CN220565281U - Waterproof structure at construction joint of overlapped outer wall of basement - Google Patents
Waterproof structure at construction joint of overlapped outer wall of basement Download PDFInfo
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- CN220565281U CN220565281U CN202322151471.XU CN202322151471U CN220565281U CN 220565281 U CN220565281 U CN 220565281U CN 202322151471 U CN202322151471 U CN 202322151471U CN 220565281 U CN220565281 U CN 220565281U
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- basement
- valve core
- water
- steel sleeve
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 8
- 238000009415 formwork Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses a waterproof structure at a superposed outer wall construction joint of a basement, which comprises a lower basement outer wall and a water-stopping steel plate, wherein the lower half part of the water-stopping steel plate is embedded in the concrete of the lower basement outer wall, and the upper half part of the water-stopping steel plate is protruded above the interface at the top of the lower basement outer wall; the water-stopping steel plate is provided with a vertical groove with an upward opening, a vertical steel sleeve with an upward opening is welded in the vertical groove in a sealing way, and a transverse through hole for leading accumulated water in the outer side area of the water-stopping steel plate to be led inwards is formed in the wall of the steel sleeve; and a valve core for sealing and isolating the transverse through hole is also arranged in the steel sleeve. The waterproof structure can avoid a great deal of accumulated water on the top surface of the outer wall of the basement of the next layer in the time gap of casting the outer wall of the basement of the upper layer and the lower layer.
Description
Technical Field
The utility model relates to the field of basement waterproof construction of buildings or structures, in particular to a waterproof device for construction joints between different layers of different heights of an overlapped outer wall of a single-side formwork of a basement.
Background
When constructing the building or the underground space of the structure, constructing a retaining pile wall or a ground connecting wall along the side line of the foundation pit to serve as a supporting retaining wall, and then digging the foundation pit to the pit bottom; and then pouring the basement bottom plate, and then pouring the basement outer wall layer by layer upwards. In a conventional foundation pit supporting system, a gap exists between an outer wall of a basement and a supporting baffle wall. A superimposed construction method features that the supporting wall is directly used as the external formwork of external wall of basement, and the concrete of external wall of basement is poured by supporting formwork on its internal side. The overlapping construction method of the single-side formwork omits the half formwork working procedure on the outer side, so that the construction period is shortened, the material consumption is reduced, the outer wall of the basement is tightly attached to the supporting and retaining wall, no gap is reserved between the two, the land resource is saved, the economic situation of the current size of the earth is more met, and the method is increasingly widely applied.
Because the basement outer wall is poured layer by layer in batches from bottom to top, construction joints are formed between different layers of high walls, and a water stop steel plate is arranged between every two layers of walls of the basement outer wall to prevent leakage of the construction joints; more precisely, binding a water-stop steel plate on the upper part of a reinforcement cage of a lower wall body, pouring concrete of the lower wall body to anchor the lower half part of the water-stop steel plate, and upwards protruding the upper half part of the water-stop steel plate from the interface of the concrete top of the lower wall body; and after the upper wall is cast subsequently, the water stop steel plate at the construction joint of the upper wall and the lower wall is formed.
In order to further enhance the waterproof and seepage-proof effects, a layer of waterproof coiled material is paved on the whole inner surface of the supporting retaining wall so as to prevent external soil moisture from penetrating into the foundation pit. However, the waterproof coiled material cannot be as large as the inner surface of the supporting and retaining wall, and is inevitably spliced by a plurality of small waterproof coiled materials, and water leakage is hardly avoided at the splicing positions of different coiled materials; in addition, the ribs are planted on the inner surface of the supporting retaining wall frequently due to the requirement of formwork support and reinforcement, and the planted ribs penetrate through the waterproof coiled material, so that the waterproof effect is further reduced. Therefore, in actual construction, the external water of the foundation pit can continuously permeate through the supporting retaining wall and the waterproof coiled material.
This causes the following drawbacks. After the next layer of basement outer wall is poured, before the last layer of basement outer wall is poured, water permeated from the waterproof coiled material is collected at the interface at the top of the next layer of basement outer wall and is blocked by the water stopping steel plate protruding upwards, so that the water can not be discharged into the foundation pit, and the water stopping steel plate can only be deposited on the outer side area of the water stopping steel plate at the interface continuously. The casting interval of the outer walls of the upper basement layer and the lower basement layer is longer, the lower concrete layer needs to be waited for drying and hardening, the interface of the lower wall body needs to be roughened and cleaned, the upper layer of reinforcement cage needs to be bound, the single-side formwork of the upper wall body needs to be supported and reinforced, the concrete pouring scaffold of the upper layer needs to be erected, and a plurality of complicated steps are needed, and the manual overlapping is insufficient, so that the casting interval of the outer walls of the upper basement layer and the lower basement layer is up to 15 days. Thus, after 15 days, the water seepage almost fills the outside area of the water stop steel plate. Thus, concrete cast in the area is greatly diluted, so that the casting quality is poor, the strength and the hardness are not ideal, and the hidden danger of water leakage is high. Of course, it has also been proposed in the industry that the water in the outer area of the water-stop steel plate is pumped out by the hand-held water pump, but because the reinforcement cage of the outer wall of the basement of the upper layer is tightly bound, the intervals between different reinforcements are narrow, the top surface of the outer wall of the basement of the lower layer can be blocked, and the water pumping operation of workers is difficult.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a waterproof structure at a construction joint of a superposed outer wall of a basement, which can prevent a large amount of water accumulation on the top surface of the outer wall of the basement of the next layer in a time gap for pouring the outer wall of the basement of the upper layer and the lower layer, thereby improving the pouring quality of the outer side area of a water stop steel plate.
The technical scheme of the utility model is that the waterproof structure at the construction joint of the superposed outer wall of the basement comprises a lower layer of basement outer wall and a water-stopping steel plate, wherein the lower half part of the water-stopping steel plate is embedded in the concrete of the basement outer wall of the lower layer, and the upper half part of the water-stopping steel plate protrudes upwards from the interface at the top of the basement outer wall of the lower layer; the water-stopping steel plate is provided with a vertical groove with an upward opening, a vertical steel sleeve with an upward opening is welded in the vertical groove in a sealing way, and a transverse through hole for leading accumulated water in the outer side area of the water-stopping steel plate to be led inwards is formed in the wall of the steel sleeve; and a valve core for sealing and isolating the transverse through hole is also arranged in the steel sleeve.
Compared with the prior art, the waterproof structure of the overlapping type outer wall construction joint of the basement with the structure has the following advantages and technical effects.
After the outer wall of the basement of the next layer is poured, the valve core is in an initial state, and the transverse through holes are unobstructed; before the upper layer of basement outer wall is poured, water penetrating from the waterproof coiled material flows through the interface at the top of the lower layer of basement outer wall, but is not blocked by the water-stopping steel plate, but is timely led by the transverse through holes to be discharged into the foundation pit, so that water is prevented from being deposited in the area outside the water-stopping steel plate at the interface of the outer wall, the area is relatively dry, concrete is prevented from being diluted when the upper layer of wall is poured later, pouring construction quality is improved, the strength and hardness of a construction joint area are enhanced, and the hidden danger of water leakage in the area is reduced.
The valve core structure is characterized in that the steel sleeve is provided with an internal thread, the top end of the valve core is provided with a handle, the middle section of the valve core is provided with an external thread, the external thread of the valve core is screwed with the internal thread of the steel sleeve, when the valve core is screwed to a lower limit point position, the transverse through hole is closed, and when the valve core is screwed to other point positions, the transverse through hole is communicated; the valve core structure can keep smooth drainage after concrete of the outer wall of the next layer of basement is poured and tamped, water accumulation in the outer side area of the water stop steel plate is avoided, and the transverse through holes can be screwed downwards to seal the transverse through holes immediately before the outer wall of the next layer of basement is poured and tamped, so that the passages are completely and permanently sealed; moreover, the sealing action is convenient and fast to operate, and workers only need to extend hands into the gaps between the reinforcing steel bars to screw the handles, so that the sealing device is especially suitable for the condition that reinforcing steel bars at the upper part of the interface of the outer wall of the basement of the next layer are dense.
As a further preferable mode, a rubber plug is arranged in the steel sleeve; in the initial state, the rubber plug is clamped at a position higher than the transverse through hole in the pipe cavity of the steel sleeve, and when the valve core rotates to a lower limit point, the bottom end of the valve core presses the rubber plug down to be tightly pressed on the bottom end plate of the steel sleeve; thus, in the initial stage, the outer diameter of the rubber plug is slightly larger than the pipe cavity of the steel sleeve, so that the rubber plug can not drop downwards due to stable clamping, the water seepage path is prevented from being blocked in advance, the rubber plug is pressed down by the lower rotary valve core before the upper basement outer wall is poured, the rubber plug is flattened, the diameter of the valve core is increased and deformed, the inner wall of the steel sleeve is tightly attached to the valve core in a more compact manner, the transverse through hole is sealed in a more compact and durable manner, and the waterproof and seepage-preventing effect is further improved.
The other preferable valve core structure is that the valve core is provided with a plurality of transverse through holes which are distributed on the wall of the steel sleeve in a vertical row, and the valve core is communicated with a row of a plurality of valve holes which are in one-to-one correspondence with the transverse through holes; the top end of the valve core is provided with an inner pin hole, and the top end of the steel sleeve is provided with two groups of mutually perpendicular outer pin holes; the waterproof structure further comprises a pin, and when the pin locks the inner pin hole and the first group of outer pin holes, each valve hole is communicated with the corresponding transverse through hole; when the pin locks the inner pin hole and the second group of outer pin holes, each valve hole is vertically separated from the corresponding transverse through hole; thus, the valve core can be screwed by 90 degrees, and the on-off of the valve hole can be easily adjusted; after the water seepage path is cut off, the valve core is locked by a pin passing through the inner pin hole and the second outer pin hole, so that the unexpected water seepage condition of the path after the upper layer of wall body is poured is avoided; moreover, the path is a row of a plurality of valve holes and transverse through holes which are arranged side by side, so that the situation that a water seepage path is cut off in advance due to unexpected blocking of a single pipeline when the outer wall of the basement of the next layer is grouted is avoided, and the working stability is higher.
As still further preferable, the valve core is wrapped with a layer of elastic rubber film, and the elastic rubber film is closely adhered to the inner wall of the steel sleeve pipe; therefore, the resistance of the rotation of the valve core can be increased, the stability of the on-off state of a water seepage path is ensured, the gap between the valve core and the inner wall of the steel sleeve pipe can be filled, the hidden danger of water leakage is further reduced, and the seepage stopping effect of the upper layer of basement outer wall after casting is improved.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of a waterproof structure at a construction joint of a laminated outer wall of a basement according to the present utility model.
Fig. 2 is a schematic view of the structure of fig. 1 with the retaining wall and the reinforcement cage of the upper basement wall removed.
Fig. 3 is an enlarged schematic view of the portion a in fig. 2.
Fig. 4 is a schematic diagram of the semi-sectional structure of fig. 3.
Fig. 5 is a schematic structural view of example 2 of the waterproof structure at the construction joint of the superimposed outer wall of the basement according to the present utility model.
Fig. 6 is an enlarged schematic view of the portion B in fig. 5.
Fig. 7 is an exploded construction diagram of the waterproof construction example 2.
The basement outer wall structure comprises a basement outer wall 1, a basement outer wall 2, a water stopping steel plate 3, a supporting retaining wall 4, a reinforcement cage of the basement outer wall on the upper layer, a steel sleeve 5, a steel sleeve 6, a transverse through hole 7, a valve core 8, a handle 9, a rubber plug 10, a valve hole 11, an inner pin hole 12, a pin 13, a first group of outer pin holes 14 and a second group of outer pin holes.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
As shown in fig. 1 to 4, an embodiment 1 of the waterproof structure at the construction joint of the laminated outer wall of the basement of the present utility model comprises a next layer of basement outer wall 1 and a water-stop steel plate 2 which have been poured. The lower half part of the water stop steel plate 2 is positioned in the concrete of the outer wall 1 of the basement of the next layer, and is embedded in the concrete when the concrete of the outer wall 1 of the basement of the next layer is poured; the upper half part of the water stop steel plate 2 is protruded above the interface of the top of the outer wall 1 of the basement of the next layer. The basement outer wall is poured layer by layer in batches by leaning on the supporting and retaining wall 3 of the foundation pit, and after the concrete of the basement outer wall 1 of the next layer is poured, a reinforcement cage 4 of the basement outer wall of the first layer is bound on the interface of the top of the basement outer wall.
The water-stopping steel plate 2 is provided with an upward opening vertical groove, an upward opening vertical steel sleeve 5 is welded in the vertical groove in a sealing way, and a transverse through hole 6 for leading accumulated water in the outer side area of the water-stopping steel plate 2 to be led into a foundation pit is formed in the wall of the steel sleeve 5. The steel sleeve 5 is also internally provided with a valve core 7 for sealing and isolating the transverse through hole 6.
The valve core 7 has a preferable structure that the steel sleeve 5 is provided with an internal thread, the top end of the valve core 7 is provided with a handle 8, the middle section of the valve core 7 is provided with an external thread, and the external thread of the valve core 7 is screwed with the internal thread of the steel sleeve 5. The lateral through hole 6 is closed when the spool 7 is screwed to the lower limit point, and the lateral through hole 6 is turned on when the spool 7 is screwed to other points above the lower limit point. It will be appreciated that the lower end of the spool 7 directly blocks the transverse through bore 6 when the spool 7 is rotated to the lower limit point.
Or, a rubber plug 9 is arranged in the steel sleeve 5; in the initial state, the diameter of the rubber plug 9 is slightly larger than the inner diameter of the steel sleeve 5, for example, 1.05 times of the inner diameter of the steel sleeve, so that the rubber plug 9 is clamped at a position higher than the transverse through hole 6 in the pipe cavity of the steel sleeve 5, but is not clamped tightly, when the valve core 7 is screwed down, the clamped rubber plug 9 can be easily pressed down, when the valve core 7 is screwed to a lower limit point, the bottom end of the valve core 7 presses the rubber plug 9 against the bottom end plate of the steel sleeve 5, so that the rubber plug 9 is flattened, the diameter of the rubber plug 9 is changed to be 1.2 times of the inner diameter of the steel sleeve, and a better waterproof and seepage-proof effect is obtained.
As shown in fig. 5 to 7, the waterproof structure at the overlapping type outer wall construction joint of the basement of the present utility model is an embodiment 2 which is different from the previous embodiment only in the structure of the valve core 7. Specifically, the steel sleeve 5 has a plurality of transverse through holes 6, which are distributed on the wall of the steel sleeve 5 in a vertical row, and the valve core 7 is penetrated with a plurality of valve holes 10 in a row corresponding to the transverse through holes 6 one by one. The top end of the valve core 7 is provided with an inner pin hole 11, and the top end of the steel sleeve 5 is provided with two groups of mutually perpendicular outer pin holes. The waterproof structure further comprises a pin 12, each valve hole 10 being in communication with a corresponding transverse through hole 6 when the pin 12 locks the inner pin hole 11 and the first set of outer pin holes 13; when the valve core 7 is rotated by 90 degrees so that the inner pin holes 11 and the second set of outer pin holes 14 are opposite, the pins 12 lock the inner pin holes 11 and the second set of outer pin holes 14, and each valve hole 10 is vertically blocked from the corresponding transverse through hole 6. The valve core 7 is wrapped with an elastic rubber film, and the elastic rubber film is closely adhered to the inner wall of the steel sleeve 5, so that the gap between the valve core 7 and the inner wall of the steel sleeve 5 is filled, and the hidden danger of water leakage is further reduced.
Claims (5)
1. A waterproof structure of a superposed outer wall construction joint of a basement comprises a lower layer of basement outer wall and a water-stopping steel plate, wherein the lower half part of the water-stopping steel plate is pre-embedded in the concrete of the basement outer wall of the lower layer, and the upper half part of the water-stopping steel plate protrudes upwards from the interface at the top of the basement outer wall of the lower layer; the method is characterized in that: the water-stopping steel plate is provided with a vertical groove with an upward opening, a vertical steel sleeve with an upward opening is welded in the vertical groove in a sealing way, and a transverse through hole for leading accumulated water in the outer side area of the water-stopping steel plate to be led inwards is formed in the wall of the steel sleeve; and a valve core for sealing and isolating the transverse through hole is also arranged in the steel sleeve.
2. The waterproof structure at the overlapping type outer wall construction joint of the basement according to claim 1, wherein: the steel sleeve is provided with an internal thread, the top end of the valve core is provided with a handle, the middle section of the valve core is provided with an external thread, the external thread of the valve core is screwed with the internal thread of the steel sleeve, when the valve core is screwed to the lower limit point position, the transverse through hole is closed, and when the valve core is screwed to other point positions, the transverse through hole is communicated.
3. The waterproof structure at the overlapping type outer wall construction joint of the basement according to claim 2, wherein: a rubber plug is arranged in the steel sleeve; in the initial state, the rubber plug is clamped at a position higher than the transverse through hole in the pipe cavity of the steel sleeve, and when the valve core rotates to the lower limit point, the bottom end of the valve core presses the rubber plug down to tightly press against the bottom end plate of the steel sleeve.
4. The waterproof structure at the overlapping type outer wall construction joint of the basement according to claim 1, wherein: the valve core is communicated with a plurality of valve holes in a row corresponding to the transverse through holes one by one; the top end of the valve core is provided with an inner pin hole, and the top end of the steel sleeve is provided with two groups of mutually perpendicular outer pin holes; the waterproof structure further comprises a pin, and when the pin locks the inner pin hole and the first group of outer pin holes, each valve hole is communicated with the corresponding transverse through hole; when the pin locks the inner pin bore and the second set of outer pin bores, each valve bore is vertically blocked from the corresponding transverse through bore.
5. The waterproof structure at the overlapping type outer wall construction joint of the basement according to claim 4, wherein: the valve core is wrapped with an elastic rubber film, and the elastic rubber film is closely adhered to the inner wall of the steel sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151471.XU CN220565281U (en) | 2023-08-10 | 2023-08-10 | Waterproof structure at construction joint of overlapped outer wall of basement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151471.XU CN220565281U (en) | 2023-08-10 | 2023-08-10 | Waterproof structure at construction joint of overlapped outer wall of basement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220565281U true CN220565281U (en) | 2024-03-08 |
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ID=90087932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322151471.XU Active CN220565281U (en) | 2023-08-10 | 2023-08-10 | Waterproof structure at construction joint of overlapped outer wall of basement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220565281U (en) |
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2023
- 2023-08-10 CN CN202322151471.XU patent/CN220565281U/en active Active
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