CN114523564A - Disassembly-free foam core mold prefabricated hollow slab beam and preparation method thereof - Google Patents
Disassembly-free foam core mold prefabricated hollow slab beam and preparation method thereof Download PDFInfo
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- CN114523564A CN114523564A CN202111605801.7A CN202111605801A CN114523564A CN 114523564 A CN114523564 A CN 114523564A CN 202111605801 A CN202111605801 A CN 202111605801A CN 114523564 A CN114523564 A CN 114523564A
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- foam core
- steel bars
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- core mold
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- 239000006260 foam Substances 0.000 title claims abstract description 130
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 103
- 239000010959 steel Substances 0.000 claims abstract description 103
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 4
- 238000009417 prefabrication Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003014 reinforcing effect Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
- B28B23/024—Supporting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/168—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes for holders or similar hollow articles, e.g. vaults, sewer pits
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The application relates to a disassembly-free foam core die prefabricated hollow slab beam and a preparation method thereof, relating to the technical field of hollow slab beam prefabrication; the prefabricated steel plate comprises a prefabricated pedestal, bottom plate steel bars, web plate steel bars, top plate steel bars, side molds and end molds; a cavity is enclosed among the bottom plate steel bars, the web plate steel bars and the top plate steel bars, and internal concrete cushion blocks are arranged on the side walls of the bottom plate steel bars, the web plate steel bars and the top plate steel bars, which are close to the cavity; the side walls of the bottom plate steel bars and the web plate steel bars, which are far away from the cavity, are provided with external concrete cushion blocks, and the prefabricated pedestal and the side molds are respectively abutted with the external concrete cushion blocks in corresponding positions; a foam core mold is arranged in the cavity, and all internal concrete cushion blocks are abutted against the foam core mold; the foam core mould also comprises a power supply, a first lead electrically connected to the positive pole of the power supply, a second lead electrically connected to the negative pole of the power supply, and a warning lamp electrically connected to the electric connection position of the first lead and the power supply, wherein the first lead and the second lead are fixedly connected to the bottom surface of the foam core mould; this application has the effect that improves the prefabrication efficiency to hollow plate roof beam.
Description
Technical Field
The application relates to the technical field of hollow slab beam prefabrication, in particular to a disassembly-free foam core die prefabricated hollow slab beam and a preparation method thereof.
Background
Along with the continuous development of national economy, the road traffic has gradually remarkable role in national economy, and is also greatly developed as a junction-bridge in road traffic; the upper parts of the medium and small span bridges mostly adopt prestressed and non-prestressed hollow slab beam assembly structures.
A related Chinese patent with an authorization publication number of CN202622969U discloses a die for prefabricating a hollow slab beam by a pull-out type steel core die, which comprises a prefabricating pedestal and an up-and-down through annular steel outer die, wherein the prefabricating pedestal is provided with a steel reinforcement framework and the pull-out type steel core die positioned in the steel reinforcement framework, the steel reinforcement framework and the steel core die are both horizontally arranged and extend forwards and backwards, and the steel reinforcement framework is arranged around the ground on the top surface of the steel core die and the side surfaces of the two sides along the length direction; a corrugated pipe parallel to the steel core die is arranged at the intersection of the bottom plate reinforcing steel layer and the web reinforcing steel layer, and a steel strand is arranged in the corrugated pipe in a penetrating manner; during installation, a bottom plate reinforcing steel bar layer, a web reinforcing steel bar layer and a concrete cushion block are bound on a prefabricated pedestal, a steel outer mold and an end anchor cushion plate are installed, the bottom of the steel outer mold is attached to the peripheral edge of the prefabricated pedestal, a steel core mold is hoisted and placed on the bottom plate reinforcing steel bar layer, a top plate steel bar framework and the concrete cushion block are bound, a ground anchor is buried at the front end of the prefabricated pedestal, a winch is arranged, concrete is directly poured from the top opening of the steel outer mold, when the concrete strength of the hollow plate girder reaches 5MP, a steel wire rope connected with the winch is fixed in the steel core mold, the steel core mold is pulled out by starting the winch, the steel outer mold is detached, and finally steel strand prestress tensioning, pore grouting and anchor sealing are performed.
In view of the above-mentioned related art, the inventors found that the operation of manually assembling and disassembling the steel core mold is cumbersome, reducing the construction efficiency.
Disclosure of Invention
In order to solve the technical problems that the operation of disassembling and assembling an inner die during the prefabrication of a hollow beam slab always exists in the related art is complex, and the construction efficiency is reduced, the application provides a disassembly-free foam core die prefabricated hollow beam slab and a preparation method thereof.
In a first aspect, the application provides a demolition-free foam core precast hollow slab beam, which adopts the following technical scheme:
a disassembly-free foam core die prefabricated hollow slab beam comprises a prefabricated pedestal, bottom plate reinforcing steel bars, web reinforcing steel bars, top plate reinforcing steel bars, side dies and end dies; a cavity is enclosed among the bottom plate steel bars, the web plate steel bars and the top plate steel bars, and internal concrete cushion blocks are arranged on the side walls of the bottom plate steel bars, the web plate steel bars and the top plate steel bars, which are close to the cavity; the side walls of the bottom plate steel bars and the web plate steel bars, which are far away from the cavity, are provided with external concrete cushion blocks, and the prefabricated pedestal and the side die are respectively abutted with the external concrete cushion blocks in corresponding positions; a foam core die is arranged in the cavity, and all the internal concrete cushion blocks are abutted with the foam core die; the foam core mould is characterized by further comprising a power supply, a first lead electrically connected to the positive pole of the power supply, a second lead electrically connected to the negative pole of the power supply, and a warning lamp electrically connected to the position where the first lead is electrically connected with the power supply, wherein one ends of the first lead and the second lead, which are far away from the power supply, are fixedly connected to the bottom surface of the foam core mould.
By adopting the technical scheme, when in construction, the bottom plate reinforcing steel bars and the web plate reinforcing steel bars are tied on the prefabricated pedestal, the foam core mould is inserted between the bottom plate reinforcing steel bars and the web plate reinforcing steel bars, the top plate reinforcing steel bars are tied at the tops of the web plate reinforcing steel bars, the end moulds and the side moulds are installed on the periphery of the prefabricated pedestal, concrete is injected from gaps between the side moulds and the web plate reinforcing steel bars, when the concrete moves to the bottom of the foam core mould, one ends of the first lead wires and the second lead wires, which are far away from a power supply, are conducted through the concrete, at the moment, the warning lamps are lightened, so that the fact that the cavity below the foam core mould is filled with the concrete is judged, then the concrete is continuously poured until the height of the concrete is consistent with that of the side moulds, after the strength of the concrete reaches the specified requirement, the end moulds and the side moulds are detached, the foam core mould is left in the cavity without being taken out, and the construction process of the hollow beam slab is simplified, the construction efficiency is improved.
Preferably, the device further comprises a fixing assembly, wherein the fixing assembly comprises fixing columns symmetrically and fixedly connected to the bottom surface of the foam core mold, a first limiting plate sleeved outside the first lead, and a second limiting plate sleeved outside the outer side wall of the second lead; jacks are formed in the side walls, close to the foam core mold, of the fixing columns; the first lead is inserted into the jack of one of the fixed columns, and the second lead is inserted into the jack of the other fixed column; the jack is arranged along the length direction of the fixed column, and the first limiting plate or the second limiting plate is attached to the end part of the fixed column.
Through adopting above-mentioned technical scheme, through inserting first wire and second wire respectively in the jack and realize the convenient installation of first wire and foam mandrel, second wire and foam mandrel, the setting of first limiting plate and second limiting plate can prevent that first wire and second wire from breaking away from the jack along jack length direction, realizes the firm of being connected of first wire and foam mandrel, second wire and foam mandrel.
Preferably, the upper surface of the internal concrete cushion block positioned on the bottom plate steel bar is provided with a positioning groove for inserting the fixing column.
Through adopting above-mentioned technical scheme, when a plurality of foam core moulds are placed to needs on the bottom plate reinforcing bar, according to current mounting means, the foam core mould is arranged along bottom plate reinforcing bar length direction in order to place the relative bottom plate reinforcing bar length direction of adjacent foam core mould and appear the skew this moment, can insert the fixed column and locate in the constant head tank of inside concrete cushion block, can play the positioning action in the installation of foam core mould on the one hand, on the other hand also can play the effect of placing the foam core mould along bottom plate reinforcing bar length direction skew.
Preferably, the outer side walls of the first lead and the second lead are provided with protective cushion layers, the protective cushion layers close to the fixing columns are inserted into the insertion holes, and the first limiting plate and the second limiting plate are located on the peripheries of the protective cushion layers at the corresponding positions.
Through adopting above-mentioned technical scheme, the setting up of protection bed course can play the effect of protection first wire and second wire, prevents that first wire and second wire fracture or receive external environment influence damaged, and then influences the conductivity of the circuit of power, first wire, second wire and warning light.
Preferably, the side wall of the foam core mold is provided with a placement groove, and the first lead, the second lead and the protective cushion layer are inserted into the placement grooves at corresponding positions; the side wall of the protection cushion layer is inserted with a support bar in a penetrating way, the length direction of the support bar is vertical to the length direction of the protection cushion layer, and the end part of the support bar is fixedly connected with the inner wall of the placement groove.
Through adopting above-mentioned technical scheme, the setting of support bar can play the effect of supporting first wire and second wire, prevents that the concrete from dragging first wire or second wire at the removal in-process, leads to the junction of first wire, power, warning light and second wire to be dragged cracked condition, plays the effect of the connection return circuit of protection first wire, circuit, warning light and second wire.
Preferably, the fixing component further comprises rotating rods symmetrically rotatably connected to the inner wall of each jack, a torsion spring sleeved outside each rotating rod, and a sealing plate fixedly connected to the outside of each rotating rod; one end of the torsion spring is fixedly connected to the outer side wall of the rotating rod, the other end of the torsion spring is fixedly connected to the inner wall of the jack, and the side walls of the sealing plate in the jack are mutually attached.
Through adopting above-mentioned technical scheme, when inserting first wire and second wire in the jack, two seal the board and receive the extrusion of first wire or second wire and drive the bull stick and rotate, thereby make two seal the board and rotate towards the direction of keeping away from each other, two gap grow of the part of sealing the board each other and laminating this moment, the torsional spring rotates in-process deformation at the bull stick, first wire or second wire then insert in the jack from the gap department that corresponds, after first wire or second wire are located the jack inside, seal the support pressure that the board received and disappear, the torsional spring that is in deformation state this moment resumes initial condition, and drive the bull stick reversal, so that two seal the board lateral wall and laminate again, prevent the condition that first wire or second wire break away from in the jack.
Preferably, the fixing assembly further comprises a plugging rod and a spring, the bottom wall of the foam core mold is provided with a slot for the plugging rod and the spring to be inserted, one end of the spring is connected to the bottom wall of the slot, and the other end of the spring is connected to the end part of the plugging rod; be close to each other the breach of stepping down that is linked together with the jack is seted up to first limiting plate and second limiting plate lateral wall, first wire tip or second wire tip run through the jack and lie in the breach of stepping down, the one end that the spring department was kept away from to the shutoff pole is inserted and is located between the breach of stepping down, the breach inner wall of stepping down is laminated in the shutoff pole lateral wall.
Through adopting above-mentioned technical scheme, first wire end and second wire end all are located the breach of stepping down, and when spring initial condition, the shutoff pole is inserted and is located the breach of stepping down, in order to block the breach of stepping down through the shutoff pole, play the effect of protection prefabricated foam core mould, reduce first wire and second wire after installing on the foam core mould, and in the storage process, first wire end or second wire end moist in the storage process appears, then influence the power, first wire, the condition of the continuity of the circuit of second wire and warning light, at the in-process of concreting, the concrete removes to shutoff pole department, and go up the shutoff pole, make shutoff pole lower extreme break away from the breach of stepping down and insert in the slot, the concrete is full of the breach of stepping down this moment, and then make first wire and second wire realize switching on through the concrete.
Preferably, the bottom of the foam core mould is symmetrically provided with inclined planes, the length direction of each inclined plane is parallel to the length direction of the foam core mould, the inclined planes are positioned at two sides of the length direction of the center point of the foam core mould, and one side of each inclined plane, which is close to the center point of the foam core mould, is inclined upwards along the height direction of the foam core mould; one of the fixing columns is arranged on one of the inclined planes, the other fixing column is arranged on the other inclined plane, and the fixing columns are located on one side, close to the center point of the foam core mould, of the inclined plane.
By adopting the technical scheme, the fixed column is positioned on one side of the inclined plane close to the central point of the foam core mould, and one side of the inclined plane close to the central point of the foam core mould is upwards arranged along the height direction of the foam core mould, namely the fixed column is positioned at the highest point on the ground of the foam core mould, after the concrete moves to the lower part of the foam core mould, in the concrete pouring process, the moving track of the concrete must follow the criterion from low to high, so when the concrete reaches the fixed column, the situation that the cavity below the fixed column is full of the concrete must be indicated, and the accuracy of judging that the cavity below the foam core mould is full of the concrete by the lightening of the warning lamp is ensured.
Preferably, the middle part of each inclined plane is provided with a fixing column inserting fixing groove for inserting a corresponding position, each inclined plane comprises first inclined planes symmetrically arranged on two sides of the fixing groove and second inclined planes symmetrically arranged on two sides of the fixing groove, and one end of each first inclined plane close to the fixing column and one end of each second inclined plane close to the fixing column are both arranged in an upward inclined mode along the height direction of the foam core mold.
Through adopting above-mentioned technical scheme, because the inclined plane sets up along foam core mould length direction, consequently in order to guarantee the fixed column for the position that the concrete finally reachd, can set up first inclined plane, second inclined plane and fixed slot, further guarantee when the concrete reachs fixed column department, explain to be located the cavity internal tendency of fixed column below and must have been sufficient with the concrete, further guarantee to get up through the warning light and judge the accuracy that the concrete has been sufficient with cavity below the foam core mould.
In a second aspect, the application also provides a method for preparing a demolition-free foam core precast hollow slab beam, which comprises the following steps:
binding a plurality of external concrete cushion blocks and internal concrete cushion blocks on the bottom plate steel bars and the web plate steel bars, binding a plurality of internal concrete cushion blocks on the side walls of the top plate steel bars, binding bottom plate steel bars on the upper surface of the prefabricated pedestal, and binding web plate steel bars on two sides of the bottom plate steel bars respectively;
sequentially placing the foam core mold on the upper surface of the bottom plate reinforcing steel bars along the length direction of the bottom plate reinforcing steel bars so that the foam core mold is positioned between the web plate reinforcing steel bars; binding the top plate steel bars to the upper surfaces of the web plate steel bars;
side moulds are fixedly installed on two sides of the prefabrication pedestal, end moulds are fixedly installed on two ends of the prefabrication pedestal, concrete is injected from a gap between each side mould and a web plate steel bar, and the concrete moves to the position below the foam core mould along the height direction of the foam core mould and fills a cavity below the foam core mould;
when the concrete moves to the position below the plugging rod, the concrete upwards supports and pushes the plugging rod, so that the plugging rod is separated from the abdicating notch and is inserted into the slot, the concrete is filled with the abdicating notch, the first lead, the second lead, the power supply, the warning lamp and the concrete form a conducting circuit, and the warning lamp is lighted, so that a constructor can know that the concrete is filled with a cavity below the foam core mold at present;
and continuously pouring concrete until the upper surface of the concrete is level with the upper surfaces of the side moulds, stopping pouring, and removing the side moulds and the end moulds when the strength of the concrete reaches a preset standard to finish the manufacture of the hollow slab beam.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the foam core mold replaces a steel core mold, and the foam core mold is left in the cavity and does not need to be taken out, so that the construction process of the hollow beam slab is simplified, and the construction efficiency is improved;
2. when the concrete removed to foam core mould bottom, the one end that power department was kept away from to first wire and second wire switched on through the concrete, and the warning light lights this moment to judge and obtain the sufficient concrete in the cavity of foam core mould below department, so that constructor knows the pouring progress of concrete, the colleague also can avoid concrete and foam core mould to come to nothing.
Drawings
Fig. 1 is a schematic structural view of a demolition-free foam core mold precast hollow slab beam in the embodiment.
Fig. 2 is a sectional view of a demolition-free foam core precast hollow slab girder according to an embodiment.
Fig. 3 is a schematic view for embodying the bottom structure of the foam core mold in the embodiment.
Fig. 4 is a schematic diagram for embodying the internal structure of the placement groove in the embodiment.
Fig. 5 is a cross-sectional view for showing a positional relationship among the fixing column, the first limiting plate, the second limiting plate and the plugging rod in the embodiment.
Fig. 6 is an enlarged schematic view of the structure of part a in fig. 3.
Description of reference numerals: 1. prefabricating a pedestal; 2. a bottom plate steel bar; 21. an external concrete cushion block; 22. an internal concrete cushion block; 221. positioning a groove; 3. web steel bars; 4. roof reinforcing steel bars; 5. side mould; 6. end die; 7. a chamber; 8. a foam core mold; 81. a placing groove; 82. an inclined surface; 821. a first inclined plane; 822. a second inclined plane; 823. fixing grooves; 83. a fixing assembly; 831. fixing a column; 8311. a jack; 832. a first limit plate; 8321. a abdication gap; 833. a second limiting plate; 834. a rotating rod; 835. a torsion spring; 836. a sealing plate; 837. a plugging rod; 838. a spring; 84. a slot; 9. a power source; 91. a warning light; 92. a first conductive line; 921. a protective cushion layer; 9211. a supporting strip; 93. a second conductive line.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses exempt from to tear open prefabricated hollow slab beam of foam mandrel. Referring to fig. 1 and 2, the disassembly-free foam core die prefabricated hollow slab beam comprises a prefabricated pedestal 1, bottom plate steel bars 2, web plate steel bars 3 and top plate steel bars 4, wherein the bottom plate steel bars 2, the web plate steel bars 3 and the top plate steel bars 4 jointly enclose a cavity 7, and a foam core die 8 is inserted into the cavity 7; end molds 6 are arranged at two ends of the prefabricating pedestal 1, the end molds 6 are arranged along the vertical direction, and the side walls of the end molds 6 are attached to the end walls of the prefabricating pedestal 1; the two sides of the prefabricating pedestal 1 are provided with side molds 5, the side molds 5 and the end molds 6 are steel templates, the upper ends of the two side molds 5 are fixedly connected through steel pull rods, and the end molds 6 are located between the two side molds 5 so as to clamp the end molds 6 through the side molds 5.
Referring to fig. 2, a plurality of external concrete cushion blocks 21 are bound on the side walls of the bottom plate steel bars 2 facing the prefabrication pedestal 1 and the side walls of the web steel bars 3 facing the side molds 5, and the prefabrication pedestal 1 and the side molds 5 are abutted against the side walls of the external concrete cushion blocks 21 at corresponding positions; roof reinforcing bar 4, bottom plate reinforcing bar 2 and web reinforcing bar 3 all bind towards the lateral wall of 7 departments of cavity and have a plurality of inside concrete cushion 22, inside concrete cushion 22 and 8 looks butt of foam mandrel, and inside concrete cushion 22 and outside concrete cushion 21 all are the crisscross setting of plum blossom-shaped.
Referring to fig. 2 and 3, the foam core mold 8 can be made of polystyrene foam of a new material, the bottom wall of the foam core mold 8 is symmetrically provided with inclined surfaces 82, the inclined surfaces 82 are positioned on two sides of the length direction of the center point of the foam core mold 8, the length direction of the inclined surfaces 82 is parallel to the length direction of the foam core mold 8, and one side of the inclined surfaces 82 close to the center point of the foam core mold 8 is inclined upwards along the height direction of the foam core mold 8; the fixing groove 823 is opened to the inclined surface 82 side wall, and inclined surface 82 is including first inclined surface 821 and the second inclined surface 822 that are located fixing groove 823 both sides, and first inclined surface 821 and second inclined surface 822 all set up in fixing groove 823 both sides symmetrically, and each inclined surface 82 includes two first inclined surfaces 821 and two second inclined surfaces 822, and first inclined surface 821 and second inclined surface 822 are close to the one end of fixing groove 823 department and all set up along 8 direction of height tilt up of foam mandrel.
Referring to fig. 2, 3 and 4, a power supply 9, a first lead 92 electrically connected to the positive pole of the power supply 9, a second lead 93 electrically connected to the negative pole of the power supply 9, and a warning light 91 connected to the electrical connection point of the first lead 92 and the power supply 9 are mounted on the upper surface of the foam core mold 8, and the warning light 91 may be an LED bulb; the outer surface of the first lead 92 is fixedly bonded with a protective cushion layer 921 along the circumferential direction, the side wall of the foam core mold 8 is provided with a placing groove 81, the placing groove 81 is arranged along the circumferential direction of the foam core mold 8, the placing groove 81 is communicated with the fixing groove 823, the first lead 92, the second lead 93 and the protective cushion layer 921 are all embedded in the placing groove 81, the side wall of the protective cushion layer 921 is penetrated and inserted with a support bar 9211, and the end part of the support bar 9211 is fixedly bonded on the inner wall of the placing groove 81.
Referring to fig. 3, 5 and 6, a fixing assembly 83 for fixing the first wire 92 and the second wire 93 to the bottom of the foam core mold 8 is disposed at the bottom of the foam core mold 8, and the fixing assembly 83 includes a fixing column 831 inserted into the fixing groove 823, a first limiting plate 832 sleeved on the outside of the protective cushion 921 corresponding to the first wire 92, and a second limiting plate 833 sleeved on the outside of the protective cushion 921 corresponding to the second wire 93; the side wall of the fixing column 831, which is close to the foam core mold 8, is fixedly bonded to the inner wall of the fixing groove 823, the side wall of the fixing column 831, which is close to the foam core mold 8, is provided with a jack 8311, the jack 8311 is arranged along the length direction of the foam core mold 8, the first conducting wire 92 and the second conducting wire 93, which are close to the fixing column 831, and the corresponding protective cushion 921 are inserted into the jack 8311, and the first limiting plate 832 and the second limiting plate 833 are attached to the end portion of the fixing column 831; locating groove 221 is formed in the upper surface of the internal concrete cushion block 22 located on the bottom plate steel bar 2 (refer to fig. 2), and one side, far away from the fixing groove 823, of the fixing column 831 is inserted into the locating groove 221.
Referring to fig. 3, 5 and 6, the fixing assembly 83 further includes a rotating rod 834 rotatably connected to an inner wall of each insertion hole 8311 symmetrically, a torsion spring 835 sleeved outside each rotating rod 834, and a sealing plate 836 fixedly welded to an outside of the rotating rod 834; each jack 8311 is internally provided with two corresponding rotating rods 834, one end of each torsion spring 835 is welded on the outer side wall of each rotating rod 834, the other end of each torsion spring 835 is welded on the inner wall of each jack 8311, when the torsion springs 835 are in an initial state, the side walls of the two sealing plates 836 close to each other are mutually attached, rubber pads can be embedded in the inner walls of the sealing plates 836 close to each other, when the first lead 92 and the second lead 93 are inserted into the jacks 8311, the rotating rods 834 are rotated to enable the two sealing plates 836 to move towards the directions away from each other, further, the first lead 92 or the second lead 93 is inserted into the jacks 8311 from the connection position between the two sealing plates 836, then the torsion springs 835 drive the centers of the sealing plates 836 to rotate to the states attached to each other, the jacks 8311 are closed, and the first lead 92 or the second lead 93 is prevented from being separated from the jacks 8311.
Referring to fig. 2 and 6, the fixing assembly 83 further includes a blocking rod 837 and a spring 838, the bottom wall of the foam core mold 8 is provided with a slot 84, the slot 84 is opened along the height direction of the foam core mold 8, the spring 838 is positioned in the slot 84, one end of the spring 838 is welded on the top wall of the inner wall of the slot 84, the other end of the spring 838 is welded on the end portion of the blocking rod 837, one end of the blocking rod 837 connected with the spring 838 is inserted into the slot 84, and the other end is positioned outside the slot 84; the side walls of the first limiting plate 832 and the second limiting plate 833 which are close to each other are provided with abdicating notches 8321, one end, away from the spring 838, of the blocking rod 837 is inserted between the two abdicating notches 8321, and the side walls of the blocking rod 837 are attached to the inner walls of the abdicating notches 8321; the yielding gap 8321 is communicated with the insertion hole 8311, and one ends of the first lead 92 and the second lead 93, which are far away from the power supply 9, are located in the yielding gap 8321 and attached to the side wall of the blocking rod 837.
The application also provides a preparation method of the disassembly-free foam core die prefabricated hollow slab beam, which comprises the following steps:
s1, binding a plurality of external concrete cushion blocks 21 and internal concrete cushion blocks 22 on the bottom plate steel bars 2 and the web steel bars 3, binding a plurality of internal concrete cushion blocks 22 on the side walls of the top plate steel bars 4, binding the bottom plate steel bars 2 on the upper surface of the prefabricated pedestal 1, and binding the web steel bars 3 on the two sides of the bottom plate steel bars 2 respectively;
s2, sequentially placing the foam core die 8 on the upper surface of the bottom plate reinforcing steel bars 2 along the length direction of the bottom plate reinforcing steel bars 2 so that the foam core die 8 is positioned between the web plate reinforcing steel bars 3; binding the top plate steel bars 4 on the upper surfaces of the web plate steel bars 3;
s3, fixedly mounting side molds 5 on two sides of a prefabricated pedestal 1, fixedly mounting end molds 6 on two ends of the prefabricated pedestal 1, injecting concrete from gaps between the side molds 5 and web steel bars 3, moving the concrete to the position below a foam core mold 8 along the height direction of the foam core mold 8, and filling a cavity 7 below the foam core mold 8;
s4, when the concrete moves to a position below the plugging rod 837, the concrete pushes the plugging rod 837 upwards to make the plugging rod 837 separate from the abdicating notch 8321 and insert into the slot 84, at this time, the concrete is inflated to the abdicating notch 8321, the first wire 92, the second wire 93, the power supply 9, the warning light 91 and the concrete form a conducting circuit, and the warning light 91 is lighted up to make the constructor know that the concrete is inflated to the cavity 7 below the foam core mold 8;
and S5, continuously pouring concrete until the upper surface of the concrete is level with the upper surface of the side mould 5, stopping pouring, and removing the side mould 5 and the end mould 6 when the strength of the concrete reaches a preset standard to finish the manufacture of the hollow slab beam.
The implementation principle of the disassembly-free foam core die prefabricated hollow slab beam in the embodiment of the application is as follows: firstly binding internal concrete cushion blocks 22 on the side walls of a bottom plate steel bar 2, a top plate steel bar 4 and a web steel bar 3, binding external concrete cushion blocks 21 on the side walls of the bottom plate steel bar 2 and the web steel bar 3, then binding the bottom plate steel bar 2 on the upper surface of a prefabricated pedestal 1, and then binding the web steel bar 3 on the two sides of the bottom plate steel bar 2; then, the power supply 9 and the warning lamp 91 are installed on the upper surface of the foam core mold 8, the first lead 92 and the second lead 93 are inserted into the storage groove, the plugging rod 837 is pushed upwards, the first lead 92 and the second lead 93 are inserted into the insertion holes 8311 in the fixing columns 831, and the pushing of the plugging rod 837 is released, so that the lower end of the plugging rod 837 is inserted into the abdicating notch 8321; place foam core mould 8 in bottom plate reinforcing bar 2 top after that to make each fixed column 831 all insert locate the inside in the constant head tank 221 on the concrete cushion block 22, then with roof reinforcing bar 4 ligature in two web reinforcing bar 3 upper surfaces, with the vertical laminating in prefabricated pedestal 1 both ends wall of end mould 6, with the vertical laminating in prefabricated pedestal 1 both sides wall of side mould 5, and connect in two side mould 5 upper ends through the steel pull rod, with the position of fixed side mould 5, and with end mould 6 and the fixed centre gripping of prefabricated pedestal 1 between two side moulds 5.
Then, concrete is injected from the gap between the side mold 5 and the web steel bar 3, the concrete descends to the lower part of the foam core mold 8, along with the increase of the injection amount of the concrete, the concrete gradually fills the cavity 7 at the lower part of the foam core mold 8 until the concrete moves to the two fixing columns 831 and upwards pushes the blocking rod 837 so that the blocking rod 837 is separated from the yielding notch 8321, the concrete moves into the yielding notch 8321 so that a circuit formed by the first lead 92, the second lead 93, the power supply 9 and the warning lamp 91 is conducted, the warning lamp 91 is lightened so that a constructor can judge that the concrete is filled in the cavity 7 at the lower part of the foam core mold 8, then the constructor continues to inject the concrete so that the concrete moves upwards from the gap between the side mold 5 and the web steel bar 3 until the height of the concrete is consistent with the height of the side mold 5, the pouring is stopped, and the concrete strength reaches a preset standard, and (5) removing the side die 5 and the end die 6 to finish the manufacture of the hollow slab beam.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A disassembly-free foam core die prefabricated hollow slab beam comprises a prefabricated pedestal (1), bottom plate reinforcing steel bars (2), web reinforcing steel bars (3), top plate reinforcing steel bars (4), side dies (5) and end dies (6); a cavity (7) is enclosed among the bottom plate steel bars (2), the web steel bars (3) and the top plate steel bars (4), and internal concrete cushion blocks (22) are arranged on the side walls, close to the cavity (7), of the bottom plate steel bars (2), the web steel bars (3) and the top plate steel bars (4); the side walls of the bottom plate steel bars (2) and the web steel bars (3) which are far away from the cavity (7) are provided with external concrete cushion blocks (21), and the prefabricated pedestal (1) and the side mold (5) are respectively abutted to the external concrete cushion blocks (21) in corresponding positions; the method is characterized in that: a foam core die (8) is arranged in the cavity (7), and all the internal concrete cushion blocks (22) are abutted against the foam core die (8); the foam core mould is characterized by further comprising a power supply (9), a first lead (92) electrically connected to the positive pole of the power supply (9), a second lead (93) electrically connected to the negative pole of the power supply (9), and a warning lamp (91) electrically connected to the position where the first lead (92) is electrically connected with the power supply (9), wherein one ends of the first lead (92) and the second lead (93), which are far away from the power supply (9), are fixedly connected to the bottom surface of the foam core mould (8).
2. The demolition-free foam core mold precast hollow slab beam as recited in claim 1, wherein: the device is characterized by further comprising a fixing assembly (83), wherein the fixing assembly (83) comprises fixing columns (831) symmetrically and fixedly connected to the bottom surface of the foam core mold (8), a first limiting plate (832) sleeved outside the first lead (92) and a second limiting plate (833) sleeved outside the outer side wall of the second lead (93); jacks (8311) are formed in the side walls of the fixing columns (831) close to the foam core mold (8); the first lead wire (92) is inserted into the insertion hole (8311) of one of the fixing columns (831), and the second lead wire (93) is inserted into the insertion hole (8311) of the other fixing column (831); the jack (8311) is arranged along the length direction of the fixing column (831), and the first limiting plate (832) or the second limiting plate (833) is attached to the end portion of the fixing column (831).
3. The demolition-free foam core mold precast hollow slab beam as recited in claim 2, wherein: and the upper surface of the internal concrete cushion block (22) positioned on the bottom plate steel bar (2) is provided with a positioning groove (221) for inserting the fixing column (831).
4. The demolition-free foam core mold precast hollow slab beam as recited in claim 2, wherein: first wire (92) and second wire (93) lateral wall all are provided with protecting cushion layer (921), are close to protecting cushion layer (921) of fixed column (831) department inserts and locates in jack (8311), first limiting plate (832) and second limiting plate (833) all are located the protecting cushion layer (921) periphery of corresponding position.
5. The demolition-free foam core mold precast hollow slab beam as recited in claim 4, wherein: the side wall of the foam core mold (8) is provided with a placement groove (81), and the first lead (92), the second lead (93) and the protective cushion layer (921) are inserted into the placement groove (81) at the corresponding positions; the protection bed course (921) lateral wall is run through to be inserted and is equipped with support bar (9211), support bar (9211) length direction perpendicular to protection bed course (921) length direction, support bar (9211) tip fixed connection is in arrangement groove (81) inner wall.
6. The disassembly-free foam core die precast hollow slab beam as recited in claim 2, wherein: the fixing component (83) further comprises rotating rods (834) symmetrically connected to the inner wall of each insertion hole (8311) in a rotating mode, a torsion spring (835) sleeved outside each rotating rod (834), and a sealing plate (836) fixedly connected to the outside of each rotating rod (834); one end of the torsion spring (835) is fixedly connected to the outer side wall of the rotating rod (834), the other end of the torsion spring is fixedly connected to the inner wall of the insertion hole (8311), and the side walls of the sealing plate (836) in the same insertion hole (8311) are mutually attached.
7. The demolition-free foam core mold precast hollow slab beam as recited in claim 6, wherein: the fixed assembly (83) further comprises a blocking rod (837) and a spring (838), the bottom wall of the foam core mold (8) is provided with a slot (84) for the blocking rod (837) and the spring (838) to be inserted, one end of the spring (838) is connected to the bottom wall of the slot (84), and the other end of the spring (838) is connected to the end part of the blocking rod (837); be close to each other first limiting plate (832) and second limiting plate (833) lateral wall offer the breach of stepping down (8321) that is linked together with jack (8311), jack (8311) are run through to first wire (92) tip or second wire (93) tip and lie in the breach of stepping down (8321), the one end that spring (838) department was kept away from in shutoff pole (837) is inserted and is located between the breach of stepping down (8321), the laminating of breach of stepping down (8321) inner wall is in shutoff pole (837) lateral wall.
8. The demolition-free foam core mold precast hollow slab beam as recited in claim 2, wherein: inclined planes (82) are symmetrically arranged at the bottom of the foam core mould (8), the length direction of the inclined planes (82) is parallel to the length direction of the foam core mould (8), the inclined planes (82) are positioned at two sides of the length direction of the central point of the foam core mould (8), and one side of the inclined planes (82) close to the central point of the foam core mould (8) is obliquely arranged upwards along the height direction of the foam core mould (8); one of the fixing columns (831) is arranged on one of the inclined surfaces (82), the other fixing column (831) is arranged on the other inclined surface (82), and the fixing column (831) is positioned on one side of the inclined surface (82) close to the center point of the foam core mold (8).
9. The demolition-free foam core mold precast hollow slab beam as recited in claim 8, wherein: each fixing column (831) that confession corresponds the position is all seted up in inclined plane (82) middle part and is inserted fixed slot (823) of establishing, each inclined plane (82) all include the symmetry set up in first inclined plane (821) of fixed slot (823) both sides and the symmetry set up in second inclined plane (822) of fixed slot (823) both sides, the one end that first inclined plane (821) are close to fixed column (831) department, the one end that second inclined plane (822) are close to fixed column (831) department all sets up along foam mandrel (8) direction of height tilt up.
10. A preparation method of a disassembly-free foam core die prefabricated hollow slab beam is characterized by comprising the following steps: the method comprises the following steps:
binding a plurality of external concrete cushion blocks (21) and internal concrete cushion blocks (22) on the bottom plate steel bars (2) and the web steel bars (3), binding a plurality of internal concrete cushion blocks (22) on the side walls of the top plate steel bars (4), binding the bottom plate steel bars (2) on the upper surface of the prefabricated pedestal (1), and binding the web steel bars (3) on the two sides of the bottom plate steel bars (2) respectively;
sequentially placing the foam core moulds (8) on the upper surfaces of the bottom plate reinforcing steel bars (2) along the length direction of the bottom plate reinforcing steel bars (2) so that the foam core moulds (8) are positioned between the web plate reinforcing steel bars (3); binding the top plate steel bars (4) on the upper surfaces of the web plate steel bars (3);
side molds (5) are fixedly installed on two sides of a prefabricating pedestal (1), end molds (6) are fixedly installed on two ends of the prefabricating pedestal (1), concrete is poured into a gap between each side mold (5) and a web plate reinforcing steel bar (3), and the concrete moves to the position below the foam core mold (8) along the height direction of the foam core mold (8) and fills a cavity (7) below the foam core mold (8);
when the concrete moves to the position below the blocking rod (837), the concrete upwards supports and pushes the blocking rod (837) to enable the blocking rod (837) to be separated from the yielding notch (8321) and to be inserted into the slot (84), the concrete is full of the yielding notch (8321), the first lead (92), the second lead (93), the power supply (9), the warning lamp (91) and the concrete form a conducting circuit, and the warning lamp (91) is lightened to enable constructors to know that the concrete is full of the cavity (7) below the foam core mold (8);
and continuously pouring concrete until the upper surface of the concrete is level with the upper surfaces of the side moulds (5), stopping pouring, and removing the side moulds (5) and the end moulds (6) when the strength of the concrete reaches a preset standard to finish the manufacture of the hollow slab beam.
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