CN107724583B - Hollow floor system and construction method - Google Patents
Hollow floor system and construction method Download PDFInfo
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- CN107724583B CN107724583B CN201710948225.3A CN201710948225A CN107724583B CN 107724583 B CN107724583 B CN 107724583B CN 201710948225 A CN201710948225 A CN 201710948225A CN 107724583 B CN107724583 B CN 107724583B
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 68
- 238000009941 weaving Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000004567 concrete Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000009940 knitting Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000009415 formwork Methods 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000011120 plywood Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000002787 reinforcement Effects 0.000 description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Revetment (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a hollow floor and a construction method, which comprises a first reinforcing mesh, a second reinforcing mesh and a core mold arranged between the first reinforcing mesh and the second reinforcing mesh, wherein the core mold is filled with a light material; a lower plate is fixedly arranged on the bottom wall of the weaving box and connected with the first reinforcing mesh by a fastener; an upper plate is hinged above the weaving box and connected with the second reinforcing mesh through fasteners, a connecting plate is arranged on the side wall of the weaving box, and the connecting plate and the upper plate are fixed through a second connecting piece. The purpose of reducing the damage to the waterproof and fireproof protective film on the surface of the core mold is achieved.
Description
Technical Field
The invention relates to the field of building structures, in particular to a hollow floor and a construction method.
Background
The hollow floor slab is a cast-in-situ reinforced concrete hollow floor slab, which comprises reinforced bars, concrete and a core mould, wherein the core mould is embedded in the reinforced concrete, and is characterized in that the core mould is filled with light materials.
The current chinese patent of grant No. CN202954565U discloses a mounting structure of hollow superstructure mandrel of cast in situ concrete, including setting up the template on the square timber layer, the square timber layer is placed on the scaffold frame, sets up the bottom reinforcing bar on the template, and the bottom reinforcing bar passes through bottom iron wire and is connected with template or scaffold frame, and bottom reinforcing bar top sets up square pipe, and square pipe is gone up the interval and is set up U type card, sets up the mandrel between the adjacent U type card, and the upper portion iron wire is twined on the mandrel, and the ligature is on the bottom reinforcing bar, and the mandrel top sets up the upper reinforcing bar.
However, the core mold is fixedly connected to the bottom-layer reinforcing bar and the upper-layer reinforcing bar by iron wires, and the iron wires are required to be wound around the surface of the core mold for fixing the core mold, which may damage the waterproof and fireproof protective film on the surface of the core mold.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a hollow floor system which has the advantage of reducing the damage to a waterproof and fireproof protective film on the surface of a core mold.
In order to achieve the purpose, the invention provides the following technical scheme:
a hollow floor comprises a first reinforcing mesh, a second reinforcing mesh and a core mold arranged between the first reinforcing mesh and the second reinforcing mesh, wherein a light material is filled in the core mold, a woven box is sleeved on the outer wall of the core mold, and the woven box is a uncovered shell; a lower plate is fixedly arranged on the bottom wall of the weaving box and connected with the first reinforcing mesh by a fastener; an upper plate is hinged above the weaving box and connected with the second reinforcing mesh through fasteners, a connecting plate is arranged on the side wall of the weaving box, and the connecting plate and the upper plate are fixed through a second connecting piece.
By adopting the technical scheme, the lower plate is fixedly connected with the first reinforcing mesh, and after the upper plate is fixedly connected with the second reinforcing mesh, the positions of the woven box arranged between the upper plate and the lower plate and the core die in the woven box can not move. The damage to the surface of the core mould during construction is reduced by fixing the upper plate and the lower plate so as to fix the core mould between the first reinforcing mesh and the second reinforcing mesh.
Further, the fastener comprises a connecting cover and a fixing cover which can be fixedly connected with the side wall of the upper plate and the side wall of the lower plate, one end of the fixing cover is hinged with one end of the connecting cover, and the other end of the fixing cover is fixedly connected with the other end of the connecting cover through a first connecting piece.
Through adopting above-mentioned technical scheme, rotate and connect the lid and place the reinforcing bar between fixed lid and connection lid, then rotate and connect the lid and make it fixed through first connecting piece with fixed lid. The upper plate and the lower plate are fixed through the fasteners, so that the position stability of the weaving box is improved; meanwhile, the fixing mode of the fixing cover and the connecting cover is simple, and the labor intensity of an operator is reduced.
Further, the fastener inner wall is provided with the sheet rubber, and the side that the fastener was kept away from to the sheet rubber is provided with a plurality of archs.
Through adopting above-mentioned technical scheme, the static friction force between fastener and the reinforcing bar can be increased to sheet rubber and arch, has further increased the stability that the box is fixed with first reinforcing bar net and second reinforcing bar net to weave.
Furthermore, a pressing block is fixedly arranged on the upper plate close to the side wall of the core mold, and the lower end face of the pressing block is in contact with the upper end face of the core mold.
By adopting the technical scheme, the pressing block is in contact with the upper surface of the core mold, and after the upper plate is fixedly connected with the weaving box, the position of the core mold between the pressing block and the weaving box cannot move in the construction process, so that the damage to the waterproof and fireproof film on the surface of the core mold is reduced.
Furthermore, a plurality of square grooves are formed in the upper end face of the upper plate and the lower end face of the lower plate, and each square groove comprises a first square groove arranged in the middle and second square grooves arranged on two sides.
Through adopting above-mentioned technical scheme, when with upper plate and hypoplastron respectively with reinforcing bar fixed connection, insert the reinforcing bar and establish into square groove inside, can increase the area of contact of upper plate and hypoplastron and reinforcing bar, improve the fixed stability of weaving the box. Meanwhile, the square groove is sleeved on the outer wall of the reinforcing steel bar, a certain limiting effect is achieved on the fixing direction of the upper plate and the lower plate, and the upper plate and the lower plate are prevented from being deviated in the construction process.
Furthermore, a first magnetic part is fixedly arranged on the bottom wall of the first square groove, and a second magnetic part is fixedly arranged on the bottom wall of the second square groove.
By adopting the technical scheme, the steel bars and the square steel pipes are made of materials capable of attracting the magnetic pieces, the first magnetic pieces and the first steel bar mesh are pre-fixed in the process of fixing the lower plate, and then the lower plate is fixedly connected with the first steel bar mesh through the fastening pieces; reduce the movement of the position of the knitting box in the construction process.
Furthermore, the concave cavity is opened to the terminal surface that second magnetic part kept away from second square groove diapire.
Through adopting above-mentioned technical scheme, the cavity can increase the area of contact of magnetic part and reinforcing bar, reduces the removal of weaving the box position at the in-process of construction.
Furthermore, a support rod is detachably arranged between the side wall of the upper plate and the side wall of the lower plate.
Through adopting above-mentioned technical scheme, the bracing piece can further strengthen the fixed stability of upper plate and hypoplastron.
Another object of the present invention is to provide a construction method of a hollow floor having an advantage of reducing a position shift of a core mold during construction.
A construction method applied to the hollow floor comprises the following steps:
s100, adopting a fastener type steel pipe support system for vertical support of the template, and adopting wood ridges and steel pipes for horizontal support;
s200, when the template is installed, paving the template from one side, wherein the template installed later is tightly propped against the template installed first, and an adhesive tape sponge strip is adhered to the side edge of the larger part of the plate gap;
s300, when the first reinforcing mesh is bound, the specification of the binding wire is not less than 22#, and the binding wire head faces inwards;
s400, when the first reinforcing mesh is bound, drilling a pair of phi 4 small holes in a floor plywood beside a core die at the intersection of plate ribs at intervals of 500mm in a plum blossom shape by using a hand gun drill, inserting a No. 14 plate bottom anti-floating iron wire into the holes, and fixing the holes on steel pipes in a template support system;
s500, arranging square steel tubes on the plate span lower layer bidirectional reinforcing mesh sheets, placing the square steel tubes at equal intervals under each core mold, and effectively fixing the square steel tubes with the plate bottom reinforcing mesh sheets by using iron wires, wherein the square steel tubes are guaranteed to be fixed along the direction vertical to the core molds during construction;
s600, laying the hydroelectric pipelines in the floor slab below the core die as much as possible, and enabling the hydroelectric pipelines to penetrate through the rib beam, wherein the main inlet pipe is arranged along the beam edge as much as possible;
s700, fixing the lower plate and the first reinforcing mesh, then placing the core mold into a woven box, rotating the upper plate to fix the upper plate and the woven box, and then fixedly connecting the two ends of the supporting rod with the upper plate and the lower plate respectively;
s800, arranging a special U-shaped positioning clip in each through rectangular steel pipe between the rib beams between the two core molds;
s900, laying a second reinforcing mesh and fixedly connecting the second reinforcing mesh with the upper plate;
s1000, pouring fine stone concrete into the hollow floor system, and then plastering and pressing the concrete before initial setting of the floor concrete;
s1100, removing the formwork according to the specifications and drawings, and timely transporting the removed formwork, steel pipes, wood ribs and the like away.
By adopting the technical scheme, the upper plate and the lower plate are fixed through the fasteners, so that the core mold is fixedly arranged between the first reinforcing mesh and the second reinforcing mesh. The damage to the waterproof and fireproof film on the surface of the core mould is reduced in the construction process.
Further, in step S800, a plurality of insertion holes are formed in the square steel tube, and a distance between two adjacent insertion holes is equal to a distance between two end portions of the U-shaped positioning clip; and the outer wall of the U-shaped positioning clip is contacted with the outer wall of the weaving box.
Through adopting above-mentioned technical scheme, with the fixed back of accomplishing of upper plate and hypoplastron, it is fixed with square steel pipe with U type location checkpost. The outer wall of the U-shaped positioning clip is in contact with the outer wall of the weaving box, so that the influence on concrete blanking caused by horizontal extrusion of the core mold in the construction process can be reduced.
In conclusion, the invention has the following beneficial effects:
1. by arranging the weaving box and the upper plate and the lower plate which are connected with the weaving box, after the upper plate is fixed with the first reinforcing mesh and the lower plate is fixed with the second reinforcing mesh, the position of the core mold placed in the weaving box cannot move;
2. the core mould is placed in the weaving box, so that the waterproof and fireproof films on the surface of the core mould cannot be damaged in the process of fixing the core mould, and the service life of the core mould is prolonged;
3. through set up the sheet rubber that has the arch in fastener inside, can increase the static friction between reinforcing bar and the fastener, reduce the removal of weaving box and mandrel position in the work progress.
Drawings
FIG. 1 is a schematic overall view of a hollow floor in an embodiment;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic overall view of the woven box of the embodiment, showing the connection relationship of the woven box with the upper and lower plates;
FIG. 4 is an enlarged view of portion B of FIG. 3;
fig. 5 is a sectional view of the woven box in the embodiment for showing the positional relationship of the core mold and the woven box.
In the figure: 1. a first reinforcing mesh; 11. vertically arranging; 2. a second reinforcing mesh; 3. a core mold; 4. weaving a box; 41. a connecting plate; 42. A second connecting member; 5. an upper plate; 51. briquetting; 6. a lower plate; 61. a support bar; 611. a third connecting member; 7. a fastener; 71. a fixed cover; 711. a fixed block; 72. a connecting cover; 73. a first connecting member; 74. a rubber sheet; 741. a protrusion; 8. a square groove; 81. a first square groove; 811. a first magnetic member; 82. a second square groove; 821. a second magnetic member; 8211. a concave cavity; 9. a square steel pipe; 91. an insertion hole; 92. u type location checkpost.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a hollow floor system, refer to fig. 1, which comprises a first reinforcing mesh 1 arranged at the bottommost layer, a second reinforcing mesh 2 arranged at the upmost layer and a plurality of weaving boxes 4. The first mesh reinforcement 1 and the second mesh reinforcement 2 have a plurality of reinforcing bars arranged in a staggered manner in the transverse direction and the longitudinal direction, and the weaving box 4 is fixedly arranged between the first mesh reinforcement 1 and the second mesh reinforcement 2.
Referring to fig. 1 and 2, the floor is divided into a plurality of vertical rows 11 along the arrangement direction of the weaving boxes 4, and a U-shaped positioning clip 92 is arranged between two adjacent weaving boxes 4 in any vertical row 11. The bottom of the knitting box 4 is connected with a square steel tube 9, and the end part of the square steel tube 9 corresponding to the U-shaped positioning clip 92 is provided with an insertion hole 91. The U-shaped positioning clips 92 are inserted into the insertion holes 91 and are in contact with the side walls of the weaving boxes 4 on two sides, so that the weaving boxes 4 are separated from each other, and the influence on the concrete blanking and pouring due to horizontal extrusion of the weaving boxes 4 in the construction process is reduced.
Referring to fig. 3, a lower plate 6 is welded to the lower portion of the woven box 4, and the lower plate 6 is fixedly connected to the first mesh reinforcement 1 (see fig. 1) by fasteners 7. An upper plate 5 is hinged above the weaving box 4, and the upper plate 5 is fixedly connected with the second reinforcing mesh 2 (refer to fig. 1) through a fastener 7.
Referring to fig. 3 and 4, the fastening member 7 includes a fixing cover 71 and a connection cover 72 engaged with the fixing cover 71, one end of the fixing cover 71 is hinged to one end of the connection cover 72, and the other end of the fixing cover 71 is fixedly connected to the other end of the connection cover 72 using a first connection member 73. In this embodiment, the first connecting member 73 is a bolt, and may also be a screw, a rivet, a pin, or the like. The outer wall of the fixed cover 71 is provided with a fixed block 711 in a protruding way, and the side wall of the fixed block 711 and the end surface of the fixed cover 71 are welded with the side wall of the knitting box 4.
Referring to fig. 3 and 4, in order to increase the static friction between the rebar and the fastener 7, a rubber sheet 74 is bonded to the inner wall of the fastener 7. The rubber sheet 74 is provided with a plurality of protrusions 741 on the side surface close to the steel bar.
Referring to fig. 3, a plurality of support rods 61 are fixedly connected between the upper plate 5 and the lower plate 6, and in this embodiment, 4 support rods 61 are provided. Both ends of the support rod 61 are fixedly connected to the upper plate 5 and the lower plate 6 by a third connecting member 611, respectively. In this embodiment, the third connecting member 611 is a bolt, and may also be a screw, a rivet, a pin, or the like.
Referring to fig. 5, a plurality of square grooves 8 are formed at the upper end of the upper plate 5 and the bottom of the lower plate 6, and the square grooves 8 extend in a direction parallel to the vertical row 11 (see fig. 1). The square groove 8 includes a first square groove 81 formed in the middle and second square grooves 82 formed in both sides, a first magnetic member 811 is fixedly connected to the groove bottom of the first square groove 81, and a square steel pipe 9 (see fig. 1) is inserted through the first square groove 81. In this embodiment, the square steel tube 9 is made of a rigid material that can be attracted by the first magnetic member 811.
Referring to fig. 5, a second magnetic member 821 having the same length as the second square groove 82 is fixedly connected to the second square groove 82, and the second magnetic member 821 can be fixedly connected to the first mesh reinforcement 1 because the steel bar constituting the first mesh reinforcement 1 (see fig. 1) is made of iron material. In order to increase the contact area between the second magnetic member 821 and the steel bar, a concave cavity 8211 matched with the steel bar is formed in the side wall of the second magnetic member 821, and the depth of the concave cavity 8211 is equal to the radius of the steel bar. While ensuring that the inner wall of the recess 8211 is on the same curved surface as the inner wall of the fixing cover 71.
Referring to fig. 5, the knitting box 4 is a case without a cover, and a connecting plate 41 is welded to an outer wall of the knitting box 4 near the opening. One side of the bottom wall of the upper plate 5 is hinged with the side wall of the knitting box 4 far away from the connecting plate 41, and the other side of the bottom wall of the upper plate 5 is contacted with the upper surface of the connecting plate 41 and is fixedly connected with the same through a second connecting piece 42. In this embodiment, the second connecting member 42 is a bolt, and may be a screw, a rivet, a pin, or the like.
Referring to fig. 5, a core mold 3 is placed in a woven box 4, a side wall of the core mold 3 is in contact with the inside of the woven box 4, and the inside of the core mold 3 is filled with a lightweight material.
Referring to fig. 5, the upper plate 5 is protrusively provided with a pressing piece 51 near the side wall of the knitting box 4, and a lower end surface of the pressing piece 51 is in contact with the upper surface of the core mold 3. In order to facilitate the opening and closing of the upper plate 5, the side wall of the pressing block 51 near the opening side is provided with a chamfer.
The working principle is as follows:
first, the first reinforcing mesh 1 is laid, then the square steel tube 9 and the reinforcing steel bar are fixedly connected by using iron wires, then the second square groove 82 is matched with the reinforcing steel bar, and meanwhile, the first square groove 81 is matched with the square steel tube 9. The lower plate 6 is then fixedly connected to the first mesh reinforcement 1 using fasteners 7.
The core mold 3 is placed inside the woven box 4, and then the upper plate 5 is rotated to fixedly connect the connection plate 41 with the upper plate 5 using the second connection member 42. Then, the two ends of the support rod 61 are respectively and fixedly connected with the side walls of the upper plate 5 and the lower plate 6 through the third connecting member 611.
The same procedure and method are used to complete the fixing of all the mandrels 3. Then, a plurality of U-shaped positioning clips 92 are fixedly connected with the square steel tube 9 in sequence. Then, a second mesh reinforcement 2 is built above the upper plate 5, the reinforcing steel bars in the second mesh reinforcement 2 are inserted into the square groove 8, and then the upper plate 5 and the second mesh reinforcement 2 are fixedly connected through a fastener 7.
Example 2:
a construction method applied to the hollow floor comprises the following steps:
s100, adopting a fastener type steel pipe support system for vertical support of the template, and adopting wood ridges and steel pipes for horizontal support;
s200, when the template is installed, paving the template from one side, wherein the template installed later is tightly propped against the template installed first, and an adhesive tape sponge strip is adhered to the side edge of the larger part of the plate gap;
s300, when the first reinforcing mesh 1 is bound, the specification of the binding wire is not less than 22#, and the binding wire head faces inwards;
s400, when the first reinforcing mesh 1 is bound, drilling a pair of phi 4 small holes in a floor plywood beside a core die 3 at the intersection of plate ribs at intervals of 500mm in a plum blossom shape by using a hand gun drill, inserting a No. 14 plate bottom anti-floating iron wire into a hole 91, and fixing the hole on a steel pipe in a template support system;
s500, arranging square steel tubes 9 on the plate span lower layer bidirectional steel bar net piece, placing the square steel tubes 9 at equal intervals under each core mould 3, and effectively fixing the square steel tubes 9 with the plate bottom steel bar net piece by using iron wires, wherein the square steel tubes 9 are fixed along the direction vertical to the core mould 3 during construction;
s600, laying the hydroelectric pipelines in the floor slab, wherein the hydroelectric pipelines are placed below the core die 3 as much as possible and can also penetrate through the rib beam, and the main inlet pipe is arranged along the beam edge as much as possible;
s700, fixing the lower plate 6 and the first reinforcing mesh 1, then placing the core mold 3 into the woven box 4, rotating the upper plate 5 to fix the upper plate 5 and the woven box 4, and then fixedly connecting the two ends of the support rod 61 with the upper plate 5 and the lower plate 6 respectively;
s800, arranging a special U-shaped positioning clip in each through rectangular steel pipe 9 between the rib beams between the two core molds 3;
s900, laying a second reinforcing mesh 2 and fixedly connecting the second reinforcing mesh 2 with the upper plate 5;
s1000, pouring fine stone concrete into the hollow floor system, and then plastering and pressing the concrete before initial setting of the floor concrete;
s1100, removing the formwork according to the specifications and drawings, and timely transporting the removed formwork, steel pipes, wood ribs and the like away.
Claims (4)
1. The utility model provides a hollow superstructure, includes first reinforcing bar net (1), second reinforcing bar net (2) and sets up mandrel (3) between first reinforcing bar net (1) and second reinforcing bar net (2), the mandrel (3) intussuseption is filled with light material, its characterized in that: the outer wall of the core mold (3) is sleeved with a weaving box (4), and the weaving box (4) is a uncovered shell; a lower plate (6) is fixedly arranged on the bottom wall of the weaving box (4), and the lower plate (6) is connected with the first reinforcing mesh (1) through a fastener (7); an upper plate (5) is hinged above the weaving box (4), the upper plate (5) is connected with the second reinforcing mesh (2) through a fastener (7), a connecting plate (41) is arranged on the side wall of the weaving box (4), and the connecting plate (41) and the upper plate (5) are fixed through a second connecting piece (42);
the fastener (7) comprises a connecting cover (72) and a fixing cover (71) which can be fixedly connected with the side wall of the upper plate (5) and the side wall of the lower plate (6), one end of the fixing cover (71) is hinged with one end of the connecting cover (72), and the other end of the fixing cover (71) is fixedly connected with the other end of the connecting cover (72) through a first connecting piece (73);
the rubber sheet (74) is arranged on the inner wall of the fastener (7), and a plurality of protrusions (741) are arranged on the side face, away from the fastener (7), of the rubber sheet (74);
a pressing block (51) is fixedly arranged on the upper plate (5) close to the side wall of the core mold (3), and the lower end face of the pressing block (51) is in contact with the upper end face of the core mold (3);
the upper end surface of the upper plate (5) and the lower end surface of the lower plate (6) are provided with a plurality of square grooves (8), and each square groove (8) comprises a first square groove (81) arranged in the middle and second square grooves (82) arranged at two sides;
a first magnetic part (811) is fixedly arranged on the bottom wall of the first square groove (81), and a second magnetic part (821) is fixedly arranged on the bottom wall of the second square groove (82);
the end face, away from the bottom wall of the second square groove (82), of the second magnetic part (821) is provided with a concave cavity (8211).
2. The hollow floor system according to claim 1, wherein: and a support rod (61) is detachably arranged between the side wall of the upper plate (5) and the side wall of the lower plate (6).
3. A construction method for applying the hollow floor system of claim 2, comprising the steps of:
s100, adopting a fastener type steel pipe support system for vertical support of the template, and adopting wood ridges and steel pipes for horizontal support;
s200, when the template is installed, paving the template from one side, wherein the template installed later is tightly propped against the template installed first, and an adhesive tape sponge strip is adhered to the side edge of the larger part of the plate gap;
s300, when the first reinforcing mesh (1) is bound, the specification of the binding wire is not less than 22#, and the binding wire head faces inwards;
s400, when the first reinforcing mesh (1) is bound, drilling a pair of phi 4 small holes in a floor plywood beside a core die (3) at the intersection of plate ribs at intervals of 500mm in a plum-blossom shape by using a hand gun drill, inserting a 14# plate bottom anti-floating iron wire into a hole (91), and fixing the hole on a steel pipe in a template support system;
s500, arranging square steel pipes (9) on the plate span lower layer bidirectional reinforcing mesh sheets, placing the square steel pipes (9) at equal intervals under each core mold (3), and effectively fixing the square steel pipes and the plate bottom reinforcing mesh sheets by using iron wires, wherein the square steel pipes (9) are fixed along the direction vertical to the core molds (3) during construction;
s600, laying the hydroelectric pipeline in the floor slab below the core mould (3) or passing through a rib beam, and arranging a main inlet pipe along the beam edge;
s700, fixing a lower plate (6) and a first reinforcing mesh (1), then placing a core mold (3) into a woven box (4), rotating an upper plate (5) to fixedly connect the upper plate (5) and the woven box (4), and then fixedly connecting two ends of a supporting rod (61) with the upper plate (5) and the lower plate (6) respectively;
s800, arranging a special U-shaped positioning clip in each through rectangular steel pipe (9) between the rib beams between the two core molds (3);
s900, laying a second reinforcing mesh (2) and fixedly connecting the second reinforcing mesh (2) with the upper plate (5);
s1000, pouring fine stone concrete into the hollow floor system, and then plastering and pressing the concrete before initial setting of the floor concrete;
and S1100, removing the formwork according to the specification and the drawing, and timely transporting away the removed formwork, the steel pipe and the wood beam.
4. A construction method according to claim 3, wherein: in the step S800, a plurality of insertion holes (91) are formed in the square steel pipe (9), and the distance between every two adjacent insertion holes (91) is equal to the distance between two end parts of the U-shaped positioning clamp (92); and the outer wall of the U-shaped positioning clip (92) is contacted with the outer wall of the knitting box (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948225.3A CN107724583B (en) | 2017-10-12 | 2017-10-12 | Hollow floor system and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948225.3A CN107724583B (en) | 2017-10-12 | 2017-10-12 | Hollow floor system and construction method |
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| CN107724583A CN107724583A (en) | 2018-02-23 |
| CN107724583B true CN107724583B (en) | 2020-03-06 |
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| CN108277919A (en) * | 2018-03-23 | 2018-07-13 | 昆山生态屋建筑技术有限公司 | A kind of hollow floor and its construction technology |
| CN112942657B (en) * | 2021-01-18 | 2022-07-26 | 浙江恒昌建设有限公司 | Anti-floating structure of cast-in-place concrete hollow floor and construction method thereof |
| CN113802745B (en) * | 2021-08-24 | 2023-03-24 | 中铁七局集团有限公司 | Construction method of thin-wall concrete hollow floor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1966880A (en) * | 2005-07-21 | 2007-05-23 | 邱则有 | Hollow member |
| US8707640B2 (en) * | 2010-11-19 | 2014-04-29 | Bosley Wright | Removable bulkheads for building fixtures |
| CN204238397U (en) * | 2014-10-11 | 2015-04-01 | 中厦建设有限公司 | A kind of grid of fixing filler |
| CN106836597B (en) * | 2017-03-21 | 2019-02-26 | 中国航空规划设计研究总院有限公司 | A kind of fixed device of cassette ceiling core model and its construction method |
| CN106836599B (en) * | 2017-04-13 | 2024-01-12 | 青岛一建集团有限公司 | A new type of crack-resistant lightweight mandrel and its construction method |
-
2017
- 2017-10-12 CN CN201710948225.3A patent/CN107724583B/en not_active Expired - Fee Related
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| CN107724583A (en) | 2018-02-23 |
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