CN210797663U - Post-cast strip structure for bottom plate of underground chamber - Google Patents
Post-cast strip structure for bottom plate of underground chamber Download PDFInfo
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- CN210797663U CN210797663U CN201921109022.6U CN201921109022U CN210797663U CN 210797663 U CN210797663 U CN 210797663U CN 201921109022 U CN201921109022 U CN 201921109022U CN 210797663 U CN210797663 U CN 210797663U
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Abstract
The utility model provides a post-cast strip structure of a basement bottom plate and a construction method thereof, which comprises a cushion layer, a V-shaped water stop steel plate, post-cast strip steel bars, a post-cast strip, a bottom plate steel bar mesh, a bottom plate and water stop; the center of the cushion layer is fixedly provided with a V-shaped water stop steel plate through a screw; post-cast steel bars are welded on the welding sections at the two sides of the V-shaped water stop steel plate, and the post-cast steel bars are attached to the top surface of the cushion layer and extend upwards along the downward concave slope surface of the inverted trapezoid; the vertical template is arranged on the welding section of the V-shaped water stop steel plate, post-cast strips are poured and cast on two sides of the template, and the post-cast strips cover two sides of the V-shaped water stop steel plate and steel bars of the post-cast strips; bottom plate steel bar meshes are arranged on the top surfaces of the cushion layer and the post-cast strip, and a bottom plate is poured and poured by taking the bottom plate steel piece meshes as a foundation; the middle part of the bottom plate is provided with a fracture corresponding to the inverted trapezoidal downward concave width of the cushion layer, and the center of the fracture section is embedded with water-stopping.
Description
Technical Field
The utility model relates to a building waterproof field especially relates to a basement bottom plate post-cast strip structure and construction method thereof.
Background
The application of post-cast strip construction technology in a construction site is very common, and the traditional post-cast strip laying mode is to pour post-cast strip concrete after the main structure construction is finished. The precipitation is required to be carried out continuously to ensure that the underground water level is kept below 500mm of the foundation, after the main body structure is finished, the post-cast strip concrete is cast, and the precipitation can be stopped when the concrete strength meets the design requirement, so that the total construction time is long; the traditional post-cast strip technology can increase the cost of engineering dewatering, destroy the waterproof layer of the bottom plate when the underground water pressure is strong, and cause the failure of the waterproof layer of the post-cast strip; because the post-cast steel bars and the construction joints are soaked in water for a long time to influence the construction quality of a subsequent concrete pouring process, the foundation pit cannot be backfilled in advance to influence the safety of foundation pit support and the early use of temporary land.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a basement bottom plate post-cast strip structure and construction method thereof, this structure adopts V shaped steel board multichannel to set up defences on the upstream face, and V shaped steel board is installed on the upstream face, prevents groundwater from flowing into the post-cast strip, and V type stagnant water steel board plays waterproof and flexible effect, and structural waterproof performance is good, reduces the cost of post-cast strip construction, prevents that the post-cast strip waterproof layer from damaging inefficacy.
In order to achieve the above object, the utility model adopts the following technical scheme: a post-cast strip structure of a bottom plate of an underground chamber and a construction method thereof comprise a cushion layer, a V-shaped water stop steel plate, a post-cast strip steel bar, a post-cast strip, a bottom plate steel bar mesh, a bottom plate and water stop; the cushion layer is of a plain concrete cushion layer structure, a section of inverted trapezoid is arranged in the middle of the cushion layer and is concave downwards, and a V-shaped water stop steel plate is fixedly arranged in the center of the concave downwards through a screw; the V-shaped water stop steel plate is a V-shaped through long steel plate with wing plates at two ends, welding sections with one ends turned upwards are arranged at two sides of the wing plates, and the opening of the V-shaped water stop steel plate faces the direction of the cushion layer; post-cast steel bars are welded on the welding sections at the two sides of the V-shaped water stop steel plate, and the post-cast steel bars are attached to the top surface of the cushion layer and extend upwards along the downward concave slope surface of the inverted trapezoid; the vertical template is arranged on the welding section of the V-shaped water stop steel plate, post-cast strips are poured and cast on two sides of the template, and the post-cast strips cover two sides of the V-shaped water stop steel plate and steel bars of the post-cast strips; bottom plate steel bar meshes are arranged on the top surfaces of the cushion layer and the post-cast strip, and a bottom plate is poured and poured by taking the bottom plate steel piece meshes as a foundation; the middle part of the bottom plate is provided with a fracture corresponding to the inverted trapezoidal downward concave width of the cushion layer, and the center of the fracture section is embedded with water-stopping.
Preferably, one end of the post-cast strip steel bar is embedded into the bottom plate for a length of not less than 300mm, and the post-cast strip steel bar is welded and connected with a single-layer bidirectional reinforcing bar, the diameter of the reinforcing bar is not less than 12mm, and the distance between the reinforcing bars is not more than 250 mm.
Preferably, a groove with the width of 50mm and the depth of 80mm is reserved on the top surface of each of the two sides of the post-cast strip.
Preferably, the V-shaped water stop steel plates are in lap welding with each other, and the lap welding length is not less than 50 mm.
A construction method of a post-cast strip of a bottom plate of an underground chamber comprises the following steps:
the method comprises the following steps: construction preparation, namely, carrying out technical scheme bottom-crossing, familiarizing the operation process flow, compiling drawing, transporting construction equipment and construction mechanical equipment and handling related procedures in advance;
step two: in order to ensure the smoothness and the flatness of the steel plate, accurate measurement and paying-off must be carried out before construction, and a steel plate positioning line is paid out on a cushion surface after a concrete cushion is poured;
step three: the manufactured V-shaped water stop steel plate is hoisted to the position of a post-pouring belt, the V-shaped water stop steel plate is placed according to a positioning line, water stop screws are arranged at four corners of the V-shaped water stop steel plate for fixation, the positions of the screws are subjected to rust prevention and water prevention treatment, and asphalt cement can be adopted for coating, so that the rust prevention and water prevention effects are achieved;
step four: the welding of the V-shaped water stop steel plate needs to survive in two times, when the welding is carried out for the first time, firstly, spot welding is carried out on the middle and the two ends, then, the welding is carried out from the middle to the two ends, after the welding is carried out for the first time, the coating is immediately knocked off by using a welding hammer, the positions with or without sand holes and welding leakage are checked, if welding needs to be carried out, repair welding is carried out for the second time, and the welding direction is opposite to that of the first time;
step five: performing rust-proof and water-proof treatment on the seam of the steel plate welding seam;
step six: laying and fixing the reinforcing ribs, wherein the reinforcing ribs are laid according to the positioning intervals, and the reinforcing ribs are laid synchronously with the bottom plate reinforcing steel bars and are bound and fixed or fixed by spot welding with the bottom plate reinforcing steel bars;
step seven: sequentially pouring a post-cast strip and a bottom plate;
step eight: fast and easy closing nets are laid on two sides and the ground, and are fixedly bound with nearby horizontal ribs by steel wires;
step nine: after the bottom plates on the two sides of the post-cast strip are poured, water retaining with the height of 100mm is built on the bottom plates on the two sides in time, and a wood plate is covered above the post-cast strip, so that garbage and open water are prevented from flowing in, and garbage cleaning work in the post-cast strip is reduced;
step ten: and after the post-cast strip and the bottom plate are maintained, the gap filling is finished at the fracture of the bottom plate.
The utility model has the advantages that: this structure adopts V shaped steel board multichannel to set up defences on the upstream face, and V shaped steel board is installed on the upstream face, prevents groundwater inflow post-cast strip, and V shaped stagnant water steel board plays waterproof and flexible effect, and structural waterproof performance is good, reduces the cost of post-cast strip construction, prevents that post-cast strip waterproof layer from damaging the inefficacy.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a bottom plate post-cast strip structure, fig. 2 is a schematic diagram of a V-shaped water stop steel plate structure, and fig. 3 is a schematic diagram of a post-cast strip steel rib structure.
Wherein: 1 is a cushion layer, 2 is a V-shaped water stop steel plate, 3 is a post-cast strip steel bar, 4 is a post-cast strip, 5 is a bottom plate steel bar mesh, 6 is a bottom plate, and 7 is water stop.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in the figure, the underground chamber bottom plate post-cast strip structure and the construction method thereof comprise a cushion layer 1, a V-shaped water stop steel plate 2, a post-cast strip steel bar 3, a post-cast strip 4, a bottom plate steel bar mesh 5, a bottom plate 6 and a water stop 7; the cushion layer 1 is of a plain concrete cushion structure, a section of inverted trapezoid is arranged in the middle of the cushion layer 1, and a V-shaped water stop steel plate 2 is fixedly arranged in the center of the lower recess through a screw; the V-shaped water stop steel plate 2 is a V-shaped through long steel plate with wing plates at two ends, welding sections with one ends turned upwards are arranged at two sides of the wing plates, and the opening of the V-shaped water stop steel plate 2 faces the direction of the cushion layer 1; the rear pouring steel bars 3 are welded on the welding sections at the two sides of the V-shaped water stop steel plate 2, and the rear pouring steel bars 3 are attached to the top surface of the cushion layer 1 and extend upwards along the inverted trapezoidal downward concave slope surface; an upright template is arranged on the welding section of the V-shaped water stop steel plate 2, post-cast strips 4 are poured and cast on two sides of the template, and the post-cast strips 4 cover two sides of the V-shaped water stop steel plate 2 and post-cast strip steel bars 3; the top surfaces of the cushion layer 1 and the post-cast strip 4 are provided with a bottom plate steel mesh 5, and a bottom plate 6 is poured and cast by taking the bottom plate steel mesh 5 as a foundation; a fracture is arranged in the middle of the bottom plate 6 corresponding to the inverted trapezoidal downward concave width of the cushion layer 1, and a water stop 7 is embedded in the center of the fracture section.
When the method is specifically implemented, one end of the post-cast steel bar 3 is embedded into the bottom plate 6 for a length not less than 300mm, and the post-cast steel bar 3 is welded and connected with a single-layer bidirectional reinforcing rib, the diameter of the reinforcing rib is not suitable to be less than 12mm, and the distance between the reinforcing ribs is not suitable to be greater than 250 mm.
In specific implementation, a groove with the width of 50mm and the depth of 80mm is respectively reserved on the top surfaces of the two sides of the post-cast strip 4.
In specific implementation, the V-shaped water stop steel plates 2 are in lap welding, and the lap welding length is not less than 50 mm.
A construction method of a post-cast strip structure of a bottom plate of an underground chamber comprises the following steps:
the method comprises the following steps: construction preparation, namely, carrying out technical scheme bottom-crossing, familiarizing the operation process flow, compiling drawing, transporting construction equipment and construction mechanical equipment and handling related procedures in advance;
step two: in order to ensure the smoothness and the flatness of the steel plate, accurate measurement and paying-off must be carried out before construction, and after the concrete cushion layer 1 is poured, steel plate positioning lines are paid out on the surface of the cushion layer 1;
step three: the manufactured V-shaped water stop steel plate 2 is hoisted to a post-pouring belt position, the V-shaped water stop steel plate 2 is placed according to a positioning line, water stop screws are arranged at four corners of the V-shaped water stop steel plate 2 for fixation, the screw positions are subjected to rust prevention and water prevention treatment, asphalt cement can be adopted for coating, and the rust prevention and water prevention effects are achieved;
step four: the welding of the V-shaped water stop steel plate 2 needs to be survived in two times, when the welding is carried out for the first time, firstly, spot welding is carried out on the middle and the two ends, then, the welding is carried out from the middle to the two ends, after the first time is finished, the coating is immediately knocked off by using a welding hammer, the positions with or without sand holes and welding leakage are checked, if welding needs to be carried out, repair welding is carried out for the second time, and the welding direction is opposite to that of the first time;
step five: performing rust-proof and water-proof treatment on the seam of the steel plate welding seam;
step six: laying and fixing the reinforcing ribs, wherein the reinforcing ribs are laid according to the positioning intervals, and the reinforcing ribs are laid synchronously with the bottom plate reinforcing steel bars and are bound and fixed or fixed by spot welding with the bottom plate reinforcing steel bars;
step seven: sequentially pouring a post-cast strip 4 and a bottom plate 6;
step eight: fast and easy closing nets are laid on two sides and the ground, and are fixedly bound with nearby horizontal ribs by steel wires;
step nine: after the bottom plates 6 on the two sides of the post-cast strip 4 are poured, water retaining with the height of 100mm is built on the bottom plates 6 on the two sides in time, and a wood plate is covered above the post-cast strip 4, so that garbage and open water are prevented from flowing in, and the garbage cleaning work in the post-cast strip 4 is reduced;
step ten: and after the post-cast strip 4 and the bottom plate 6 are maintained, the gap filling is finished at the fracture of the bottom plate 6.
Claims (4)
1. The utility model provides a basement bottom plate post-cast strip structure which characterized in that: comprises a cushion layer, a V-shaped water stop steel plate, post-cast strip steel bars, a post-cast strip, a bottom plate steel bar mesh, a bottom plate and water stop; the cushion layer is of a plain concrete cushion layer structure, a section of inverted trapezoid is arranged in the middle of the cushion layer and is concave downwards, and a V-shaped water stop steel plate is fixedly arranged in the center of the concave downwards through a screw; the V-shaped water stop steel plate is a V-shaped through long steel plate with wing plates at two ends, welding sections with one ends turned upwards are arranged at two sides of the wing plates, and the opening of the V-shaped water stop steel plate faces the direction of the cushion layer; post-cast steel bars are welded on the welding sections at the two sides of the V-shaped water stop steel plate, and the post-cast steel bars are attached to the top surface of the cushion layer and extend upwards along the downward concave slope surface of the inverted trapezoid; the vertical template is arranged on the welding section of the V-shaped water stop steel plate, post-cast strips are poured and cast on two sides of the template, and the post-cast strips cover two sides of the V-shaped water stop steel plate and steel bars of the post-cast strips; bottom plate steel bar meshes are arranged on the top surfaces of the cushion layer and the post-cast strip, and a bottom plate is poured and poured by taking the bottom plate steel piece meshes as a foundation; the middle part of the bottom plate is provided with a fracture corresponding to the inverted trapezoidal downward concave width of the cushion layer, and the center of the fracture section is embedded with water-stopping.
2. A subsurface chamber floor strip structure as claimed in claim 1 wherein: one end of the post-cast strip steel bar is embedded into the bottom plate, the length of the post-cast strip steel bar is not less than 300mm, a single-layer bidirectional reinforcing bar is welded and connected to the post-cast strip steel bar, the diameter of the reinforcing bar is not less than 12mm, and the distance between the reinforcing bars is not more than 250 mm.
3. A subsurface chamber floor strip structure as claimed in claim 1 wherein: and a groove with the width of 50mm and the depth of 80mm is reserved on the top surfaces of the two sides of the post-cast strip respectively.
4. A subsurface chamber floor strip structure as claimed in claim 1 wherein: the V-shaped water stop steel plates are in lap welding, and the lap welding length is not less than 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921109022.6U CN210797663U (en) | 2019-07-15 | 2019-07-15 | Post-cast strip structure for bottom plate of underground chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921109022.6U CN210797663U (en) | 2019-07-15 | 2019-07-15 | Post-cast strip structure for bottom plate of underground chamber |
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| Publication Number | Publication Date |
|---|---|
| CN210797663U true CN210797663U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921109022.6U Expired - Fee Related CN210797663U (en) | 2019-07-15 | 2019-07-15 | Post-cast strip structure for bottom plate of underground chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344447A (en) * | 2019-07-15 | 2019-10-18 | 广东电白建设集团有限公司 | A kind of basement bottom plate rear pouring tape structure and its construction method |
-
2019
- 2019-07-15 CN CN201921109022.6U patent/CN210797663U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344447A (en) * | 2019-07-15 | 2019-10-18 | 广东电白建设集团有限公司 | A kind of basement bottom plate rear pouring tape structure and its construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |