1, wherein: coupling assembling (3) are including planting muscle (31), planting muscle (31) are worn to establish new concrete layer (1) and alternate in old concrete layer (2), be provided with adhesive linkage (33) on planting muscle (31).
3. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 2, wherein: the adhesive linkage (33) includes the anchor glue film, the anchor glue film set up in on the outer wall of bar planting (31), be provided with installation passageway (32) of intercommunication between new concrete layer (1) and the old concrete, bar planting (31) peg graft in installation passageway (32), the anchor glue film with the inner wall bonding of installation passageway (32) is in order to incite somebody to action bar planting (31) are fixed in installation passageway (32).
4. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 3, wherein: the aperture of the mounting channel (32) is 3-8mm larger than the diameter of the embedded bar (31).
5. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 3, wherein: the depth of the embedded bars (31) extending into the old concrete is 20-50 cm.
6. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 5, wherein: the grouting assembly (4) comprises a main pipe (41) and a plurality of branch pipes (42), the main pipe (41) is embedded in the new concrete layer (1), the branch pipes (42) are communicated with the main pipe (41) respectively and are inserted into the new concrete layer (1), and the end parts of the branch pipes (42) extend into the connecting part of the new concrete layer (1) and the old concrete layer and are located on the peripheral side of the main pipe (41).
7. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 6, wherein: and the main pipe (41) is provided with a grouting pipe with grouting ports (43) every 8-12m, the grouting ports (43) extend out of the new concrete layer (1) and are distributed, and the grouting ports (43) are communicated with the inner cavity of the main pipe (41) through the grouting pipes.
8. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 6, wherein: the distance between the adjacent branch pipes (42) is 0.4-1 m.
9. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 6, wherein: the branch pipes (42) and the main pipe (41) are vertically arranged, and the branch pipes (42) are vertically and downwards arranged.
10. The new and old concrete interface waterproof structure of embedded distributed grouting guide pipes as claimed in claim 6, wherein: the water stopping layer (5) comprises an expansion water stop belt (51), and the expansion water stop belt (51) is arranged in the new concrete layer (1) and is positioned below the branch pipe (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121172963.1U CN214941155U (en) | 2021-05-28 | 2021-05-28 | New and old concrete interface waterproof structure of pre-buried distributed slip casting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121172963.1U CN214941155U (en) | 2021-05-28 | 2021-05-28 | New and old concrete interface waterproof structure of pre-buried distributed slip casting pipe |
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| Publication Number | Publication Date |
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| CN214941155U true CN214941155U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121172963.1U Active CN214941155U (en) | 2021-05-28 | 2021-05-28 | New and old concrete interface waterproof structure of pre-buried distributed slip casting pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182612A (en) * | 2022-07-18 | 2022-10-14 | 广东二十冶建设有限公司 | Method for repairing structural crack without destroying existing decoration layer and waterproof layer |
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2021
- 2021-05-28 CN CN202121172963.1U patent/CN214941155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182612A (en) * | 2022-07-18 | 2022-10-14 | 广东二十冶建设有限公司 | Method for repairing structural crack without destroying existing decoration layer and waterproof layer |
| CN115182612B (en) * | 2022-07-18 | 2023-10-27 | 广东二十冶建设有限公司 | Method for repairing structural cracks without damaging existing decoration layer and waterproof layer |
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