CN115198806A - Underground wall post-cast strip template reinforcing and installing construction method - Google Patents
Underground wall post-cast strip template reinforcing and installing construction method Download PDFInfo
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- CN115198806A CN115198806A CN202210838862.6A CN202210838862A CN115198806A CN 115198806 A CN115198806 A CN 115198806A CN 202210838862 A CN202210838862 A CN 202210838862A CN 115198806 A CN115198806 A CN 115198806A
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- post
- cast strip
- template
- wall
- protection plate
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 5
- 238000009415 formwork Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a reinforcing and installing construction method for a post-cast strip template of an underground wall body, and relates to the technical field of post-cast strip template construction of underground wall bodies. The reserved tie bars are arranged on the surface of the concrete outer wall protection plate, one side of each reserved tie bar is tightly attached to the outer wall of the post-pouring belt, so that the tie bars are positioned in the wall body of the post-pouring belt, waterproof mortar is adopted to level and tightly block a gap between the outer wall protection plate and the wall body of the post-pouring belt, and earthwork is timely filled back after an anti-corrosion waterproof layer is made. And the post-cast strip inner wall template counter-pulling screw rod is welded with the reserved tie bars of the outer wall concrete protection plate, and the other end of the post-cast strip inner wall template counter-pulling screw rod is fastened by adopting a dovetail clamp matched with a steel pipe nut. And the oppositely-pulled screw rods exposed on the original wall bodies on the two sides of the post-cast strip are used as locking devices of the back edges of the inner side plates of the post-cast strip, so that the number of the oppositely-pulled bolt rods in the wall body of the post-cast strip is reduced, the water seepage and leakage channels of the wall body are reduced, the double reinforcing effect is achieved, and the appearance forming quality of the concrete is improved.
Description
Technical Field
The invention relates to the technical field, in particular to a method for reinforcing and installing and constructing a post-cast strip template of an underground wall.
Background
Large-scale rolling mill box type equipment foundations or buildings (such as a water pool and the like) with a certain length are required to be provided with post-cast belts to solve the problems of shrinkage of concrete and foundation settlement. The general width of post-cast strip is between 800mm ~ 1000mm, reaches the full length setting of roof plate from the bottom plate to the wall body, reaches the certain time after the major structure construction, and the non-shrink concrete of one grade of height is poured after the both sides basis subsides evenly stably. However, especially in the metallurgical industry, large box-shaped foundation walls are thick and deep (generally over 10 meters), a step-by-step slope-enlarging excavation mode is generally adopted, at the moment, the peripheral area of a post-cast strip cannot be backfilled in time, so that material stacking, transportation, component arrangement and road transportation are limited to a certain extent, certain potential safety hazards of foundation pits also exist, and even silt and rainwater are caused to flow into a foundation underground chamber during rainy seasons. Meanwhile, the post-cast strip formwork is not firmly supported and reinforced, and formwork expansion and slurry leakage also exist, so that concrete materials are wasted, and the cleaning and transportation are labor-consuming and time-consuming.
Disclosure of Invention
In order to solve the technical problems, the invention provides a formwork reinforcing and mounting construction method for a post-cast strip of an underground wall, which reduces the number of self counter-pull bolt rods in the post-cast strip wall, reduces water seepage and leakage channels of the wall and has double reinforcing effects.
In order to realize the technical purpose, the invention adopts the following scheme:
the construction method for reinforcing and installing the template of the post-cast strip of the underground wall body comprises the following steps of:
s1, manufacturing a concrete protection plate; a reserved lacing wire is fixed on one side of the concrete protection plate and is used as a fixed stress point of the counter-pulling screw rod;
s2, manufacturing a post-pouring strip template system: assembling a template system in advance according to the width and the height of a post-cast strip, and drilling holes on a template according to a set counter-pull bolt rod;
s3, cleaning a post-cast strip:
s4, sealing the outer side template:
hoisting the protection board to the position of the post-cast strip, enabling the reserved lacing bars of the protection board to be attached to the post-cast strip, respectively plugging and leveling gaps between the wall body and the protection board and gaps between adjacent protection boards by using waterproof mortar, and then backfilling and compacting earthwork on the outer side of the protection board in a layered manner;
s5, closing and reinforcing a template system:
before the inner side template is closed, one end of a counter-pulling screw rod and a reserved lacing bar of the protection plate are welded and lengthened, the other end of the counter-pulling screw rod penetrates through the inner side template, and the counter-pulling locking of the inner side template and the protection plate is carried out by matching with double rows of steel pipes and a dovetail clamp; laying double-row scaffold tubes on the outer side of the inner template, clamping the double-row scaffold tubes on two sides of a reserved counter-pull screw exposed on guide walls on two sides of a rear pouring belt, and fastening the double-row scaffold tubes by using dovetail card connection reserved counter-pull screws so as to tightly push and compact a template system;
and S6, pouring concrete.
Compared with the prior art, the invention has the beneficial effects that: the reserved tie bars are arranged on the surface of the concrete outer wall protection plate, one side of each reserved tie bar is tightly attached to the outer wall of the post-pouring belt, so that the tie bars are positioned in the wall of the post-pouring belt, waterproof mortar is adopted to tightly level and plug the gap between the outer wall protection plate and the wall of the post-pouring belt, and earthwork is timely backfilled after an anti-corrosion waterproof layer is made. And the post-cast strip inner wall template counter-pulling screw rod is welded with the reserved tie bars of the outer wall concrete protection plate, and the other end of the post-cast strip inner wall template counter-pulling screw rod is fastened by adopting a dovetail clamp matched with a steel pipe nut. And the oppositely-pulled screw rods exposed on the original wall bodies on the two sides of the post-cast strip are used as locking devices of the back edges of the inner side plates of the post-cast strip, so that the number of the oppositely-pulled bolt rods in the wall body of the post-cast strip is reduced, the water seepage and leakage channels of the wall body are reduced, the double reinforcing effect is achieved, and the appearance forming quality of the concrete is improved.
Furthermore, the protection plate is made of concrete with the allowance, the strength grade is C20-C30, the thickness of the protection plate is 100-150mm, each end of the protection plate in the width direction exceeds the post-pouring belt by 100-200mm, and the height of each protection plate is controlled between 1000-2000 mm.
Further, cutting off the end part of the reserved counter-pulling screw rod at one side, which is attached to the protective plate, of the guide walls on the two sides of the post-cast strip, and reserving the reserved counter-pulling screw rod at one side, which is attached to the inner side template, of the guide walls; because the outside of the protection plate needs to be backfilled with earth, the protection plate is pressed by the earth and tightly attached to the wall, the tension of the counter-pull screws is not required to be reserved, and the tension force of the counter-pull screws at the middle post-cast strip and the earth pressure meet the pressing force of the supporting formwork of the protection plate.
Drawings
FIG. 1 is a schematic view of a reinforcing structure of a post-cast strip formwork of an underground wall provided by an embodiment of the invention;
FIG. 2 isbase:Sub>A side view of the A-A plane of FIG. 1;
FIG. 3 is a side view of a protective plate according to an embodiment of the present invention;
FIG. 4 is a top view of a reinforcing structure of a post-cast strip template of an underground wall provided by an embodiment of the invention;
labeled in the figure as: 1. a wall body; 2. double rows of steel pipes; 3. post-pouring a belt; 4. a stubble-connecting surface; 5. an inner side template; 6. a keel; 7. oppositely pulling the screw rod; 8. double rows of scaffold tubes; 9. reserving a counter-pulling screw rod; 10. a protection plate; 11. and reserving a lacing wire.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.
As shown in FIG. 1, the method for reinforcing and installing the formwork of the post-cast strip of the underground wall provided by the invention comprises the following steps:
s1, manufacturing a concrete protection plate
And manufacturing a certain number of reinforced concrete protection plates 10 according to the size of the post-cast strip of the wall body. The protective plate 10 is made of concrete with the remaining amount, the strength grade is C20-C30, the thickness is 100-150mm, each end in the width direction exceeds the post-cast strip by 100-200mm, and the height of each protective plate 10 is controlled between 1000-2000 mm. And according to the distance between the oppositely-pulling screw rods 7, the pull ribs 11 are fixedly reserved on the inner side surface of the protective plate 10 and are used as fixed stress points of the oppositely-pulling screw rods 7 and are welded and connected with the through-wall oppositely-pulling screw rods 7.
According to the structural requirements, a layer of steel bar net piece is arranged in the protective plate 10, the steel bar net piece only adopts steel bars with the diameter phi of 8-12 mm, one end of the reserved tie bar 11 is inserted on the steel bar net piece, the firmness of the reserved tie bar 11 is ensured, and the other end of the reserved tie bar 11 is exposed outside.
S2, manufacturing a post-pouring strip template system:
according to the width and the height of the post-pouring belt 3, a template system is assembled in advance, holes are drilled in the inner template 5 according to the arranged counter-pulling screw 7, and the batten keels 6 are fixed on the outer side of the inner template 5.
S3, cleaning the post-cast strip
Before the formwork is closed, floating concrete slurry and dust on the surface of the steel bar in the post-cast strip 3 and a connecting surface 4 on the side surface of the concrete wall body 1 are chiseled, and loose stones on the ground at the post-cast strip 3 are cleaned.
And reserving the counter-pulling screw rods when the guide wall bodies 1 on the two sides of the post-pouring belt 3 are poured and supported as reserved counter-pulling screw rods 9 of the post-pouring belt, wherein the end parts of the reserved counter-pulling screw rods 9 on the sides of the underground wall bodies to be backfilled with earthwork are cut off, and the other ends of the reserved counter-pulling screw rods are reserved and used for locking the inner side template 5. The protective plate 10 can also play a role of preventing water seepage to a certain extent without perforating, and is also an important function for underground walls.
S4, sealing of outer side template
Firstly, mounting the protection plate 10 on the outer wall body, hoisting the protection plate 10 to the position of the post-cast strip, enabling the reserved tie bars 11 on the protection plate 10 to be positioned in the post-cast strip 3, plugging and leveling gaps between the guide wall body 1 and the protection plate 10 on two sides of the post-cast strip 3 and gaps between two adjacent protection plates 10 by adopting waterproof mortar, then backfilling and compacting the earth on the outer side in a layered manner, and pressing the protection plate 10 and the guide wall by virtue of the extrusion force of the backfilled earth.
S5, closing and reinforcing the template system
Before the inner side template 5 is sealed, one end of a counter-pulling screw rod 7 and a reserved tie bar 11 of the protection plate are welded and lengthened, the other end of the counter-pulling screw rod 7 penetrates through the inner side template 5, and the counter-pulling locking of the inner side template 5 and the protection plate 10 is carried out by matching with a double-row steel pipe 2, a dovetail clamp and a locking nut. And finally, double rows of scaffold tubes 8 are laid outside the inner side template 5, reserved counter-pulling screws 9 exposed on guide walls on two sides of the post-cast strip 3 penetrate through two ends of the inner side template 5, and a template system is tightly pressed by matching with a dovetail clamp and a locking nut, so that the effects of preventing the safe storage of the expanded template and dual protection are achieved.
S6, pouring concrete in the post-pouring strip
And after the acceptance is qualified, performing concrete pouring and vibrating in a layering manner.
The invention has the comprehensive effects that:
(1) Local materials, convenient operation and high construction speed.
(2) Besides self opposite-pulling locking, the concrete is also reinforced by jacking and compacting, so that the double-reinforcing effect is achieved, and the appearance forming quality of the concrete is greatly improved.
(3) The number of self counter-pulling screws in the wall post-cast strip is small, water leakage and seepage channels of the wall are reduced, and the waterproof effect is obvious.
(4) And the foundation outer wall post-cast strip area is backfilled in advance, so that the material stacking, the material dumping and the smooth transportation road are facilitated.
(5) And potential safety hazards that soil bodies around the foundation pit collapse, are soaked by accumulated water and silt flows into the foundation pit are reduced.
Finally, it is noted that: the above-mentioned list is only the preferred embodiment of the present invention, and naturally those skilled in the art can make modifications and variations to the present invention, which should be considered as the protection scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.
Claims (3)
1. The method for reinforcing and installing the formwork of the post-cast strip of the underground wall body is characterized by comprising the following steps of:
s1, manufacturing a concrete protection plate; a reserved lacing wire is fixed on one side of the concrete protection plate and is used as a fixed stress point of the counter-pulling screw rod;
s2, manufacturing a post-pouring belt template system: assembling a template system in advance according to the width and the height of a post-cast strip, and drilling holes on an inner template according to a set split bolt rod;
s3, cleaning a post-cast strip:
s4, sealing the outer side template:
hoisting the protection board to the position of the post-cast strip, enabling the reserved lacing bars of the protection board to be attached to the post-cast strip, respectively plugging and leveling gaps between the wall body and the protection board and gaps between adjacent protection boards by using waterproof mortar, and then backfilling and compacting earthwork on the outer side of the protection board in a layered manner;
s5, closing and reinforcing a template system:
before the inner side template is closed, one end of a counter-pulling screw rod and a reserved lacing bar of the protection plate are welded and lengthened, the other end of the counter-pulling screw rod penetrates through the inner side template, and the counter-pulling locking of the inner side template and the protection plate is carried out by matching with double rows of steel pipes and a dovetail clamp;
laying double rows of scaffold tubes on the outer side of the inner template, clamping the double rows of scaffold tubes on two sides of a reserved counter-pull screw exposed on guide walls on two sides of a post-cast strip, and fastening the double rows of scaffold tubes by utilizing dovetail card connection reserved counter-pull screws so as to tightly push and compact a template system;
and S6, pouring concrete.
2. The reinforcing and installing construction method for the post-cast strip template of the underground wall body as claimed in claim 1, wherein the protection plate is made of concrete with a margin, the strength grade is C20-C30, the thickness of the protection plate is 100-150mm, each end of the protection plate in the width direction exceeds the post-cast strip by 100-200mm, and the height of each protection plate is controlled between 1000-2000 mm.
3. The underground wall post-cast strip formwork reinforcing and installing construction method as claimed in claim 1, wherein the end of the reserved counter-pulling screw on the side where the guide wall on the two sides of the post-cast strip is attached to the protective plate is cut off, and the reserved counter-pulling screw is reserved on the side where the guide wall is attached to the inner formwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210838862.6A CN115198806A (en) | 2022-07-18 | 2022-07-18 | Underground wall post-cast strip template reinforcing and installing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210838862.6A CN115198806A (en) | 2022-07-18 | 2022-07-18 | Underground wall post-cast strip template reinforcing and installing construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115198806A true CN115198806A (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210838862.6A Pending CN115198806A (en) | 2022-07-18 | 2022-07-18 | Underground wall post-cast strip template reinforcing and installing construction method |
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| CN (1) | CN115198806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117048072A (en) * | 2023-08-29 | 2023-11-14 | 河北军通电子装备科技有限公司 | Production method and mass production equipment for inflatable ceilings |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100757710B1 (en) * | 2006-09-04 | 2007-09-13 | 박무용 | Dowel bar construction method for downward construction of underground structures |
| CN209443765U (en) * | 2018-11-20 | 2019-09-27 | 中建三局第三建设工程有限责任公司 | A kind of steel form of the pouring after settlement shear wall for banketing in advance |
| CN209989847U (en) * | 2019-01-16 | 2020-01-24 | 湖南省第四工程有限公司 | Shear force wall post-cast strip prefabricated plate closing device |
| CN210482389U (en) * | 2019-07-02 | 2020-05-08 | 北京质诚捷讯水利工程有限公司 | Post-cast strip template supporting structure |
| CN212984630U (en) * | 2020-07-10 | 2021-04-16 | 中建八局第四建设有限公司 | Template device is sealed in advance to vertical post-cast strip |
| CN216787229U (en) * | 2021-11-03 | 2022-06-21 | 中建科工集团有限公司 | Basement outer wall post-cast strip assembled shutoff steel sheet structure |
-
2022
- 2022-07-18 CN CN202210838862.6A patent/CN115198806A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100757710B1 (en) * | 2006-09-04 | 2007-09-13 | 박무용 | Dowel bar construction method for downward construction of underground structures |
| CN209443765U (en) * | 2018-11-20 | 2019-09-27 | 中建三局第三建设工程有限责任公司 | A kind of steel form of the pouring after settlement shear wall for banketing in advance |
| CN209989847U (en) * | 2019-01-16 | 2020-01-24 | 湖南省第四工程有限公司 | Shear force wall post-cast strip prefabricated plate closing device |
| CN210482389U (en) * | 2019-07-02 | 2020-05-08 | 北京质诚捷讯水利工程有限公司 | Post-cast strip template supporting structure |
| CN212984630U (en) * | 2020-07-10 | 2021-04-16 | 中建八局第四建设有限公司 | Template device is sealed in advance to vertical post-cast strip |
| CN216787229U (en) * | 2021-11-03 | 2022-06-21 | 中建科工集团有限公司 | Basement outer wall post-cast strip assembled shutoff steel sheet structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117048072A (en) * | 2023-08-29 | 2023-11-14 | 河北军通电子装备科技有限公司 | Production method and mass production equipment for inflatable ceilings |
| CN117048072B (en) * | 2023-08-29 | 2024-02-20 | 河北军通电子装备科技有限公司 | Production method and mass production equipment for inflatable ceilings |
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