CN109049294B - Concrete prefabricated wallboard and production process thereof - Google Patents
Concrete prefabricated wallboard and production process thereof Download PDFInfo
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- CN109049294B CN109049294B CN201810878154.9A CN201810878154A CN109049294B CN 109049294 B CN109049294 B CN 109049294B CN 201810878154 A CN201810878154 A CN 201810878154A CN 109049294 B CN109049294 B CN 109049294B
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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
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
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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
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
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Abstract
The invention relates to the technical field of prefabricated parts, and particularly discloses a concrete prefabricated wallboard, which comprises an inner wallboard, an outer wallboard and a heat insulation board fixed between the inner wallboard and the outer wallboard; connecting pieces are fixed on two side surfaces of the heat-insulation plate, and the connecting pieces on the two sides of the heat-insulation plate are respectively poured and fixed in the inner wall plate and the outer wall plate; the connecting piece comprises a base plate, a connecting rib and a reinforcing rib; an embedded assembly is further fixed in the concrete prefabricated wall board and comprises an embedded sleeve and an internal embedded part; meanwhile, the invention also discloses a production process of the concrete prefabricated wall panel, which comprises the steps of cleaning a mould, assembling the mould, smearing a release agent, installing a pre-embedded assembly, pouring an inner wall panel, paving a heat insulation board, pouring an outer wall panel and the like. The invention provides a concrete prefabricated wallboard and a production process thereof, which can greatly improve the heat insulation performance and the structural strength of the prefabricated wallboard and can ensure the convenience of later hoisting and decoration.
Description
Technical Field
The invention relates to the technical field of prefabricated parts, in particular to a concrete prefabricated wallboard and a production process thereof.
Background
The fabricated building is an important embodiment of the fusion of the low-carbon concept in the rapid development of China, and provides a flexible construction concept for urbanization construction. The prefabricated wall board is adopted to build the fabricated building, so that the factory and mechanical construction degree can be improved, the field wet operation is reduced, the field labor is saved, the seasonal influence is overcome, and the building construction period is shortened.
The invention patent application with the existing Chinese patent application publication number of CN107620422A discloses a concrete prefabricated wall panel, wherein reinforcing steel bars which are arranged transversely and vertically are fixed in the concrete prefabricated wall panel, round pipes which are left in the concrete prefabricated wall panel during pouring are distributed on the surface of the concrete prefabricated wall panel, the front and the back of each round pipe penetrate through the concrete prefabricated wall panel, a reserved hole is formed in the middle through hole of each round pipe, and the round pipes and the reinforcing steel bars are staggered. This technical scheme is through setting up the preformed hole in prefabricated wallboard, drills on prefabricated wallboard again when avoiding later stage fitment, reduces the risk of wallboard fracture.
However, the prefabricated wall panel is completely cast by concrete, and the heat insulation performance of the prefabricated wall panel is relatively poor, so that the requirement of the cold region on the heat insulation performance of the wall body is difficult to meet. Meanwhile, in the production process of similar prefabricated wallboards, the concrete is generally vibrated after being completely poured into a pouring mold; however, when the concrete is thick, the vibration effect of the concrete is often difficult to ensure, so that the compactness of the concrete is insufficient, and the structural strength of the prefabricated wall panel is affected.
Disclosure of Invention
Aiming at the problem that the traditional prefabricated wall board is insufficient in heat insulation performance, the first technical purpose of the invention is to provide the concrete prefabricated wall board, and the heat insulation performance of the prefabricated wall board is greatly improved by virtue of the heat insulation board which is poured and fixed between the inner wall board and the outer wall board.
In order to achieve the first technical object, the invention provides the following technical scheme:
a concrete prefabricated wall panel sequentially comprises an inner wall panel and an outer wall panel from inside to outside, wherein a heat insulation board is fixedly poured between the inner wall panel and the outer wall panel; and connecting pieces are fixed on two side surfaces of the heat-insulation plate, and the connecting pieces on two sides of the heat-insulation plate are respectively poured and fixed in the inner wall plate and the outer wall plate.
By adopting the technical scheme, the heat insulation board can greatly improve the heat insulation performance of the prefabricated wallboard by pouring and fixing the heat insulation board between the inner wallboard and the outer wallboard; simultaneously, through set up the connecting piece on the heated board to ensure that the connecting piece of heated board both sides is pour respectively and is fixed in interior wallboard and side fascia, the connecting piece can improve the joint strength between heated board and interior wallboard and the side fascia, avoids appearing obvious layering between interior wallboard, side fascia and the heated board, helps improving the shaping quality of this prefabricated wallboard.
The invention is further configured to: the connecting piece comprises two base plates which are arranged in parallel at intervals, and the two base plates are attached and fixed on one side of the heat-insulation plate; the backing plate deviates from heated board one side parallel and is equipped with the splice bar, two all welded fastening has the strengthening rib between backing plate and the splice bar, the strengthening rib is continuous bending structure.
Through adopting above-mentioned technical scheme, backing plate and heated board fixed connection on the connecting piece, and strengthening rib and splice bar on the connecting piece are fixed in the interior wallboard or the side fascia of adjacent one side through pouring, greatly improve the joint strength of heated board and adjacent interior wallboard or side fascia.
The invention is further configured to: the connecting pieces are at least provided with two groups at intervals in parallel along the width direction of the heat-insulation board; the connecting piece is the symmetry setting in heated board both sides, and arbitrary all wear to be equipped with in the backing plate and be used for the bolt and nut group of the corresponding backing plate of fixed connection heated board opposite side, bolt and nut group is equipped with two sets ofly along the length direction of backing plate evenly at least at the interval.
Through adopting above-mentioned technical scheme, the heated board both sides are and are two sets of connecting pieces that correspond the setting and pass through bolt and nut group fixed connection, and the connecting piece of both sides still pours respectively simultaneously and fixes in interior wallboard and side fascia to greatly improve the wholeness between interior wallboard, heated board and the side fascia, help improving the structural strength of prefabricated wallboard, guarantee the shaping quality of prefabricated wallboard.
The invention is further configured to: the inner wall board is a reinforced concrete wall board, the thickness of the inner wall board is 100-200 mm, and a steel reinforcement framework is fixedly poured in the inner wall board.
By adopting the technical scheme, the inner wall plate is relatively thick, and the steel reinforcement framework is poured and fixed in the inner wall plate, so that the structural strength of the inner wall plate is ensured; in practical application, the inner wall plate is used as a bearing wall plate, mainly bears upper load and transmits the load to a main body stress structure such as a lower wall plate or a foundation.
The invention is further configured to: the heat preservation board is an extruded polystyrene board, and the thickness of the heat preservation board is 30-80 mm.
By adopting the technical scheme, the extruded polystyrene board not only has excellent and lasting heat insulation performance, but also has excellent water resistance and moisture resistance, and simultaneously has outstanding corrosion resistance and durability; therefore, the heat insulation plate made of the extruded polystyrene board is poured and fixed in the prefabricated wallboard, so that the prefabricated wallboard can be effectively ensured to have sufficient and lasting heat insulation performance; meanwhile, according to the requirements of regions and energy conservation, the thickness of the heat preservation plate can be properly adjusted within the range of 30-80 mm by a user.
The invention is further configured to: the outer wallboard is a reinforced concrete wallboard, and the thickness of the outer wallboard is 50-60 mm.
Through adopting above-mentioned technical scheme, the side fascia can protect the heated board, can regard as the decoration basic unit of wall body again.
The invention is further configured to: the concrete prefabricated wall board is characterized in that a pre-buried assembly is also fixedly poured in the concrete prefabricated wall board and comprises a pre-buried sleeve and an inner pre-buried part, the pre-buried sleeve is fixedly poured in the concrete prefabricated wall board, and the inner pre-buried part is fixedly poured in the pre-buried sleeve; the inner embedded part is a hoisting accessory or a cable sleeve.
Through adopting above-mentioned technical scheme, when actual construction, can pour earlier the buried sleeve and fix in prefabricated wallboard, pour hoist and mount accessory and cable sleeve in the buried sleeve afterwards, can effectively reduce the influence of external factor to hoist and mount accessory and cable sleeve position accuracy nature, guarantee that each hoist and mount accessory and cable sleeve can accurately be fixed in on its design position.
Aiming at the problems of insufficient heat insulation performance and structural strength defects of the traditional prefabricated wall board, the second technical purpose of the invention is to provide a production process of the concrete prefabricated wall board, which utilizes the heat insulation board and the operation mode of layered vibration to improve the heat insulation performance of the prefabricated wall board and ensure the structural strength of the prefabricated wall board.
In order to achieve the second technical object, the invention provides the following technical solutions: a production process of a concrete prefabricated wall panel comprises the following steps:
s1, cleaning the die: selecting a corresponding pouring mold according to design requirements, and cleaning the pouring mold;
s2, assembling the die: assembling and fixing the casting mold on the steel platform, and checking the size of the assembled casting mold to ensure that the size of the casting mold meets the design requirement;
s3, coating a release agent on the pouring mold;
s4, mounting the embedded component and the steel bar framework on the inner side of the pouring mold;
s5, pouring the inner wallboard: pouring concrete with theoretical cubic quantity into the pouring mould according to the design requirement of the inner wall plate, and trowelling the surface of the concrete after repeatedly vibrating the concrete; then, carrying out multi-point measurement on the concrete, supplementing or scraping partial concrete into the pouring mould according to the difference value between the real-time thickness of the concrete and the designed thickness of the inner wall plate, and trowelling the surface of the concrete;
s6, laying an insulation board: fixing the connecting pieces on two sides of the heat insulation plate by using the bolt and nut groups according to design requirements, and horizontally paving the heat insulation plate on the concrete to enable the connecting pieces to be embedded into the concrete;
s7, pouring external wall panels: pouring concrete with theoretical cubic quantity onto the heat-insulating plate according to the design requirement of the external wall plate, and trowelling the surface of the concrete on the heat-insulating plate after repeatedly vibrating the concrete; then, carrying out multi-point measurement on the concrete, supplementing or scraping partial concrete into the pouring mould according to the difference value between the real-time thickness of the concrete and the designed thickness of the external wall panel, and trowelling the surface of the concrete;
s8, respectively pouring and fixing each hoisting accessory and the cable sleeve in the corresponding embedded sleeve by using concrete;
s9, performing steam curing after finishing and calendaring;
and S10, demolding, and storing and maintaining.
By adopting the technical scheme, the heat-insulating plate is arranged between the inner wall plate and the outer wall plate, so that the heat-insulating property of the prefabricated wall plate can be greatly improved; simultaneously, the connecting piece on the heated board can greatly improve the stability of heated board in prefabricated wallboard. In addition, separate interior wallboard and side fascia through the heated board to carry out repeated vibration respectively to interior wallboard and side fascia, reduce the influence of wallboard excess thickness to the effect of vibrating, guarantee the inside closely knit nature of concrete in the prefabricated wallboard, thereby improve the structural strength of this prefabricated wallboard greatly, guarantee the shaping quality of prefabricated wallboard.
The invention is further configured to: when the embedded assembly is installed, firstly, a tool frame is used for vertically fixing an embedded sleeve on the inner side of a pouring mold; after step S7, the hoisting accessory and the cable sleeve are respectively fixed in the corresponding embedded sleeve by pouring concrete.
Through adopting above-mentioned technical scheme, in process of production, pour fixed buried sleeve earlier, then pour fixed hoist and mount accessory and cable sleeve respectively to each buried sleeve after interior wallboard and side fascia pour the shaping again, reduce external factor to the influence of hoist and mount accessory and cable sleeve position accuracy nature.
The invention is further configured to: when pouring interior wallboard and side fascia, the error of the measurement thickness of interior wallboard and side fascia and corresponding design thickness is 3mm at most.
Through adopting above-mentioned technical scheme, wallboard and side fascia when pouring error of real-time thickness and design thickness in the strict control, the shaping thickness of wallboard and side fascia is in the design error within range in the assurance, improves the shaping quality of prefabricated wallboard indirectly.
In conclusion, the invention has the following beneficial effects:
1. the heat insulation performance of the prefabricated wall board is greatly improved by pouring the fixed heat insulation board between the inner wall board and the outer wall board, the requirement of cold regions on the heat insulation performance of the building is met, and the user satisfaction is improved;
2. the connection strength of the heat insulation board, the inner wall board and the outer wall board is improved by symmetrically arranging a plurality of groups of connecting pieces on two sides of the heat insulation board; meanwhile, the thicknesses of the inner wall plate and the outer wall plate are strictly controlled, and the inner wall plate and the outer wall plate are vibrated respectively, so that the compactness of concrete in the prefabricated wall plate is effectively ensured, and the integral structural strength of the prefabricated wall plate is greatly improved;
3. the extruded polystyrene board is used for manufacturing the heat insulation board, and the excellent performance of the extruded polystyrene board is utilized to indirectly ensure that the prefabricated wallboard can be subjected to heat insulation for a long time;
4. during construction, the fixed embedded sleeve is poured in the prefabricated wallboard firstly, and then the fixed hoisting accessory and the cable sleeve are poured in the embedded sleeve, so that the hoisting and later-period decoration convenience is met, the accuracy of the positions of the hoisting accessory and the cable sleeve in the prefabricated wallboard is improved, and the forming quality of the prefabricated wallboard is further improved.
Drawings
FIG. 1 is an axial view mainly for embodying the overall structure of embodiment 1;
FIG. 2 is a schematic diagram of the overall explosive structure of example 1;
FIG. 3 is an axial view of the insulation board and the connecting member according to embodiment 1;
FIG. 4 is a side view of the embodiment 1 mainly used for showing a connection mode of a connecting piece and a heat insulation board;
FIG. 5 is an axial schematic view of embodiment 1, primarily for embodying interior wall panels;
fig. 6 is a partially enlarged view of a portion a in fig. 5, and is mainly used for embodying the embedded component.
Reference numerals: 1. an inner wall panel; 2. an external wall panel; 3. a thermal insulation board; 4. a connecting member; 41. a base plate; 42. connecting ribs; 43. reinforcing ribs; 5. a steel reinforcement cage; 6. a bolt and nut set; 7. pre-burying the assembly; 71. pre-burying a sleeve; 72. and (4) an internal embedded part.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1:
referring to the attached drawing 1, a precast concrete wallboard, including interior wallboard 1 and side fascia 2, interior wallboard 1 and side fascia 2 are reinforced concrete wallboard, and pour between the two and be fixed with heated board 3. Wherein the inner wall panel 1 will act as a load bearing wall panel; in order to ensure the structural strength of the wall panel, the thickness of the inner wall panel 1 is 100-200 mm, and a steel reinforcement framework 5 is poured and fixed in the inner wall panel; in practical application, the inner wall panel 1 mainly bears upper load and transmits the load to a main stress structure such as a lower wall panel or a foundation. The thickness of the external wall panel 2 is 50-60 mm, and the external wall panel can protect the heat-insulating board 3 and can be used as a decorative base layer of a wall body.
The insulation board 3 is made of extruded polystyrene boards, and the extruded polystyrene boards not only have excellent and lasting heat insulation and preservation performance and excellent water resistance and moisture resistance, but also have outstanding corrosion resistance and durability; therefore, pour fixed extruded polystyrene board material's heated board 3 in prefabricated wallboard and can effectively improve this prefabricated wallboard's thermal insulation performance. In actual production, the thickness of the heat-insulating plate 3 can be properly adjusted according to the requirements of regions and energy conservation, and is usually 30-80 mm.
Referring to the attached drawing 2, for further improving the joint strength between the insulation board 3 and the inner wall board 1 and the outer wall board 2, the two sides of the insulation board 3 are symmetrically provided with connecting pieces 4. With reference to fig. 3-4, the connecting members 4 are at least provided in two groups at intervals in parallel along the width direction of the insulation board 3. The connecting piece 4 comprises two backing plates 41 which are arranged in parallel at intervals, and the two backing plates 41 are both attached to the surface of one side adjacent to the heat-insulation plate 3; one side that backing plate 41 deviates from heated board 3 is equipped with splice bar 42, and splice bar 42 is parallel arrangement with the length direction of heated board 3, and the projection of splice bar 42 on heated board 3 is located two backing plates 41's intermediate position just. Meanwhile, reinforcing ribs 43 are welded and fixed between any one of the backing plates 41 and the corresponding connecting ribs 42 in the same connecting piece 4, the reinforcing ribs 43 are of a continuous bending structure, and the two reinforcing ribs 43 in the same connecting piece 4 are symmetrically arranged. During actual assembly, a bolt and nut group 6 for fixedly connecting the other side of the insulation board 3 with the corresponding backing plate 41 is arranged on any backing plate 41 in a penetrating manner, and two groups of the bolt and nut group 6 are arranged along the length direction of the backing plate 41 at least at uniform intervals. The bolt and nut group 6 can fix the heat-insulating plate 3 and the connecting pieces 4 on the two sides of the heat-insulating plate into a whole, and the connecting pieces 4 on the two sides of the heat-insulating plate 3 are loosened; in actual production, the connecting piece 4 of 3 both sides of heated board is pour respectively and is fixed in interior wallboard 1 and side fascia 2, can greatly improve heated board 3 and interior wallboard 1 and side fascia 2's joint strength, and then guarantees the shaping quality of this prefabricated wallboard.
Referring to fig. 5-6, a pre-buried assembly 7 is further poured and fixed in the prefabricated wall panel, and the pre-buried assembly 7 comprises a pre-buried sleeve 71 and an inner pre-buried part 72 arranged in the pre-buried sleeve 71; wherein, the embedded sleeve 71 is equipped with the multiunit, and each embedded sleeve 71 pours respectively and is fixed in interior wallboard 1. The inner embedded parts 72 are arranged in one-to-one correspondence with the embedded sleeves 71, and each inner embedded part 72 is poured and fixed in the corresponding embedded sleeve 71. The inner embedded part 72 is a hoisting accessory or a cable sleeve, and the corresponding embedded mode of the embedded sleeve 71 in the prefabricated wall board is different according to the design requirements of the hoisting accessory and the cable sleeve; for the hoisting accessory, taking a threaded sleeve as an example, the hoisting accessory is vertically poured and fixed in the inner wallboard 1 corresponding to the embedded sleeve 71, and an opening on one side of the embedded sleeve, which is far away from the outer wallboard 2, is kept smooth; for cable sleeve, consider the demand that the cable was worn to establish in the later stage, correspond buried sleeve 71 and run through whole prefabricated wallboard perpendicularly. After the embedded sleeves 71 are poured and fixed, each hoisting accessory and the cable sleeve are respectively poured and fixed in the corresponding embedded sleeve 71 through concrete.
The working principle of the embodiment is as follows:
the insulation board 3 made of extruded polystyrene board is poured and fixed between the inner wall board 1 and the outer wall board 2, so that the insulation performance of the traditional prefabricated wall board is greatly improved; meanwhile, the connecting pieces 4 are arranged on the two sides of the heat insulation plate 3, so that the connecting strength between the heat insulation plate 3 and the inner wall plate 1 and the outer wall plate 2 is greatly improved by means of the connecting pieces 4; in addition, through pouring fixed pre-buried subassembly 7 in prefabricated wallboard, improve the convenience of this prefabricated wallboard hoist and mount and fitment.
Example 2:
referring to fig. 2, a process for producing a concrete prefabricated wall panel includes the following steps:
s1, cleaning the die: selecting a corresponding pouring mold according to design requirements, and cleaning the pouring mold.
S2, assembling the die: and assembling and fixing the pouring mold on the steel platform, and checking the size of the assembled pouring mold to ensure that the size of the pouring mold meets the design requirement.
And S3, coating a release agent on the pouring mold.
And S4, installing the embedded sleeve 71 and the steel reinforcement framework 5 on the inner side of the pouring mold.
S5, pouring the inner wallboard 1: pouring concrete with theoretical cubic quantity into the pouring mould according to the design requirement of the inner wall plate 1, and trowelling the surface of the concrete after repeatedly vibrating the concrete; and then, carrying out multi-point measurement on the concrete, supplementing or scraping partial concrete into the pouring mould according to the difference value between the real-time thickness of the concrete and the designed thickness of the inner wall plate 1, and leveling the surface of the concrete.
S6, laying the heat preservation plate 3: the connecting pieces 4 are fixed on two sides of the heat insulation plate 3 by the bolt and nut sets 6 according to design requirements, and the heat insulation plate 3 is horizontally laid on concrete, so that the connecting pieces 4 are embedded into the concrete.
S7, pouring the external wall panel 2: pouring concrete with theoretical cubic quantity onto the heat insulation board 3 according to the design requirement of the external wall board 2, and trowelling the surface of the concrete on the heat insulation board 3 after repeatedly vibrating the concrete; and then, carrying out multi-point measurement on the concrete, supplementing or scraping partial concrete into the pouring mould according to the difference value between the real-time thickness of the concrete and the designed thickness of the external wall panel 2, and leveling the surface of the concrete.
And S8, respectively pouring and fixing the hoisting accessories and the cable sleeves in the corresponding embedded sleeves 71 by using concrete.
And S9, performing steam curing after finishing and calendaring.
And S10, demolding, and storing and maintaining.
Although the embedded assembly 7 includes the embedded sleeves 71, the hoisting accessories and the cable sleeves, in order to reduce the influence of external factors on the installation accuracy of the hoisting accessories and the cable sleeves in actual operation, the embedded sleeves 71 are vertically fixed on the inner side of the casting mold through the tooling frame in step S4, and each embedded sleeve 71 is exactly located at the design position of the corresponding hoisting accessory and the cable sleeve; after step S7 is completed, each embedded sleeve 71 is fixed in the prefabricated wall panel by pouring. At this time, each hoisting accessory and the cable sleeve are manually inserted into the corresponding embedded sleeve 71, and concrete is poured into the gap between the hoisting accessory and the cable sleeve; before the concrete is condensed, manually adjusting and confirming that the hoisting accessory and the cable sleeve are accurately positioned on the designed positions; when the concrete is completely condensed, the hoisting accessory and the cable sleeve are poured and fixed in the corresponding embedded sleeve 71. Through this kind of mode, can greatly improve the accuracy nature of hoist and mount accessory and cable sleeve installation position.
In the pouring process of the inner wall plate 1 and the outer wall plate 2, the thickness of concrete is detected in real time through multi-point measurement for ensuring the pouring quality, and the error between the real-time thickness of the concrete and the corresponding design thickness is ensured to be within 3 mm. Preferably, the thickness of the concrete before setting is slightly greater than its design thickness; as such, after the concrete sets, the thicknesses of the interior and exterior wall panels 1 and 2 are slightly reduced so that their actual thicknesses are substantially equal to the corresponding design thicknesses.
In the actual production process, after the inner wall panel 1 is poured and before the outer wall panel 2 is poured, the insulation board 3 is paved on the inner wall panel 1; at this moment, for reducing the external wall panel 2 and pouring the influence of operation to heated board 3, can guarantee the accuracy nature of heated board 3 laying position earlier heated board 3 with pouring mould fixed connection. And, through this kind of mode, pour operation with the help of heated board 3 with interior wallboard 1 and pour the operation with side fascia 2 and separate to carry out repeated vibration respectively to interior wallboard 1 and side fascia 2, reduce the influence of wallboard excess thickness to the effect of vibrating, guarantee the inside closely knit nature of concrete in the prefabricated wallboard, thereby help improving the structural strength of this prefabricated wallboard.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. A concrete prefabricated wall panel sequentially comprises an inner wall panel (1) and an outer wall panel (2) from inside to outside, and is characterized in that a heat insulation board (3) is fixedly poured between the inner wall panel (1) and the outer wall panel (2); connecting pieces (4) are fixed on two side faces of the heat insulation board (3), and the connecting pieces (4) on the two sides of the heat insulation board (3) are respectively poured and fixed in the inner wall board (1) and the outer wall board (2);
the connecting piece (4) comprises two backing plates (41) which are arranged in parallel at intervals, and the two backing plates (41) are attached and fixed on one side of the heat-insulation plate (3); connecting ribs (42) are arranged on one side, away from the heat insulation plate (3), of the backing plate (41) in parallel, reinforcing ribs (43) are welded and fixed between the two backing plates (41) and the connecting ribs (42), and the reinforcing ribs (43) are of a continuous bending structure; the projection of the connecting rib (42) on the heat insulation plate (3) is just positioned at the middle position of the two backing plates (41),
the connecting pieces (4) are at least arranged in two groups at intervals in parallel along the width direction of the heat insulation board (3); connecting piece (4) are the symmetry setting in heated board (3) both sides, and arbitrary all wear to be equipped with in backing plate (41) and be used for fixed connection heated board (3) opposite side to correspond bolt and nut group (6) of backing plate (41), bolt and nut group (6) are equipped with two sets ofly along the at least even interval of length direction of backing plate (41).
2. The precast concrete wall panel according to claim 1, characterized in that the inner wall panel (1) is a reinforced concrete wall panel, the thickness of the inner wall panel (1) is 100-200 mm, and a steel reinforcement framework (5) is cast and fixed in the inner wall panel (1).
3. The precast concrete wall panel according to claim 1, wherein the insulation board (3) is an extruded polystyrene board with a thickness of 30-80 mm.
4. The precast concrete wall panel according to claim 1, wherein the outer wall panel (2) is a reinforced concrete wall panel, and the thickness of the outer wall panel (2) is 50-60 mm.
5. The precast concrete wall panel according to claim 1, characterized in that a pre-embedded assembly (7) is further fixedly cast in the precast concrete wall panel, the pre-embedded assembly (7) comprises a pre-embedded sleeve (71) and an inner pre-embedded part (72), the pre-embedded sleeve (71) is fixedly cast in the precast concrete wall panel, and the inner pre-embedded part (72) is fixedly cast in the pre-embedded sleeve (71); the inner embedded part (72) is a hoisting accessory or a cable sleeve.
6. A process for the production of a prefabricated concrete wall panel according to any one of claims 1 to 5, comprising the following steps:
s1, cleaning the die: selecting a corresponding pouring mold according to design requirements, and cleaning the pouring mold;
s2, assembling the die: assembling and fixing the casting mold on the steel platform, and checking the size of the assembled casting mold to ensure that the size of the casting mold meets the design requirement;
s3, coating a release agent on the pouring mold;
s4, mounting the embedded component (7) and the steel bar framework (5) on the inner side of the pouring mold;
s5, pouring the inner wallboard (1): pouring concrete with theoretical cubic quantity into the pouring mould according to the design requirement of the inner wall board (1), and trowelling the surface of the concrete after repeatedly vibrating the concrete; then, carrying out multi-point measurement on the concrete, supplementing or scraping partial concrete into the pouring mould according to the difference value between the real-time thickness of the concrete and the design thickness of the inner wall plate (1), and trowelling the surface of the concrete;
s6, paving the heat preservation board (3): fixing the connecting pieces (4) on two sides of the heat insulation board (3) by using bolt and nut sets (6) according to design requirements, and horizontally paving the heat insulation board (3) on concrete to enable the connecting pieces (4) to be embedded into the concrete;
s7, pouring the external wall panel (2): pouring concrete with theoretical cubic quantity onto the heat insulation board (3) according to the design requirement of the external wall board (2), and trowelling the surface of the concrete on the heat insulation board (3) after repeatedly vibrating the concrete; then, carrying out multi-point measurement on the concrete, supplementing or scraping partial concrete into the pouring mould according to the difference value between the real-time thickness of the concrete and the design thickness of the external wall panel (2), and trowelling the surface of the concrete;
s8, respectively pouring and fixing each hoisting accessory and each cable sleeve in the corresponding embedded sleeve (71) by using concrete;
s9, performing steam curing after finishing and calendaring;
and S10, demolding, and storing and maintaining.
7. The production process of the concrete prefabricated wall panel is characterized in that when the embedded components (7) are installed, the embedded sleeves are vertically fixed on the inner side of the pouring mold by using a tool frame; after step S7, the hoisting accessory and the cable sleeve are respectively fixed in the corresponding embedded sleeve (71) by pouring with concrete.
8. A process for the production of precast concrete panels according to claim 6, wherein the error of the measured thickness of the inner wall panel (1) and the outer wall panel (2) from the corresponding design thickness is at most 3mm when the inner wall panel (1) and the outer wall panel (2) are cast.
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| CN109049294B true CN109049294B (en) | 2020-09-15 |
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| CN110629928A (en) * | 2019-07-03 | 2019-12-31 | 辽宁煜梽新型建材有限公司 | Site construction method of external wall panel |
| CN111497003A (en) * | 2020-04-20 | 2020-08-07 | 建华建材交通科技(湖北)有限公司 | Production process of prefabricated overhaul small stand column |
| CN112976284A (en) * | 2021-02-03 | 2021-06-18 | 中核(江苏)绿色建筑产业发展有限公司 | Preparation method of external wall prefabricated slab |
| CN113059681A (en) * | 2021-02-23 | 2021-07-02 | 薄永强 | Production method of thermal insulation external wall panel |
| CN113374209B (en) * | 2021-06-23 | 2024-03-08 | 上海建工建材科技集团股份有限公司 | UHPC external wall panel and back attached steel frame connection method |
| CN113958024B (en) * | 2021-10-12 | 2023-05-05 | 山东邦得绿建建材科技有限公司 | Assembled heat preservation integrated external wall board with built-in hoisting structure |
| CN113997389B (en) * | 2021-11-16 | 2023-04-25 | 苏州华昇建筑科技有限公司 | Prefabricated part forming die and prefabricated part processing method |
| CN114135021B (en) * | 2021-12-03 | 2023-02-24 | 郑州大学 | Fiber-recycled concrete prefabricated wallboard, and preparation device and preparation method thereof |
| CN114856196B (en) * | 2022-06-15 | 2023-07-07 | 上海宝冶集团有限公司 | Construction method of floor slab and concrete prefabricated member |
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| JP4891141B2 (en) * | 2007-04-25 | 2012-03-07 | ミサワホーム株式会社 | Floor support structure and torso panel |
| CN102650152A (en) * | 2012-05-14 | 2012-08-29 | 中国十七冶集团有限公司 | Prefabricated sandwich heat-preservation heat insulation concrete external wall panel and fabrication method |
| CN106760158B (en) * | 2017-01-23 | 2022-08-30 | 中国建筑第八工程局有限公司 | External hanging type precast concrete sandwich heat-insulation wallboard and assembly system and construction method thereof |
| CN207130960U (en) * | 2017-04-11 | 2018-03-23 | 杨昌现 | A kind of antidetonation hollow insulation wallboard and its metal securing member |
| CN108149814A (en) * | 2017-11-24 | 2018-06-12 | 上海建工集团股份有限公司 | Load-bearing, heat insulation integrated novel prefabricated assembled shear wall and construction method |
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