CN220150984U - A formwork structure for existing building beam slab transformation consolidates - Google Patents
A formwork structure for existing building beam slab transformation consolidates Download PDFInfo
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- CN220150984U CN220150984U CN202321443643.4U CN202321443643U CN220150984U CN 220150984 U CN220150984 U CN 220150984U CN 202321443643 U CN202321443643 U CN 202321443643U CN 220150984 U CN220150984 U CN 220150984U
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- 238000009415 formwork Methods 0.000 title claims abstract description 35
- 230000009466 transformation Effects 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 112
- 239000010959 steel Substances 0.000 claims abstract description 112
- 230000008093 supporting effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000002023 wood Substances 0.000 claims description 8
- 238000002407 reforming Methods 0.000 claims description 4
- 238000009420 retrofitting Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a formwork structure for reconstruction and reinforcement of an existing building beam slab, which comprises a U-shaped formwork and two floor slab bottom formworks; a row of steel pipe columns are arranged below the overhanging end of each residual floor slab, the bottom ends of the steel pipe columns are placed on the ground or the floor slab of the next layer, and a jack for supporting the overhanging end of each residual floor slab is arranged at the top end of each steel pipe column; a plurality of groups of double-steel-pipe hanging beams are spanned above the hollowed-out part, and a plurality of groups of double-steel-pipe joists are arranged below the hollowed-out part; two hanging ribs are arranged between each group of double steel pipe hanging beams and a corresponding group of double steel pipe joists, and each end of each hanging rib is connected with the double steel pipe hanging beam or the double steel pipe joist through a main nut and a mountain-shaped buckle; the U-shaped template is placed on the double steel pipe joists; each hanging rib penetrates through the floor slab bottom templates at the same side, an auxiliary nut is screwed on each hanging rib, and the corresponding floor slab bottom templates are abutted against the bottom surfaces of the residual floor slabs at the same side through the steel backing plates by the auxiliary nuts. The formwork structure has less occupation of lower space, and the erection process is quick and convenient, so that the construction period can be shortened.
Description
Technical Field
The utility model relates to the technical field of building reconstruction and expansion construction, in particular to a formwork supporting structure for reconstruction and reinforcement of existing building beams and plates, and more particularly relates to a formwork supporting device for a newly-added structural beam of a building floor.
Background
After the building is delivered, certain rooms on the building can be changed in use, for example, a normal room is changed into a warehouse for stacking materials or a laboratory for placing heavy equipment, and the like … …, so that the floor of the rooms needs to be reinforced and reformed, and the strength and the bearing capacity of the rooms are increased.
The conventional idea for building floor reinforcement is to add a structural beam in the middle of the span of the floor. Concrete in the middle of the span of the floor slab to be reinforced is smashed to form a left residual floor slab, a right residual floor slab and a hollow part in the middle; and building up a full-hall fastener scaffold from the ground below the floor to be reinforced or the next floor, building a U-shaped template for pouring the beam body at the top of the scaffold, building two floor bottom templates at two sides of the U-shaped template, binding a reinforcement cage of the structural beam and a reinforcement net of the post-pouring floor, and casting and tamping the concrete of the central structural beam and the post-pouring floors at two sides integrally. The post-cast floor slab is a transition floor slab for connecting the structural beam and the residual floor slab gap.
The full-hall fastener type scaffold erected from the ground or the next floor in the formwork supporting structure in the prior art has the following defects that the scaffold is huge in size, steel pipes and fasteners are dense, and the whole space below a hollowed-out part is occupied, so that the erection process is time-consuming and labor-consuming, high in labor cost and low in speed, and the construction period is prolonged; and above-mentioned full hall fastener formula scaffold frame needs to consume a large amount of steel pipes and fastener, and above-mentioned consumptive material can't have enough to meet the need in the lengthy process that the structural beam was reformed, so the consumptive material volume is big, and the economic nature is poor. Moreover, the higher the building level, the greater the cost caused by the technical defect, and the more drawbacks are brought about.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the formwork structure for the reconstruction and reinforcement of the existing building beam slab, which has the advantages of less occupation of lower space, quick and convenient erection process, shortened construction period, safe and stable supporting effect and small material consumption.
The technical scheme of the utility model is that the formwork structure for reforming and reinforcing the existing building beam slab comprises a U-shaped formwork for pouring a beam body and two floor bottom formworks positioned at two sides of the U-shaped formwork; the floor slab to be reinforced of the building comprises left and right residual floor slabs and a hollow part in the middle; a row of steel pipe columns are arranged below the overhanging end of each residual floor slab, the bottom ends of the steel pipe columns are placed on the ground or the floor slab of the next layer, and a jack for supporting the overhanging end of each residual floor slab is arranged at the top end of each steel pipe column; a plurality of groups of double-steel-pipe hanging beams are spanned above the hollowed-out part, and a plurality of groups of double-steel-pipe joists are arranged below the hollowed-out part; two hanging ribs are arranged between each group of double steel pipe hanging beams and a corresponding group of double steel pipe joists, and each end of each hanging rib is connected with the double steel pipe hanging beam or the double steel pipe joist through a main nut and a mountain-shaped buckle; the U-shaped template is placed on the double steel pipe joists; each hanging rib penetrates through the floor slab bottom templates at the same side, an auxiliary nut is screwed on each hanging rib, and the corresponding floor slab bottom templates are abutted against the bottom surfaces of the residual floor slabs at the same side through the steel backing plates by the auxiliary nuts.
Compared with the prior art, the formwork structure with the structure for reforming and reinforcing the existing building beam plate has the following advantages.
Firstly, the formwork device has less occupation of lower space, only comprises two rows of steel pipe columns which are distributed at intervals, and compared with the full-hall fastener type which is densely distributed and huge in size in the prior art, the formwork device has the advantages of small size, small occupied area and light dead weight, omits a large number of steel pipes and fastener frames, and has less material consumption; the lap joint assembly process is very convenient and quick, the steel pipe column is erected and the jack is driven to be firmly, and then the joist and each template are hoisted, so that the time and the labor are saved, the labor cost is obviously reduced, the construction period is shortened, and the economic benefit is improved; moreover, the formwork structure has firm and stable supporting effect, the supporting points of the steel pipe column and the jack are accurate, the supporting is provided for the overhanging end of the residual floor slab, and compared with a multi-point scattered supporting full-hall fastener, the formwork structure has more centralized and powerful supporting effect on the overhanging end, so that the supporting of a beam template and a floor slab by a hanging beam and joist system hung on the overhanging end is ensured to be firm and reliable; furthermore, assist nut and steel backing plate accurate support floor die plate, when avoiding pouring concrete, from leaking thick liquid in the gap between floor die plate and the residual floor, further promote the grout effect of structural beam and post-cast floor.
Preferably, two vertical rows of square wood ridges are arranged on two sides of the U-shaped template, a plurality of groups of side-pull double steel pipes are arranged on the outer side of each vertical row of square wood ridge, two tie bars are arranged between each group of left-pull double steel pipes and a corresponding group of right-pull double steel pipes, and each end of each tie bar is connected with the left-pull double steel pipes or the right-pull double steel pipes through side nuts and mountain-shaped buckles; the two tie bars are respectively arranged at the upper part and the middle part of the U-shaped template, and the bottoms of the two sides of the U-shaped template are also provided with step-by-step tightens for clamping; therefore, the structure that the two tie bars in the middle of the upper part are tied and the lower part is clamped by steps has firm tie effect, and is enough to resist the grouting pressure in the U-shaped template; and above-mentioned structure convenient assembling is swift, and the bottom is with the step by step of better dismouting to replace the drawknot muscle of below for this side direction drawknot structure's assembly process is more swift convenient.
As another preferable mode, the bottom end of each steel pipe column is welded with a steel end plate, a plurality of reinforcing rib plates are welded between each steel end plate and the side surface of the steel pipe column, and the reinforcing rib plates and the steel end plates form a base of the steel pipe column; like this, the existence of base can promote the stability of steel-pipe column, reduces the probability that its overturns, especially after the tensioning of steel-pipe column top jack, can more ensure that the steel-pipe column remains vertical, shelve steadily, further promotes the bearing stability to the end of encorbelmenting of residual floor.
As a further preferable mode, a first lug plate is welded in the front-back inner three directions of each steel pipe column, a steel cross beam is arranged between every two adjacent steel pipe columns, a second lug plate is arranged at the end part of the steel cross beam, and the first lug plate of the steel pipe column is detachably connected with the second lug plate of the steel cross beam through a pin shaft; after the characteristic is combined with the base at the bottom end of the steel pipe column, the verticality, the firmness and the integrity of each row of steel pipe columns can be further enhanced, the supporting stability of the formwork structure is greatly improved, and overturning is avoided; the connecting structure is rapid and convenient to assemble, and only the first lug plate and the second lug plate are aligned and the pin shaft is inserted, so that the universality of the whole formwork structure is effectively improved, workers can conveniently connect a proper number of steel pipe columns according to the size of a room, and accurate and sufficient support is provided for overhanging ends of residual floorslabs; moreover, the disassembly process is also convenient, so that the construction period is effectively shortened, and the invasion of the downstairs room is reduced.
Drawings
FIG. 1 is a schematic structural view of a formwork structure for retrofitting and reinforcing existing building beam panels according to the present utility model.
Fig. 2 is a schematic view of the structure of fig. 1 after being deflected by a certain angle.
FIG. 3 is a schematic illustration of the structure of the present utility model after casting concrete for structural beams and transitional floors for formwork structures for the reconstruction and reinforcement of existing building beams and slabs.
Fig. 4 is a partially enlarged structural schematic view of fig. 3.
The steel plate is characterized by comprising 1, a U-shaped template, 2, a floor bottom template, 3, a residual floor, 4, steel pipe columns, 5, a jack, 6, a steel end plate, 7, a reinforcing rib plate, 8, a first lug plate, 9, a steel beam, 10, a second lug plate, 11, a double-steel-pipe hanging beam, 12, a double-steel-pipe joist, 13, a hanging rib, 14, a main nut, 15, a mountain-shaped buckle, 16, square wood ribs, 17, auxiliary nuts, 18, a steel backing plate, 19, a side-pull double-steel pipe, 20, a drawknot rib, 21, a side nut, 22 and step-by-step tightening.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
As shown in figures 1-4, the formwork structure for reforming and reinforcing the existing building beam slab comprises a U-shaped formwork 1 for pouring a beam body and two floor bottom formworks 2 positioned on two sides of the U-shaped formwork 1. After the concrete in the middle of the span is dropped on the floor slab to be reinforced of the building, left and right residual floor slabs 3 and a hollow part in the middle are formed.
A row of steel pipe columns 4 are arranged below the overhanging ends of each residual floor slab 3, namely two rows of steel pipe columns 4 are respectively arranged below the overhanging ends of the left residual floor slab 3 and the right residual floor slab 3. The bottom end of each steel pipe column 4 is placed on the ground below the floor slab to be reinforced or the floor slab of the next layer, and the top end of each steel pipe column 4 on the left side is provided with a jack 5 for supporting the overhanging end of the residual floor slab 3 on the left side; the top end of each steel pipe column 4 on the right side is provided with a jack 5 for supporting the overhanging end of the residual floor slab 3 on the right side.
The bottom end of each steel pipe column 4 is welded with a steel end plate 6, a plurality of reinforcing rib plates 7 are welded between each steel end plate 6 and the side surface of the steel pipe column 4, and the reinforcing rib plates 7 and the steel end plates 6 form a base of the steel pipe column 4. The base rests on the floor or the next floor. The front and back inner three directions of each steel pipe column 4 are welded with a first lug plate 8, a steel cross beam 9 is arranged between every two adjacent steel pipe columns 4, a second lug plate 10 is arranged at the end part of the steel cross beam 9, and the first lug plate 8 of each steel pipe column 4 is detachably connected with the second lug plate 10 of the steel cross beam 9 through a pin shaft. The term "inside" means on the right side of the left steel pipe column 4 or on the left side of the right steel pipe column 4.
A plurality of groups of double steel pipe hanging beams 11 are spanned above the hollowed-out part, and two ends of each group of double steel pipe hanging beams 11 are respectively placed on overhanging ends of two residual floorslabs 3; a plurality of groups of double steel pipe joists 12 are arranged below the hollowed-out parts. The double steel pipe hanging beams 11 and the double steel pipe joists 12 are in one-to-one correspondence, and two hanging ribs 13 are arranged between each group of double steel pipe hanging beams 11 and the corresponding group of double steel pipe joists 12. The upper end of each hanging bar 13 is connected with the double steel pipe hanging beam 11 through two main nuts 14 and a mountain-shaped buckle 15; the lower end of each hanging bar 13 is connected with the double steel pipe joist 12 through two main nuts 14 and a gable buckle 15. The bottom of the U-shaped template 1 is placed on all the double steel pipe joists 12 through a transverse row of square wood ridges 16. The worker drills holes at the overhanging ends of the residual floor slabs 3 at each side for the hanging ribs 13 to pass through, and when the reinforcement transformation is finished, the hanging ribs 13 are drawn away and the holes are repaired.
Each hanging rib 13 also penetrates through the floor slab bottom templates 2 at the same side, two auxiliary nuts 17 are screwed on each hanging rib 13, and the left auxiliary nuts 17 tightly support the left floor slab bottom templates 2 with the bottom surface of the left residual floor slab 3 through the left steel backing plates 18; the right auxiliary nut 17 abuts the right floor bottom template 2 against the bottom surface of the right residual floor 3 through the right steel backing plate 18.
Two sides of the U-shaped template 1 are provided with left and right vertical rows of square wood edges 16, and the outer side of each vertical row of square wood edge 16 is provided with a plurality of groups of side-pull double steel pipes 19. Two tie bars 20 are arranged between each left-side double-pull steel pipe 19 and a corresponding right-side double-pull steel pipe 19, the left end of each tie bar 20 is connected with the left-side double-pull steel pipe 19 through two side nuts 21 and a mountain-shaped buckle 15, and the right end of each tie bar 20 is connected with the right-side double-pull steel pipe 19 through two side nuts 21 and the mountain-shaped buckle 15. The two tie bars 20 are respectively arranged at the upper part and the middle part of the U-shaped template 1, and a row of a plurality of step tightens 22 are arranged at the bottoms of the two sides of the U-shaped template 1. The row of multiple tightens 22 grip the bottom end of the U-shaped formwork 1.
As known from common knowledge, two ends of a newly-added structural beam for reinforcing a floor slab are lapped on existing upright posts or spandrel beams of a building, for example, ribs are planted on a front cross beam and a rear cross beam of a room frame to be reinforced, and the planted ribs are lapped and anchored with main ribs of the newly-added structural beam, so that the newly-added structural beam can be lapped on the existing front and rear spandrel beams.
Claims (4)
1. A formwork structure for reforming and reinforcing an existing building beam slab comprises a U-shaped formwork for pouring a beam body and two floor bottom formworks positioned on two sides of the U-shaped formwork; the floor slab to be reinforced of the building comprises left and right residual floor slabs and a hollow part in the middle; the method is characterized in that: a row of steel pipe columns are arranged below the overhanging end of each residual floor slab, the bottom ends of the steel pipe columns are placed on the ground or the floor slab of the next layer, and a jack for supporting the overhanging end of each residual floor slab is arranged at the top end of each steel pipe column; a plurality of groups of double-steel-pipe hanging beams are spanned above the hollowed-out part, and a plurality of groups of double-steel-pipe joists are arranged below the hollowed-out part; two hanging ribs are arranged between each group of double steel pipe hanging beams and a corresponding group of double steel pipe joists, and each end of each hanging rib is connected with the double steel pipe hanging beam or the double steel pipe joist through a main nut and a mountain-shaped buckle; the U-shaped template is placed on the double steel pipe joists; each hanging rib penetrates through the floor slab bottom templates at the same side, an auxiliary nut is screwed on each hanging rib, and the corresponding floor slab bottom templates are abutted against the bottom surfaces of the residual floor slabs at the same side through the steel backing plates by the auxiliary nuts.
2. The formwork structure for retrofitting an existing building beam panel of claim 1, wherein: two vertical rows of square wood edges are arranged on two sides of the U-shaped template, a plurality of groups of side-pull double steel pipes are arranged on the outer side of each vertical row of square wood edge, two tie bars are arranged between each group of left-side-pull double steel pipes and a corresponding group of right-side-pull double steel pipes, and each end of each tie bar is connected with the left-side or right-side-pull double steel pipes through side nuts and mountain-shaped buckles; the two tie bars are respectively arranged at the upper part and the middle part of the U-shaped template, and the bottoms of the two sides of the U-shaped template are also provided with step-by-step tightens for clamping.
3. The formwork structure for retrofitting an existing building beam panel of claim 1, wherein: and a steel end plate is welded at the bottom end of each steel pipe column, a plurality of reinforcing rib plates are welded between each steel end plate and the side surface of the steel pipe column, and the reinforcing rib plates and the steel end plates form a base of the steel pipe column.
4. A formwork structure for retrofitting an existing building beam panel in accordance with claim 3, wherein: the front and rear inner three directions of each steel pipe column are welded with first lug plates, a steel cross beam is arranged between every two adjacent steel pipe columns, the end part of the steel cross beam is provided with second lug plates, and the first lug plates of the steel pipe columns are detachably connected with the second lug plates of the steel cross beam through pin shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321443643.4U CN220150984U (en) | 2023-06-07 | 2023-06-07 | A formwork structure for existing building beam slab transformation consolidates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321443643.4U CN220150984U (en) | 2023-06-07 | 2023-06-07 | A formwork structure for existing building beam slab transformation consolidates |
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| CN220150984U true CN220150984U (en) | 2023-12-08 |
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| CN202321443643.4U Active CN220150984U (en) | 2023-06-07 | 2023-06-07 | A formwork structure for existing building beam slab transformation consolidates |
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- 2023-06-07 CN CN202321443643.4U patent/CN220150984U/en active Active
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