CN111749326A - Reverse construction basement side wall construction joint processing structure and processing method - Google Patents
Reverse construction basement side wall construction joint processing structure and processing method Download PDFInfo
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- CN111749326A CN111749326A CN202010767481.4A CN202010767481A CN111749326A CN 111749326 A CN111749326 A CN 111749326A CN 202010767481 A CN202010767481 A CN 202010767481A CN 111749326 A CN111749326 A CN 111749326A
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- side wall
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to a processing structure and a processing method for a side wall construction joint of a reverse basement, which comprises a concrete cushion layer, wherein a plurality of sleeves are symmetrically arranged in the concrete cushion layer, side wall vertical steel bars are inserted in the sleeves, a batten secondary keel is arranged between the side wall vertical steel bars, a plug template is arranged above the batten secondary keel, a clamping template is arranged outside the side wall vertical steel bars, and a joint and the sleeve of the side wall vertical steel bar are filled with backfill sand and covered between the clamping template and the batten secondary keel; a groove is arranged at the lower half section of the side wall, and concrete is poured in the groove; the middle part of the side wall is provided with a grouting pipe, and the inside and the outside of the side wall are both provided with water stop glue. The method can ensure the attaching compactness of the concrete at the construction joint and reduce the leakage probability at the construction joint of the side wall of the reverse construction basement.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a structure and a method for processing a construction joint of a side wall of a reverse basement.
Background
In the face of increasingly scarce urban land resources, the utilization of underground space is more and more emphasized in order to meet the urban development requirements. The basement structure is usually made by two ways of forward making and backward making. For subway projects, in order to ensure the quality of side wall molding, a steel template and a tripod bracket are combined to construct a single-side formwork. According to the design floor height not more than 7.6m, the basement structure adopts a steel mould tripod single-face formwork support to sequentially form the side wall, and the treatment operation of the construction joint is convenient, concise and reliable. For a large-space basement structure with a net height of more than 7.6m, the reverse construction of the underground structure side wall is considered from the construction working condition requirement, the excavation safety of a foundation pit, the construction process conversion of the horizontal support of the enclosure structure and the structure side wall and the moving convenience of a steel mould tripod support system. The processing difficulty of the reverse construction side wall joint is relatively high, the upper and lower segmented side wall steel bar connecting joints are protected, the concrete construction joint is reserved, and how to ensure the protection of the steel bar connecting joints by the poured concrete and the fitting compactness of the concrete at the upper and lower segmented side wall construction joints is a key control link about the use safety of the reverse construction side wall structure and the leakage of the basement side wall. .
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a structure and a method for processing a construction joint of a side wall of an inverted basement, aiming at the defects of the prior art, and the structure and the method can ensure the attaching compactness of concrete at the construction joint and reduce the leakage probability at the construction joint of the side wall of the inverted basement.
The technical scheme is as follows: the invention relates to a reverse construction basement side wall construction joint processing structure which comprises a concrete cushion layer, wherein a plurality of sleeves are symmetrically arranged in the concrete cushion layer, side wall vertical steel bars are inserted into the sleeves, a batten secondary keel is arranged between the side wall vertical steel bars, a plug template is arranged above the batten secondary keel, a clamping template is arranged outside the side wall vertical steel bars, and a joint and the sleeve of the side wall vertical steel bar are filled with backfill sand and covered between the clamping template and the batten secondary keel; a groove is arranged at the lower half section of the side wall, and concrete is poured in the groove; the middle part of the side wall is provided with a grouting pipe, and the inside and the outside of the side wall are both provided with water stop glue.
Furthermore, the plug template is made of a bamboo plywood with the thickness of 15mm-30mm, and the batten secondary keel is made of 50mm 10mm square wood.
Furthermore, the water stop glue is rainwater-swelling polyurethane water stop glue.
Furthermore, the water stop glue is arranged at a position 100mm away from the inner and outer surfaces of the side wall.
Furthermore, the grouting pipe is a full-section grouting pipe.
A processing method of a reverse construction basement side wall construction joint processing structure comprises the following steps:
step a, reinforcing the inner side of the vertical steel bar of the side wall:
step a1, tamping natural soil foundations at the lower parts of the side walls, and pouring concrete cushions according to the widths of the side walls;
step a2, processing a plug template and a batten secondary keel according to the thickness of the side wall and the row spacing of the vertical steel bars of the side wall;
step a3, inserting the side wall vertical steel bars into sleeves preset in the concrete cushion, and inserting and installing plug templates and batten secondary keels in the process of installing the side wall vertical steel bars;
b, reinforcing the outer side of the vertical steel bar of the side wall: clamping the joint of the side wall vertical steel bar by utilizing the clamping template attached to the outer side of the root part of the side wall vertical steel bar;
step c, protecting the joint of the vertical steel bar of the side wall: filling and covering the vertical steel bar joints and the sleeves of the side walls with backfill sand;
step d, concrete pouring treatment at the construction joint: the upper and lower sections of concrete are connected through a Z-shaped interface construction joint, and the lower half section of side wall concrete pouring adopts groove pouring;
step e, waterproof treatment of the construction joint: and a grouting guide pipe is arranged in the middle of the side wall, and water-swelling water-stop glue is arranged at a position 100mm away from the inner and outer skins of the side wall.
Furthermore, in the step d, the included angle between the groove and the side wall is 30-45 degrees; and (3) by jacking the lower half section of concrete to compact the Z-shaped interface construction joint, before the concrete is finally set, removing the concrete at the groove to enable the surface of the side wall body to be flat.
Furthermore, in the step e, a full-section grouting pipe is adopted as the grouting pipe.
Further, in the step e, the water stop glue is made of rainwater-expanded polyurethane water stop glue.
Has the advantages that:
(1) in the invention, the protection of a steel bar connecting joint at the construction joint of the side wall of the reverse basement, the design of a concrete joint surface, the selection of a concrete pouring mode and the disposal of a special waterproof mode at the position are designed and constructed;
(2) the invention improves the survival rate of the steel bar joint, is convenient for field operation, improves the compactness of concrete of the joint surface, and reduces the leakage probability of the construction joint by a special waterproof mode.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic structural view of a groove in the present embodiment;
fig. 3 is a schematic view of the waterproof structure in this embodiment.
In the figure, 11, side wall vertical steel bars; 12. a plug template; 13. a batten secondary keel; 14. back filling sand; 15. clamping the template; 16. a concrete cushion; 21. water stopping glue; 22. a grouting pipe; 221. a connecting pipe; 222. a grouting guide pipe; 23. and (4) beveling.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example (b): a reverse construction basement side wall construction joint processing structure is shown in figures 1, 2 and 3 and comprises a Z-shaped interface plug template 12 supporting system, and a lower foundation of the system is usually in a mode that a concrete cushion 16 is arranged on undisturbed soil.
The concrete cushion is characterized by further comprising a plurality of sleeves symmetrically arranged in the concrete cushion 16, and side wall vertical steel bars 11 are inserted into the sleeves.
The side wall vertical reinforcement 11 inboard sets up the reinforcement system, including flitch secondary joist 13, flitch secondary joist 13 top is provided with end cap template 12, and wherein, end cap template 12 adopts the bamboo plywood that 15mm-30mm is thick, and flitch secondary joist 13 adopts 50mm 10 mm's square timber. The batten secondary keel 13 and the plug template 12 form a Z-shaped connector plug with symmetrical internal and external deviation of 50 mm;
the reinforcing system is arranged on the outer side of the side wall vertical steel bar 11 and comprises a clamping template 15, the clamping template 15 adopts a bamboo plywood, and the bamboo plywood meeting the design protection layer thickness requirement is attached to the outer side of the root of the vertical steel bar to clamp and fix a steel bar joint.
11 joints of side wall vertical reinforcement are provided with the braced system, including filling backfill sand 14 between centre gripping template 15 and the flitch secondary joist 13 the backfill sand 14 of 11 joint positions of side wall vertical reinforcement will guarantee closely knit, and will all cover box joint, do not allow to have the joint to expose the concrete pollution.
A groove 23 is arranged at the lower half section of the side wall, and concrete is poured in the groove 23; the joint concrete of the construction joint is gradually compacted from the outer side to the inner side by the pressure of the upper top of the concrete.
The waterproof treatment mode of construction joint adopts the side wall middle part to set up slip casting pipe 222, sets up water swelling stagnant water glue 21 apart from the interior outer epidermis 100mm position department of side wall. The construction joint water stop glue 21 is made of rainwater-expanded polyurethane water stop glue 21, the size of a cured and molded section is (8-10) mmx (18-20) mm, and the grouting pipe 22 is a full-section grouting pipe 22. A grouting pipe 222 is connected to the grouting pipe 22 through a connection pipe 221, and is used for introducing concrete.
The invention also provides a processing method of the structure for processing the construction joint of the side wall of the reverse basement, which comprises the following steps:
step a, reinforcing the inner side of the vertical steel bar of the side wall:
step a1, tamping natural soil foundations at the lower parts of the side walls, and pouring concrete cushions according to the widths of the side walls;
step a2, processing a plug template and a batten secondary keel according to the thickness of the side wall and the row spacing of the vertical steel bars of the side wall;
step a3, inserting the side wall vertical steel bars into sleeves preset in the concrete cushion, and inserting and installing plug templates and batten secondary keels in the process of installing the side wall vertical steel bars;
b, reinforcing the outer side of the vertical steel bar of the side wall: clamping the joint of the side wall vertical steel bar by utilizing the clamping template attached to the outer side of the root part of the side wall vertical steel bar;
step c, protecting the joint of the vertical steel bar of the side wall: filling and covering the vertical steel bar joints and the sleeves of the side walls with backfill sand;
step d, concrete pouring treatment at the construction joint: the upper and lower sections of concrete are connected through a Z-shaped interface construction joint, and the lower half section of side wall concrete pouring adopts groove pouring; the included angle between the groove and the side wall is 30-45 degrees; and (3) by jacking the lower half section of concrete to compact the Z-shaped interface construction joint, before the concrete is finally set, removing the concrete at the groove to enable the surface of the side wall body to be flat.
Step e, waterproof treatment of the construction joint: and a grouting guide pipe is arranged in the middle of the side wall, and water-swelling water-stop glue is arranged at a position 100mm away from the inner and outer skins of the side wall. Wherein, the slip casting pipe adopts full section slip casting pipe. The water stop glue is made of rain water expansion polyurethane.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a structure is handled to contrary basement side wall construction joint, its characterized in that of doing: the concrete cushion comprises a concrete cushion (16), wherein a plurality of sleeves are symmetrically arranged in the concrete cushion (16), side wall vertical steel bars (11) are inserted into the sleeves, flitch cross runners (13) are arranged between the side wall vertical steel bars (11), plug templates (12) are arranged above the flitch cross runners (13), clamping templates (15) are arranged outside the side wall vertical steel bars (11), and joints and sleeves of the side wall vertical steel bars (11) are filled and covered by backfill sand (14) between the clamping templates (15) and the flitch cross runners (13); a groove (23) is arranged at the lower half section of the side wall, and concrete is poured in the groove (23); the middle part of the side wall is provided with a grouting pipe (22), and the inside and the outside of the side wall are both provided with water stop glue (21).
2. The structure of claim 1, wherein the structure comprises: the plug template (12) adopts a bamboo plywood with the thickness of 15mm-30mm, and the batten secondary keel (13) adopts a 50mm 10mm square timber.
3. The structure of claim 1, wherein the structure comprises: the waterproof glue (21) is a rainwater-expanded polyurethane waterproof glue (21).
4. The structure of claim 1, wherein the structure comprises: the water stop glue (21) is arranged at a position 100mm away from the inner and outer skins of the side wall.
5. The structure of claim 1, wherein the structure comprises: the grouting pipe (22) adopts a full-section grouting pipe (22).
6. The method for processing the inverse basement side wall construction joint processing structure as claimed in claim 1, wherein the method comprises the following steps: the method comprises the following steps:
step a, reinforcing the inner side of a vertical steel bar (11) of the side wall:
step a1, tamping natural soil foundations at the lower part of the side wall, and pouring a concrete cushion (16) according to the width of the side wall;
step a2, processing a plug template (12) and a batten secondary keel (13) according to the thickness of the side wall and the row spacing of the side wall vertical steel bars (11);
step a3, inserting side wall vertical steel bars (11) into sleeves preset in a concrete cushion (16), and inserting and installing plug templates (12) and wood square secondary keels (13) in the process of installing the side wall vertical steel bars (11);
step b, reinforcing the outer side of the vertical steel bar (11) of the side wall: clamping the joint of the side wall vertical steel bar (11) by attaching a clamping template (15) to the outer side of the root of the side wall vertical steel bar (11);
step c, protecting the joint of the side wall vertical steel bar (11): filling and covering the joints and the sleeves of the vertical steel bars (11) of the side walls by using backfill sand (14);
step d, concrete pouring treatment at the construction joint: the upper and lower sections of concrete are connected through a Z-shaped interface construction joint, and the concrete pouring of the lower half section of side wall adopts a groove (23);
step e, waterproof treatment of the construction joint: a grouting guide pipe (222) is arranged in the middle of the side wall, and water-swelling water stop glue (21) is arranged at a position 100mm away from the inner and outer skins of the side wall.
7. The method for processing the structure for processing the construction joint of the side wall of the inverse basement according to claim 6, wherein the method comprises the following steps: in the step d, the included angle between the groove (23) and the side wall is 30-45 degrees; and (3) removing the concrete at the groove (23) to level the surface of the side wall body before final setting of the concrete by jacking the lower half section of concrete to compact the Z-shaped interface construction joint.
8. The method for processing the structure for processing the construction joint of the side wall of the inverse basement according to claim 6, wherein the method comprises the following steps: in the step e, the full-section grouting pipe (22) is adopted as the grouting pipe (22).
9. The method for processing the structure for processing the construction joint of the side wall of the inverse basement according to claim 6, wherein the method comprises the following steps: in the step e, the waterproof glue (21) is made of rainwater-expanded polyurethane waterproof glue (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767481.4A CN111749326A (en) | 2020-08-03 | 2020-08-03 | Reverse construction basement side wall construction joint processing structure and processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010767481.4A CN111749326A (en) | 2020-08-03 | 2020-08-03 | Reverse construction basement side wall construction joint processing structure and processing method |
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| CN111749326A true CN111749326A (en) | 2020-10-09 |
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| CN202010767481.4A Pending CN111749326A (en) | 2020-08-03 | 2020-08-03 | Reverse construction basement side wall construction joint processing structure and processing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112779931A (en) * | 2021-01-26 | 2021-05-11 | 中国五冶集团有限公司 | Basement construction joint waterproof device, waterproof structure and waterproof method |
| CN113756371A (en) * | 2021-09-15 | 2021-12-07 | 中国二十二冶集团有限公司 | Concrete density construction method at horizontal seam of waterproof concrete |
| CN115434363A (en) * | 2022-09-30 | 2022-12-06 | 武汉誉城千里建工有限公司 | Retaining wall construction method suitable for repeated excavation and backfilling working condition |
-
2020
- 2020-08-03 CN CN202010767481.4A patent/CN111749326A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112779931A (en) * | 2021-01-26 | 2021-05-11 | 中国五冶集团有限公司 | Basement construction joint waterproof device, waterproof structure and waterproof method |
| CN113756371A (en) * | 2021-09-15 | 2021-12-07 | 中国二十二冶集团有限公司 | Concrete density construction method at horizontal seam of waterproof concrete |
| CN115434363A (en) * | 2022-09-30 | 2022-12-06 | 武汉誉城千里建工有限公司 | Retaining wall construction method suitable for repeated excavation and backfilling working condition |
| CN115434363B (en) * | 2022-09-30 | 2023-06-02 | 武汉誉城千里建工有限公司 | Retaining wall construction method suitable for repeated excavation backfill working condition |
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