CN107327050B - Disassembly-free basement exterior wall flanging unilateral formwork supporting device and construction method - Google Patents
Disassembly-free basement exterior wall flanging unilateral formwork supporting device and construction method Download PDFInfo
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- CN107327050B CN107327050B CN201710749539.0A CN201710749539A CN107327050B CN 107327050 B CN107327050 B CN 107327050B CN 201710749539 A CN201710749539 A CN 201710749539A CN 107327050 B CN107327050 B CN 107327050B
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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
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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Abstract
The invention discloses a disassembly-free basement exterior wall flanging single-side formwork supporting device and a construction method, wherein the device comprises a precast concrete flat plate, a precast concrete U-shaped plate, a straight-line-shaped connecting steel plate, an L-shaped connecting steel plate, an iron wire, a sheep eye bolt and a nut, and the construction method comprises the following steps: paying out a positioning line of the precast concrete thin plate on the raft steel bar, adjusting the nearest raft steel bar to the outer side of the precast concrete thin plate to be bound and placed on the position of the positioning line of the precast concrete thin plate; placing the precast concrete thin plate on raft steel bars and tightly attaching to basement outer wall steel bars, and fixing and connecting the straight-line-shaped connecting steel plate, the L-shaped connecting steel plate and the precast concrete thin plate into a whole through the sheep eye bolts and the nuts; connecting two ends of the iron wire with the sheep eye bolt and the raft plate steel bar respectively; before the raft plate concrete is initially set, the flanging concrete of the basement outer wall is poured. The device and the method can ensure the verticality and the flatness of the flanging of the outer wall of the basement, and save the cost for building and dismantling.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a disassembly-free type basement exterior wall flanging single-side formwork supporting device and a construction method.
Background
In the basement structure work progress, because the place restriction, supporting construction is nearer apart from the basement outer wall distance, if adopt two-sided formwork that prop not have operating space, just need carry out unilateral formwork this moment. In the design process of the basement outer wall, in consideration of the construction process, a horizontal construction joint (namely, a flanging, the height required by the specification is more than or equal to 300mm when the concrete surface of the foundation slab turns upwards) can be reserved on the basement outer wall, the traditional construction method is that the flanging is in a formwork supporting mode of a wood formwork, a batten and a steel pipe are used for jacking reversely, the width of a pouring section (the thickness of the basement outer wall and the distance from the basement outer wall to a supporting pile) is increased due to single-side formwork supporting, the flanging height in the traditional construction method is usually set according to the modulus (the height is 900 mm) of one wood formwork, waste is avoided by cutting the formwork, the height is too high, operation is difficult, formwork expansion is easy, the surface is raised after flanging forming, the construction quality of the wall single-side formwork supporting above the horizontal construction joint in the next process is directly influenced by concrete, the joint of the construction joint of the basement outer wall is uneven in a large area, and the verticality does not meet the requirement.
Disclosure of Invention
The invention aims to provide a disassembly-free basement outer wall flanging single-side formwork supporting device which is prefabricated by concrete, has a smooth surface and enough rigidity, does not deform the surface, is equal to a basement outer wall steel bar protective layer, can effectively control the verticality of the basement outer wall flanging, and ensures the quality of the next working procedure.
The invention also aims to provide a construction method for flanging and single-side formwork erection of the non-dismantling basement exterior wall, the construction method is simple and quick, the verticality and the flatness of the assembled precast concrete thin plate can be effectively ensured, and in the concrete pouring process, the assembled precast concrete thin plate is influenced by the lateral pressure of the concrete, and the spliced part cannot deform.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an exempt from to tear open formula basement outer wall turn-ups unilateral formwork device, including the precast concrete flat board, precast concrete U template, a style of calligraphy steel sheet, L type steel sheet, the iron wire, the sheep eye bolt, the nut, connect through a style of calligraphy steel sheet between the precast concrete flat board, connect through L type steel sheet between precast concrete flat board and the precast concrete U template, through sheep eye bolt and nut with a style of calligraphy steel sheet, L type steel sheet and precast concrete flat board, the precast concrete U template is fixed and connects into a slice, the one end and the sheep eye bolt fixed connection of iron wire, the other end and raft board steel bar connection, it is dull and stereotyped with the precast concrete, precast concrete U template vertical fixation.
A dismounting-free basement exterior wall flanging unilateral formwork erecting construction method comprises the following steps:
1) The prefabricated concrete thin plate positioning line is discharged from the raft steel bar, and the raft steel bar closest to the outer side of the prefabricated concrete thin plate is adjusted to be bound and placed on the position of the prefabricated concrete thin plate positioning line to serve as the prefabricated concrete thin plate positioning steel bar so as to prevent the prefabricated concrete thin plate from displacing;
2) The prefabricated concrete thin plate is divided into a prefabricated concrete flat plate and a prefabricated concrete U-shaped plate, the prefabricated concrete U-shaped plate is placed on raft steel bars and is tightly attached to a frame column, the prefabricated concrete flat plate is placed on the raft steel bars and is tightly attached to basement outer wall steel bars, supporting steel bars are arranged under the prefabricated concrete thin plate, the prefabricated concrete U-shaped plate and the prefabricated concrete flat plate are connected through L-shaped connecting steel plates, the prefabricated concrete flat plates are connected through linear connecting steel plates, and the linear connecting steel plates, the L-shaped connecting steel plates and the prefabricated concrete thin plate are fixed and connected into a whole through sheep eye bolts and nuts;
3) After the prefabricated concrete thin plates are connected, one end of an iron wire is fixedly connected with the sheep eye bolt, the other end of the iron wire is connected with the raft plate reinforcing steel bars, the prefabricated concrete thin plates and the raft plate reinforcing steel bars are fixed through the iron wire, and the prefabricated concrete thin plates are adjusted to be vertical;
4) Pouring raft plate concrete, and pouring the flanging concrete of the outer wall of the basement before the raft plate concrete is initially set.
In the dismounting-free basement exterior wall flanging unilateral formwork construction method, preferably, the height of the precast concrete thin plate is equal to the height of the horizontal construction joint plus the thickness of the raft steel bar protection layer.
In the dismounting-free basement exterior wall flanging single-side formwork construction method, preferably, the thickness of the precast concrete sheet is equal to the thickness of the basement exterior wall reinforcement protection layer.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. the thickness of the precast concrete thin plate is 30-50 mm and is equal to that of a protective layer of a steel bar of the basement outer wall, the precast concrete thin plate and the structure are integrated after pouring, extra dismantling is not needed, and erecting and dismantling costs of templates, battens and steel pipe materials in a traditional support system are saved.
2. The surface of the precast concrete sheet is smooth, the cast concrete can not expand after the precast concrete sheet is firmly installed, the construction quality of a large-area single-side formwork support above a horizontal construction joint of the basement outer wall in the next procedure is ensured, the construction joint is in smooth transition, and the impression effect is good.
3. The height of the precast concrete sheet can meet the height of the basement exterior wall construction joint in the standard requirement, and is not limited by the modulus of the traditional wood formwork.
4. The device simple structure, the preparation is convenient, and low cost, and connecting piece and nut can dismantle used repeatedly after concrete placement accomplishes.
Drawings
FIG. 1 is a schematic view of installation of a prefabricated concrete slab with a flanging on the outer wall of a basement.
FIG. 2 is a schematic view of completion of pouring of the concrete for the flanging of the basement exterior wall.
FIG. 3 is a schematic structural view of a precast concrete slab.
Fig. 4 is an unfolded schematic view of a precast concrete U-shaped slab structure.
FIG. 5 is a schematic view showing the connection of precast concrete slabs.
FIG. 6 is a schematic view of the connection between a precast concrete slab and a precast concrete U-shaped slab.
FIG. 7 is a schematic view of the connection of the I-shaped connection steel plates.
Fig. 8 is a schematic connection diagram of the L-shaped connection steel plates.
Fig. 9 is a schematic view showing the completion of joining precast concrete thin slabs.
The prefabricated concrete slab comprises 1-prefabricated concrete slabs, 2-sheep eye bolts, 3-nuts, 4-basement outer wall reinforcing steel bars, 5-supporting piles, 6-water-stop steel plates, 7-water-stop steel plate fixing ribs, 8-iron wires, 9-prefabricated concrete sheet positioning reinforcing steel bars, 10-raft reinforcing steel bars, 11-supporting reinforcing steel bars, 12-positioning reinforcing steel bars, 13-reinforcing steel bar meshes, 14-reserved holes, 15-straight-line-shaped connecting steel plates, 16-L-shaped connecting steel plates, 17-prefabricated concrete U-shaped plates, 18-raft plate concrete and 19-basement outer wall flanging concrete.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 9.
The utility model provides an exempt from to tear open formula basement outer wall turn-ups unilateral formwork device, includes precast concrete sheet metal, connecting plate, iron wire 8, sheep eye bolt 2, nut 3. As shown in fig. 6, the precast concrete thin plate is divided into a precast concrete flat plate 1 and a precast concrete U-shaped plate 17, as shown in fig. 3 and 4, reinforcing steel bar meshes 13 are arranged in the precast concrete flat plate 1 and the precast concrete U-shaped plate 17, the reinforcing steel bar meshes 13 are composed of smooth steel bars distributed longitudinally and transversely, and the precast concrete flat plate 1 and the U-shaped plate 17 are provided with reserved holes 14; the connecting steel plates are divided into a straight connecting steel plate 15 and an L-shaped connecting steel plate 16, as shown in figures 5 and 7, the precast concrete flat plates 1 are connected through the straight connecting steel plate 15, as shown in figures 6 and 8, the precast concrete flat plates 1 are connected with the precast concrete U-shaped plates 17 through the L-shaped connecting steel plate 16, the sheep eye bolts 2 penetrate through the reserved holes 14 in the precast concrete thin plates, and the straight connecting steel plate 15 and the L-shaped connecting steel plate 16 are fixed with the precast concrete thin plates through nuts 3, so that the precast concrete thin plates are connected into a whole; as shown in fig. 1, one end of the iron wire 8 is fixedly connected with the sheep eye bolt 2, and the other end is connected with the raft steel bar 10, so as to tighten the precast concrete sheet and adjust the verticality thereof.
Fig. 1 is a schematic view of the installation of a flanging precast concrete slab of the basement exterior wall, wherein a reinforcing steel bar 4 of the basement exterior wall is welded and fixed with a raft plate reinforcing steel bar 10 through a positioning reinforcing steel bar 12, so that the reinforcing steel bar of the basement exterior wall is firm and does not shake, and the verticality meets the requirement; the supporting steel bars 11 are equal to the split heads and play a role in supporting the raft plate steel bars 10; the supporting piles 5 are positioned on the outermost side of the basement and mainly play a role in retaining soil; the horizontal position of the water stop steel plate fixing rib 7 is the same as the top surface of the precast concrete slab 1, one end of the water stop steel plate fixing rib 7 is welded with the middle of the water stop steel plate 6, and the other end of the water stop steel plate fixing rib is welded with the basement outer wall steel bar 4.
The invention discloses a disassembly-free basement exterior wall flanging single-side formwork erecting method, which is explained in the embodiment by taking the basement exterior wall horizontal construction joint height of 500mm as an example and comprises the following steps:
1. as shown in fig. 1, the positioning line of the precast concrete thin plate is released on the raft steel bar 10, and a raft steel bar closest to the outer side of the precast concrete thin plate is adjusted to be bound and placed on the positioning line of the precast concrete thin plate to serve as a precast concrete thin plate positioning steel bar 9, so that the precast concrete thin plate is prevented from displacing;
2. the height of the precast concrete thin plate is 550mm (the height of a horizontal construction joint is 500mm + the thickness of a raft steel bar protection layer is 50 mm), the thickness of the precast concrete thin plate is 30-50 mm, the precast concrete thin plate and the basement outer wall steel bar protection layer are as same as the thickness of the basement outer wall steel bar protection layer, namely a precast concrete flat plate 1 and a precast concrete U-shaped plate 17, the precast concrete U-shaped plate 1 can be manufactured according to the length of each section of the basement outer wall on a construction drawing, the precast concrete U-shaped plate 17 is manufactured according to the size of a frame column, as shown in figure 9, the precast concrete U-shaped plate 17 is placed on the raft steel bar 10 and is tightly attached to the frame column, the precast concrete flat plate 1 is placed on the raft steel bar 10 and is tightly attached to the basement outer wall steel bar 4, a support steel bar 11 is arranged right below the precast concrete thin plate to ensure that the bottom of the precast concrete thin plate is flat and does not bend downwards, the precast concrete U-shaped plate 17 and the precast concrete flat plate 1 are connected through an L-shaped connecting steel plate 16, the precast concrete flat plate 1 are connected through a I-shaped connecting 15, the sheep eye bolts 2 penetrate through holes 14 reserved on the precast concrete thin plate, and an L-shaped connecting nut 15 and an L-shaped connecting steel plate 16 are connected with the precast concrete thin plate to form a precast concrete thin plate, and then a precast concrete thin plate, and a precast concrete thin plate is fixed to form the precast concrete thin plate, and the precast concrete thin plate;
3. after the prefabricated concrete thin plate is connected, one end of an iron wire 8 is fixedly connected with the sheep eye bolt 2, the other end of the iron wire 8 is connected with a raft plate reinforcing steel bar 10, the prefabricated concrete thin plate is fixed with the raft plate reinforcing steel bar 10 through the iron wire 8, and the prefabricated concrete thin plate can be adjusted to be vertical;
4. pouring raft plate concrete 18, pouring basement outer wall flanging concrete 19 before the raft plate concrete 18 is initially set, and fig. 2 is a schematic diagram of completion of pouring of the basement outer wall flanging concrete.
Claims (3)
1. A construction method for a disassembly-free basement exterior wall flanging unilateral formwork support comprises the following steps:
1) Placing a prefabricated concrete thin plate positioning line on the raft steel bar (10), adjusting a raft steel bar closest to the outer side of the prefabricated concrete thin plate to be bound and placed on the position of the prefabricated concrete thin plate positioning line to serve as a prefabricated concrete thin plate positioning steel bar (9), and preventing the prefabricated concrete thin plate from displacing;
2) The prefabricated concrete thin plate is divided into a prefabricated concrete flat plate (1) and a prefabricated concrete U-shaped plate (17), the prefabricated concrete U-shaped plate (17) is placed on raft steel bars (10) and is tightly attached to a frame column, then the prefabricated concrete flat plate (1) is placed on the raft steel bars (10) and is tightly attached to basement outer wall steel bars (4), supporting steel bars (11) are arranged under the prefabricated concrete thin plate, the prefabricated concrete U-shaped plate (17) and the prefabricated concrete flat plate (1) are connected through L-shaped connecting steel plates (16), the prefabricated concrete flat plates (1) are connected through linear connecting steel plates (15), and the linear connecting steel plates (15) and the L-shaped connecting steel plates (16) are fixed and connected with the prefabricated concrete thin plate into a whole through sheep eye bolts (2) and nuts (3);
3) After the prefabricated concrete thin plates are connected, one end of an iron wire (8) is fixedly connected with the sheep eye bolt (2), the other end of the iron wire is connected with a raft plate reinforcing steel bar (10), the prefabricated concrete thin plates are fixed with the raft plate reinforcing steel bar (10) through the iron wire (8), and the prefabricated concrete thin plates are adjusted to be vertical;
4) Pouring raft plate concrete (18), and pouring basement outer wall flanging concrete (19) before the raft plate concrete (18) is initially set.
2. The disassembly-free basement exterior wall flanging single-side formwork construction method according to claim 1, wherein the height of the precast concrete thin plate is equal to the height of the horizontal construction joint plus the thickness of a raft steel bar protection layer.
3. The disassembly-free basement exterior wall flanging single-side formwork erecting construction method according to claim 1, wherein the thickness of the precast concrete sheet is equal to the thickness of a reinforcement protection layer of the basement exterior wall.
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| CN112459469A (en) * | 2020-11-26 | 2021-03-09 | 中国一冶集团有限公司 | Embedded device for eliminating single-side formwork offset joint and using method thereof |
| CN112681332A (en) * | 2020-12-03 | 2021-04-20 | 中建六局土木工程有限公司 | Construction method for supporting system by using steel sheet piles in complex environment |
| CN113152882A (en) * | 2021-04-29 | 2021-07-23 | 中国二十二冶集团有限公司 | Mixed construction method for basement exterior wall formwork and hot-laid waterproof coiled material |
| CN113215937B (en) * | 2021-05-21 | 2022-10-21 | 中铁二局集团有限公司 | Construction method of tunnel concrete base layer |
| CN113775174A (en) * | 2021-09-28 | 2021-12-10 | 中国二十二冶集团有限公司 | Construction method for reinforcing underground external wall formwork of complex limited space in foundation pit |
| CN115012661A (en) * | 2022-06-15 | 2022-09-06 | 中建八局第三建设有限公司 | Basement exterior wall horizontal construction joint formwork supporting construction method under unilateral formwork supporting working condition |
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| JPH08269983A (en) * | 1995-02-01 | 1996-10-15 | Mitsubishi Materials Corp | Method for constructing basement |
| CN2594343Y (en) * | 2002-09-10 | 2003-12-24 | 周卫国 | Sectional H-shape reinforcing bar cast-in-situs thermal energy-saving constructural member |
| CN202047424U (en) * | 2011-04-22 | 2011-11-23 | 中国建筑第七工程局有限公司北方分公司 | Large elevation difference raft plate with multilayer steps |
| CN102912748B (en) * | 2012-11-05 | 2014-03-12 | 甘肃路桥建设集团有限公司 | Removal-free template on inner side of concrete base of anti-collision guardrail and application method thereof |
| CN103615007B (en) * | 2013-12-12 | 2015-09-09 | 中国建筑第八工程局有限公司 | A kind of construction method of simultaneously building outer wall of basement and base plate |
| CN104032895A (en) * | 2014-04-12 | 2014-09-10 | 北京工业大学 | Disassembly-free high-performance cement mortar template heat-preservation recycled concrete L-shaped column and manufacturing method |
| CN105220874B (en) * | 2015-09-11 | 2017-07-25 | 安徽六安市飞宇建设工程有限公司 | The construction method of basement superelevation exterior wall self-supporting single side formwork system |
| CN105113650A (en) * | 2015-09-15 | 2015-12-02 | 万保金 | Assembling thermal-insulation form board with disassembling-free prefabricated mold form |
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| CN106639068B (en) * | 2017-01-23 | 2022-11-04 | 史世英 | Support-free cast-in-place reinforced concrete wall form infilled wall and construction method thereof, and manufacturing method of wall form veneer and non-bearing infilled wall |
| CN106958312A (en) * | 2017-05-16 | 2017-07-18 | 哈尔滨工业大学（威海） | A kind of non-dismantling formwork and its construction method |
| CN207392530U (en) * | 2017-08-28 | 2018-05-22 | 武汉建工集团股份有限公司 | A kind of avoid-dismantle outer wall of basement flange single side formwork device |
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