CN220080027U - Structure is handled to crossing node of interim stand of foundation ditch and bottom plate - Google Patents
Structure is handled to crossing node of interim stand of foundation ditch and bottom plate Download PDFInfo
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- CN220080027U CN220080027U CN202320770191.4U CN202320770191U CN220080027U CN 220080027 U CN220080027 U CN 220080027U CN 202320770191 U CN202320770191 U CN 202320770191U CN 220080027 U CN220080027 U CN 220080027U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003292 glue Substances 0.000 claims abstract description 14
- 238000011282 treatment Methods 0.000 claims abstract description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 239000004588 polyurethane sealant Substances 0.000 claims description 4
- 239000002998 adhesive polymer Substances 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 239000003673 groundwater Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 5
- 239000011241 protective layer Substances 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Abstract
The utility model provides a processing structure for an intersection node of a temporary upright post and a bottom plate of a foundation pit. The treatment structure comprises a hole reserved at the intersection part of the basement bottom plate and the concrete temporary upright post, a dewatering well and a waterproof structure, wherein the dewatering well is arranged in the reserved hole, is arranged in the area between the reserved hole and the concrete temporary upright post, and extends below the bottom plate cushion layer; the waterproof structure comprises a hole middle waterproof structure and a plurality of layers of waterproof coiled materials paved on the bottom surface of the reserved hole, and the hole middle waterproof structure comprises slow expansion type water stop glue and a pre-buried grouting pipe which are arranged in the middle of the reserved hole; the end parts of the transverse main ribs of the basement bottom plate and the longitudinal main ribs of the bottom plate, which are adjacent to the reserved holes, are provided with connectors. The utility model ensures firm connection between new concrete and old concrete through the embedded bar connector, ensures that the construction quality of the node is not affected by the groundwater level through arranging the dewatering well, and performs a plurality of waterproof treatments at the construction joint and the steel sleeve to ensure no leakage after the sealing of the reserved hole is finished.
Description
Technical Field
The utility model relates to the field of geotechnical engineering construction, in particular to a processing structure for an intersection node of a temporary upright post and a bottom plate of a foundation pit.
Background
With the vigorous development of the urban process, the number of old urban renovation and update projects is greatly increased, an internal supporting system is generally adopted in a foundation pit supporting mode in order to reduce the influence of foundation pits on surrounding buildings and roads, temporary upright posts of the foundation pit are mainly used for supporting internal supporting beams, and the treatment of nodes at the intersection of the upright posts and a basement bottom plate is a serious difficulty in the projects.
In the construction process, the upright post can penetrate through the basement bottom plate and the multi-layer floor slab, the upright post can be removed after the basement structure is constructed, the greatest difficulty of the upright post is the water resistance of the exposed joint and the connection treatment of new and old concrete, and the position needs to be considered as a weak link of the water resistance construction, so that an economic and practical node construction treatment scheme is necessary to be found, and the construction level of foundation pit engineering is improved to a certain extent.
Disclosure of Invention
The utility model aims to provide a processing structure for a joint between a temporary upright post and a bottom plate of a foundation pit, which can effectively improve the waterproof and concrete connection stability of the joint between the bottom plate structure of a basement and the upright post after the temporary upright post is removed.
In order to achieve the above purpose, the utility model provides a processing structure of a joint between a foundation pit temporary upright and a bottom plate, which comprises a basement bottom plate and a concrete temporary upright, wherein the concrete temporary upright is disconnected at a position penetrating the basement bottom plate, a section of the concrete temporary upright is chiseled below the bottom surface of a bottom plate cushion layer, the processing structure comprises a reserved hole reserved at the intersection part of the basement bottom plate and the concrete temporary upright, a dewatering well arranged in the reserved hole, and a waterproof structure at the reserved hole, wherein the area of the reserved hole is larger than the cross-sectional area of the concrete temporary upright, the dewatering well is arranged in an area between the reserved hole and the concrete temporary upright, and the dewatering well extends below the bottom plate cushion layer; the waterproof structure comprises a hole middle waterproof structure and a plurality of layers of waterproof coiled materials paved on the bottom surface of the reserved hole, the hole middle waterproof structure comprises slow expansion type water stop glue and a pre-buried grouting pipe which are arranged in the middle of the reserved hole, and the upper part of the pre-buried grouting pipe extends to above the top surface of the basement bottom plate; the basement bottom plate comprises a bottom plate transverse main rib, a bottom plate longitudinal main rib and bottom plate concrete, and connectors are arranged at the ends, adjacent to the reserved holes, of the bottom plate transverse main rib and the bottom plate longitudinal main rib.
The utility model further adopts the technical scheme that: the waterproof coiled material is paved between the fine stone concrete protective layer and the bottom plate cushion layer, comprises an upper waterproof coiled material and a lower reinforced waterproof coiled material, a middle-layer bottom plate inner waterproof coiled material joint is reserved between the upper waterproof coiled material and the lower reinforced waterproof coiled material, two ends of the upper waterproof coiled material are overlapped with the middle-layer bottom plate inner waterproof coiled material joint, the overlapping length is not less than 400mm, and the lower reinforced waterproof coiled material is positioned below the overlapping parts of the two ends of the upper waterproof coiled material and the middle-layer bottom plate inner waterproof coiled material joint.
The utility model has the preferable technical scheme that: a steel sleeve with the outer diameter matched with the inner diameter of the dewatering well is placed in the dewatering well, the top of the steel sleeve is positioned 200mm below the top surface of the basement bottom plate, a steel sleeve is installed on the top of the steel sleeve, the diameter of the steel sleeve is smaller than that of the steel sleeve, the length of the steel sleeve is not smaller than 200mm, and the steel sleeve are welded and connected through a flange plate or a gate valve; a small submersible pump is placed in the steel sleeve, and control water is located below the bottom plate cushion layer.
The utility model has the preferable technical scheme that: the size of the slow expansion type water stop glue is 15mm multiplied by 8mm, and the slow expansion type water stop glue and the grouting pipe are fixed in the middle of the inner wall of the reserved hole.
The utility model has the preferable technical scheme that: and the section of the concrete temporary upright post is chiseled to 400mm below the bottom surface of the cushion layer.
The utility model has the preferable technical scheme that: the reserved holes are square, the side length is not smaller than 1.5 times of the pile diameter of the upright post piles, and the edges of the reserved holes are buried into connectors according to the specification and the number of reinforcing steel bars at the upper layer and the lower layer of the basement bottom plate.
The utility model has the preferable technical scheme that: the thickness of each layer of waterproof coiled material is not less than 4mm, and the reserved length of the waterproof coiled material joint in the middle layer bottom plate is at least 100mm; the waterproof coiled material adopts self-adhesive polymer modified asphalt polyester tire waterproof coiled material.
The utility model has the preferable technical scheme that: the preformed hole dewatering well adopts a geological drilling machine to drill holes with the diameter of 150mm and the depth of 2-4m below the basement bottom plate; the steel sleeve has an outer diameter of 150mm and a length of 3.5 to 4.5m.
The utility model has the preferable technical scheme that: the flexible waterproof layer is bonded to the outer wall of the lower part of the steel sleeve through a double-sided self-adhesive tape before pouring, a steel plate skirt water stop belt is welded at the position of the steel sleeve, which is positioned in the middle of a basement bottom plate, and a slow expansion type water stop adhesive is constructed at a welding seam; the opening of the steel sleeve is cut off to at least 20mm below the basement bottom plate before grouting, and a single-component polyurethane sealant waterproof layer is arranged at the opening.
Compared with the prior art, the utility model has the following characteristics and beneficial effects:
the utility model forms a rectangular post-pouring area at the joint of the upright post pile and the basement bottom plate, optimizes the connection relation between the concrete temporary upright post and the basement bottom plate steel bar, and ensures firm connection between new and old concrete through the embedded steel bar connector; through setting up dewatering well pump drainage groundwater, guarantee node construction quality and not influenced by groundwater level, and the suction pump can take out repetitious usage, through carrying out multichannel waterproofing in construction joint and steel bushing department, guarantee that the reservation hole seals the back and does not have the seepage after finishing.
Drawings
FIG. 1 is a schematic plan view of a floor hole process of the present utility model;
FIG. 2 is a schematic cross-sectional view of a floor hole process of the present utility model;
FIG. 3 is a cross-sectional view of AA in FIG. 1;
fig. 4 is a schematic drawing showing the penetration of the steel casing of the dewatering well through the waterproof layer.
In the figure: 1-a concrete temporary upright post, 2-a reserved hole, 3-a connector, 4-a dewatering well, 5-slow expansion type water stop glue, 6-a basement bottom plate, 600-a bottom plate transverse main rib, 601-a bottom plate longitudinal main rib, 602-a bottom plate concrete, 7-a pre-buried grouting pipe, 8-a bottom plate cushion layer, 9-an upper waterproof coiled material, 10-a waterproof coiled material joint in a middle bottom plate, 11-a lower reinforced waterproof coiled material, 12-a fine stone concrete protective layer, 13-a steel sleeve, 14-a flange plate or a gate valve, 15-a small submersible pump, 16-a flexible waterproof layer, 17-a double-sided self-adhesive tape, 18-a steel plate skirt edge water stop belt, 19-slow expansion type water stop glue, 20-a single-component polyurethane sealing glue waterproof layer and 21-steel sleeve.
Detailed Description
The utility model is further described below with reference to the drawings and examples. Figures 1 to 4 are drawings of embodiments, drawn in a simplified manner, for the purpose of clearly and concisely illustrating embodiments of the present utility model. The following technical solutions presented in the drawings are specific to embodiments of the present utility model and are not intended to limit the scope of the claimed utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.
The embodiment provides a processing structure of an intersection node of a foundation pit temporary upright and a bottom plate, which is shown in fig. 1 to 4, and comprises a basement bottom plate 6 and a concrete temporary upright 1, wherein the concrete temporary upright 1 is disconnected at a position penetrating through the basement bottom plate 6, and a section of the concrete temporary upright 1 is chiseled 400mm below the bottom surface of a bottom plate cushion layer 8; the treatment structure comprises a reserved hole 2 reserved at the intersection part of a basement bottom plate 6 and a concrete temporary upright 1, a dewatering well 4 arranged in the reserved hole 2 and a waterproof structure at the reserved hole 2, wherein the reserved hole 2 is square, the side length is not smaller than 1.5 times of the pile diameter of the concrete temporary upright 1, the basement bottom plate 6 comprises a bottom plate transverse main rib 600, a bottom plate longitudinal main rib 601 and bottom plate concrete 602, connectors 3 are arranged at the end parts of the bottom plate transverse main rib 600 and the bottom plate longitudinal main rib 601 adjacent to the reserved hole 2, the embedded number of the connectors 3 is according to the specification and the number of reinforcing steel bars at the upper layer and the lower layer of the basement bottom plate 6, if the embedded number of the connectors 3 is insufficient or damaged or missing in construction, reinforcing steel bars with the same specification can be planted, and the anchoring length of the reinforcing steel bars is 20d.
In the structure for processing the intersection node of the temporary upright post and the bottom plate of the foundation pit provided by the embodiment, as shown in fig. 1 to 4, the dewatering well 4 is arranged in the area between the reserved hole 2 and the temporary upright post 1 of the concrete, and the dewatering well 4 extends below the bottom plate cushion layer 8; the dewatering well 4 is drilled by adopting a geological drilling machine, the diameter is 150mm, and the depth is 2-4m below the basement bottom plate 6; a steel sleeve 21 with the diameter of 150mm is placed in the dewatering well 4, the length is about 4m, the top of the steel sleeve 20 is positioned 200mm below the top surface of the basement bottom plate 6, a steel sleeve 13 is arranged above the top, the diameter of the steel sleeve 13 is smaller than that of the steel sleeve 21, the length is not smaller than 200mm, and the steel sleeve 13 and the steel sleeve 21 are welded and connected through a flange plate or a gate valve 14; a small submersible pump 15 is placed in the steel sleeve 20, and the water level is controlled to be below the bottom plate cushion layer 8; the steel sleeve 21 is provided with a flexible waterproof layer 16 before pouring, the flexible waterproof layer 16 is adhered to the outer wall of the lower part of the steel sleeve 21 through a double-sided self-adhesive tape 17, a steel plate skirt water stop belt 18 is welded at the position of the steel sleeve 21 positioned in the middle of the basement bottom plate 6, and a slow expansion type water stop adhesive 19 is constructed at the welding seam; the opening of the steel sleeve 21 is cut off to at least 20mm below the basement bottom plate 6 before grouting, and a single-component polyurethane sealant waterproof layer 20 is arranged at the opening.
The embodiment provides a processing structure for intersecting nodes of a temporary upright post and a bottom plate of a foundation pit, as shown in fig. 1 to 4, the waterproof structure comprises a hole middle waterproof structure and a plurality of layers of waterproof coiled materials paved on the bottom surface of a reserved hole 2, the hole middle waterproof structure comprises a slow expansion type water stop glue 5 and a pre-buried grouting pipe 7 which are arranged in the middle of the reserved hole 2, and the upper part of the pre-buried grouting pipe 7 extends to above the top surface of the bottom plate 6 of the basement; the waterproof coiled material is paved between the fine stone concrete protective layer 12 and the bottom plate cushion layer 8, comprises an upper waterproof coiled material 9 and a lower reinforcing waterproof coiled material 11, a middle-layer bottom plate inner waterproof coiled material joint 10 is reserved between the upper waterproof coiled material 9 and the lower reinforcing waterproof coiled material 11, two ends of the upper waterproof coiled material 9 are partially overlapped with the middle-layer bottom plate inner waterproof coiled material joint 10, the overlapping length is not less than 400mm, and the lower reinforcing waterproof coiled material 11 is positioned below the overlapping parts of two ends of the upper waterproof coiled material 9 and the middle-layer bottom plate inner waterproof coiled material joint 10. The size of the slow expansion type water stop glue 5 is 15mm multiplied by 8mm, and the slow expansion type water stop glue 5 and the embedded grouting pipe 7 are fixed in the middle of the inner wall of the reserved hole 2. The section of the concrete temporary upright column 1 is chiseled to 400mm below the bottom surface of the bottom plate cushion layer 8. The thickness of each layer of waterproof coiled material is not less than 4mm, and the reserved length of the waterproof coiled material joint 10 in the middle layer bottom plate is at least 100mm; the waterproof coiled material adopts self-adhesive polymer modified asphalt polyester tire waterproof coiled material.
When the reserved hole 2 is plugged, the inner wall of the reserved hole 2 is required to be subjected to roughening treatment, the protective layer of the connector 3 is chiseled, the threaded connector is leaked and connected with the bottom plate reinforcing steel bar, the hole reinforcing steel bar is matched with the bottom plate reinforcing steel bar, the shrinkage compensation impervious concrete with one high strength grade is poured, and the steel sleeve 21 is poured; the steel sleeve 21 needs to be subjected to waterproof treatment before pouring, the flexible waterproof layer 16 is bonded to the duct piece through the double-sided self-adhesive tape 17, full adhesion and firmness are ensured, the steel plate skirt water stop belt 18 is welded in the middle of the basement bottom plate 6, and the slow expansion type water stop adhesive 19 is constructed at the welding seam; after the concrete strength reaches the design requirement, the steel sleeve 21 is subjected to concrete plugging and grouting, and the small submersible pump 15 is taken out before grouting; the opening part of the steel sleeve 21 is cut off before grouting, the depth of the embedded concrete is not less than 20mm, the opening part adopts a single-component polyurethane sealant 20 to make detail waterproof, and the pipe body is backfilled with low-grade concrete;
the specific treatment process of the intersecting node of the temporary upright post and the bottom plate of the foundation pit is as follows:
step one: a water pump is put into the reserved hole 2, and the water pump is taken out after the accumulated water is pumped down;
step two: chiseling the temporary upright columns 1 in the range of the bottom plate until 400mm below the bottom surface of the bottom plate cushion layer 8;
step three: chiseling the inner wall of the reserved hole 2, chiseling the protective layer of the connector 3 to expose the threaded connector, and planting ribs according to the same specification if the connector is damaged or missing;
step four: drilling holes in the reserved holes 2 to serve as dewatering wells 4, wherein the depth of the holes is below a bottom plate cushion layer 8, and the depth is determined according to geological conditions below the bottom plate;
step five: a steel sleeve 21 with a corresponding size is put into the dewatering well 4, the top of the steel pipe is welded with a steel sleeve 13 through a flange or a gate valve 14, and the opening of the sleeve is waterproof;
step six: the flexible waterproof layer 16 is bonded on the pipe piece at the lower part of the steel sleeve 21, when the flexible waterproof layer 16 is provided with a water permeable material, the water permeable material is cut off, so that the main material is bonded with the pipe wall, and the bonding is full and firm;
step seven: the steel sleeve 21 is positioned in the middle of the basement bottom plate 6, a steel plate skirt water stop belt 18 is welded, and a slow expansion water stop adhesive is constructed at the welding seam;
step eight: putting a small submersible pump 15 into the steel sleeve 21 for continuous dewatering, and controlling the groundwater level below the bottom surface of the cushion layer;
step nine: the waterproof coiled material is paved in the reserved hole 2 and is lapped with the reserved waterproof coiled material joint, the construction joint is treated by adopting slow expansion water stop glue, a grouting pipe is pre-buried, then the bottom plate reinforcing steel bar is connected with a connector, the reinforcing steel bar in the hole is the same as the bottom plate reinforcing steel bar, the compensating shrinkage impervious concrete with one high strength grade is poured, and the steel sleeve is poured.
Step ten: and after the strength of the concrete reaches the strength required by design, carrying out concrete plugging and grouting on the steel sleeve, and taking out the water pump before grouting.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a structure is handled to crossing node of foundation ditch temporary upright and bottom plate, includes basement bottom plate (6) and concrete temporary upright (1), concrete temporary upright (1) break off in the position department that runs through basement bottom plate (6), and the section chisel is below bottom plate bed course (8) bottom surface, its characterized in that: the treatment structure comprises a reserved hole (2) reserved at the intersection part of a basement bottom plate (6) and a concrete temporary upright post (1), a dewatering well (4) arranged in the reserved hole (2) and a waterproof structure at the reserved hole (2), wherein the area of the reserved hole (2) is larger than the cross-sectional area of the concrete temporary upright post (1), the dewatering well (4) is arranged in the area between the reserved hole (2) and the concrete temporary upright post (1), and the dewatering well (4) extends below a bottom plate cushion layer (8); the waterproof structure comprises a hole middle waterproof structure and a plurality of layers of waterproof coiled materials paved on the bottom surface of the reserved hole (2), the hole middle waterproof structure comprises a slow expansion type water stop glue (5) and a pre-buried grouting pipe (7) which are arranged in the middle of the reserved hole (2), and the upper part of the pre-buried grouting pipe (7) extends to above the top surface of a basement bottom plate (6); the basement bottom plate (6) comprises a bottom plate transverse main rib (600), a bottom plate longitudinal main rib (601) and bottom plate concrete (602), and connectors (3) are arranged at the ends, adjacent to the reserved holes (2), of the bottom plate transverse main rib (600) and the bottom plate longitudinal main rib (601).
2. The structure for processing the intersection node of the temporary upright and the bottom plate of the foundation pit according to claim 1, wherein: the waterproof coiled material is characterized in that a fine stone concrete protection layer (12) and a bottom plate cushion layer (8) are arranged at the bottom of a basement bottom plate (6) and a reserved hole (2), the waterproof coiled material is paved between the fine stone concrete protection layer (12) and the bottom plate cushion layer (8), the waterproof coiled material comprises an upper waterproof coiled material (9) and a lower reinforcing waterproof coiled material (11), a middle-layer bottom plate inner waterproof coiled material joint (10) is reserved between the upper waterproof coiled material (9) and the lower reinforcing waterproof coiled material (11), two ends of the upper waterproof coiled material (9) are partially overlapped with the middle-layer bottom plate inner waterproof coiled material joint (10), the overlapping length is not less than 400mm, and the lower reinforcing waterproof coiled material (11) is positioned below the overlapping parts of the two ends of the upper waterproof coiled material (9) and the middle-layer bottom plate inner waterproof coiled material joint (10).
3. The structure for processing the intersecting node of the temporary upright and the bottom plate of the foundation pit according to claim 1 or 2, wherein: a steel sleeve (21) with the outer diameter matched with the inner diameter of the dewatering well (4) is placed in the dewatering well (4), the top of the steel sleeve (21) is located 200mm below the top surface of the basement bottom plate (6), a steel sleeve (13) is installed at the top of the steel sleeve (21), the diameter of the steel sleeve (13) is smaller than that of the steel sleeve (21), the length of the steel sleeve is not smaller than 200mm, and the steel sleeve (13) and the steel sleeve (21) are connected through a flange plate or a gate valve (14) in a welding mode; a small submersible pump (15) is placed in the steel sleeve (21), and control water is located below the bottom plate cushion layer (8).
4. The structure for processing the intersecting node of the temporary upright and the bottom plate of the foundation pit according to claim 1 or 2, wherein: the size of the slow expansion type water stop glue (5) is 15mm multiplied by 8mm, and the slow expansion type water stop glue (5) and the embedded grouting pipe (7) are fixed in the middle of the inner wall of the reserved hole (2).
5. The structure for processing the intersecting node of the temporary upright and the bottom plate of the foundation pit according to claim 1 or 2, wherein: the section of the concrete temporary upright post (1) is chiseled to 400mm below the bottom surface of the bottom plate cushion layer (8).
6. The structure for processing the intersecting node of the temporary upright and the bottom plate of the foundation pit according to claim 1 or 2, wherein: the reserved holes (2) are square, the side length is not smaller than 1.5 times of the pile diameter of the concrete temporary upright post (1), and the edges of the reserved holes (2) are buried with connectors (3) according to the specification and the quantity of the upper layer and the lower layer of reinforcing steel bars of the basement bottom plate (6).
7. The structure for processing the intersection node of the temporary upright and the bottom plate of the foundation pit according to claim 2, wherein: the thickness of each layer of waterproof coiled material is not less than 4mm, and the reserved length of the waterproof coiled material joint (10) in the middle layer bottom plate is at least 100mm; the waterproof coiled material adopts self-adhesive polymer modified asphalt polyester tire waterproof coiled material.
8. A structure for processing an intersecting node of a temporary foundation pit column and a bottom plate according to claim 3, wherein: the dewatering well (4) is drilled by adopting a geological drilling machine, the diameter is 150mm, and the depth is 2-4m below the basement bottom plate (6); the steel sleeve (21) has an outer diameter of 150mm and a length of 3.5 to 4.5m.
9. A structure for processing an intersecting node of a temporary foundation pit column and a bottom plate according to claim 3, wherein: the steel sleeve (21) is provided with a flexible waterproof layer (16) before pouring, the flexible waterproof layer (16) is adhered to the outer wall of the lower part of the steel sleeve (21) through a double-sided self-adhesive tape (17), a steel plate skirt water stop belt (18) is welded at the position of the steel sleeve (21) positioned in the middle of the basement bottom plate (6), and a slow expansion type water stop adhesive (19) is constructed at the welding seam; the opening of the steel sleeve (21) is cut off to at least 20mm below the basement bottom plate (6) before grouting, and a single-component polyurethane sealant waterproof layer (20) is arranged at the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320770191.4U CN220080027U (en) | 2023-04-10 | 2023-04-10 | Structure is handled to crossing node of interim stand of foundation ditch and bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320770191.4U CN220080027U (en) | 2023-04-10 | 2023-04-10 | Structure is handled to crossing node of interim stand of foundation ditch and bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220080027U true CN220080027U (en) | 2023-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320770191.4U Active CN220080027U (en) | 2023-04-10 | 2023-04-10 | Structure is handled to crossing node of interim stand of foundation ditch and bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220080027U (en) |
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2023
- 2023-04-10 CN CN202320770191.4U patent/CN220080027U/en active Active
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