Assembled double-skin wall and production method thereof

Abstract

The present invention discloses an assembled double-skin wall and a production method thereof. A first threaded sleeve is provided between the outer wall panels and / or inner wall panels of the provided assembled double-skin wall, so as to facilitate the movement, transportation, support, adjustment, and installation and fixation of the assembled double-skin wall. At the same time, the first threaded sleeve can be used in the production of the double-skin wall, which is helpful for supporting the steel cage, flipping the outer wall panel and the steel cage, and docking the outer wall panel with the inner wall panel. The support frame is installed in the first threaded sleeve of the outer wall panel by a screw rod, and the existing jack structure can be used to adjust the position of the outer wall panel, so as to achieve precise docking and matching of the outer wall panel with the inner wall panel.

Description

Technical Field

[0001] The invention belongs to the technical field of double-skin walls, and in particular relates to an assembled double-skin wall and a production method thereof. Background Art

[0002] Precast concrete double wall, with precast concrete panels on both sides connected as a whole by steel cage. In the production process of double wall components, the steel cage needs to be erected in the wall panel casting area first, and after the concrete panel on one side is cast and the concrete on that side is cured, the semi-finished double wall and the steel cage fixed to the wall (only one side of the wall) are turned 180° by large-scale turning equipment, and then the turned steel cage is moved and pressed into the newly cast concrete panel, and the double wall is formed after curing.

[0003] The existing double-skin wall and its production method have the following problems:

[0004] 1. The existing double-skin wall needs ropes to be wrapped around the periphery of the double-skin wall for binding when moving, and it is necessary to make grooves in the double-skin wall during installation and pouring to use fixings for support and adjustment, which is very inconvenient;

[0005] 2. When the steel cage is placed in the wall panel casting area, it is necessary to set a bracket support on the periphery of the steel cage to ensure that one side of the steel cage is buried inside the wall;

[0006] 3. When the semi-finished double-skin wall is turned over, it needs to be turned over and re-placed in the new wall panel casting area. Large turning equipment is required to clamp, turn over and move the semi-finished double-skin wall, which greatly increases the production input cost of the double-skin wall;

[0007] 4. When the steel cage of the turned-over semi-finished double-skin wall is pressed onto the newly poured concrete slab, the semi-finished double-skin wall tends to tilt and have large dimensional deviations, resulting in uneven walls on both sides of the double-skin wall after forming. Summary of the invention

[0008] In view of the problems and shortcomings of the above-mentioned prior art, the present invention provides an assembled double-skin wall and a production method thereof. A first threaded sleeve is provided between the outer wall panels and / or inner wall panels of the provided assembled double-skin wall to facilitate the movement, transportation, support, adjustment, and installation and fixation of the assembled double-skin wall. At the same time, the first threaded sleeve can be used in the production of double-skin walls to help support the steel cage, flip the outer wall panels and the steel cage, and dock the outer wall panels with the inner wall panels. The support frame is installed in the first threaded sleeve of the outer wall panel by means of a screw rod, and the existing jack structure can be used to adjust the position of the outer wall panel, thereby achieving precise docking and matching of the outer wall panel with the inner wall panel.

[0009] The present invention is achieved through the following technical solutions:

[0010] An assembled double-skin wall comprises an outer wall panel, an inner wall panel and a steel cage connecting the outer wall panel and the inner wall panel, a cavity is formed between the outer wall panel and the inner wall panel, the steel cage comprises an outer steel mesh embedded in the outer wall panel, an inner steel mesh embedded in the inner wall panel and a plurality of web bars connecting the outer steel mesh and the inner steel mesh, the outer steel mesh, the inner steel mesh and the web bars form a plurality of triangular frames to improve the stability between the outer wall panel and the inner wall panel. First threaded sleeves penetrating the outer wall panel or the inner wall panel are welded on both sides of the steel cage, so that the fixing part can be fixedly installed to the double-skin wall through the first threaded sleeve, and the double-skin wall can be moved, turned over and adjusted in posture. At least four groups of first threaded sleeves are embedded in the outer wall panel and the inner wall panel, and the first threaded sleeve is in a blocked state on the side close to the steel cage to prevent concrete from flowing into the first threaded sleeve.

[0011] Further, the second threaded sleeves are welded around the steel cage; or the second threaded sleeves are welded on the upper and lower sides of the steel cage; or the second threaded sleeves are welded on the left and right sides of the steel cage;

[0012] The second threaded sleeve is welded to the web reinforcement and is located in the cavity, which is convenient for moving and flipping the double-skin wall. The second threaded sleeve can improve the connection strength of the double-skin wall by setting a connecting screw between the second threaded sleeves of adjacent double-skin walls when installing the double-skin wall.

[0013] Furthermore, the outer steel mesh includes a first upper-chord steel bar, a second lower-chord steel bar parallel to the first upper-chord steel bar, and a transverse steel bar connecting the first upper-chord steel bar and the second lower-chord steel bar; the inner steel mesh includes a first lower-chord steel bar, a second upper-chord steel bar parallel to the first lower-chord steel bar, and a transverse steel bar connecting the first lower-chord steel bar and the second upper-chord steel bar; the two first lower-chord steel bars are connected to the same first upper-chord steel bar through web bars to form a first steel truss; the two second lower-chord steel bars are connected to the same second upper-chord steel bar through web bars to form a second steel truss; along the extension direction of the transverse steel bars, the first steel truss and the second steel truss are staggered to improve the structural strength of the steel cage, while ensuring that the connection strength between the exterior wall panel and the steel cage is equal to the connection strength between the interior wall panel and the steel cage.

[0014] Furthermore, the outer side of the exterior wall panel and / or the inner side of the interior wall panel are covered with an insulation board to improve the insulation performance of the prefabricated double-skin wall. The insulation board has an affinity base surface that is affinity with concrete, which increases the connection strength between the insulation board and the exterior wall panel and between the insulation board and the interior wall panel.

[0015] A method for producing an assembled double-skin wall comprises the following steps:

[0016] Step S1, preparing a steel cage, welding the web steel bars between the outer steel mesh and the inner steel mesh to form a steel cage, and welding the first threaded sleeve to the outer steel mesh and the inner steel mesh;

[0017] Step S2, assembling the exterior wall panel mold, installing two wide side baffles and two long side baffles on the mold platform to enclose a concrete exterior wall panel casting area, so as to form the exterior wall panel by pouring concrete;

[0018] Step S3, placing the steel cage, using a crane to hoist the steel cage to the outer wall panel casting area, and making the first threaded sleeve fixed to the outer steel mesh abut against the surface of the formwork table, so as to support the steel cage located in the outer wall panel casting area, eliminating the process of erecting support members outside the steel cage;

[0019] Step S4, preparing the exterior wall panels, pouring concrete into the exterior wall panel pouring area and vibrating it, and steaming and curing it after the vibration is completed to form the exterior wall panels, thereby completing the preparation of the exterior wall panels;

[0020] Step S5, prefabricate the inner wall panels, install two wide side baffles and two long side baffles on the new formwork platform to form a concrete inner wall panel casting area, and pour concrete into the inner wall panel casting area to achieve the pouring of concrete in the inner wall panel casting area, which is convenient for pouring;

[0021] Step S6, docking the exterior wall panel with the interior wall panel, lifting the exterior wall panel out of the exterior wall panel casting area, turning over the exterior wall panel, and moving the exterior wall panel to the top of the interior wall panel, installing the support frame to the first threaded sleeve of the exterior wall panel, adjusting the postures of the jacks on both sides of the support frame to calibrate the position of the exterior wall panel, so as to adjust the position of the exterior wall panel and the steel cage, ensure that the exterior wall panel and the interior wall panel are flush with each other, and improve the quality of the produced double-skin wall;

[0022] Step S7, preparing the inner wall panels, vibrating the concrete in the casting area of ​​the inner wall panels, and steaming and curing the concrete after the vibration is completed to form a double wall, thereby reducing the production cost of the assembled double wall and improving the quality of the double wall.

[0023] Further, in step S1, the first upper chord steel bar and the second lower chord steel bar are both laid perpendicularly to the transverse steel bar to above the transverse steel bar, and tied with wire to form an outer steel mesh, and the first lower chord steel bar and the second upper chord steel bar are both laid perpendicularly to the transverse steel bar, and tied with wire to form an inner steel mesh;

[0024] The web bars are welded between the first upper chord steel bars and the first lower chord steel bars and between the second upper chord steel bars and the second lower chord steel bars, and the first steel bar trusses and the second steel bar trusses are staggered.

[0025] The second threaded sleeve is welded and fixed to the web reinforcement to facilitate installation and fixation between adjacent double-skin walls and facilitate flipping of the double-skin walls during production.

[0026] Further, in step S2 and / or step S5, firstly, a long side baffle is fixedly mounted on the formwork platform using a fixing block, then two wide side baffles are pressed against the fixed long side baffles and moved to a set position, and finally another long side baffle is pushed toward the fixed long side baffles to squeeze and fix the two wide side baffles between the two long side baffles, thereby improving the tightness of the enclosed concrete pouring area. The two wide side baffles and one long side baffle are fixed using a fixing block;

[0027] The wide side baffles and the long side baffles both include a bottom plate, a top plate, and side plates connecting the bottom plate and the top plate. Along the extension direction of the bottom plate, a plurality of supporting ribs are evenly fixed between the bottom plate, the side plate, and the top plate, thereby improving the structural strength of the wide side baffles and the long side baffles.

[0028] Furthermore, step S6 further includes:

[0029] Step S6.1, using a crane to flip the exterior wall panel, screwing the screw at the end of the main rope of the crane to the first threaded sleeve on the inner steel mesh, and the crane to lift the exterior wall panel out of the exterior wall panel casting area;

[0030] Step S6.2, screwing the screw at the end of the auxiliary rope of the overhead crane to the second threaded sleeve, and the overhead crane releases the main rope, so that the exterior wall panel and the steel cage are transformed from a horizontal state to a vertical state;

[0031] Step S6.3, remove the screw at the end of the main rope of the overhead crane from the first threaded sleeve on the inner steel mesh, and install the screw at the end of the main rope of the overhead crane to the first threaded sleeve on the outer wall panel, tighten the main rope of the overhead crane to flip the outer wall panel and the steel cage from a vertical state to a horizontal state, and the outer wall panel is located above the steel cage, and remove the screw on the second threaded sleeve;

[0032] Step S6.4, the crane moves the outer wall panel and the steel cage to just above the inner wall panel casting area, releases the main rope to initially connect the outer wall panel with the inner wall panel, and removes the screw on the first threaded sleeve.

[0033] Furthermore, step S6 further includes:

[0034] Step S6.5, fixing the support frame to the first threaded sleeve on the exterior wall panel by means of fixing bolts;

[0035] Step S6.6, installing jacks on both sides of the support frame, and lifting the support frame by the jacks so that the outer wall panel and the inner wall panel are flush with each other, so as to achieve precise docking of the outer wall panel and the inner wall panel;

[0036] Spherical concave surfaces are arranged at both ends of the support frame, and a supporting ball matching the spherical concave surfaces is fixed on the top of the jack, so as to adjust the inclination of the exterior wall panel and keep the exterior wall panel in a horizontal state.

[0037] Furthermore, step S2 also includes: laying an insulation board on the outer wall panel casting area;

[0038] Step S5 also includes: before pouring concrete into the inner wall panel pouring area, laying an insulation board into the inner wall panel pouring area. By laying the insulation board into the pouring area, it is more helpful to separate the outer wall panel and the inner wall panel from the mold platform surface.

[0039] Beneficial effects of the present invention:

[0040] 1. Provided is an assembled double-skin wall, wherein a first threaded sleeve is provided between the outer wall panels and / or the inner wall panels, so as to facilitate the movement, transportation, support, adjustment and installation and fixation of the assembled double-skin wall;

[0041] 2. The first threaded sleeve can produce double-skin walls, which is helpful for supporting the steel cage, flipping the outer wall panels and the steel cage, and docking the outer wall panels with the inner wall panels;

[0042] 3. The support frame is installed into the first threaded sleeve of the exterior wall panel through a screw rod, and the position of the exterior wall panel can be adjusted by using the existing jack structure, so as to achieve precise docking and matching between the exterior wall panel and the interior wall panel;

[0043] 4. Inside the steel cage, the first steel truss and the second steel truss are staggered to ensure the consistency of the connection strength between the walls on both sides of the double-skin wall and the steel cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A structural schematic diagram for illustrating a schematic implementation of an assembled double-skin wall in the present invention;

[0045] Figure 2 A side view for illustrating a schematic embodiment of an assembled double-skin wall in the present invention;

[0046] Figure 3 To illustrate Figure 2 A partial enlarged schematic diagram in the middle;

[0047] Figure 4 A top view for illustrating a schematic embodiment of an assembled double-skin wall in the present invention;

[0048] Figure 5 To illustrate Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0049] Figure 6 A structural schematic diagram for illustrating a schematic implementation of a steel reinforcement cage of an assembled double-skin wall in the present invention;

[0050] Figure 7A structural schematic diagram for illustrating an exemplary implementation of step S4 of a method for producing an assembled double-skin wall in the present invention;

[0051] Figure 8 To illustrate Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0052] Fig. 9 A schematic diagram for illustrating an operation of a schematic implementation method in step S6.1 of a method for producing a prefabricated double-skin wall in the present invention;

[0053] Fig.10 A schematic diagram for illustrating an operation of a schematic implementation method in step S6.2 of a method for producing a prefabricated double-skin wall in the present invention;

[0054] Fig.11 A schematic diagram for illustrating an operation of a schematic implementation method in step S6.3 of a method for producing a prefabricated double-skin wall in the present invention;

[0055] Fig.12 A schematic diagram for illustrating an operation of a schematic implementation method in step S6.6 of a method for producing an assembled double-skin wall in the present invention;

[0056] Fig.13 To illustrate Fig.12 The partial enlarged schematic diagram of point D in the middle;

[0057] Fig.14 A schematic diagram for explaining the operation of another exemplary embodiment of step S6.6 of a method for producing an assembled double-skin wall in the present invention;

[0058] Fig.15 To illustrate Fig.14 A partial enlarged schematic diagram of point E in the middle.

[0059] List of parts and reference numerals:

[0060] 1. Exterior wall panel; 2. Interior wall panel; 3. Steel cage; 31. External steel mesh; 32. Internal steel mesh; 33. Web reinforcement; 34. First upper chord reinforcement; 35. First lower chord reinforcement; 36. Second upper chord reinforcement; 37. Second lower chord reinforcement; 38. Transverse reinforcement; 4. First threaded sleeve; 5. Second threaded sleeve; 6. Insulation board; 7. Formwork; 71. Wide side baffle; 72. Long side baffle; 721. Bottom plate; 722. Top plate; 723. Side plate; 724. Support rib; 73. Fixing block; 74. Main rope; 75. Auxiliary rope; 8. Support frame; 81. Jack; 811. Support ball; 82. Spherical concave surface. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.

[0063] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention refer not only to changes in position, but also to movements such as rotation and rolling in which there is no relative change in position but a change in state.

[0064] Finally, it should be noted that when a component is referred to as being "located" or "set on" another component, it can be on the other component or there can be an intermediate component at the same time. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0065] like Figures 1 to 6 The present invention shows an assembled double-skin wall, comprising an outer wall panel 1, an inner wall panel 2, and a steel cage 3 connecting the outer wall panel 1 and the inner wall panel 2. A cavity is formed between the outer wall panel 1 and the inner wall panel 2. The steel cage 3 comprises an outer steel mesh 31 embedded in the outer wall panel 1, an inner steel mesh 32 embedded in the inner wall panel 2, and a plurality of web steel bars 33 connecting the outer steel mesh 31 and the inner steel mesh 32. The outer steel mesh 31, the inner steel mesh 32 and the web steel bars 33 form a plurality of triangular frames to improve the stability between the outer wall panel 1 and the inner wall panel 2. First threaded sleeves 4 penetrating the outer wall panel 1 or the inner wall panel 2 are welded on both sides of the steel cage 3, so that the fixing parts can be fixedly installed to the double-skin wall through the first threaded sleeves 4, and the double-skin wall can be moved, turned over and adjusted in posture. At least four groups of first threaded sleeves 4 are embedded in both the outer wall panel 1 and the inner wall panel 2. The first threaded sleeves 4 are in a blocked state on the side close to the steel cage 3 to prevent concrete from flowing into the first threaded sleeves 4.

[0066] In one embodiment, a first threaded sleeve is welded on both sides of the steel cage 3, so that the first threaded sleeve 4 is embedded and installed in both the outer wall panel 1 and the inner wall panel 2 of the produced double-skin wall. In the subsequent construction process, after the prefabricated double-skin wall is transported to the construction site, the screw at the end of the rope is screwed into the first threaded sleeve 4, and then the tower crane realizes the lifting and transportation of the double-skin wall by hanging the rope, eliminating the step of winding the rope around the double-skin wall. In order to ensure the safety of the lifting, after the tower crane lifts the double-skin wall to a certain distance from the ground, the double-skin wall can be manually wrapped and tightened with a safety rope, which is convenient and quick, and improves the safety of lifting the double-skin wall.

[0067] In one embodiment, before pouring the cavity of the double wall, it is necessary to use a fixing member (fixing rod) to fix the double wall diagonally. When the fixing member (fixing rod) is installed on the double wall, it is necessary to drill a hole in the double wall to fix the fixing member to the double wall. By setting a first threaded sleeve 4 in the outer wall panel 1 and the inner wall panel 2 of the double wall, the fixing member (fixing rod) can fix the double wall by a screw or bolt, eliminating the step of drilling holes, which is convenient and quick.

[0068] In one embodiment, a first threaded sleeve 4 is welded to one side of the steel cage 3 . Specifically, the first threaded sleeve 4 is welded to the outer steel mesh 31 .

[0069] It should be noted that the first threaded sleeve 4 is a threaded sleeve with a one-way opening, and the opening of the first threaded sleeve 4 points to the side away from the steel cage 3 .

[0070] In one embodiment, the outer steel mesh 31 is buried in the middle of the outer wall panel 1 , and the inner steel mesh 32 is buried in the middle of the inner wall panel 2 .

[0071] Preferably, the second threaded sleeve 5 is welded around the steel cage 3; or the second threaded sleeve 5 is welded on the upper and lower sides of the steel cage 3; or the second threaded sleeve 5 is welded on the left and right sides of the steel cage 3;

[0072] The second threaded sleeve 5 is welded to the web reinforcement 33 and is located in the cavity, which is convenient for moving and flipping the double skin wall. The second threaded sleeve 5 can improve the connection strength of the double skin wall by setting a connecting screw between the second threaded sleeves 5 of adjacent double skin walls when installing the double skin wall.

[0073] In one embodiment, a second threaded sleeve 5 is provided on both upper and lower sides of the steel cage 3, and the second threaded sleeve 5 is provided to facilitate the subsequent lifting or flipping of the double-skin wall. At the same time, during construction, a fixing screw or threaded steel bar can be installed in the second threaded sleeve 5, so that the fixing screw or threaded steel bar protruding from the double-skin wall cooperates with the wall body on the upper and / or lower sides of the double-skin wall, thereby improving the connection strength of the upper and lower sides of the double-skin wall.

[0074] In one embodiment, a second threaded sleeve 5 is welded on the left and right sides of the steel cage 3. During construction, a fixing screw or threaded steel bar can be installed in the second threaded sleeve 5, so that the fixing screw or threaded steel bar protruding from the double skin wall cooperates with the wall on the left and / or right side of the double skin wall to improve the connection strength of the upper and lower sides of the double skin wall. When two groups of the same type of double skin walls are used, the second threaded sleeves 5 of the two adjacent double skin walls can be connected simultaneously using a fixing screw or threaded steel bar to further improve the connection strength between the two adjacent double skin walls.

[0075] It should be noted that the second threaded sleeve 5 is welded to the cavity between the outer wall panel 1 and the inner wall panel 2, that is, the outer diameter of the second threaded sleeve 5 is smaller than the width of the cavity. The second threaded sleeve 5 is open at both ends, which helps to adjust the distance of the fixing screw or threaded steel bar protruding from the double wall, so that the fixing screw or threaded steel bar can penetrate into the inside of the double wall.

[0076] Preferably, the outer steel mesh 31 includes a first upper-chord steel bar 34, a second lower-chord steel bar 37 parallel to the first upper-chord steel bar 34, and a transverse steel bar 38 connecting the first upper-chord steel bar 34 and the second lower-chord steel bar 37, and the inner steel mesh 32 includes a first lower-chord steel bar 35, a second upper-chord steel bar 36 parallel to the first lower-chord steel bar 35, and a transverse steel bar 38 connecting the first lower-chord steel bar 35 and the second upper-chord steel bar 36. The two first lower-chord steel bars 35 are connected to the same first upper-chord steel bar 34 through the web steel bars 33 to form a first steel bar truss, and the two second lower-chord steel bars 37 are connected to the same second upper-chord steel bar 36 through the web steel bars 33 to form a second steel bar truss. Along the extension direction of the transverse steel bars 38, the first steel bar trusses and the second steel bar trusses are staggered to improve the structural strength of the steel cage 3, and at the same time can ensure that the connection strength between the exterior wall panel 1 and the steel cage 3 is equal to the connection strength between the interior wall panel 2 and the steel cage 3.

[0077] In one embodiment, it should be noted that in the prior art, multiple groups of steel trusses are often arranged in parallel to connect the two side walls of the double wall, and the connection strength is low, and the connection strength between the two side walls and the steel trusses is greatly different. The structure of the steel truss is in the shape of a triangular prism. The steel cage 3 used in the device has the first steel truss and the second steel truss in opposite directions. The first steel truss and the second steel truss are arranged in an interlaced manner, and transverse steel bars 38 are arranged on the first steel truss and the second steel truss for fixing, so as to form a high-strength steel cage 3. The double wall made of this steel cage 3 has the same connection strength between the outer wall panel 1 and the steel cage 3 as that between the inner wall panel 2 and the steel cage 3.

[0078] Preferably, the outer side of the exterior wall panel 1 and / or the inner side of the interior wall panel 2 are covered with an insulation board 6 to improve the thermal insulation performance of the prefabricated double-skin wall. The insulation board 6 has an affinity base surface that is affinity with concrete, which increases the connection strength between the insulation board 6 and the exterior wall panel 1 and between the insulation board 6 and the interior wall panel 2.

[0079] In one embodiment, when prefabricating double-skin walls, insulation panels 6 may be provided on the outside of the exterior wall panels 1 and the interior wall panels 2, which helps to further speed up the construction efficiency of the building.

[0080] In one embodiment, one side of the thermal insulation board 6 has an affinity base surface that is affinity with concrete, which helps to closely connect the concrete and the thermal insulation board 6 .

[0081] like Figures 7 to 15 As shown, a method for producing an assembled double-skin wall comprises the following steps:

[0082] Step S1, preparing the steel cage 3, welding the web steel bars 33 between the outer steel mesh 31 and the inner steel mesh 32 to form the steel cage 3, and welding the first threaded sleeve 4 to the outer steel mesh 31 and the inner steel mesh 32;

[0083] Step S2, assembling the mold of the exterior wall panel 1, installing two wide side baffles 71 and two long side baffles 72 on the mold platform 7 to enclose a concrete exterior wall panel casting area, so as to facilitate casting concrete to form the exterior wall panel 1;

[0084] Step S3, placing the steel cage 3, using a crane to hoist the steel cage 3 to the outer wall panel casting area, and making the first threaded sleeve 4 fixed to the outer steel mesh 31 abut against the surface of the formwork 7, so as to support the steel cage 3 located in the outer wall panel casting area, eliminating the process of erecting support members outside the steel cage 3;

[0085] In one embodiment, the existing overhead crane in the workshop is used to hoist and move the steel cage 3, which is convenient and fast and saves the equipment investment cost of the double wall. In general, when preparing the double wall, it is necessary to ensure that the outer steel mesh 31 is buried inside the outer wall panel 1, and the inner steel mesh 32 is buried inside the inner wall panel 2. When the steel mesh is placed in the outer wall panel casting area on the surface of the formwork 7, it is necessary to ensure that the outer steel mesh 31 below the steel mesh is inside the outer wall panel casting area, and the outer steel mesh 31 cannot be abutted against the surface of the formwork 7, otherwise the outer steel mesh 31 will be exposed to the outer wall panel 1. In the prior art, a support structure is often set on the outside of the steel cage 3, and the process is complicated. In this production method, when the steel cage 3 is prepared, the first threaded sleeve 4 is welded to both sides of the steel cage 3 in advance, and the length of each first threaded sleeve 4 protruding from the steel cage 3 is equal. When the steel cage 3 is placed in the outer wall panel casting area, the first threaded sleeve 4 plays a supporting role for the steel cage 3, eliminating the process of setting a support structure on the outside of the steel cage 3.

[0086] In one embodiment, when the outer steel mesh 31 of the steel cage 3 needs to be placed at the center of the exterior wall panel 1, it is only necessary to ensure that the length of the first threaded sleeve 4 protruding from the steel cage 3 is equal to half the thickness of the exterior wall panel 1 when welding the first threaded sleeve 4.

[0087] Step S4, preparing the exterior wall panel 1, pouring concrete into the exterior wall panel pouring area and vibrating it, and steaming and curing it after the vibration is completed to form the exterior wall panel 1, thereby completing the preparation of the exterior wall panel 1;

[0088] In one embodiment, a moving wheel or moving track is provided at the bottom of the formwork platform 7. After the formwork platform 7 moves to the bottom of the concrete pouring equipment, the concrete pouring equipment pours concrete into the outer wall panel pouring area. Then, a vibrating device is used to vibrate the poured concrete to form a dense concrete outer wall panel 1. After the vibration is completed, the outer wall panel 1 is sent to the steam curing device, and the steam curing time is generally at least 6 hours.

[0089] Step S5, prefabricate the inner wall panel 2, install two wide side baffles 71 and two long side baffles 72 on the new formwork platform 7 to form a concrete inner wall panel casting area, and pour concrete into the inner wall panel casting area to achieve the pouring of concrete in the inner wall panel casting area, which is convenient for pouring;

[0090] Step S6, the exterior wall panel 1 is docked with the interior wall panel 2, the exterior wall panel 1 is lifted out of the exterior wall panel casting area, the exterior wall panel 1 is turned over, and the exterior wall panel 1 is moved to the top of the interior wall panel 2, the support frame 8 is installed to the first threaded sleeve 4 of the exterior wall panel 1, and the postures of the jacks 81 on both sides of the support frame 8 are adjusted to realize the position calibration of the exterior wall panel 1, so as to adjust the positions of the exterior wall panel 1 and the steel cage 3, ensure that the exterior wall panel 1 and the interior wall panel 2 are flush with each other, and improve the quality of the produced double skin wall;

[0091] It should be noted that after pouring the concrete in step S5, the concrete is in a soft state, and the time interval between step S5 and step S6 is short to prevent the concrete from solidifying and causing the steel cage 3 located under the exterior wall panel 1 to be unable to be pressed into the concrete in the pouring area of ​​the interior wall panel.

[0092] In one embodiment, before the exterior wall panel 1 is hoisted out of the exterior wall panel casting area, the side baffles and the long side baffles 72 on the formwork platform 7 can be removed to reduce the resistance of the exterior wall panel 1 being hoisted out of the formwork platform 7 .

[0093] In one embodiment, before pouring concrete in the outer wall panel pouring area and the inner wall panel pouring area, a coating of fine concrete is applied to the surface of the formwork platform 7, the wide side baffles 71 and the long side baffles 72, so that the cast outer wall panels 1 and the inner wall panels 2 can be easily separated from the formwork platform 7. In this case, when the outer wall panels 1 or the inner wall panels 2 are lifted off, it is not necessary to remove the wide side baffles 71 and the long side baffles 72.

[0094] In one embodiment, when the steel cage 3 below the exterior wall panel 1 is placed in the casting area of ​​the interior wall panel, the steel cage 3 is squeezed into the concrete area of ​​the interior wall panel 2. Due to the existence of concrete resistance, the exterior wall panel 1 placed above the casting area of ​​the interior wall panel is often in an inclined state. By installing a support frame 8 above the exterior wall panel 1 and installing jacks 81 on both sides of the support frame 8, the support frame 8 is provided with at least 2 and the jacks 81 are at least 4. By adjusting the extension degree of the jack 81, the exterior wall panel 1 is adjusted to a horizontal state so that the exterior wall panel 1 is flush with the interior wall panel 2. It should be noted that when the exterior wall panel 1 is docked with the interior wall panel 2, the more difficult part is to lift and balance the exterior wall panel 1, so the horizontality of the exterior wall panel 1 is adjusted by the support frame 8. As for the form of squeezing or pressing down the exterior wall panel 1, it can be completed by manual stepping and other methods, and the operation is much easier than lifting the exterior wall panel 1.

[0095] In one embodiment, in order to ensure the quality of the double-skin wall and save the manufacturing cost of the double-skin wall, the outer wall panel 1 is prepared with general coarse stone concrete, and the inner wall panel 2 is prepared with fine stone concrete. It is convenient to press the steel cage 3 into the fine stone concrete during production, and it is helpful to vibrate the fine stone concrete of the inner wall panel 2.

[0096] In one embodiment, before the steel cage 3 is pressed into the concrete of the inner wall panel casting area, a sealing structure such as a sealing sheet can be used to block the opening of the first threaded sleeve 4 to prevent concrete from flowing into the first threaded sleeve 4. After the double skin wall is prepared, the sealing structure such as the sealing sheet is taken out from the first threaded sleeve 4. Specifically, the sealing structure can be a sealing bolt placed in the first threaded sleeve 4.

[0097] Step S7, preparing the inner wall panels 2, vibrating the concrete in the casting area of ​​the inner wall panels, and steaming and curing the concrete after the vibration is completed to form a double-skin wall, thereby reducing the production cost of the assembled double-skin wall and improving the quality of the double-skin wall.

[0098] In one embodiment, the outer wall panels 1 and the inner wall panels 2 of the produced double-skin wall are provided with a first threaded sleeve 4 on the inner side. The double-skin wall production method mainly adopts the existing factory crane, the designed simple structure support frame 8 and the existing jack 81 structure to solve the production difficulties of the double-skin wall and greatly reduce the investment cost of producing the double-skin wall. In the production process, the double-skin wall is produced by using the production method and equipment, which saves 97% of the cost compared with the double-skin wall machines sold on the market, and the effect is the same as that of the machines on the market.

[0099] In one implementation, the support frame 8, the jack 81 and the mold platform 7 are all recyclable equipment. The generation of construction waste is reduced, and mechanical operations can be reduced and the noise of mechanical construction can be reduced during the reuse process. The double-skin wall production method is easy to operate: the double-skin wall exterior wall panel 1 has a reserved hanging point, and the worker only needs to use the crane to lift the double-skin wall exterior wall panel 1, use the support frame 8 to support the exterior wall panel 1, and fix the overall position of the double-skin wall. It is easy to disassemble and assemble, and has good adjustment performance, so that the workers can better and faster understand its construction procedures.

[0100] Preferably, in step S1, the first upper chord steel bar 34 and the second lower chord steel bar 37 are both laid perpendicularly to the transverse steel bar 38 and above the transverse steel bar 38, and tied with wires to form an outer steel mesh 31, and the first lower chord steel bar 35 and the second upper chord steel bar 36 are both laid perpendicularly to the transverse steel bar 38 and tied with wires to form an inner steel mesh 32;

[0101] The web reinforcement 33 is welded between the first upper chord reinforcement 34 and the first lower chord reinforcement 35 and between the second upper chord reinforcement 36 and the second lower chord reinforcement 37, and the first reinforcement truss and the second reinforcement truss are staggered.

[0102] The second threaded sleeve 5 is welded and fixed to the web reinforcement 33, so as to facilitate the installation and fixation between adjacent double skin walls, and to facilitate the flipping of the double skin wall during the production of the double skin wall.

[0103] In one embodiment, it should be noted that the second threaded sleeve 5 is parallel to the extension direction of the transverse reinforcement 38, and the second threaded sleeve 5 is located in the cavity between the outer wall panel 1 and the inner wall panel 2. When pouring concrete on the outer wall panel 1 and the inner wall panel 2, the concrete basically does not invade the second threaded sleeve 5.

[0104] Preferably, in step S2 and / or step S5, firstly, a long side baffle 72 is fixedly installed on the formwork platform 7 using a fixing block 73, and then two wide side baffles 71 are closely attached to the fixed long side baffle 72 and moved to a set position, and finally another long side baffle 72 is used to push toward the fixed long side baffle 72, so as to squeeze and fix the two wide side baffles 71 between the two long side baffles 72, thereby improving the tightness of the enclosed concrete pouring area. The two wide side baffles 71 and one long side baffle 72 are fixed using a fixing block 73;

[0105] The wide side baffle 71 and the long side baffle 72 both include a bottom plate 721, a top plate 722, and a side plate 723 connecting the bottom plate 721 and the top plate 722. Along the extension direction of the bottom plate 721, a plurality of supporting ribs 724 are evenly fixed between the bottom plate 721, the side plate 723 and the top plate 722, thereby improving the structural strength of the wide side baffle 71 and the long side baffle 72.

[0106] In one embodiment, a push rod mechanism can be installed on one side of a long side baffle 72. The push rod mechanism pushes the long side baffle 72 to squeeze and fix the two wide side baffles 71 between the two long side baffles 72, further increasing the tightness of the connection between the wide side baffle 71 and the long side baffle 72.

[0107] In one embodiment, a plurality of positioning holes are provided on the mold platform 7, and a limiting hole matching with the positioning holes is provided on the fixing block 73. The fixing block 73 can be locked on the mold platform 7 by bolts to fix the wide side baffle 71 or the long side baffle 72.

[0108] Preferably, step S6 further includes:

[0109] Step S6.1, using a crane to flip the exterior wall panel 1, screwing the screw at the end of the main rope 74 of the crane to the first threaded sleeve 4 on the inner steel mesh 32, and the crane to lift the exterior wall panel 1 out of the exterior wall panel casting area;

[0110] Step S6.2, screwing the screw at the end of the auxiliary rope 75 of the overhead crane to the second threaded sleeve 5, and releasing the main rope 74 of the overhead crane, so that the exterior wall panel 1 and the steel cage 3 are transformed from a horizontal state to a vertical state;

[0111] Step S6.3, remove the screw at the end of the main rope 74 of the crane from the first threaded sleeve 4 on the inner steel mesh 32, and install the screw at the end of the main rope 74 of the crane to the first threaded sleeve 4 on the exterior wall panel 1, tighten the main rope 74 of the crane to flip the exterior wall panel 1 and the steel cage 3 from a vertical state to a horizontal state, and the exterior wall panel 1 is located above the steel cage 3, and remove the screw on the second threaded sleeve 5;

[0112] Step S6.4, the crane moves the exterior wall panel 1 and the steel cage 3 to just above the casting area of ​​the interior wall panel, releases the main rope 74 to preliminarily connect the exterior wall panel 1 with the interior wall panel 2, and removes the screw on the first threaded sleeve 4.

[0113] It should be noted that in step 6.4, when the exterior wall panel 1 and the interior wall panel 2 are initially connected, the position of the exterior wall panel 1 is basically at the set position of the exterior wall panel 1, but the tilting posture of the exterior wall panel 1 is difficult to guarantee, so the tilting posture of the exterior wall panel 1 needs to be corrected subsequently.

[0114] Preferably, step S6 further includes:

[0115] Step S6.5, fixing the support frame 8 to the first threaded sleeve 4 on the exterior wall panel 1 by means of fixing bolts;

[0116] Step S6.6, installing jacks 81 on both sides of the support frame 8, and lifting the support frame 8 by the jacks 81 so that the outer wall panel 1 and the inner wall panel 2 are flush with each other, so as to achieve precise docking of the outer wall panel 1 and the inner wall panel 2;

[0117] Spherical concave surfaces 82 are provided at both ends of the support frame 8, and a supporting ball 811 matching the spherical concave surface 82 is fixed on the top of the jack 81 to facilitate adjusting the inclination of the exterior wall panel 1 so that the exterior wall panel 1 remains in a horizontal state.

[0118] In one embodiment, the horizontality of the exterior wall panel 1 fixed under the support frame 8 is adjusted by manually adjusting the ejection length of the jack 81. The bottom plate 721 of the jack 81 can be placed on the surface of the formwork platform 7 or directly on the ground. After the posture of the exterior wall panel 1 is corrected by the jack 81, the concrete in the casting area of ​​the interior wall panel is vibrated by a vibrating tool, and then the interior wall panel 2 is steam-cured. Before the concrete in the casting area of ​​the interior wall panel solidifies, the jack 81 always has a supporting effect on the exterior wall panel 1.

[0119] Preferably, step S2 further comprises: laying an insulation board 6 on the outer wall panel casting area;

[0120] Step S5 also includes: before pouring concrete into the inner wall panel pouring area, laying the insulation board 6 into the inner wall panel pouring area. By laying the insulation board 6 into the pouring area, it is more helpful to separate the outer wall panel 1 and the inner wall panel 2 from the surface of the mold platform 7.

[0121] When the above-mentioned assembled double-skin wall and its production method are used, a first threaded sleeve 4 is provided between the outer wall panel 1 and / or the inner wall panel 2 of the provided assembled double-skin wall to facilitate the movement, transportation, support, adjustment, and installation and fixation of the assembled double-skin wall. At the same time, the first threaded sleeve 4 can be used in the production of the double-skin wall, which helps to support the steel cage 3 larger than the steel cage 3, flip the outer wall panel 1 and the steel cage 3, and dock the outer wall panel 1 with the inner wall panel 2. The support frame 8 is installed in the first threaded sleeve 4 of the outer wall panel 1 by means of screws, and the existing jack 81 structure can be used to adjust the position of the outer wall panel 1 and achieve precise docking and matching of the outer wall panel 1 and the inner wall panel 2.

[0122] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An assembled double-skin wall, comprising an outer wall panel, an inner wall panel and a steel cage connecting the outer wall panel and the inner wall panel, wherein a cavity is formed between the outer wall panel and the inner wall panel, characterized in that: The steel cage comprises an outer steel mesh embedded in the outer wall panel, an inner steel mesh embedded in the inner wall panel, and a plurality of web bars connecting the outer steel mesh and the inner steel mesh, wherein the outer steel mesh, the inner steel mesh and the web bars form a plurality of triangular frames, and first threaded sleeves penetrating the outer wall panel or the inner wall panel are welded on both sides of the steel cage, and at least four groups of the first threaded sleeves are embedded in the outer wall panel and the inner wall panel, and the first threaded sleeve is in a blocked state on one side close to the steel cage; The second threaded sleeve is welded around the steel cage; or the second threaded sleeve is welded on the upper and lower sides of the steel cage; or the second threaded sleeve is welded on the left and right sides of the steel cage; The second threaded sleeve is welded to the web reinforcement and is located in the cavity.

2. The assembled double-skin wall according to claim 1, characterized in that: The outer steel mesh includes a first upper-chord steel bar, a second lower-chord steel bar parallel to the first upper-chord steel bar, and a transverse steel bar connecting the first upper-chord steel bar and the second lower-chord steel bar; the inner steel mesh includes a first lower-chord steel bar, a second upper-chord steel bar parallel to the first lower-chord steel bar, and a transverse steel bar connecting the first lower-chord steel bar and the second upper-chord steel bar; two first lower-chord steel bars are connected to the same first upper-chord steel bar through a web bar to form a first steel bar truss; two second lower-chord steel bars are connected to the same second upper-chord steel bar through a web bar to form a second steel bar truss; and along the extension direction of the transverse steel bars, the first steel bar truss and the second steel bar truss are alternately distributed.

3. The assembled double-skin wall according to claim 1, characterized in that: The outer side of the exterior wall panel and / or the inner side of the interior wall panel are both covered with a heat preservation board, and the heat preservation board has an affinity base surface that is affinity with concrete.

4. A method for producing an assembled double-skin wall, applied to the assembled double-skin wall according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step S1, preparing a steel cage, welding the web steel bars between the outer steel mesh and the inner steel mesh to form a steel cage, and welding the first threaded sleeve to the outer steel mesh and the inner steel mesh; In step S1, the first upper chord steel bar and the second lower chord steel bar are both laid perpendicularly to the transverse steel bar to above the transverse steel bar, and tied with wire to form an outer steel mesh, and the first lower chord steel bar and the second upper chord steel bar are both laid perpendicularly to the transverse steel bar, and tied with wire to form an inner steel mesh; The web bars are welded between the first upper chord steel bars and the first lower chord steel bars and between the second upper chord steel bars and the second lower chord steel bars, and the first steel bar trusses and the second steel bar trusses are staggered. Welding and fixing the second threaded sleeve to the web reinforcement; Step S2, assembling the exterior wall panel mold, installing two wide side baffles and two long side baffles on the mold platform to enclose and form a concrete exterior wall panel casting area; Step S3, placing the steel cage, using a crane to hoist the steel cage to the outer wall panel casting area, and making the first threaded sleeve fixed to the outer steel mesh abut against the surface of the formwork platform; Step S4, preparing the exterior wall panels, pouring concrete into the exterior wall panel pouring area and vibrating it, and steaming and curing it after the vibration is completed to form the exterior wall panels; Step S5: prefabricate the inner wall panels, install two wide side baffles and two long side baffles on the new formwork platform to form a concrete inner wall panel casting area, and pour concrete into the inner wall panel casting area; Step S6, docking the exterior wall panel with the interior wall panel, lifting the exterior wall panel out of the exterior wall panel casting area, turning over the exterior wall panel, and moving the exterior wall panel to just above the interior wall panel, installing the support frame to the first threaded sleeve of the exterior wall panel, and adjusting the postures of the jacks on both sides of the support frame to realize position calibration of the exterior wall panel; Step S7, preparing the inner wall panels, vibrating the concrete in the casting area of ​​the inner wall panels, and steaming and curing the concrete after the vibration is completed to form a double-skin wall.

5. The method for producing a prefabricated double-skin wall according to claim 4, characterized in that: In step S2 and / or step S5, firstly, a long side baffle is fixedly mounted on the die table by using a fixing block, then two wide side baffles are pressed against the fixed long side baffles and moved to a set position, and finally another long side baffle is pushed toward the fixed long side baffle to squeeze and fix the two wide side baffles between the two long side baffles, and the two wide side baffles and one long side baffle are fixed by using a fixing block; The wide side baffle and the long side baffle both include a bottom plate, a top plate, and a side plate connecting the bottom plate and the top plate. Along the extension direction of the bottom plate, a plurality of supporting ribs are evenly fixed between the bottom plate, the side plate, and the top plate.

6. The method for producing an assembled double-skin wall according to claim 4, characterized in that: The step S6 further includes: Step S6.1, using a crane to flip the exterior wall panel, screwing the screw at the end of the main rope of the crane to the first threaded sleeve on the inner steel mesh, and the crane to lift the exterior wall panel out of the exterior wall panel casting area; Step S6.2, screwing the screw at the end of the auxiliary rope of the overhead crane to the second threaded sleeve, and the overhead crane releases the main rope, so that the exterior wall panel and the steel cage are transformed from a horizontal state to a vertical state; Step S6.3, remove the screw at the end of the main rope of the overhead crane from the first threaded sleeve on the inner steel mesh, and install the screw at the end of the main rope of the overhead crane to the first threaded sleeve on the outer wall panel, tighten the main rope of the overhead crane to flip the outer wall panel and the steel cage from a vertical state to a horizontal state, and the outer wall panel is located above the steel cage, and remove the screw on the second threaded sleeve; Step S6.4, the crane moves the outer wall panel and the steel cage to just above the inner wall panel casting area, releases the main rope to initially connect the outer wall panel with the inner wall panel, and removes the screw on the first threaded sleeve.

7. The method for producing a prefabricated double-skin wall according to claim 4, characterized in that: The step S6 further includes: Step S6.5, fixing the support frame to the first threaded sleeve on the exterior wall panel by means of fixing bolts; Step S6.6, installing jacks on both sides of the support frame, and lifting the support frame by the jacks so that the outer wall panel and the inner wall panel are flush with each other, so as to achieve precise docking of the outer wall panel and the inner wall panel; Spherical concave surfaces are arranged at both ends of the support frame, and a supporting ball matched with the spherical concave surfaces is fixed on the top of the jack.

8. The method for producing a prefabricated double-skin wall according to claim 4, characterized in that: The step S2 further includes: laying an insulation board on the outer wall panel casting area; The step S5 further includes: before pouring concrete into the inner wall panel pouring area, laying an insulation board into the inner wall panel pouring area.

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