CN215715579U - Waterproof structure of longitudinal construction joint of top plate of subway station - Google Patents
Waterproof structure of longitudinal construction joint of top plate of subway station Download PDFInfo
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- CN215715579U CN215715579U CN202121413408.3U CN202121413408U CN215715579U CN 215715579 U CN215715579 U CN 215715579U CN 202121413408 U CN202121413408 U CN 202121413408U CN 215715579 U CN215715579 U CN 215715579U
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Abstract
The utility model provides a subway station top plate longitudinal construction joint waterproof structure, which comprises a station top plate, a longitudinal construction joint, a waterproof coating, a water swelling water stop glue, a water swelling water stop strip, a grouting pipe and a water receiving box, wherein the section of the longitudinal construction joint is set to be a non-plane step-shaped structure, at least one water blocking surface is arranged along the section direction, water seepage is blocked by the water blocking surface, waterproof coating, the water swelling water stop glue and the water swelling water stop strip are combined to carry out waterproof treatment on the longitudinal construction joint of the top plate, the grouting pipe is embedded, six measures are adopted to improve the waterproof capability of the longitudinal construction joint of the top plate of the station top plate, the phenomenon of the crack of the waterproof structure of the station is avoided, meanwhile, the water receiving box is adopted to carry out receiving and guiding and discharging treatment on the water seepage water of the station top plate, the seepage water is guided into a drainage wall ditch, and the seepage water is prevented from dripping onto pedestrians, the influence on station operation caused by maintenance of the closed station is avoided, and the normal operation of the subway is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of underground space waterproofing, and particularly relates to a waterproof structure for a longitudinal construction joint of a top plate of a subway station.
Background
Subway stations are often arranged at intersections with dense population, when the stations are constructed by open excavation, the urban main roads are occupied more, the influence on road traffic is larger, the occupied time of the roads is shortened for reducing the traffic jam condition, the pollution to the surrounding environment is reduced, and the application of a cover-excavation reverse construction method in subway engineering is more and more common. Therefore, it is more and more important to ensure the waterproof effect of the covered and excavated top-down station, wherein the waterproofing of joints such as construction joints, deformation joints and the like plays a crucial role in the whole station waterproof system, particularly in the roof construction joints, and because the construction joints are the joints formed between the concrete poured in the first and the later stages due to the sectional pouring in the concrete pouring process, the water seepage phenomenon is more likely to occur. And because the construction joints are strip-shaped, the leakage is mostly one, and the leakage stoppage is troublesome. At present, a sealing method and a drainage method are adopted for a water leakage treatment method aiming at a main structure of a subway station, the treatment is troublesome, the construction process is long, inconvenience is brought to pedestrians, and the normal work of the station is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waterproof structure of a longitudinal construction joint of a top plate of a reverse construction of a subway station, which has the advantages of simple structure, reasonable design, convenient construction and good waterproof effect.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a subway station is against making vertical construction joint waterproof construction of roof which characterized in that: the subway station roof construction method comprises a station roof, a longitudinal construction joint, a waterproof coating, a water-swelling water stop adhesive, a water-swelling water stop strip, a grouting pipe and a water receiving box, wherein the longitudinal construction joint is arranged along the length direction of a constructed subway station, and the station roof is divided into a post-cast roof and a pre-cast reverse-cast roof positioned on one side of the post-cast roof for performing casting in advance; the section of the longitudinal construction joint is a non-planar step-shaped structure, at least one water blocking surface is arranged along the direction of the section, and water seepage is blocked by the water blocking surface; a waterproof coating is coated on the surface of the longitudinal construction joint; at least one water-swelling water stop strip and at least one water-swelling water stop strip are arranged in the longitudinal construction joint; a grouting pipe is arranged at the lower part of the inner side of the rear pouring top plate, one end of the grouting pipe is fixed on the surface of the construction joint through a fastener, and the other end of the grouting pipe extends out of the bottom side of the rear pouring top plate; the bottom of station roof is provided with the water receiving box, the water receiving box intermediate position is located construction joint department, the opening orientation of water receiving box construction joint just covers the construction joint.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: wherein, the water receiver is U type or spill strip cell body, the cell body is the stainless steel sheet, and thickness is 1 ~ 6mm, and the width is 25cm ~ 40cm, and both wings width is 20mm ~ 30mm, the both wings of water receiver are fixed respectively along station length direction with the screw pour earlier contrary roof with pour the bottom of roof after with sealed glue, fixed back is sealed with sealed glue, the overlap joint length of water receiver is not less than 100mm, and the water receiver of upside is wrapped to the water receiver of downside, and the welding is closely knit between every section of water receiver.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: the bottom of the first pouring reverse roof and the bottom of the second pouring roof are provided with water dripping lines, and the two water dripping lines are located in the opening of the water receiving box.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: the length of the first pouring reverse roof is the same as that of the second pouring roof, the section of one side, facing the second pouring roof, of the first pouring reverse roof is in a step shape, the section, facing the second pouring roof, of one side of the first pouring reverse roof is in a step shape matched with the step shape of the first pouring reverse roof, the step number is two, the connecting surface between the two adjacent steps is a vertical surface, and the water blocking surface is a horizontal step surface in the middle of the section of the longitudinal construction joint.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: wherein, pour earlier and do every grade of roof against the contrary all set up one and meet water inflation sealing rubber in the position of step height, pour earlier and do every of roof against the contrary all set up one meet water inflation sealing rod on the surface of water, just meet water inflation sealing rod and be located the internal corner department of surface of water, meet water inflation sealing rubber and meet water inflation sealing rod and follow the length direction of roof is laid and the length of the two all with the length of roof is the same.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: the height of each step of the firstly poured reverse roof is 1/2 the thickness of the firstly poured reverse roof, and a water-swelling water-stop glue is stuck at the position 1/2 of the height of each step of the firstly poured reverse roof.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: the water-swelling sealing rod is of a slow swelling type.
Further, in the waterproof structure of the subway station reverse roof longitudinal construction joint provided by the utility model, the waterproof structure can also have the following characteristics: the grouting pipe is L-shaped, the grouting pipe is arranged along the longitudinal construction joint in the length direction, the top front end of the grouting pipe is fixed to the height of the second-level step of the top plate poured firstly, and the distance between the top of the grouting pipe and the middle horizontal step surface in the longitudinal construction joint is not smaller than 50 mm.
Further, in the subway station top plate longitudinal construction joint waterproof structure provided by the utility model, the waterproof structure also has the following characteristics: the waterproof coating is formed by uniformly brushing a layer of cement-based capillary crystalline waterproof coating on the surface of the longitudinal construction joint, and the surface of the longitudinal construction joint needs to be roughened and cleaned before being brushed with the waterproof coating.
The utility model has the beneficial effects that:
1. the utility model provides a subway station reverse roof longitudinal construction joint waterproof structure, which is characterized in that the section of a construction joint is set to be a non-plane step-shaped structure, a water blocking surface capable of blocking water seepage is arranged in the non-plane structure, a waterproof coating is coated on the surface of the construction joint, a water swelling and stopping adhesive is arranged at the height center of each step, a water swelling and stopping strip is arranged at the inner corner of the water blocking surface, concrete is poured into the formed construction joint through an embedded grouting pipe, and the waterproof capability of the station reverse roof longitudinal construction joint is improved through six measures, so that the phenomenon of the station waterproof structure crack is avoided.
2. The arrangement of the grouting pipe can also improve the compactness of concrete at the construction joint, improve the self-waterproof effect of concrete pouring at the construction joint and improve the pouring quality of the concrete at the construction joint.
3. The utility model adopts the stainless steel plate water receiving box to receive and guide the drainage treatment of the top plate leakage water, the water receiving box is a strip-shaped groove body, the overlapping can be wirelessly prolonged according to the requirement, the leakage water is guided into the drainage wall ditch, the leakage water is prevented from dripping on the body of a pedestrian, the influence of the maintenance of a closed station on the station operation is also avoided, and the normal operation of the subway is ensured.
Drawings
Fig. 1 is a schematic structural view of a waterproof structure of a longitudinal construction joint of a reverse roof of a subway station in the utility model.
Fig. 2 is a schematic structural view of a subway station top plate longitudinal construction joint before waterproof construction.
Fig. 3 is a schematic structural view of the subway station after the waterproof construction of the longitudinal construction joint of the reverse roof is completed.
Fig. 4 is a schematic structural view of the installed slip pipe of fig. 3.
In the drawings: 1-horizontal longitudinal beam, 2-temporary retaining wall, 3-temporary lattice column, 10-pouring top plate segment, 11-water-blocking surface, 20-pouring top plate segment, 30-longitudinal construction joint, 40-waterproof coating, 50-water-swelling water-stopping glue, 60-water-swelling water-stopping strip, 70-grouting pipe, 80-water-receiving box, 81-screw and 90-water-dropping line.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the following embodiments specifically describe the waterproof structure of the longitudinal construction joint of the reverse roof of the subway station in combination with the attached drawings.
As shown in fig. 1, a subway station is reverse to be done waterproof construction of roof longitudinal construction joint includes: firstly pouring a top plate 10 and then pouring a top plate 20, a longitudinal construction joint 30, a waterproof coating 40, a water-swelling water-stop glue 50, a water-swelling water-stop strip 60, a grouting pipe 70 and a water receiving box 80.
In the embodiment, the longitudinal construction joints 30 of the station roof are arranged along the length direction of the station, and the longitudinal construction joints 30 of the station roof are divided into a first casting top plate 10 and a second casting top plate 20; the section of the longitudinal construction joint 30 is a non-planar structure, and a water blocking surface 11 is arranged along the direction of the section; the surface of the longitudinal construction joint 30 is coated with a waterproof coating 40; two water-swelling water-stop glues 50 and one water-swelling water-stop strip 60 are arranged in the longitudinal construction joint 30; the lower part of the inner side of the rear casting top plate 20 is provided with a grouting pipe 70, one end of the grouting pipe 70 is fixed on the surface of the longitudinal construction joint 30 through a fastener, and the other end extends out of the bottom side of the rear casting top plate 20.
In this embodiment, the water receiving box 80 is disposed at the bottom of the first casting roof 10 and the second casting roof 20, the middle position of the water receiving box 80 is located at the longitudinal construction joint 30, and the opening of the water receiving box 80 faces the construction joint. Specifically, water receiver 80 is U type banding cell body, the cell body is the stainless steel sheet, thickness is 1 ~ 6mm, the width is 25cm ~ 40cm, both wings width is 20mm ~ 30mm, the both wings of water receiver 80 are fixed respectively with screw 81 at interval 300mm along station length direction and pour roof 10 earlier and pour the bottom of roof 20 afterwards, sealed with sealed glue after fixed, the overlap joint length of water receiver 80 is greater than 100mm, the water receiver of upside is wrapped to the water receiver of downside, the welding is closely knit between every section of water receiver.
In this embodiment, the bottom of the first casting roof 10 and the bottom of the second casting roof 20 are both provided with two water dripping lines 90, and the two water dripping lines 90 are both located in the opening of the water receiving box 80.
In this embodiment, one side of the first poured reverse roof 10 facing the second poured roof 20 is step-shaped, one side of the second poured roof 20 facing the first poured reverse roof 10 is step-shaped matched with the step-shaped of the first poured reverse roof 10, the step number is two, the connecting surface between two adjacent steps is a vertical surface, and the water blocking surface 11 is a horizontal step surface in the middle of the section of the longitudinal construction joint 30.
Further, the height of each step of the first poured reverse roof 10 is 1/2 the thickness h of the first poured reverse roof 10, a water-swelling water stop glue 50 is arranged at each position 1/2 of the height of each step, a slow-swelling water stop rod 60 is arranged at the inner corner of the water stop surface 11, the water-swelling water stop glue 50 and the water stop rod 60 are arranged along the length direction of the roof, and the length of the water stop glue and the length of the water stop rod 60 are the same as the length of the roof.
In this embodiment, the grouting pipe 70 is "L" shaped, the grouting pipe 70 is disposed along the longitudinal construction joint 30, the top front end of the grouting pipe 70 is fixed at the height of the second step of the first-poured reverse roof 10, and the distance d from the top of the grouting pipe 70 to the middle horizontal step surface in the longitudinal construction joint 30 is not less than 50 mm.
In this embodiment, a layer of cement-based capillary crystalline waterproof paint is uniformly coated on the surface of the longitudinal construction joint 30, and before the waterproof paint is coated on the joint surface, the joint surface needs to be roughened and cleaned.
The specific application example is that station positions are arranged along the north-south direction of a constructed station, the length of a longitudinal construction joint of a reverse roof of the station is about 300m, the width of a roof on the west side of the station is 7 m-9 m, the reverse roof is a reverse roof, a horizontal longitudinal beam 1, a retaining wall 2 and a temporary lattice column 3 are arranged in the range of a first pouring reverse roof 10 in early construction, one end of the first pouring reverse roof 10 is connected with the horizontal longitudinal beam 1, the first pouring reverse roof 10 is waterproof and adopts an asphalt waterproof coiled material, and the structure of the first pouring reverse roof 10 after construction is shown in figure 2; before the top plate 20 is poured, the construction joint surface is roughened and cleaned, and after no open water exists, a layer of waterproof coating is uniformly coated to form a waterproof coating 40; then respectively sticking a water-swelling water stop glue 50 at the center of each step height, sticking a water-swelling water stop strip 60 at the inner corner of the horizontal water blocking surface 11, performing base surface treatment on the top plate 10 poured in advance before sticking, cleaning the surface without oil stain, honeycomb, sand and the like, keeping the base surface solid and flat, drying and cleaning, performing temporary covering protection after sticking, preventing pollution and damage, avoiding contact with water, and finishing the waterproof construction of the longitudinal construction joint 30, wherein the structure is shown in figure 3; when the top plate 20 is poured later, the grouting pipe 70 is pre-buried, one end of the grouting pipe 70 is fixed on the height of the second step of the top plate 10 poured earlier through a fastener, the other end of the grouting pipe extends out of the bottom side of the top plate 20 poured later, and the structure of the installed grouting pipe 70 is as shown in fig. 4; after the top plate 20 is poured, the water receiving box 80 is arranged at the bottom of the top plate 10 and the bottom of the top plate 20, and the structure of the water receiving box 80 after the top plate 20 is poured is shown in fig. 1.
According to the utility model, the section of the longitudinal construction joint 30 is set to be a non-plane step-shaped structure, at least one water blocking surface is arranged along the section direction, water seepage is blocked through the water blocking surface 11, waterproof coating 40, water swelling water stop glue 50 and water swelling water stop strip 60 are adopted to carry out waterproof treatment on the longitudinal construction joint 30 of the station top plate, and the pouring pipe 70 is embedded in a matched manner, so that the waterproof capability of the longitudinal construction joint of the station top plate is improved, the phenomenon of crack of the waterproof structure of the station is avoided, meanwhile, the stainless steel plate water receiving box 80 is adopted to carry out receiving, guiding and discharging treatment on the leaked water, the leaked water is guided into the drainage wall channel, the leaked water is prevented from dripping onto a pedestrian, the influence of maintenance on the station operation is avoided, and the normal operation of the subway is ensured.
The above embodiments are merely preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (9)
1. The utility model provides a subway station is against making vertical construction joint waterproof construction of roof which characterized in that: the waterproof structure comprises a station top plate, a longitudinal construction joint, a waterproof coating, a water-swelling water stop glue, a water-swelling water stop strip, a grouting pipe and a water receiving box; the longitudinal construction joints are arranged along the length direction of a constructed subway station, and the station top plate is divided into a post-pouring top plate and a first-pouring reverse top plate which is positioned on one side of the post-pouring top plate and is poured in advance; the section of the longitudinal construction joint is a non-planar step-shaped structure, at least one water blocking surface is arranged along the direction of the section, and water seepage is blocked by the water blocking surface; a waterproof coating is coated on the surface of the longitudinal construction joint; at least one water-swelling water stop strip and at least one water-swelling water stop strip are arranged in the longitudinal construction joint; a grouting pipe is arranged at the lower part of the inner side of the rear pouring top plate, one end of the grouting pipe is fixed on the surface of the construction joint through a fastener, and the other end of the grouting pipe extends out of the bottom side of the rear pouring top plate; the bottom of station roof is provided with the water receiving box, the water receiving box intermediate position is located construction joint department, the opening orientation of water receiving box construction joint just covers the construction joint.
2. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 1, wherein:
the water receiving box is U type or spill strip cell body, the cell body is the stainless steel sheet, and thickness is 1 ~ 6mm, and the width is 25cm ~ 40cm, and the both wings width is 20mm ~ 30mm, the both wings of water receiving box are fixed respectively along station length direction with the screw pour earlier contrary roof with pour the bottom of roof after, fixed back is sealed with sealed glue, the overlap joint length of water receiving box is not less than 100mm, and the water receiving box of upside is wrapped to the water receiving box of downside, and welding is closely knit between every section of water receiving box.
3. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 1, wherein:
the bottom of pouring the roof of making the contrary earlier with pour the roof after all is provided with the line that drips, two the line that drips all is located the opening of water receiving box.
4. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 1, wherein:
the length of the first pouring reverse roof is the same as that of the second pouring roof, the section of the first pouring reverse roof, which faces one side of the second pouring roof, is in a step shape, the section of the second pouring roof, which faces one side of the first pouring reverse roof, is in a step shape matched with the step shape of the first pouring reverse roof, the step number is two stages, the connecting surface between the two adjacent stages is a vertical surface, and the water blocking surface is a horizontal step surface in the middle of the section of the longitudinal construction joint.
5. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 4, wherein:
the water-swelling water-stop strip is arranged on the water-blocking surface, the water-swelling water-stop strip is located at an inner corner of the water-blocking surface, the water-swelling water-stop strip is arranged along the length direction of the top plate, and the lengths of the water-swelling water-stop strip and the water-swelling water-stop strip are the same as the length of the top plate.
6. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 4, wherein:
the height of each step of the firstly poured reverse roof is 1/2 the thickness of the firstly poured reverse roof, and a water-swelling water-stop glue is stuck at the position 1/2 of the height of each step of the firstly poured reverse roof.
7. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 1, wherein:
the water-swelling sealing rod is of a slow swelling type.
8. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 1, wherein:
the slip casting pipe is "L" type, the slip casting pipe is followed vertical construction joint leads to long direction and sets up, the top front end of slip casting pipe is fixed in pour earlier on the second level step height of contrary roof of doing, the top distance of slip casting pipe the distance of middle horizontal step face is not less than 50mm in the vertical construction joint.
9. The subway station top-down roof longitudinal construction joint waterproof structure as claimed in claim 1, wherein:
the waterproof coating is formed by uniformly brushing a layer of cement-based capillary crystalline waterproof coating on the surface of the longitudinal construction joint, and the surface of the longitudinal construction joint needs to be roughened and cleaned before being brushed with the waterproof coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121413408.3U CN215715579U (en) | 2021-06-24 | 2021-06-24 | Waterproof structure of longitudinal construction joint of top plate of subway station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121413408.3U CN215715579U (en) | 2021-06-24 | 2021-06-24 | Waterproof structure of longitudinal construction joint of top plate of subway station |
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| CN215715579U true CN215715579U (en) | 2022-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718122A (en) * | 2022-03-16 | 2022-07-08 | 中国五冶集团有限公司 | Method for anti-seepage treatment of new and old structure underground corridor foundation connection construction joint |
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2021
- 2021-06-24 CN CN202121413408.3U patent/CN215715579U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718122A (en) * | 2022-03-16 | 2022-07-08 | 中国五冶集团有限公司 | Method for anti-seepage treatment of new and old structure underground corridor foundation connection construction joint |
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