CN113146809B - Core-pulling mold of hollow concrete wallboard, preparation method and application - Google Patents
Core-pulling mold of hollow concrete wallboard, preparation method and application Download PDFInfo
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- CN113146809B CN113146809B CN202110534027.9A CN202110534027A CN113146809B CN 113146809 B CN113146809 B CN 113146809B CN 202110534027 A CN202110534027 A CN 202110534027A CN 113146809 B CN113146809 B CN 113146809B
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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
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
- B28B7/186—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article for plates, panels or similar sheet- or disc-shaped objects, also flat oblong moulded articles with lateral openings, e.g. panels with openings for doors or windows, grated girders
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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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
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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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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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
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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
- B28B7/28—Cores; Mandrels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
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- Manufacturing & Machinery (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention relates to a core-pulling mould of a hollow concrete wallboard, a preparation method and application, belonging to the technical field of civil engineering, wherein the core-pulling is performed step by adopting a combined core-pulling mould, so that the core-pulling resistance is reduced, the problem that the hollow concrete wallboard is easy to damage in the core-pulling process is solved, and meanwhile, the combined core-pulling mould realizes that a key groove is formed on the inner wall of a hollow hole of the concrete wallboard; utilize loose core mould to form the keyway at the inner wall of concrete wall board hollow hole, improve the anti-shear slippage performance of new and old concrete, shear force wall body vertical distribution reinforcing bar is arranged inside the concrete of precast concrete hollow concrete wall board, connecting reinforcement arranges in post-cast concrete, the bond force through post-cast concrete, the bond force between new and old concrete and keyway resistance realize the lap joint of shear force wall body vertical distribution reinforcing bar, guarantee that cast-in-place concrete shear force wall is equated to the structural performance of core assembly concrete shear force wall.
Description
Technical Field
The invention belongs to the technical field of civil engineering, relates to production and application of concrete products, and particularly relates to a core-pulling die of a hollow concrete wallboard, a product and application of the core-pulling die.
Background
The core-pulling method of the hollow concrete wall panel mainly has two modes, one is an extrusion method, the method is mainly used for producing the partition wall panel and is not suitable for producing concrete structural members; the other method is a method of extracting the concrete member after the mold is preset, but the method has low efficiency, is difficult to extract and is easy to cause cracking damage to the concrete member. Therefore, a core-pulling mold and a core-pulling method which are easy to extract, good in product quality and good in product application effect are needed.
The invention patent application specification CN202010532998.5 discloses a prefabricated part and a method for producing a hollow concrete prefabricated unit by using the prefabricated part. Particularly, a plurality of continuous connected convex structures are constructed on the periphery of the core body; a filling space is formed between any adjacent protruding structures, and the filling layer is molded in all the filling spaces positioned on the periphery of the core pipe body; the connecting sleeve part can be sleeved on the core body, and the inner periphery of the connecting sleeve part can be simultaneously abutted with the top point of any one of the convex structures; the provided method mainly comprises the following steps: the technical scheme can improve the appearance quality and the size deviation of the formed hole of the hollow component; the hollow component can be smoothly pulled out in the production process, and the qualified rate of the molding quality can reach 92.1 percent by using the method. However, the extraction of the socket portion 30 according to the present invention is not easy as in the conventional core pulling method, and a key groove cannot be formed in the hollow inner surface.
The invention patent application specification CN202011439131.1 discloses a prefabricated part cavity mold, which comprises a mold main body, wherein the surface of the mold main body is provided with a concave-convex structure, so that concrete poured on the surface of the mold main body is combined with the concave-convex structure after being solidified. The prefabricated component cavity mould can be left in the concrete after making, both can increase the frictional force between the new and old concrete, play the reinforcing action to concrete structure, remove the flow of demolising the cavity mould and washing the mould simultaneously from, promoted the efficiency of construction. However, the use of the dismantling-free cavity mold increases the production cost, and the performance difference between the dismantling-free cavity mold material and the concrete material may have adverse effects on the performance of the structural member, which is not favorable for popularization and application.
The utility model discloses a prefabricated wall core mould, which comprises a top plate and side plates positioned on two sides below the top plate, and further comprises a bottom frame positioned below the top plate, wherein the side plates are connected with the bottom frame through rotating shafts; the bottom frame is connected with an intermediate shaft, the inner wall of the top plate is fixedly connected with a first component with an opening, and the intermediate shaft penetrates through the opening; the bottom of the first component extends out of the bottom plate towards two sides; a second part transversely penetrates through the intermediate shaft;
two ends of the second part extend out of two sides of the first part respectively, and along with clockwise and anticlockwise rotation of the middle shaft, two ends of the second part can strike bottom plates on two sides of the bottom of the first part respectively. The utility model also discloses a wall body that above-mentioned mould was made. However, the dismantling-free cavity mold is also used in the invention, so that the production cost is increased, and the performance difference between the dismantling-free cavity mold material and the concrete material may have adverse effects on the performance of the structural member, which is not beneficial to popularization and application.
Therefore, it is necessary to develop a core pulling mold for a hollow concrete wallboard, which has a simple structure, is convenient and easy to core, and the core pulling mold is applied to produce the hollow concrete wallboard, so that the structural performance of building a concrete shear wall by using the hollow concrete wallboard is excellent, the building is convenient and the cost is low.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the core-pulling mold for the hollow concrete wallboard, the preparation method and the application are provided, the core-pulling is performed step by adopting the combined core-pulling mold, the core-pulling resistance is reduced, the problem that the hollow concrete wallboard is easy to damage in the core-pulling process is solved, and the problem that a key groove cannot be formed in the hollow hole inner wall of the concrete wallboard by the traditional core-pulling method is solved; utilize loose core mould to form the keyway at the inner wall of concrete wallboard hollow hole, improve the anti-shear sliding property of new and old concrete, the concrete inside of precast concrete hollow concrete wallboard is arranged to the vertical distribution reinforcing bar of shear wall body, connecting reinforcement arranges in post-cast concrete, through the bond stress of post-cast concrete, the overlap joint of the bonding force and keyway resistance realization shear wall body vertical distribution reinforcing bar between new and old concrete, guarantee that cast-in-place concrete shear wall is equal to grouted assembly concrete shear wall's structural performance.
Loose core mould of hollow concrete wallboard, including outer mould and interior mould, characterized by: the cross section of the outer die is trapezoidal, a longitudinal convex tooth, a transverse key tooth, a countersunk head bolt hole and a traction hole are arranged on the outer die, and the longitudinal convex tooth is arranged along the through length of the vertex angle end part of the short side of the trapezoidal section of the outer die; the transverse key teeth are arranged along the transverse direction of the outer die, and the end parts of the transverse key teeth are intersected with the longitudinal convex teeth; the countersunk bolt holes are formed in the outer sides of the transverse key teeth; the traction hole is arranged at the outer end part of the outer die;
the inner die is a double-rib core-pulling inner die and a single-rib core-pulling inner die, countersunk bolt holes, traction holes and wedge-shaped holes are formed in the inner die, and the wedge-shaped holes are formed in the inner die and on the side opposite to the traction holes.
The longitudinal convex teeth are arranged into the double-rib type core-pulling outer die along the through lengths of the end parts of the two sides of the vertex angle of the short side of the trapezoidal section of the outer die.
The longitudinal convex teeth are arranged into a single-rib type core-pulling outer die along the through length of the end part on one side of the vertex angle of the short side of the trapezoidal section of the outer die.
The preparation method of the hollow concrete wallboard is characterized by comprising the following steps: the core-pulling mould for the hollow concrete wallboard comprises the following steps which are sequentially carried out,
step one, core-pulling die for preparing hollow concrete wallboard
Preparing a core-pulling mould of the hollow concrete wallboard, wherein the outer mould comprises a double-rib core-pulling outer mould and a single-rib core-pulling outer mould, and the inner mould comprises a double-rib core-pulling inner mould and a single-rib core-pulling inner mould;
step two, core-pulling mould group mould of hollow concrete wall board
Two double-rib type core-pulling outer molds and a double-rib type core-pulling inner mold are adopted for mold assembly, or two single-rib type core-pulling outer molds and a single-rib type core-pulling inner mold are adopted for mold assembly; the two outer dies and the inner die are arranged in the same direction, the two outer dies are arranged on two sides of the inner die and are symmetrically arranged, long edges of the trapezoidal sections of the two outer dies are attached to long edges of the sections of the inner die, countersunk bolt holes of the two outer dies and the inner die are aligned, and the two outer dies and the inner die are fastened into a whole through countersunk bolts;
step three, formwork supporting and reinforcing steel bar binding
Supporting peripheral side forms of the hollow concrete wallboard on a bottom die, wherein two opposite sides of each side form are provided with openings corresponding to the cross section shape of the loose core mould set of the hollow concrete wallboard, vertically distributed reinforcing steel bars on two sides of a wall body are arranged to be tightly attached to the outer side positions of longitudinal convex teeth during reinforcing steel bar binding, after the reinforcing steel bars of the hollow concrete wallboard are bound, inserting the loose core mould set of the hollow concrete wallboard into the openings from the outer side of the side forms and extending out of the other end of the side forms, inserting a trapezoidal wedge into a wedge hole, knocking the wedge to tightly push the loose core mould set of the hollow concrete wallboard and the side forms of the hollow concrete wallboard, and fixing the loose core mould set of the hollow concrete wallboard and the side forms of the hollow concrete wallboard;
step four, curing the poured concrete and removing the formwork
Pouring concrete and curing in the mould of the binding bar of the three-formwork completion step, after the concrete reaches the design strength, withdrawing the trapezoidal wedge and removing the countersunk bolt in the countersunk bolt hole, the inner mould is firstly drawn out through the traction hole at the end part of the inner mould, the outer mould is drawn out through the traction hole of the outer mould, a hollow hole of the hollow concrete wallboard is formed, a longitudinal groove is formed at the corresponding part of the longitudinal convex tooth, the peripheral side moulds of the hollow concrete wallboard are removed, the hollow concrete wallboard is manufactured to be discharged from the mould and stacked for later use, and the preparation of the hollow concrete wallboard is completed.
The application of the hollow concrete wallboard is characterized in that: the method for constructing the core-grouted fabricated concrete shear wall body by applying the prepared hollow concrete wallboard comprises the following steps which are sequentially carried out,
step one, connecting reinforcing steel bar rings at the bottom of an initial assembly installation layer are arranged
Setting a connecting reinforcing bar ring at the bottom of an initial assembly installation layer by a traditional method, anchoring the connecting reinforcing bar ring in bottom concrete and extending out of corresponding lap joint length, wherein the outer contour of the connecting reinforcing bar ring corresponds to a longitudinal groove on the side surface of a hollow hole of a hollow concrete wall slab;
step two, installing the hollow concrete wallboard
Hoisting the hollow concrete wallboard to place in a station, inserting a preset connecting reinforcing steel bar ring into a longitudinal groove on the side surface of a hollow hole of the hollow concrete wallboard, aligning the hollow concrete wallboard and then fixing the hollow concrete wallboard;
step three, arranging interlayer or top layer connecting reinforcing steel bar ring
After binding the reinforcing steel bars of the floor concrete slab, inserting connecting reinforcing steel bar rings into longitudinal grooves on the side surfaces of the hollow holes of the hollow concrete wall slabs, wherein the length of the connecting reinforcing steel bar rings inserted into the hollow holes of the hollow concrete wall slabs is the lap joint length, the lap joint length inserted into the hollow holes of the hollow concrete wall slabs on the upper layer is reserved for the exposed part of the middle layer, and the anchoring length inserted into the concrete floor slab is reserved for the exposed part of the top layer;
step four, pouring core pouring concrete
And pouring concrete into the hollow holes of the hollow concrete wallboard, and building the wall body of the core-grouted fabricated concrete shear wall after the concrete is cured to reach the strength.
Through the design scheme, the invention can bring the following beneficial effects: the core-pulling mould for the hollow concrete wallboard, the preparation method and the application thereof adopt the combined core-pulling mould to perform core-pulling step by step, reduce the core-pulling resistance, solve the problem that the hollow concrete wallboard is easy to damage in the core-pulling process, and simultaneously realize that a key groove is formed on the inner wall of a hollow hole of the concrete wallboard by the combined core-pulling mould; utilize loose core mould to form the keyway at the inner wall of concrete wall board hollow hole, improve the anti-shear slippage performance of new and old concrete, shear force wall body vertical distribution reinforcing bar is arranged inside the concrete of precast concrete hollow concrete wall board, connecting reinforcement arranges in post-cast concrete, the bond force through post-cast concrete, the bond force between new and old concrete and keyway resistance realize the lap joint of shear force wall body vertical distribution reinforcing bar, guarantee that cast-in-place concrete shear force wall is equated to the structural performance of core assembly concrete shear force wall.
Drawings
The invention is further described with reference to the following figures and detailed description:
fig. 1 is a schematic top view of the double-rib core-pulling outer mold of the present invention.
FIG. 2 is a schematic longitudinal section view of a single-rib and double-rib type core-pulling outer mold and a double-rib type core-pulling outer mold according to the present invention.
FIG. 3 isbase:Sub>A schematic side view of the double-rib type core pulling outer mold A-A of the present invention.
FIG. 4 is a schematic cross-sectional view of a B-B double rib type core pulling outer mold of the present invention.
FIG. 5 is a schematic cross-sectional view of the double-rib type core-pulling outer mold of the invention.
Fig. 6 is a schematic top view of the single rib type core pulling outer mold of the present invention.
FIG. 7 is a schematic side view of the single rib type core pulling outer mold of the present invention.
FIG. 8 is a schematic cross-sectional view of the single-rib type core-pulling outer mold of the present invention.
FIG. 9 is a schematic cross-sectional view of a single-rib type core-pulling outer mold F-F according to the present invention.
Fig. 10 is a schematic top view of the double rib type core pulling inner mold of the present invention.
FIG. 11 is a schematic longitudinal cross-sectional view of a single-rib and double-rib type core pulling outer mold and a double-rib type core pulling inner mold according to the present invention.
FIG. 12 is a schematic side view of a double rib type inner core pulling mold G-G of the present invention.
FIG. 13 is a schematic cross-sectional view of the double-rib type inner core-pulling mold of the present invention.
FIG. 14 is a schematic top view of the single rib type inner core pulling mold of the present invention.
FIG. 15 is a side view of the single rib type inner core pulling mold J-J according to the present invention.
FIG. 16 is a schematic cross-sectional view of the single rib type core pulling inner mold K-K of the present invention.
Fig. 17 is a schematic longitudinal section view of a core back mold set for a hollow concrete panel according to the present invention.
FIG. 18 is an axial schematic view of a trapezoidal wedge of the present invention.
FIG. 19 is a schematic cross-sectional view of a part of a mold set of the present invention for manufacturing a wall binding bar and a double-bar type core-pulling mold for a hollow concrete panel.
Fig. 20 is a schematic partial cross-sectional view of a single-rib core-pulling mold set for preparing a hollow concrete wallboard wall binding rib and a single-rib core-pulling mold set according to the present invention.
Fig. 21 is a schematic partial cross-sectional view of concrete poured during the molding process of the double-rib type loose core mold for manufacturing a hollow concrete wall panel according to the present invention.
Fig. 22 is a schematic partial cross-sectional view of concrete placement when the single-rib type loose core mold assembly for hollow concrete wall panels is manufactured according to the present invention.
FIG. 23 is a schematic partial cross-sectional view of a double-ribbed loose core inner mold for manufacturing a hollow concrete wallboard according to the present invention.
FIG. 24 is a schematic partial cross-sectional view of a single rib type core pulling inner mold being drawn out for preparing a hollow concrete wallboard according to the present invention.
FIG. 25 is a schematic partial cross-sectional view of the invention for preparing a hollow concrete panel by drawing out the double-ribbed core and the outer mold.
FIG. 26 is a schematic partial cross-sectional view of the invention in the preparation of a hollow concrete wall panel with the single-rib type core and the outer mold being drawn out.
Fig. 27 is a partial cross-sectional view of the assembled shear wall body constructed by the hollow concrete wall panel assembled by the double-rib type loose core mold of the invention after the reinforcing rings are inserted.
Fig. 28 is a partial cross-sectional view of the assembled shear wall body constructed by hollow concrete wall panels and assembled by the single rib type loose core mold of the present invention after inserting the connection reinforcing rings.
Fig. 29 is a schematic partial cross-sectional view of a hollow concrete wall panel manufactured by the double-rib type core-pulling mold assembly according to the present invention after concrete is poured into a hollow hole of an assembled shear wall.
Fig. 30 is a schematic partial cross-sectional view of a hollow concrete wallboard manufactured by the single-rib type loose core mold die set after concrete is poured into a hollow hole of an assembled shear wall.
In the drawing, 1-a double-rib type core-pulling outer mold, 2-a longitudinal convex tooth, 3-a transverse key tooth, 4-a countersunk bolt hole, 5-a traction hole, 6-a single-rib type core-pulling outer mold, 7-a double-rib type core-pulling inner mold, 8-a wedge hole, 9-a single-rib type core-pulling inner mold, 10-a bottom mold, 11-a side mold, 12-a countersunk bolt, 13-a trapezoidal wedge, 14-concrete, 15-a hollow concrete wallboard, 16-a hollow hole, 17-a longitudinal groove and 18-a connecting reinforcing ring.
Detailed Description
A core pulling mold for a hollow concrete wall panel, as shown in fig. 1 to 16, comprising an outer mold and an inner mold, wherein the outer mold comprises a double rib type core pulling outer mold 1 as shown in fig. 1 to 5 and a single rib type core pulling outer mold 6 as shown in fig. 2 and 6 to 9, and the inner mold comprises a double rib type core pulling inner mold 7 as shown in fig. 10 to 13 and a single rib type core pulling inner mold 9 as shown in fig. 11 and 14 to 16;
the cross sections of the double-rib type core-pulling outer mold 1 shown in fig. 1 to 5 and the single-rib type core-pulling outer mold 6 shown in fig. 2 and 6 to 9 are trapezoidal, and include longitudinal convex teeth 2, transverse key teeth 3, countersunk bolt holes 4 and traction holes 5, the longitudinal convex teeth 2 are arranged along the entire length of the corner of the short side of the trapezoidal section of the double-rib type core-pulling outer mold 1 and the single-rib type core-pulling outer mold 6, the double-rib type core-pulling outer mold 1 is provided with two longitudinal convex teeth 2, and the single-rib type core-pulling outer mold 6 is provided with one longitudinal convex tooth 2; the transverse key teeth 3 are transversely arranged along the short sides of the trapezoidal sections of the double-rib type core-pulling outer mold 1 and the single-rib type core-pulling outer mold 6, and the intersection parts of the transverse key teeth and the longitudinal convex teeth 2 are used as boundaries; the countersunk bolt holes 4 are formed in the outer sides of the transverse key teeth 3; the traction holes 5 are arranged at the outer end parts of the double-rib core-pulling outer mold 1 and the single-rib core-pulling outer mold 6;
the double rib type inner core back mold 7 shown in fig. 10 to 13 and the single rib type inner core back mold 9 shown in fig. 11 and 14 to 16 include a countersunk bolt hole 4, a drawing hole 5, and a wedge hole 8, and the wedge hole 8 is provided at an end of the double rib type inner core back mold 7 and the single rib type inner core back mold 9 opposite to the drawing hole 5.
The preparation method of the hollow concrete wallboard, as shown in figures 17-26, adopts the core-pulling mould of the hollow concrete wallboard, comprises the following steps which are carried out in sequence,
step one, core-pulling die for preparing hollow concrete wallboard
As shown in fig. 1 to 16, the double rib type core back outer mold 1 shown in fig. 1 to 5, the single rib type core back outer mold 6 shown in fig. 2 and 6 to 9, the double rib type core back inner mold 7 shown in fig. 10 to 13, and the single rib type core back inner mold 9 shown in fig. 11 and 14 to 16 are included; the cross sections of the double-rib type core pulling outer mold 1 shown in fig. 1 to 5 and the single-rib type core pulling outer mold 6 shown in fig. 2 and 6 to 9 are trapezoidal and comprise longitudinal convex teeth 2, transverse key teeth 3, countersunk bolt holes 4 and traction holes 5, the longitudinal convex teeth 2 are arranged along the through length of the corners of the short sides of the trapezoidal sections of the double-rib type core pulling outer mold 1 and the single-rib type core pulling outer mold 6, the double-rib type core pulling outer mold 1 is provided with the two longitudinal convex teeth 2, and the single-rib type core pulling outer mold 6 is provided with one longitudinal convex tooth 2; the transverse key teeth 3 are transversely arranged along the short sides of the trapezoidal sections of the double-rib type core-pulling outer mold 1 and the single-rib type core-pulling outer mold 6, and the intersection parts of the transverse key teeth and the longitudinal convex teeth 2 are used as boundaries; the countersunk bolt holes 4 are formed in the outer sides of the transverse key teeth 3; the traction holes 5 are arranged at the outer end parts of the double-rib type core-pulling outer mold 1 and the single-rib type core-pulling outer mold 6;
the double rib type inner core back mold 7 shown in fig. 10 to 13 and the single rib type inner core back mold 9 shown in fig. 11 and 14 to 16 include a countersunk bolt hole 4, a drawing hole 5, and a wedge hole 8, and the wedge hole 8 is provided at an end of the double rib type inner core back mold 7 and the single rib type inner core back mold 9 opposite to the drawing hole 5;
step two, core-pulling mould group mould of hollow concrete wall board
As shown in fig. 17 and 18, a double-rib type core pulling outer mold 1 and a double-rib type core pulling inner mold 7 are assembled, two double-rib type core pulling outer molds 1 and one double-rib type core pulling inner mold 7 are assembled, the two double-rib type core pulling outer molds 1 and the traction hole 5 of the double-rib type core pulling inner mold 7 are arranged in the same direction, one double-rib type core pulling inner mold 7 is arranged in the middle of the two double-rib type core pulling outer molds 1 and symmetrically arranged, the long side of the trapezoidal section of the double-rib type core pulling outer mold is tightly attached to the long side of the section of the inner mold, the two double-rib type core pulling outer molds 1 and the countersunk head bolt hole 4 of the double-rib type core pulling inner mold 7 are aligned, and the two double-rib type core pulling outer molds 1 and the double-rib type core pulling inner mold 7 are fastened into a whole through countersunk head bolts 12;
as shown in fig. 17 and 18, the single rib type core back outer mold 6 and the single rib type core back inner mold 9 are assembled in the same manner as the double rib type core back outer mold 1 and the double rib type core back inner mold 7;
step three, formwork supporting and reinforcement binding
As shown in fig. 17 to 20, the peripheral side forms 11 of the hollow concrete wallboard are supported on the bottom die 10, openings corresponding to the cross-sectional shapes of the loose core mold sets of the hollow concrete wallboard are formed in two opposite sides of each side form 11, the vertically distributed reinforcing steel bars on two sides of the wall body are arranged in a manner of being tightly attached to the outer sides of the longitudinal convex teeth 2 when the reinforcing steel bars are bound, after the reinforcing steel bars of the hollow concrete wallboard are bound, the loose core mold sets of the hollow concrete wallboard are inserted into the openings of the side forms 11 from the outer sides of the side forms and extend out of the openings of the side forms 11 on the other sides, the trapezoidal wedges 13 are inserted into the wedge holes 8, and the loose core mold sets of the hollow concrete wallboard and the side forms 11 of the hollow concrete wallboard are tightly pushed by knocking the wedges 13, so that the loose core mold sets of the hollow concrete wallboard and the side forms 11 of the hollow concrete wallboard are fixed;
step four, curing the poured concrete and removing the formwork
As shown in fig. 21 and 22, concrete 14 is poured into the mold with the reinforcement being supported and cured, after the concrete reaches the designed strength, the trapezoidal wedge 13 is removed and the countersunk bolt 12 in the countersunk bolt hole 4 is removed, then as shown in fig. 23 and 24, the single rib type core pulling inner mold 9 or the double rib type core pulling inner mold 7 is firstly drawn out through the traction hole 5 at the end of the single rib type core pulling inner mold 9 or the double rib type core pulling inner mold 7, then as shown in fig. 25 and 26, the single rib type core pulling outer mold 6 or the double rib type core pulling outer mold 1 is drawn out through the traction hole 5 at the end of the single rib type core pulling outer mold 6 or the double rib type core pulling outer mold 1 to form a hollow hole 16 of the hollow concrete wallboard, a longitudinal groove 17 is formed at the corresponding position of the longitudinal convex tooth 2, the peripheral side mold 11 of the hollow concrete wallboard is removed, the hollow concrete wallboard 15 is made to be stacked for use, and the preparation of the hollow concrete wallboard 15 is completed.
Application of the hollow concrete wall panel, as shown in fig. 27-30, the hollow concrete wall panel 15 prepared by the preparation method of the hollow concrete wall panel is used for building a core-grouted fabricated concrete shear wall body, which comprises the following steps in sequence,
step one, setting the bottom connecting reinforcing steel bar ring 18 of the initial assembly installation layer
As shown in fig. 27 and 28, the connecting reinforcing rings 18 at the bottom of the initial assembly layer are arranged by conventional method, the connecting reinforcing rings 18 are anchored in the bottom concrete and extend out by a corresponding overlap length, and the outer contour of the connecting reinforcing rings 18 corresponds to the longitudinal grooves 17 at the side of the hollow hole 16 of the hollow concrete wall panel 15;
step two, installing the hollow concrete wall panel 15
As shown in fig. 27 and 28, lifting the hollow concrete wall panel 15 into the working position, inserting the preset connecting reinforcing bar ring 18 into the longitudinal groove 17 on the side of the hollow hole 16 of the hollow concrete wall panel 15, aligning the hollow concrete wall panel 15 and fixing;
step three, arranging interlayer or top layer connecting reinforcing steel bar rings 18
As shown in fig. 27 and 28, after the floor slab reinforcing bars are bound, connecting reinforcing rings 18 are inserted into the longitudinal grooves 17 on the side surfaces of the hollow holes 16 of the hollow concrete wall panels 15, the length of the connecting reinforcing rings 18 inserted into the hollow holes 16 of the hollow concrete wall panels 15 is the lap joint length, the exposed length of the middle layer is the length of the lap joint inserted into the hollow holes 16 of the hollow concrete wall panels 15 of the previous layer, and the exposed length of the top layer is the anchoring length inserted into the concrete floor slab;
step four, pouring core-filling concrete 14
As shown in fig. 29 and 30, concrete 14 is poured into the hollow hole 16 of the hollow concrete wall panel 15, and after the concrete is cured to reach the strength, the core-grouted fabricated concrete shear wall body is built.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Loose core mould of hollow concrete wallboard, including outer mould and interior mould, characterized by: the cross section of the outer die is trapezoidal, a longitudinal convex tooth (2), a transverse key tooth (3), a countersunk head bolt hole (4) and a traction hole (5) are arranged on the outer die, and the longitudinal convex tooth (2) is arranged along the full length of the vertex angle end part of the short side of the trapezoidal section of the outer die; the transverse key teeth (3) are arranged along the transverse direction of the outer die, and the end parts of the transverse key teeth are intersected with the longitudinal convex teeth (2); the countersunk bolt holes (4) are formed in the outer sides of the transverse key teeth (3); the traction hole (5) is arranged at the outer end part of the outer die;
the inner die is a double-rib core-pulling inner die (7) and a single-rib core-pulling inner die (9), countersunk bolt holes (4), traction holes (5) and wedge holes (8) are formed in the inner die, and the wedge holes (8) are formed in one side, opposite to the traction holes (5), of the inner die.
2. The loose core mould of the hollow concrete wall panel according to claim 1, wherein: the longitudinal convex teeth (2) are arranged into the double-rib core-pulling outer die (1) along the through lengths of the end parts of the two sides of the vertex angle of the short side of the trapezoidal section of the outer die.
3. The loose core mould of the hollow concrete wall panel according to claim 1, wherein: the longitudinal convex teeth (2) are arranged into a single-rib type core-pulling outer die (6) along the whole length of the end part on one side of the vertex angle of the short side of the trapezoidal section of the outer die.
4. The preparation method of the hollow concrete wallboard is characterized by comprising the following steps: the hollow concrete wall panel is prepared based on the core pulling mold of the hollow concrete wall panel according to claim 1, and comprises the following steps which are carried out in sequence,
step one, core-pulling die for preparing hollow concrete wallboard
The core-pulling die for the hollow concrete wallboard is prepared, wherein the outer die comprises a double-rib core-pulling outer die (1) and a single-rib core-pulling outer die (6), and the inner die comprises a double-rib core-pulling inner die (7) and a single-rib core-pulling inner die (9);
step two, core-pulling mould group mould of hollow concrete wallboard
Two double-rib type core-pulling outer molds (1) and a double-rib type core-pulling inner mold (7) are adopted for mold assembly, or two single-rib type core-pulling outer molds (6) and a single-rib type core-pulling inner mold (9) are adopted for mold assembly; the two outer dies and the traction hole (5) of one inner die are arranged in the same direction, the two outer dies are arranged on two sides of the inner die and are symmetrically arranged, the long edge of the trapezoidal section of each outer die is attached to the long edge of the section of the inner die, the countersunk head bolt holes (4) of the two outer dies and the inner die are aligned, and the two outer dies and the inner die are fastened into a whole through countersunk head bolts (12);
step three, formwork supporting and reinforcing steel bar binding
Supporting peripheral side forms (11) of the hollow concrete wallboard on a bottom die (10), wherein openings corresponding to the cross section shape of a loose core die set of the hollow concrete wallboard are formed in two opposite sides of each side form (11), vertically distributed reinforcing steel bars on two sides of a wall body are tightly attached to the outer side of a longitudinal convex tooth (2) during reinforcing steel bar binding, after reinforcing steel bars of the hollow concrete wallboard are bound, inserting the loose core die set of the hollow concrete wallboard into the openings of the side forms (11) from the outer side of the side forms and extending out of the openings of the side forms (11) on the other side, inserting a trapezoidal wedge (13) into a wedge hole (8), knocking the wedge (13) to tightly support the loose core die set of the hollow concrete wallboard and the side forms (11) of the hollow concrete wallboard, and fixing the loose core die set of the hollow concrete wallboard and the side forms (11) of the hollow concrete wallboard;
step four, curing the poured concrete and removing the formwork
Pouring concrete (14) and curing in the mould of the binding bar of the three-formwork finishing step, after the concrete reaches the design strength, withdrawing the trapezoidal wedge (13) and removing the countersunk bolt (12) in the countersunk bolt hole (4), firstly taking out the inner mould through the traction hole (5) at the end part of the inner mould, then taking out the outer mould through the traction hole (5) of the outer mould, forming the hollow hole (16) of the hollow concrete wallboard, forming the longitudinal groove (17) at the corresponding part of the longitudinal convex tooth (2), removing the peripheral side moulds (11) of the hollow concrete wallboard, manufacturing the hollow concrete wallboard (15), demoulding and stacking for later use, and finishing the preparation of the hollow concrete wallboard (15).
5. The application method of the hollow concrete wallboard is characterized in that: constructing a grouted fabricated concrete shear wall body based on the hollow concrete wall panel prepared according to claim 4, comprising, and in sequence,
step one, setting a connecting reinforcing ring (18) at the bottom of an initial assembly installation layer
Setting a connecting reinforcing ring (18) at the bottom of the initial assembly installation layer by a conventional method, anchoring the connecting reinforcing ring (18) in the bottom concrete and extending out by a corresponding lap length, wherein the outer contour of the connecting reinforcing ring (18) corresponds to a longitudinal groove (17) on the side surface of a hollow hole (16) of the hollow concrete wallboard (15);
step two, installing the hollow concrete wallboard (15)
Hoisting the hollow concrete wallboard (15) and placing the hollow concrete wallboard into a station, inserting a preset connecting reinforcing bar ring (18) into a longitudinal groove (17) on the side surface of a hollow hole (16) of the hollow concrete wallboard (15), and fixing the hollow concrete wallboard (15) after aligning;
step three, arranging interlayer or top connection reinforcing steel bar rings (18)
After binding the reinforcing steel bars of the floor concrete slab, inserting a connecting reinforcing steel bar ring (18) into a longitudinal groove (17) on the side surface of a hollow hole (16) of a hollow concrete wallboard (15), wherein the length of the connecting reinforcing steel bar ring (18) inserted into the hollow hole (16) of the hollow concrete wallboard (15) is the lap joint length, the exposed part of the middle layer is reserved for the lap joint length inserted into the hollow hole (16) of the hollow concrete wallboard (15) at the upper layer, and the exposed part of the top layer is reserved for the anchoring length inserted into the concrete floor slab;
step four, pouring core concrete (14)
And pouring concrete (14) into the hollow hole (16) of the hollow concrete wallboard (15), and after the concrete is cured to reach the strength, finishing the construction of the core-pouring assembled concrete shear wall body.
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