Integral erecting structure and erecting method of free-supporting end support laminated slab

Abstract

The application discloses a kind of whole support structures and support methods of support-free laminated board end support, it is provided with roof beam support piece in cooperation with prefabricated wall, lifting support assembly is arranged on the upper portion of roof beam support piece, and roof beam clamping is realized by lifting support assembly;The upper end of obliquely arranged support rod is fixed with wall body or roof beam support piece, and the lower end of obliquely arranged support rod is fixed with ground;The application also includes the vertical rod on cast-in-place concrete wall;When the vertical rod is external rod, a plurality of transverse reinforcing rods are connected and arranged between a plurality of vertical rods;A plurality of wall-penetrating reinforcing bar assemblies are fixed on the external rod, and roof beam clamping is realized on the external rod by lifting support assembly;A plurality of obliquely arranged reinforcing rods are arranged between the external rod and ground;When the vertical rod is vertical keel, roof beam support piece is arranged in cooperation with vertical keel, the fixation of lifting support assembly is realized by roof beam support piece, and a plurality of obliquely arranged reinforcing rods are arranged between vertical keel and ground.

Description

Technical Field

[0001] This invention relates to the field of formwork support technology in building construction, specifically to an integral support structure and method for end support of a supportless composite slab, applicable to the coordinated construction of composite slabs with walls and beams in prefabricated concrete structures. Background Technology

[0002] As is known in the construction industry, composite slabs are widely used as prefabricated components in prefabricated building construction, significantly improving construction efficiency.

[0003] Current composite slab support-free technology offers solutions such as integrated beam-slab construction and large-span integral load-bearing, moving beyond the limitations of independent support designs for single walls or beams. These prefabricated buildings, based on their structural systems, primarily include frame structures, frame-shear wall structures, and novel prefabricated steel-joint hybrid frame structures.

[0004] However, in current composite slab construction, traditional support systems are still widely used for vertical support erection, which presents numerous problems. When using traditional support methods such as coupler-type steel pipe scaffolding, a large number of longitudinal and transverse supports need to be installed under the composite slab to bear the construction load, and the following pain points exist:

[0005] 1. Industrialized composite slab products still use the traditional cast-in-place floor slab full-span support system during the construction of the composite layer, resulting in a generational gap in construction technology and failing to fully leverage the advantages of modern production.

[0006] 2. The longitudinal and transverse support system requires a large amount of steel pipes, fasteners, and other materials. The erection and dismantling of the system consume a lot of manpower, increasing construction costs.

[0007] 3. The support system is complex to set up, with complicated procedures, which prolongs the construction period. Furthermore, the support needs to be cleaned up again after it is removed, which affects the connection of subsequent procedures.

[0008] 4. The lack of coordinated design between the support spacing and the arrangement of the composite slabs leads to material waste or insufficient support.

[0009] Given the aforementioned technical issues, as professionals in the construction field, it is necessary to design a support-free composite slab. This type of composite slab employs a special structural design to improve its overall vertical stiffness and eliminate the need for most of the mid-span support structures. For example, an assembled truss composite slab and its construction method can eliminate the need for vertical support structures within a certain span. However, in terms of support for precast shear walls, the support length is only less than the protective layer, generally not exceeding 20mm. Therefore, it is necessary to consider utilizing the diagonal supports of precast shear walls or the formwork support systems of cast-in-place concrete walls and beams to increase the end support length or support method of the support-free composite slab, thereby improving the structural stability during construction and preventing construction collapse accidents. Thus, while ensuring production safety, by eliminating a large number of longitudinal and transverse support components located beneath the composite slab, the support structure is simplified, and construction costs are reduced. Summary of the Invention

[0010] To overcome the shortcomings of existing technologies, this invention provides an integral support structure and method for end support of a precast composite slab without the need for support. The core requirement is that the precast composite slab has a certain vertical stiffness, allowing for the elimination of support at the mid-span. Instead, multiple support components are used at the ends of the precast composite slab to work together, achieving coordinated support between the formwork support of precast walls and cast-in-place concrete walls and the end support of the precast composite slab. This solves the problem of unreliable 20mm support at the ends of the precast composite slab while ensuring construction safety and stability. It eliminates the need for intermediate support through reliable technical means, improves the compatibility between components, and meets various construction needs.

[0011] To achieve the above technical objectives, the present invention adopts the following solution: an integral support structure for a supportless composite slab, which includes inclined support rods and top beam support members applied to the precast wall; it also includes vertical rods applied outside the formwork system of cast-in-place concrete walls;

[0012] A top beam support is provided to complement the precast wall, and a support cylinder is provided at the top of the top beam support. A lifting support assembly is provided on the upper part of the support cylinder. The lifting support assembly includes a vertical screw and an adjusting nut. A U-shaped seat is provided at the top of the vertical screw. Two pressure plates are provided in the U-shaped seat. Each pressure plate is provided with an adjusting screw. The adjusting screw passes through a positioning nut on the side plate of the U-shaped seat. The upper end of the inclined support rod is fixed to the wall or to the top beam support, and the lower end of the inclined support rod is fixed to the ground.

[0013] When the vertical keel of the cast-in-place concrete wall formwork system is made of a low-strength material, the vertical rod is an external rod, and several horizontal reinforcing rods are connected between several external rods; several through-wall tie rod assemblies are fixed on the external rods, the top of the external rod is cylindrical, and a lifting support assembly is inserted inside; several inclined reinforcing rods are set between the external rods and the ground.

[0014] When the vertical keel of the cast-in-place concrete wall formwork system is made of a high-strength material, the vertical rod may be a vertical keel, and a top beam support is provided in conjunction with the vertical keel. The lifting support component is fixed through the top beam support. Several inclined reinforcing rods are provided between the vertical keel and the ground.

[0015] The top beam support is a corbel support assembly I, which includes a back plate and a top plate with a right-angle structure, and a reinforcing plate is provided between the back plate and the top plate; the support cylinder is provided on the top plate.

[0016] The top beam support is a corbel support assembly II, which includes a covering area and a top plate with a right-angle structure, and a reinforcing plate is provided between the covering area and the top plate; the covering area has a U-shaped structure, and its side has a through hole for locking with the vertical keel; the top plate has a U-shaped groove, which is correspondingly provided with the covering area to jointly cover the vertical keel, and the support cylinder is provided on the top plate.

[0017] The top beam support includes a wall support cylinder with an end cap and a tie rod extending through the end cap; a support cylinder is provided on the top surface of the wall support cylinder; and a bottom hinge seat is provided on the bottom surface of the wall support cylinder to fix the inclined support rod.

[0018] The inclined support rod includes a long inclined rod and a short inclined rod, which are used for lateral support of the precast wall at different heights.

[0019] The through-wall tie rod assembly includes a tie rod with threads at both ends and a positioning element on the threads. A locking nut is provided on the side of the positioning element, and a tightening element is provided on the outside of the locking nut. The tightening element includes at least two tightening semicircular rings, which are locked together by bolts.

[0020] When the vertical rod is an external rod and a T-channel steel is used to fix the template, a quick-release fastening component is provided in conjunction with the external rod. The quick-release fastening component includes a threaded rod, one end of which is fixed with a pull plate, and the pull plate is provided with a vertical rod fixing groove; the other end of the threaded rod is provided with an inner limiting plate and an outer limiting plate and a fastening nut. The outer limiting plate and the inner limiting plate are parallel and spaced apart, and the spacing is greater than the wall thickness of the T-channel steel.

[0021] The support method for the integral support structure of the unsupported composite slab is as follows:

[0022] For the installation of end supports for precast walls:

[0023] An inclined support rod is fixed to the precast wall surface through pre-set bolt holes; a top beam support is fixed to the precast wall surface.

[0024] When the precast wall is an exterior wall, the top beam support adopts the corbel support assembly I. The corbel support assembly I includes a back plate and a top plate with a right-angle structure, and a reinforcing plate is set between the back plate and the top plate. A support cylinder is set on the top plate. After the back plate of the corbel support assembly I is locked to the wall surface through the preset bolt holes, the support cylinder is set facing upward and inserted into the lifting support assembly. The two adjusting screws in the U-shaped seat are adjusted to push the two pressure plates to move relative to each other to clamp the top beam.

[0025] When the precast wall is an interior wall, the top beam support is a wall support cylinder with tie rods inside; a support cylinder is installed on the top surface of the wall support cylinder; a bottom hinge seat is installed on the bottom surface of the wall support cylinder to fix the inclined support rod; wall support cylinders are installed on the inner and outer sides of the precast wall, and the tie rods lock the two wall support cylinders through preset bolt holes; lifting support components are inserted into the support cylinders on the top surface of the wall support cylinders on the inner and outer sides of the precast wall, and the two adjusting screws in the U-shaped seat are adjusted to push the two pressure plates to move relative to each other to clamp the top beam;

[0026] For the installation of end supports in cast-in-place concrete wall formwork systems:

[0027] Formwork is installed on both sides of the cast-in-place concrete wall. Vertical joists and outer locking rods are then installed and fixed in conjunction with the formwork.

[0028] When the vertical keel is made of a low-strength material, the vertical rod is an external rod. Several through-wall tie rod assemblies are evenly distributed and installed through the template, vertical keel, and outer locking rod. The through-wall tie rod assembly includes a tie rod, which is equipped with a positioning piece and locked to the outer locking rod. The external rod is locked by a fastening piece on the outside of the locking nut. Adjacent external rods are locked together by a transverse reinforcing rod. The external rod is reinforced to the ground by an inclined reinforcing rod. A lifting support assembly is inserted into the top of the external rod. By adjusting the two adjusting screws in the U-shaped seat, the two pressure plates are pushed to move relative to each other to clamp the top beam.

[0029] When the vertical keel is made of a high-strength material, the vertical rod is the vertical keel, and several tie rods are evenly distributed through the template, the vertical keel and the outer locking rod. The corbel support assembly II is fixed on the vertical keel. The corbel support assembly II includes a covering area and a top plate with a right-angle structure. A reinforcing plate is set between the covering area and the top plate. The covering area covers the vertical keel and is locked by a through hole on the side. A lifting support assembly is inserted into the support cylinder on the top plate. By adjusting the two adjusting screws in the U-shaped seat, the two pressure plates are pushed to move relative to each other to clamp the top beam. The vertical keel is reinforced with an inclined reinforcing rod between it and the ground.

[0030] As a further extension of the support system for cast-in-place concrete walls, when supporting structures at internal corners:

[0031] The vertical rod is an external rod and uses T-channel steel to fix the template. A quick-release fastening device is installed in conjunction with the external rod. The quick-release fastening device includes a threaded rod, one end of which is fixed to a tension plate with a vertical rod fixing groove. The other end of the threaded rod has an inner limiting plate, an outer limiting plate, and a tightening nut, with the outer and inner limiting plates spaced apart. The T-channel steel on one side of the inside corner is horizontally inserted into the outer limiting plate, and then the quick-release fastening device is rotated 90 degrees to place the vertical rod in the vertical rod fixing groove. The tightening nut is then tightened to achieve horizontal tension. Similarly, the outer limiting plate is horizontally inserted into the T-channel steel on the other side of the inside corner, and the quick-release fastening device is rotated 90 degrees to place the vertical rod in the vertical rod fixing groove. The tightening nut is then tightened to achieve horizontal tension. The bidirectional tensioning of the vertical rod enables the formwork support of the cast-in-place concrete wall at the inside corner.

[0032] The beneficial effects of this invention are as follows: This invention is equipped with a top beam support component in conjunction with a precast wall. A lifting support assembly is provided on the upper part of the top beam support component, and the top beam is clamped through the lifting support assembly. The upper end of the inclined support rod is fixed to the wall or to the top beam support component, and the lower end of the inclined support rod is fixed to the ground. This invention also includes the application of vertical rods on a cast-in-place concrete wall. When the vertical rod is an external rod, several horizontal reinforcing rods are connected between several vertical rods. Several through-wall tie rods are fixed on the external rods, and the top beam is clamped through the lifting support assembly on the external rods. Several inclined reinforcing rods are provided between the external rods and the ground. When the vertical rod is a vertical keel, a top beam support component is provided in conjunction with the vertical keel, and the lifting support assembly is fixed through the top beam support component. Several inclined reinforcing rods are provided between the vertical keel and the ground.

[0033] Compared with existing technologies, the above-mentioned support structure has the following advantages:

[0034] 1. Eliminate intermediate supports and reduce costs: By supporting the ends of the composite slab with top beam supports or adjacent uprights, intermediate longitudinal and transverse supports are completely eliminated, reducing the consumption of materials such as steel pipes and fasteners, and lowering the cost of labor for erection and dismantling. Material savings can reach 30% to 50%.

[0035] 2. Convenient assembly and disassembly, improving efficiency: The top beam support and vertical keel are connected by bolts for easy disassembly, and adjacent uprights are fixed by mechanical connections, resulting in fast installation and disassembly and shortening the construction cycle by 20% to 30%;

[0036] 3. High adaptability and versatility: The adjacent uprights are adjustable to accommodate different floor heights from 2.8m to 3.5m. It is applicable to both steel and non-steel vertical keel wall formwork and can cover most civil building construction scenarios.

[0037] 4. Stable structure and guaranteed quality: The symmetrically arranged diagonal supports are reliably fixed to the floor, effectively resisting the lateral forces during concrete pouring. Tests have verified that the maximum deformation of the support system is ≤3mm, meeting the requirements for construction safety and quality. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the support structure of the present invention on the exterior wall of a precast wall;

[0039] Figure 2 This is a schematic diagram of the support structure of the present invention on the inner wall of a precast wall;

[0040] Figure 3 This is a schematic diagram of the support structure of the present invention on a cast-in-place concrete wall. Figure I ;

[0041] Figure 4 This is a schematic diagram of the support structure of the present invention on a cast-in-place concrete wall. Figure II ;

[0042] Figure 5 This is a schematic diagram of the support structure of the present invention on a cast-in-place concrete wall. Figure III (Corner area);

[0043] Figure 6 for Figure 1 Enlarged schematic diagram of the structure of region A in the middle;

[0044] Figure 7 for Figure 5 Enlarged schematic diagram of the structure of region B in the middle;

[0045] Figure 8 This is a schematic diagram of the through-wall tie rod assembly structure;

[0046] Figure 9 This is a schematic diagram of the lifting support assembly structure;

[0047] Figure 10 This is a schematic diagram of the quick-release fastener structure;

[0048] Figure 11 This is a schematic diagram of the structure of the corbel support component I;

[0049] Figure 12 This is a schematic diagram of a diagonally placed reinforcing bar structure.

[0050] Figure 13 A structural diagram for use with a wall support tube;

[0051] Figure 14 Schematic diagram of the structure used for the bracket support assembly II;

[0052] Figure 15 This is a schematic diagram of the structure used for the external rod;

[0053] 10. Exterior wall, 11. Interior wall, 12. Insulation board, 13. Top beam, 14. Pouring area, 15. Formwork, 16. Vertical keel, 17. T-channel steel, 18. Double steel pipe;

[0054] 2. Through-wall tie rod assembly, 20. Tie rod, 21. Positioning hook, 22. Locking nut, 23. Tensioning sleeve, 231. Tensioning semi-circular ring I, 232. Tensioning semi-circular ring II, 233. Bolt;

[0055] 3. Lifting support assembly; 30. Vertical screw; 31. Adjusting nut; 311. Force application protrusion; 32. U-shaped seat; 33. Side plate; 34. Adjusting screw; 35. Pressure plate; 36. Positioning nut; 37. Force application handle.

[0056] 40. Bracket support assembly I; 41. Bracket support assembly II; 42. Back plate; 43. Covering area; 44. Top plate; 45. Reinforcing plate; 46. Support cylinder; 47. U-shaped channel.

[0057] 5. Angled reinforcing rod; 51. End seat; 52. Hinge seat; 53. Fixing screw; 54. Tensioning ring; 55. Hinge shaft; 56. Keel fixing groove; 57. External rod fixing ring.

[0058] 6. Wall support tube; 61. End cap; 62. Tie rod hole; 63. Bottom hinge seat; 64. Tie rod.

[0059] 7. Long diagonal bar; 71. Short diagonal bar;

[0060] 8. External rod; 81. Buckle; 82. Lateral reinforcement rod;

[0061] 9. Quick-release fastener; 90. Threaded rod; 91. Pull plate; 92. Fastening nut; 93. Inner limiting plate; 94. Outer limiting plate; 95. Vertical rod fixing groove. Detailed Implementation

[0062] Example 1: An integral support structure and support method for the end support of a supportless composite slab, which includes inclined support rods and top beam support members applied to the precast wall, and also includes vertical rods applied to the cast-in-place concrete wall.

[0063] The aforementioned precast walls typically include an exterior wall 1 and an interior wall 10.

[0064] When applied to exterior wall 1, a top beam support is provided on the inner side of exterior wall 1. The top beam support is a corbel support assembly I4, such as... Figure 11 As shown, it includes a back plate 41 and a top plate 43 with a right-angle integral structure, and a reinforcing plate 44 is provided between the back plate 41 and the top plate 43; a support cylinder 45 is provided on the top plate 43, and a lifting support assembly 3 is provided on the upper part of the support cylinder 45, such as... Figure 9 As shown, the lifting support assembly 3 includes a vertical screw 30 and an adjusting nut 31, which is a square-edged screw for applying force. The adjusting nut 31 is provided with a force-applying protrusion 311 on its side for external personnel to apply force. A U-shaped seat 32 is provided at the top of the vertical screw 30. Two pressure plates 35 are arranged opposite each other in the U-shaped seat 32. Each pressure plate 35 is provided with an adjusting screw 34, which passes through the side plate 33 of the U-shaped seat and the positioning nut 36. The top beam 12 is clamped and supported by the two pressure plates 35 in the U-shaped seat 32.

[0065] When applied to interior wall 10, top beam support members are provided on both the inner and outer sides of interior wall 10, such as... Figure 13 As shown, the top beam support includes a wall support cylinder 6, an end cap 61 is provided on the wall support cylinder 6, a tie rod hole 62 is provided through the end cap 61, and a tie rod 64 passes through the inner and outer sides of the wall support cylinder 6 to achieve locking and fixing with the inner wall 10; a support cylinder 45 is provided on the top surface of the wall support cylinder 6 and is inserted and fixed to the lifting support assembly 3; a bottom hinge seat 63 is provided on the bottom surface of the wall support cylinder 6, and the inclined support rod is fixed through the bottom hinge seat 63.

[0066] When the vertical joists of the cast-in-place concrete wall formwork system are made of low-strength materials, such as wooden joists or composite material joists, then the vertical rods are independently installed external rods 8, such as... Figure 15 As shown, several transverse reinforcing rods 82 are connected between several external rods 8 by buckles 81; several through-wall tie rod assemblies 2 are fixed on the external rods 8, the top of the external rods 8 is cylindrical, and a lifting support assembly 3 is inserted inside, which supports the top beam 12; several inclined reinforcing rods 5 are set between the external rods 8 and the ground, and when the inclined reinforcing rods 5 are fixed to the external rods 8, they are connected by a swing connector formed by a tightening ring 54 and an external rod fixing ring 57; the bottom surface of the inclined reinforcing rods 5 is provided with an end seat 51 to be fixed to the ground. Figure 8 As shown, the above-mentioned through-wall tie rod assembly 2 includes a tie rod 20. Both ends of the tie rod 20 are threaded and a positioning element is provided on the thread. In this embodiment, the positioning element is a positioning hook 21, which is used to fix the double steel pipe 17 on the outside of the vertical keel 15. The side of the positioning hook 21 is equipped with a locking nut 22. The outside of the locking nut 22 is also equipped with a tightening sleeve 23 as a tightening element and fixed to the external rod 8. The tightening sleeve 23 includes a tightening semi-circular ring I 231 and a tightening semi-circular ring II 232. The two tightening semi-circular rings are locked by bolts 233. The above through-wall tie rod assembly 2 connects the external rod 8 to the wall to be poured into one piece. The top of the external rod 8 is connected to the lifting support assembly 3 that supports the composite plate into one piece.

[0067] When the vertical joists of the cast-in-place concrete wall formwork system are made of high-strength materials, such as steel joists, the vertical rod is called vertical joist 15. A top beam support is provided in conjunction with the vertical joist 15. The top beam support uses a corbel support assembly II 40, such as... Figure 14 As shown, it includes a covering area 42 and a top plate 43 with a right-angle structure, and a reinforcing plate 44 is provided between the covering area 42 and the top plate 43; the covering area 42 has a U-shaped structure and a through hole on its side for locking with the vertical keel 15; the top plate 43 has a U-shaped groove 46, which is correspondingly provided with the covering area 42 to jointly cover the vertical keel 15; the support cylinder 45 is provided on the top plate 43, and a lifting support assembly 3 is inserted inside it to support the top beam 12.

[0068] The lifting support assembly is fixed by the top beam support, and several inclined reinforcing bars are set between the vertical keel 15 and the ground.

[0069] As a further technical extension, the present invention also discloses a support structure for cast-in-place concrete walls at internal corners, such as... Figure 5 , 7 As shown, when the vertical rod is an external rod 8 and the formwork is fixed with T-channel steel 16, a quick-release fastening component 9 is provided in conjunction with the external rod 8. The quick-release fastening component 9 includes a threaded rod 90, one end of which is fixed with a tension plate 91. The tension plate 91 is provided with a vertical rod fixing groove 95. The other end of the threaded rod 90 is provided with an inner limiting plate 93, an outer limiting plate 94, and a tightening nut 92. The outer limiting plate 94 and the inner limiting plate 93 are parallel and spaced apart, with the spacing greater than the wall thickness of the T-channel steel. At the inside corner of the cast-in-place concrete wall formwork system, every two quick-release fastening components 9 form a group, which are respectively connected to the walls on both sides and fixed to the external rod 8 simultaneously through two quick-release fastening components 9. Multiple groups of quick-release fastening components 9 are arranged vertically in parallel and connected to the external rod 8 to achieve the support of the overall structure.

[0070] Example 2: A method for supporting the end of a precast composite slab without support. Based on the components of Example 1, this invention discloses the following specific method embodiments. It should be understood that "supportless" in the title refers to eliminating the need for a support member at the mid-span directly below the composite slab. Instead, it mainly achieves coordinated support at the end of the composite slab by using multiple support components working together. This allows for the coordinated support of formwork for precast walls and cast-in-place concrete walls with the end support of the composite slab. The specific steps include the following:

[0071] I. Support for the ends of precast walls:

[0072] The overlap between the end of the composite slab and the top surface of the precast wall is no more than 20 mm and does not exceed the thickness of the steel reinforcement protective layer. Therefore, after removing the supporting components in the mid-span area, in order to maintain the stability and safety of the composite slab, supporting components need to be installed on the precast wall to support the composite slab. The supporting components mentioned here are the top beam supporting components.

[0073] Fix the inclined support rods to the side of the precast wall and lock them to the ground via end seats 51; fix the top beam support to the wall surface of the precast wall;

[0074] More specifically, when fixing the precast wall, the different support conditions of the inner and outer walls need to be considered. When the precast wall is the outer wall 1, the outer side of the outer wall 1 is the insulation board 11, and only the indoor side needs to be supported by the formwork.

[0075] like Figure 1 As shown, the top beam support uses a corbel support assembly I4, which is locked to the wall via a back plate 41. A lifting support assembly 3 is inserted into a support cylinder 45 on the top plate 43. By tightening the adjusting nut 31 on the lifting support assembly 3, the support height of the vertical screw 30 is adjusted vertically. A U-shaped seat 32 is provided at the top of the vertical screw 30. Inside the U-shaped seat 32, two pressure plates 35 are arranged opposite each other, along with an adjusting screw 34 and a positioning nut 36. The top beam 12 is clamped and supported by adjusting the two pressure plates 35 inside the U-shaped seat 32. The top beam 12 is used to support the composite slab.

[0076] When the precast wall is an interior wall 1, such as Figure 2 As shown, the top beam support uses wall support cylinders 6. Wall support cylinders 6 are respectively installed on the inner and outer sides of the precast wall. Tie rods 64 pass through the two wall support cylinders 6 and lock them, fixing the two wall support cylinders 6 to the wall as a whole. Lifting support components 3 are inserted into the support cylinders on the top surface of the wall support cylinders 6 on the inner and outer sides of the precast wall. The adjusting nut 31 on the lifting support component 3 is screwed to adjust the support height of the vertical screw 30 vertically. A U-shaped seat 32 is provided at the top of the vertical screw 30. Two front and rear pressure plates 35, an adjusting screw 34, and a positioning nut 36 are arranged opposite each other in the U-shaped seat 32. The top beam 12 is clamped and supported by adjusting the two pressure plates 35 in the U-shaped seat 32.

[0077] When the aforementioned inclined support rods are applied to the exterior wall 1 or the interior wall 10, each inclined support rod includes a long inclined rod 7 and a short inclined rod 71, which are used for high-low positioning support of the precast wall. Each of the long inclined rod 7 and the short inclined rod 71 has an end seat 51, on which a hinge seat 52 and a fixing screw 53 are provided. The hinge seat 52 is used to hinge with the long inclined rod 7 or the short inclined rod 71, and the fixing screw 53 is used to fix it to the ground or the wall.

[0078] II. For the construction of additional end supports in cast-in-place concrete wall formwork systems:

[0079] Templates 14 are installed on both sides of the cast-in-place concrete wall. Vertical joists 15 and outer locking rods are then installed and fixed in conjunction with the templates 14. In actual implementation cases, the vertical joists 15 can be made of various materials, such as wooden joists, steel joists, and composite material joists. The strength of these joists varies. In view of the different strengths of these vertical joists, this technical solution also makes the following technical distinctions:

[0080] When the vertical joists of the cast-in-place concrete wall formwork system are made of low-strength materials, such as wood, then, if Figure 3 As shown, the vertical rod is an external rod 8. Several through-wall tie rod assemblies 2 are evenly distributed through the template 14, vertical keel 15 and outer locking rod. The outer locking rod here uses double steel pipes 17. Two sets of positioning hooks 21 are set on the tie rod of the through-wall tie rod assembly 2 and locked with the double steel pipes 17. The side of the positioning hook 21 is equipped with a locking nut 22. The outside of the locking nut 22 is also equipped with a tightening sleeve 23 as a tightening part and fixed to the external rod 8. The tightening sleeve 23 includes a tightening semi-circular ring I 231 and a tightening semi-circular ring II 232. The two tightening semi-circular rings are locked by bolts 233. The external rod 8 is connected to the wall to be poured by the through-wall tie rod assembly 2.

[0081] Adjacent external rods 8 are locked to the transverse reinforcing rod 82 via buckles 81; the external rods 8 are reinforced to the ground by inclined reinforcing rods 5, the bottom of which is locked to the ground via end seats 51. The inclined reinforcing rods 5 are fixed to the external rods 8 via tightening rings 54 and external rod fixing rings 57, and the support angle is adjusted; a lifting support assembly 3 is inserted into the top of the external rods 8, and the adjusting nut 31 on the lifting support assembly 3 is screwed to adjust the support height of the vertical screw 30 vertically; a U-shaped seat 32 is provided at the top of the vertical screw 30, and two pressure plates 35, an adjusting screw 34, and a positioning nut 36 are arranged opposite each other inside the U-shaped seat 32; the top beam 12 is clamped and supported by adjusting the two pressure plates 35 inside the U-shaped seat 32. The top of the external rods 8 supports the top beam 12 via the lifting support assembly 3, thereby supporting the composite plate.

[0082] like Figure 4 , 14As shown, when the vertical keel of the cast-in-place concrete wall formwork system is made of a high-strength material, such as steel keel, the vertical rod is replaced by vertical keel 15. Several tie rods 64 are evenly distributed through the formwork 14, vertical keel 15 and outer locking rod. The outer locking rod here uses double steel pipes 17. The corbel support component II4 is fixed on the vertical keel 15, and the covering area of ​​the corbel support component II4 is locked to the vertical keel 15. The lifting support component 3 is inserted into the support cylinder 45 on the top plate 43. The adjusting nut 31 on the lifting support component 3 is screwed to adjust the support height of the vertical screw 30. A U-shaped seat 32 is set at the top of the vertical screw 30. Two front and rear pressure plates 35, an adjusting screw 34 and a positioning nut 36 are arranged opposite each other in the U-shaped seat 32. The top beam 12 is clamped and supported by adjusting the two pressure plates 35 in the U-shaped seat 32.

[0083] The vertical keel 15 is fixed with a tension ring 54, a hinge shaft 55, and a keel fixing groove 56. The inclined reinforcing rod 5 is fixed and its support angle is adjusted through the above components. The bottom of the inclined reinforcing rod 5 is locked to the ground through the end seat 51.

[0084] Example 3: As a further extension of the support for cast-in-place concrete walls, when supporting the walls at internal corners, such as... Figure 5 As shown, the vertical rod is an external rod 8, and a T-shaped channel steel 16 is used to fix the template 14. A quick-release fastening component 9 is set in conjunction with the external rod 8. The quick-release fastening component 9 includes a threaded rod 90, one end of which is fixed to a tension plate 91. The tension plate 91 is provided with a vertical rod fixing groove 95. The other end of the threaded rod 90 is provided with an inner limiting plate 93, an outer limiting plate 94, and a fastening nut 92. The outer limiting plate 94 and the inner limiting plate 93 are spaced apart. The T-shaped channel steel 16 on one side of the cast-in-place concrete wall of the corner is horizontally inserted into the outer limiting plate 94. Then, the quick-release fastening component 9 is rotated 90 degrees to release the external rod. The rod 8 is placed in the vertical rod fixing groove 95, and the tightening nut 92 is tightened horizontally. The outer limiting plate 94 is horizontally inserted into the T-shaped channel steel 16 on the cast-in-place concrete wall on the other side of the inside corner. Then, the quick-release fastening piece 9 is rotated 90 degrees to place the external rod 8 in the vertical rod fixing groove 95, and the tightening nut 92 is tightened horizontally. Every two quick-release fastening pieces 9 form a group, which are respectively connected to the walls on both sides of the inside corner, and are fixed to the external rod 8 at the same time through two quick-release fastening pieces 9. Multiple groups of quick-release fastening pieces 9 are arranged vertically in parallel, and after being connected to the external rod 8, the formwork support of the cast-in-place concrete wall at the inside corner is realized.

Claims

1. A self-contained bracing structure for support of unsupported laminated slab end, CHARACTERIZED IN THAT: It includes the oblique support rod and the roof beam support applied to the prefabricated wall, and the vertical rod applied to the cast-in-place concrete wall; The roof beam support is a bracket support assembly I, which includes a back plate and a top plate arranged in a right angle structure, and a reinforcing plate arranged between the back plate and the top plate; a support cylinder is arranged on the top plate; a lifting support assembly is arranged on the upper part of the support cylinder, which includes a vertical screw rod and an adjusting nut, the top of the vertical screw rod is provided with a U-shaped seat, two front and rear pressing plates are arranged in the U-shaped seat, adjusting screws are arranged on the pressing plates, and the adjusting screws penetrate the positioning nuts on the side plates of the U-shaped seat; the upper end of the oblique support rod is fixed with the wall body or the roof beam support, and the lower end of the oblique support rod is fixed with the ground; When the prefabricated wall is an inner wall, the roof beam support includes a wall support cylinder, an end cover is arranged on the wall support cylinder, and a pull bar is arranged penetrating the end cover; a support cylinder is arranged on the top surface of the wall support cylinder; a bottom hinge seat is arranged on the bottom surface of the wall support cylinder to fix the oblique support rod. When the vertical rod is an external rod, a plurality of transverse reinforcing rods are arranged between a plurality of external rods; a plurality of wall penetrating pull rod assemblies are fixed on the external rods, the wall penetrating pull rod assembly includes a pull rod, the two ends of the pull rod are provided with threads, and positioning members are arranged on the threads; the side of the positioning member is provided with a locking nut in a matched mode; the outer side of the locking nut is further provided with a tightening member, the tightening member includes at least two tightening half rings, and the two tightening half rings are locked by bolts; The top of the external rod is in a cylindrical shape, and the lifting support assembly is inserted and fixed in the internal rod; a plurality of oblique reinforcing rods are arranged between the external rod and the ground; when the vertical rod is an external rod and a T-shaped channel steel is used to fix the formwork, a quick-release tightening member is arranged in a matched mode with the external rod, the quick-release tightening member includes a threaded rod, one end of the threaded rod is fixed with a pulling plate, and a vertical rod fixing groove is arranged on the pulling plate; the other end of the threaded rod is provided with an inner limiting plate and an outer limiting plate, and the outer limiting plate and the inner limiting plate are arranged in a spaced mode, and the spacing distance is greater than the wall thickness of the T-shaped channel steel.

2. The self-contained supported structure of claim 1, wherein: The oblique support rod includes a long oblique rod and a short oblique rod, which are used for high and low position support of the prefabricated wall.

3. The self-contained supported structure of supported-free laminated slab end support according to claim 2, characterized by: When the vertical rod is a vertical keel, a roof beam support is arranged in a matched mode with the vertical keel, the roof beam support is a bracket support assembly II, which includes a cladding area and a top plate arranged in a right angle structure, and a reinforcing plate arranged between the cladding area and the top plate; the cladding area is arranged in a U-shaped structure, and a through hole is arranged on the side of the cladding area for locking with the vertical keel; a U-shaped groove is arranged on the top plate, which is arranged in a corresponding mode with the cladding area to realize cladding of the vertical keel; the support cylinder is arranged on the top plate; the lifting support assembly is fixed through the roof beam support, and a plurality of oblique reinforcing rods are arranged between the vertical keel and the ground.

4. A support setting method for the end support of the support-free laminated slab, which uses the integrated support structure for the end support of the support-free laminated slab according to claim 3, characterized in that: I. The support setting for the end support of the prefabricated wall: The inclined support rod is fixed on the side of the prefabricated wall; and the top beam support member is fixed on the wall surface of the prefabricated wall; When the prefabricated wall is an outer wall, the top beam support member adopts a corbel support assembly I, which comprises a back plate and a top plate arranged in a right angle structure, and a reinforcing plate arranged between the back plate and the top plate; a support cylinder is arranged on the top plate; after the back plate of the corbel support assembly I is locked to the wall surface, the support cylinder is arranged upward and is inserted with a lifting support assembly; two adjusting screws in a U-shaped seat are adjusted, and two pressing plates are relatively moved to clamp the top beam; When the prefabricated wall is an inner wall, the top beam support member adopts a wall support cylinder, and a reinforcing bar is arranged in the wall support cylinder; a support cylinder is arranged on the top surface of the wall support cylinder; a bottom hinged seat is arranged on the bottom surface of the wall support cylinder to fix the inclined support rod; the wall support cylinders are correspondingly arranged on the inner and outer sides of the prefabricated wall, and the reinforcing bars are inserted through the two wall support cylinders and locked; the lifting support assemblies are respectively inserted into the support cylinders on the top surfaces of the wall support cylinders on the inner and outer sides of the prefabricated wall, and two adjusting screws in a U-shaped seat are respectively adjusted to relatively move two pressing plates to clamp the top beam; II. Increase end support for the formwork system of cast-in-place concrete wall: The formwork is arranged on both sides of the cast-in-place concrete wall, and vertical keels and outer locking rods are arranged to fix vertical rods after the formwork is arranged; When the vertical rod is an external rod, a plurality of wall-penetrating reinforcing bar assemblies are uniformly arranged through the formwork, the vertical keel and the outer locking rod, the wall-penetrating reinforcing bar assembly comprises a pull rod, the pull rod is provided with a positioning member and is locked with the outer locking rod, the external rod is locked by a tightening member arranged outside the locking nut, the adjacent external rods are locked by a transverse reinforcing rod, the external rod and the ground are reinforced by an inclined reinforcing rod, the lifting support assembly is inserted into the top of the external rod, two adjusting screws in a U-shaped seat are adjusted, and two pressing plates are relatively moved to clamp the top beam; When the vertical rod is a vertical keel, a plurality of reinforcing bars are uniformly arranged through the formwork, the vertical keel and the outer locking rod, a corbel support assembly II is fixed on the vertical keel, the corbel support assembly II comprises a cladding area and a top plate arranged in a right angle structure, and a reinforcing plate is arranged between the cladding area and the top plate; the cladding area clads the vertical keel and is locked by a through hole arranged on the side; the lifting support assembly is inserted into the support cylinder on the top plate, two adjusting screws in a U-shaped seat are adjusted, and two pressing plates are relatively moved to clamp the top beam; the vertical keel and the ground are reinforced by an inclined reinforcing rod.

5. A method of erecting unsupported laminated slab end supports according to claim 4 wherein: When the inner corner is supported, The vertical rod is an external rod and is fixed with a template by a T-shaped channel steel, and a quick-release fastening piece is arranged in cooperation with the external rod, the quick-release fastening piece comprising a threaded rod, one end of the threaded rod being fixed with a pulling plate, the pulling plate being provided with a vertical rod fixing groove; the other end of the threaded rod being provided with an inner limiting plate and an outer limiting plate and a fastening nut, the outer limiting plate and the inner limiting plate being arranged at intervals; the T-shaped channel steel in the cast-in-situ concrete wall on one side of the internal corner is horizontally inserted into the outer limiting plate, then the quick-release fastening piece is turned by 90 degrees to place the vertical rod in the vertical rod fixing groove, and the fastening nut is screwed to realize horizontal tensioning; the T-shaped channel steel in the cast-in-situ concrete wall on the other side of the internal corner is horizontally inserted into the outer limiting plate, then the quick-release fastening piece is turned by 90 degrees to place the vertical rod in the vertical rod fixing groove, and the fastening nut is screwed to realize horizontal tensioning.

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