CN210597400U - Induced joint structure of concrete overlength structure - Google Patents
Induced joint structure of concrete overlength structure Download PDFInfo
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- CN210597400U CN210597400U CN201921126559.3U CN201921126559U CN210597400U CN 210597400 U CN210597400 U CN 210597400U CN 201921126559 U CN201921126559 U CN 201921126559U CN 210597400 U CN210597400 U CN 210597400U
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Abstract
The utility model relates to an induction seam structure of a concrete overlength structure, which is characterized in that an induction seam is arranged from the upstream surface to the back surface of a concrete member; the T-shaped seam leading plate is arranged in the induction seam in a through manner, the T-shaped seam leading plate comprises a transverse plate and a vertical plate, the transverse plate is located on the upstream side, two ends of the transverse plate are inserted into concrete components on two sides of the induction seam, and the vertical plate is located on the back side and located in the induction seam. The utility model relates to a rationally and economical and practical can guarantee that underground structure is under construction in succession, and the guide crack is regularly developed in induced seam department, effectively solves underground structure fracture irregularity, easy infiltration, the scheduling problem that leaks.
Description
Technical Field
The utility model belongs to the technical field of concrete structure construction, concretely relates to induced seam structure of concrete overlength structure.
Background
With the development of cities, more and more ultra-long concrete structures are applied to underground spaces. The ultra-long concrete structure is a reinforced concrete structure with the distance between expansion joints exceeding the maximum distance specified by a specification, or the reinforced concrete structure with the distance between the expansion joints not exceeding the specification limit value, larger structural temperature difference change and larger concrete contraction. In the construction and operation process of the ultra-long and large-volume concrete structure, internal stress is generated in the concrete structure due to various factors such as temperature change, concrete shrinkage, expansion, creep and uneven settlement, and the like, so that the concrete structure is cracked.
According to the concrete design code 9.1.1, the maximum distance between the expansion joints of structures such as basement walls and the like in a cast-in-place type indoor space is 30m, and the outdoor space is 20 m. In the case of adopting post-cast strip sectional construction for concrete pouring, adopting special pre-stressing measures and adopting measures capable of reducing concrete temperature change or shrinkage, if sufficient basis and reliable measures are provided, the maximum distance of the expansion joint can be properly increased. At present, most underground concrete structures far exceed the length specified by the standard, and a post-cast strip is usually arranged. However, the disadvantages of the post-cast strip are mainly: (1) building rubbish is easy to accumulate in the reserved post-cast strip seam, and the post-cast strip seam is not easy to clean, so that the concrete pouring quality of the post-cast strip is affected. (2) The bonding strength of the new and old concrete at the post-cast strip is difficult to ensure, and cracks are easily generated at the joints of the new and old concrete to cause water leakage. (3) Before the concrete is poured and mixed, the concrete on the two sides needs to be chiseled, which brings inconvenience to the construction, and the concrete pouring interval at the post-pouring zone is several months, which influences the construction progress. The induction seams are also arranged in the ultra-long concrete structure as required, but the induction seams have the problems that the cracks are distributed irregularly due to irregular crack induction in actual construction, water leakage is serious, leakage is caused easily due to the fact that structural seam induction objects are not easy to clean or cannot be cleaned cleanly, and the like.
Disclosure of Invention
The utility model aims at providing an induced seam structure of concrete overlength structure can guarantee the continuous construction of underground structure, and induced concrete is at design position regular fracture, effectively solves the underground structure fracture irregular, easy infiltration, the scheduling problem that leaks.
The utility model discloses the technical scheme who adopts does:
the utility model provides an induced seam structure of concrete overlength structure which characterized in that:
arranging an induction seam in the whole length from the upstream surface to the back surface of the concrete member;
the T-shaped seam leading plate is arranged in the induction seam in a through manner, the T-shaped seam leading plate comprises a transverse plate and a vertical plate, the transverse plate is located on the upstream side, two ends of the transverse plate are inserted into concrete components on two sides of the induction seam, and the vertical plate is located on the back side and located in the induction seam.
A buried water stop belt is arranged in the concrete member and on one side of the back surface of the T-shaped seam guide plate in a through manner.
The concrete member is internally provided with a middle buried water stop belt, and the back surface side of the concrete member is longitudinally provided with gap reinforcing ribs at intervals.
PVC sleeves are sleeved outside two ends of the seam-crossing reinforcing rib, the PVC sleeves are filled with lubricating oil, and the PVC sleeves are plugged at two ends by using cement.
The induction seam of the back surface of the concrete member is provided with a groove which is filled with asphalt ointment.
A reinforcing steel bar layer is arranged in the upstream surface of the concrete member and spans the induction seam, and the reinforcing steel bar layer comprises transverse bars and longitudinal bars.
A reinforcing steel bar layer is arranged in the back water surface of the concrete member, the self-induced joints are broken and are bilaterally symmetrical, and the self-induced joints comprise transverse anchoring bars and longitudinal bars which are bent towards the water surface from two sides of the induced joints.
The upstream face of the concrete member is provided with a flexible waterproof layer which covers the induction joint and comprises an externally-attached rubber waterstop which is longitudinal outside the induction joint and a rubber waterproof coiled material which is arranged on the full upstream face outside the externally-attached rubber waterstop, and waterproof paint is coated outside the rubber waterproof coiled material.
The surface of the T-shaped seam guide plate is adhered with a waterproof rubber layer.
The utility model has the advantages of it is following:
1. the cross-joint reinforcing rib is arranged, the induced joint is bridged, the left side and the right side of the induced joint are respectively provided with a PVC sleeve, the length of the PVC sleeve is 1m, the interior of the PVC sleeve is filled with butter, and two ends of the PVC sleeve are plugged by daub. The gap reinforcing rib can improve the integral rigidity of the concrete member, and meanwhile, the gap reinforcing rib can move in the PVC sleeve, so that the bonding force between the reinforcing rib and the concrete is weakened, a weak area is formed at the induced gap, and the crack controllability is improved.
2. Set up T type and draw the seam board, increase concrete member cross-section loss rate, can further improve crack development regularity, the waterproof rubber of cladding on drawing the seam board has improved waterproof, the impermeability of induced seam department.
3. A flexible waterproof layer is arranged on the upstream face of the concrete member and is divided into three waterproof layers, so that the waterproof performance and the impermeability of the concrete member are improved.
4. The structure seam inducing strip is hard strip-shaped objects such as hardwood strips and can be directly connected with the concrete member template, the structure seam inducing strip can be integrally detached from the template during template detachment, the structure seam is convenient to detach, the structure seam is easy to clean, and the water leakage and water seepage of the induced seam caused by the existence of residues are avoided.
Drawings
Fig. 1 is a sectional view of the formwork supporting stage of the present invention.
Fig. 2 is a sectional view of the usage stage of the present invention.
Fig. 3 is a partial enlarged view of a in fig. 2.
In the figure, 1-concrete member, 2-upstream surface, 3-back surface, 4-reinforcing steel bar layer, 5-seam-crossing reinforcing rib, 6-PVC sleeve, 7-buried water stop, 8-T type seam guide plate, 9-induced seam, 10-cushion block, 11-seam-inducing strip, 12-template, 13-flexible waterproof layer, 14-asphalt factice, 15-externally-attached rubber water stop, 16-rubber waterproof coiled material and 17-waterproof coating.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to an induced seam structure of concrete overlength structure sets up induced seam 9 from the upstream surface 2 of concrete member 1 to 3 full length on the back of the body surface. The T-shaped seam guide plate 8 is arranged in the induction seam 9 in a through manner, the T-shaped seam guide plate 8 comprises a transverse plate and a vertical plate, the transverse plate is located on one side of the upstream face 2, two ends of the transverse plate are inserted into the concrete members 1 on two sides of the induction seam 9, and the vertical plate is located on one side of the back face 3 and located in the induction seam 9. The surface of the T-shaped seam leading plate 8 is pasted with a waterproof rubber layer.
A buried water stop belt 7 is arranged in the concrete member 1 and on one side of the back surface 3 of the T-shaped seam guide plate 8 in a long mode, the buried water stop belt 7 is a steel-edged rubber water stop belt with good ductility, the width is not less than 35cm, and the lap joint length is not less than 15 cm.
The concrete member 1 is provided with gap reinforcing ribs 5 at intervals longitudinally on one side of the back water surface 3 of the buried water stop belt 7. PVC sleeves 6 are sleeved at two ends of the seam-crossing reinforcing rib 5, the length of the pipe is 1m, lubricating oil such as butter is filled in the pipe, and two ends of the pipe are plugged by daub. The gap-crossing reinforcing ribs 5 are paved along the induced gaps 9 at intervals of 5 m.
A groove is arranged at the induction seam 9 of the back surface 3 of the concrete member 1, and asphalt factice 14 is filled in the groove.
The upstream face 2 of the concrete member 1 is internally provided with a reinforcing steel bar layer 4 which spans across the induced joints 9 and comprises transverse bars and longitudinal bars. The reinforcing steel bar layer 4 is arranged in the back water surface 3 of the concrete member 1, the self-induced joints 9 are broken and are bilaterally symmetrical, and the structural joints of the induced joints 9 are formed by the anchoring ribs and the longitudinal ribs which are transversely bent towards the upstream surface 2 at two sides of the induced joints 9.
The upstream face 2 of the concrete member 1 is provided with a flexible waterproof layer 13 which covers the induction joint 9 and comprises an externally-attached rubber water stop belt 15 which is longitudinally outside the induction joint 9 and a rubber waterproof coiled material 16 which is arranged outside the externally-attached rubber water stop belt 15 and is fully upstream face 2, and the rubber waterproof coiled material 16 is externally coated with a waterproof coating 17.
As shown in fig. 1, the structure diagram of the formwork supporting stage constructed by the present invention is that the induction seam 9 is disposed on the backside surface 3 of the concrete member, the reinforcement layers 4 are disposed on the upper and lower surfaces in the concrete member, the external reinforcement on the backside surface is broken at the induction seam 9 and is bent and anchored, so as to form the structural seam of the induction seam 9, and the induction seam 9 is developed at the design position; one gap reinforcing rib 5 is laid along the inducing seam 9 at intervals of 5m between the reinforcing rib layers 4, the inducing seam 9 is bridged, the left side and the right side of the inducing seam 9 are respectively provided with a PVC sleeve 6, the length of the pipe is 1m, the pipe is filled with butter, two ends of the PVC sleeve are plugged by daub, and the type and the size of the gap reinforcing rib 5 are the same as those of the main stress rib of the concrete component 1. The gap reinforcing ribs 5 can improve the overall rigidity of the concrete member 1, meanwhile, the gap reinforcing ribs 5 can move in the PVC sleeve 6, the bonding force of the reinforcing ribs and concrete is weakened, a weak area is formed at the induced seam 9, and the crack controllability is improved; fully paving a middle-buried water stop 7 along the induction seam 9 between the reinforcing steel bar layers 4, wherein the middle-buried water stop 7 is a steel-edged rubber water stop with good ductility, the width of the middle-buried water stop is not less than 35cm, the lap joint length of the middle-buried water stop is not less than 15cm, and the water resistance and the impermeability of the induction seam 9 are ensured; a T-shaped seam leading plate 8 is arranged between the reinforcing steel bar layers 4 along the whole length of the induced seam 9, the seam leading plate is a T-shaped water stop steel plate, and waterproof rubber is adhered on the T-shaped water stop steel plate so as to increase the section loss rate of the concrete member and further improve the crack development regularity and the water resistance and impermeability of the induced seam; filling in and luring the seam strip in the structural joint, luring the seam strip to be stereoplasm strips such as stereoplasm stuff, can with concrete form 12 lug connection, when form removal, with the whole dismantlement of template, it is convenient to dismantle, and the structural joint is easily cleared up, can effectively avoid having the residue to lead to induced seam department to leak. Meanwhile, cushion blocks are bound on the reinforcing steel bars around the seam inducing strips, and the thickness of the reinforcing steel bar protective layer at the structural seam is ensured.
As shown in the structure diagram of the use stage of fig. 2, after the structural joint is removed and cleaned, the structural joint is filled with asphalt ointment 14 with good waterproof and aging resistance. The waterproof structure is characterized in that a flexible waterproof layer 13 is arranged on the upstream face of the concrete member 1, the flexible waterproof layer 13 is respectively an externally-attached rubber waterstop 15 which is fully attached along an induction seam, a rubber waterproof coiled material 16 which is fully adhered along the upstream face of the concrete member 1 and a waterproof coating 17 which is fully covered on the rubber waterproof coiled material from inside to outside, three waterproof steps are totally carried out, and the waterproof and impermeability properties of the concrete member 1 are obviously improved.
The induction seams are arranged along the full length of the back surface of the concrete structure, the depth of the induction seams is determined according to the thickness of the concrete structure, when the concrete generates deformation or tensile stress, the induction seams are generated at the induction seams, and the cracks gradually develop from the back surface to the upstream surface.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (9)
1. The utility model provides an induced seam structure of concrete overlength structure which characterized in that:
an induction seam (9) is arranged from the upstream surface (2) to the back surface (3) of the concrete member (1) in the whole length;
the T-shaped seam guide plate (8) is arranged in the induction seam (9) in a through manner, the T-shaped seam guide plate (8) comprises a transverse plate and a vertical plate, the transverse plate is located on one side of the upstream face (2), two ends of the transverse plate are inserted into the concrete members (1) on two sides of the induction seam (9), and the vertical plate is located on one side of the downstream face (3) and located in the induction seam (9).
2. The induction joint structure of the concrete overlength structure according to claim 1, characterized in that:
a middle-buried water stop (7) is arranged in the concrete member (1) and on one side of the back water surface (3) of the T-shaped seam guide plate (8) in a through manner.
3. The induction joint structure of the concrete overlength structure according to claim 2, characterized in that:
the concrete member (1) is internally provided with gap reinforcing ribs (5) at intervals along the longitudinal direction on one side of the back water surface (3) of the buried water stop (7).
4. The induction joint structure of the concrete overlength structure according to claim 3, wherein:
PVC sleeves (6) are sleeved outside two ends of the seam-crossing reinforcing rib (5), the tubes are filled with lubricating oil, and the two ends of the seam-crossing reinforcing rib are plugged by daub.
5. The induction joint structure of the concrete overlength structure according to claim 4, wherein:
a groove is arranged at an induction seam (9) of the back surface (3) of the concrete member (1), and asphalt factice (14) is filled in the groove.
6. The induction joint structure of the concrete overlength structure according to claim 5, wherein:
a reinforcing steel bar layer (4) is arranged in the upstream face (2) of the concrete member (1) and spans across the induced joints (9), and the reinforcing steel bar layer comprises transverse bars and longitudinal bars.
7. The induction gap structure of the concrete overlength structure according to claim 6, wherein:
a reinforcing steel bar layer (4) is arranged in the back water surface (3) of the concrete member (1), the self-induced joints (9) are broken and are bilaterally symmetrical, and the self-induced joints comprise anchoring bars and longitudinal bars which are transversely bent towards the upstream surface (2) at two sides of the self-induced joints (9).
8. The induction joint structure of the concrete overlength structure according to claim 7, wherein:
the water-proof concrete member is characterized in that a flexible waterproof layer (13) is arranged on the upstream face (2) of the concrete member (1), an induction seam (9) is covered, the flexible waterproof concrete member comprises an externally longitudinal externally-attached rubber water stop (15) of the induction seam (9) and a rubber waterproof coiled material (16) arranged on the upstream face (2) outside the externally-attached rubber water stop (15), and waterproof paint (17) is coated outside the rubber waterproof coiled material (16).
9. The induction joint structure of the concrete overlength structure according to claim 8, wherein:
the surface of the T-shaped seam guide plate (8) is adhered with a waterproof rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921126559.3U CN210597400U (en) | 2019-07-18 | 2019-07-18 | Induced joint structure of concrete overlength structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921126559.3U CN210597400U (en) | 2019-07-18 | 2019-07-18 | Induced joint structure of concrete overlength structure |
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| CN210597400U true CN210597400U (en) | 2020-05-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718111A (en) * | 2022-05-10 | 2022-07-08 | 成都建工第六建筑工程有限公司 | Advanced sealing structure for retaining wall post-cast strip and construction method |
| CN117738339A (en) * | 2024-02-19 | 2024-03-22 | 北京市建筑工程研究院有限责任公司 | Concrete basement outer wall crack induction structure and construction method thereof |
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2019
- 2019-07-18 CN CN201921126559.3U patent/CN210597400U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718111A (en) * | 2022-05-10 | 2022-07-08 | 成都建工第六建筑工程有限公司 | Advanced sealing structure for retaining wall post-cast strip and construction method |
| CN117738339A (en) * | 2024-02-19 | 2024-03-22 | 北京市建筑工程研究院有限责任公司 | Concrete basement outer wall crack induction structure and construction method thereof |
| CN117738339B (en) * | 2024-02-19 | 2024-05-07 | 北京市建筑工程研究院有限责任公司 | Concrete basement outer wall crack induction structure and construction method thereof |
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