A removable two-way rib formwork system

Abstract

A detachable bidirectional rib formwork system relates to the field of construction technology and includes a base formwork and formwork shells disposed on the base formwork. The formwork shells are arranged in an array and spaced apart. Folding edges are provided on both sides of the formwork shells and are fixed to the base formwork by means of the folding edges. Adaptive caulking plates are provided in the gaps between the folding edges of adjacent formwork shells. A support member with a groove-shaped structure is provided at the lower end of the base formwork. A first connecting member is provided at the intersection of four adjacent groups of formwork shells at the upper end of the base formwork. The first connecting member is a rectangular columnar structure and is provided with a first screw hole. The first connecting member is fixed by means of a bolt that passes through the base formwork from the lower end of the base formwork and extends into the first screw hole of the first connecting member. The present invention divides the base formwork into multiple base plates at the rib beam position, which facilitates transportation, significantly improves construction efficiency, saves a lot of manpower and material resources, avoids waste of resources and environmental pollution, and satisfies both economic and environmental requirements.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a detachable bidirectional rib formwork system. Background Art

[0002] Prefabricated buildings are a trend in the current construction industry. Support-free formwork has also been used, but it is generally a detachable steel truss floor deck, which is only used in ordinary floor slabs. The detachable formwork for T-shaped multi-ribbed floor slabs is still vacant. With the development of prefabricated buildings, T-shaped multi-ribbed floor slabs generally have the following problems:

[0003] The first is the detachable steel truss floor deck. The bottom formwork is equipped with triangular steel trusses. When it is used in a T-shaped multi-ribbed floor, the steel trusses conflict with the multi-ribbed beam reinforcement and formwork, seriously affecting the placement of the formwork and the binding of the rib beam reinforcement.

[0004] Secondly, the T-shaped multi-rib floor is still constructed in the traditional way, with on-site formwork setting, which is cumbersome and labor-intensive, resulting in waste of resources and environmental pollution, and consuming a lot of manpower and material resources, which is neither economical nor environmentally friendly. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a detachable two-way rib formwork system, which divides the bottom formwork into multiple bottom plates at the rib beam position, which is convenient for transportation. The integrity of the formwork is ensured by splicing during construction, and the construction efficiency can be significantly improved, which saves a lot of manpower and material resources, avoids waste of resources and environmental pollution, and meets both economic and environmental requirements.

[0006] The technical solution adopted by the present invention is to provide a detachable bidirectional rib formwork system, comprising a bottom formwork and a formwork shell arranged on the bottom formwork, the formwork shells are arranged in an array, and the formwork shells are provided with folded edges on both sides and fixed to the bottom formwork by means of the folded edges. The gaps between the folded edges on both sides of the adjacent formwork shells are provided with adapted caulking plates, and the caulking plates have the same thickness as the folded edges on both sides of the formwork shells.

[0007] A support member with a groove-shaped structure is provided at the lower end of the bottom template, and a first connecting member is provided at the intersection of the four adjacent groups of formwork at the upper end of the bottom template. The first connecting member is a rectangular columnar structure and is provided with a first screw hole. The first connecting member is fixed by means of a bolt passing through the bottom template from the lower end of the bottom template and extending into the first screw hole of the first connecting member.

[0008] Both ends of the support member in the length direction are provided with L-shaped folding edges, and adjacent support members are overlapped by means of the L-shaped folding edges.

[0009] The bottom template is formed by splicing a plurality of bottom plates in one direction, and one end of the support member extends out of one side of the bottom plate, and the other end is retracted into the other side of the bottom plate.

[0010] A second connecting piece is provided at the upper end of the adjacent base plate splicing position and is located at the intersection of the four adjacent groups of mold shells. The second connecting piece is a C-shaped structure with an opening facing upward and a flat bottom. Second screw holes are provided on the outer walls on both sides of the opening of the second connecting piece. The second connecting piece is fixed by means of bolts passing through the base plate from the lower end and extending into the second screw holes of the second connecting piece and is fixed at the same time as the adjacent base plate.

[0011] A blocking plate is further provided at the upper end of the joint position of adjacent bottom plates. The blocking plate is located between the second connecting members and blocks the joint seams of the adjacent bottom plates.

[0012] Square spiral stirrups are arranged between the formworks and stress-bearing bars in the same direction as the square spiral stirrups are arranged inside the square spiral stirrups. The square spiral stirrups are fixed by means of a first connector and / or a second connector.

[0013] A construction method based on a detachable two-way rib formwork system comprises the following steps:

[0014] a. Prefabrication

[0015] The required components are manufactured in the factory;

[0016] b. Assembly

[0017] First, fix the formwork on the bottom plate in an array-like interval, fix the caulking plate in the gap between the bottom folds of the formwork and reserve the position of the first connector, then fix the first connector at the intersection of the four adjacent groups of formwork, and the adjacent first connectors are staggered.

[0018] The transverse and longitudinal square spiral stirrups and stress-bearing bars are fixed to the bottom plate by means of the first connecting piece and are located between each set of adjacent formworks.

[0019] The support is fixed at the lower end of the base plate and opened downward. When fixed, the length direction of the support is consistent with the width direction of the base plate, and one end of the support extends out of the base plate and the other end is retracted into the base plate.

[0020] After assembly, transport to the construction site;

[0021] c. Splicing

[0022] At the construction site, the assembled base plates are hoisted to the corresponding positions. The base plates are overlapped on the supporting members extending from the lower ends of the adjacent base plates. The lower ends of the supporting members are supported by support columns. The base plates are spliced horizontally, and the outer side of the outermost base plate is fixed to the wall and / or beam by angle steel.

[0023] d. Laying steel bars

[0024] After the bottom plates are spliced, longitudinal square spiral stirrups and stress bars are laid between the upper formworks at the joints of adjacent bottom plates, and a concrete reinforcement skeleton is laid above the formworks;

[0025] e. Casting and demoulding

[0026] Pour concrete on the upper end of the bottom formwork, and remove the formwork after the concrete pouring is completed and the strength reaches the standard. The removed components include support columns, support members, bottom plate, formwork, caulking plates and sealing plates.

[0027] In the step d, the blocking plate is fixed to the upper end of the joint between the adjacent bottom plates. The thickness of the blocking plate is the same as the folded edge of the formwork, and a mounting position for the second connecting piece is reserved.

[0028] In step d, the second connecting piece is fixed at the intersection position of the four adjacent groups of mold shells. The second connecting piece needs to be fixed on the two adjacent base plates at the same time. The second connecting piece is a C-shaped structure with an open upper end and a flat lower end. The square spiral stirrups at the upper end of the base plate splicing position are fixed by the second connecting piece.

[0029] The beneficial effects of the present invention are:

[0030] 1. The entire formwork system is modularized and divided at the rib beam position. The base plate, formwork, first connecting piece, support, square spiral stirrups and tension bars are assembled in the factory and then transported to the construction site for direct splicing. This makes transportation more convenient, saves on-site operation steps, reduces operational difficulty, and greatly improves construction efficiency.

[0031] 2. Splice the assembled base plates at the construction site, set blocking plates at the splicing positions to seal the seams, and set second connectors at the splicing positions to fix the stirrups. After the entire base template is spliced, lay the steel frame to improve the integrity of the steel frame, reduce the number of connection nodes, and improve the strength of the two-way plate after pouring.

[0032] 3. When the base plate is spliced, it is positioned and overlapped through the support parts, which makes the splicing faster. The opening at the lower end of the support part can be used to position the support column, and the upper end of the support column is fixed in the opening of the support part. There is no need to measure and calculate the support position on site.

[0033] 4. Both the first connecting piece and the second connecting piece are fixed by bolts passing through the bottom template from the lower end. When removing the mold, the bolts can be pointed downwards, which improves the convenience of operation when removing the mold.

[0034] 5. The stirrups are laid between the formworks and positioned and fixed with the help of the first connector and the second connector, which reduces the difficulty of laying the steel bar frame and makes the laying method simpler and faster.

[0035] 6. The steel frame is not directly connected to the entire formwork system, making it more convenient to remove the formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention,

[0037] Figure 2 yes Figure 1 A magnified image of the middle

[0038] Figure 3 yes Figure 1 Enlarged view of B

[0039] Figure 4 This is a schematic diagram of the structure of the first connecting member

[0040] Figure 5 This is a schematic diagram of the structure of the second connecting piece

[0041] Figure 6 Schematic diagram of the support structure

[0042] Figure 7 Schematic diagram of the support column structure

[0043] Figure 8 is a reference diagram of the positions of the first connecting member and the second connecting member on the base plate;

[0044] Figure 9 It is a reference drawing of the concrete reinforcement skeleton after the base plate is spliced and laid;

[0045] In the accompanying drawings, 1. formwork, 2. caulking plate, 3. support member, 4. first connecting member, 5. L-shaped folding edge, 6. bottom plate, 7. second connecting member, 8. blocking plate, 9. square spiral stirrups, 10. stress reinforcement, 11. support column, 12. steel frame. DETAILED DESCRIPTION

[0046] like Figure 1-9 The present invention provides a detachable bidirectional rib formwork system, comprising a bottom formwork and a formwork 1 arranged on the bottom formwork, the formwork 1 being arranged in an array-like manner, and the formwork 1 having folded edges on both sides and being fixed to the bottom formwork by means of the folded edges, and the gaps between the folded edges on both sides of adjacent formwork 1 are provided with adaptive caulking plates 2, and the caulking plates 2 have the same thickness as the folded edges on both sides of the formwork 1, and the lower end of the bottom formwork is provided with a support member 3 with a groove structure, and the upper end of the bottom formwork is provided with a first connecting member 4 at the intersection position of the four adjacent groups of formwork 1, the first connecting member 4 is a rectangular columnar structure and is provided with a first screw hole, and the first connecting member 4 is fixed by means of a bolt passing through the bottom formwork from the lower end of the bottom formwork and extending into the first screw hole of the first connecting member 4.

[0047] The formwork 1 is arranged in an array at intervals and fixed on the bottom formwork, and the support member 3 is fixed at the lower end of the bottom formwork. The support member 3 is convenient for installing the support structure when hoisting at the construction site. The first connecting member 4 is a columnar structure and is fixed at the intersection position between the formwork 1. The position between the formwork 1 is limited due to the folding edge of the formwork. The inner side of the first connecting member 4 is used to fix the stirrups. When the first connecting member 4 is fixed, the bolts are passed through the bottom formwork from the lower end of the bottom formwork and fixed to the first connecting member 4. This fixing method facilitates demolding after pouring is completed.

[0048] like Figure 6 As shown, an L-shaped folded edge 5 is provided at one end of the support member 3 in the length direction, and adjacent support members 3 are overlapped by means of the L-shaped folded edge 5 .

[0049] The support members 3 are overlapped with each other by means of L-shaped folding edges 5 . When the support members 3 are installed, the length direction and the number of support members 3 used can be adjusted according to needs.

[0050] like Figure 1 As shown, the bottom template is formed by a plurality of bottom plates 6 spliced together in one direction, and one end of the support member 3 extends out of one side of the bottom plate 6 and the other end is retracted into the other side of the bottom plate 6.

[0051] The bottom formwork is divided into multiple bottom plates 6 at the longitudinal or transverse ribs. The bottom plates 6, formwork 1 and support members 3 are prefabricated and assembled in the factory, and then transported to the site for hoisting and splicing to form the bottom formwork, which is convenient for transportation. At the same time, there is no need to splice scattered components on site during splicing at the construction site, which improves the on-site construction efficiency. Moreover, the bottom plates 6 are spliced in a unidirectional arrangement during splicing, which reduces the difficulty of operation during splicing. Both ends of the bottom plates 6 in the length direction are fixed to the beams and / or walls. When splicing, adjacent bottom plates 6 can be overlapped with each other with the help of support members 3, which is convenient and quick to position. A support structure can be installed at the lower end of the support member 3 to support the spliced bottom plates 6, i.e., the bottom formwork, which improves construction efficiency while making construction more convenient and reducing the difficulty of construction operation.

[0052] like Figure 1-3 and Figure 5 As shown, a second connecting member 7 is provided at the upper end of the adjacent base plate 6 splicing position and the second connecting member 7 is located at the intersection of the adjacent four groups of mold shells 1. The second connecting member 7 is a C-shaped structure with an opening facing upward and a flat bottom. Second screw holes are provided on the outer walls on both sides of the opening of the second connecting member 7. The second connecting member 7 is fixed by means of bolts passing through the base plate 6 from the lower end of the base plate 6 and extending into the second screw holes of the second connecting member 7 and is fixed at the same time as the adjacent base plate 6.

[0053] The second connecting piece 7 is fixed to the upper end of the base plate 6 at the splicing position of the two adjacent base plates 6 by bolts. When fixed, the second connecting piece 7 spans the two adjacent base plates 6 to fix the two adjacent base plates 6. When fixing the stirrups, the side surfaces of the stirrups are fixed to the inner side of the second connecting piece 7, and the second connecting piece 7 is fixed by bolts passing through the base plate 6 from the lower end of the base plate 6, so as to facilitate demolding after the pouring is completed.

[0054] like Figure 1-3 As shown, a blocking plate 8 is further provided at the upper end of the splicing position of adjacent bottom plates 6 , and the blocking plate 8 is located between the second connecting members 7 and blocks the splicing seams of the adjacent bottom plates 6 .

[0055] A blocking plate 8 is installed at the joint of two adjacent base plates 6. The blocking plate 8 is fixed to the upper end of the base plate 6 and covers and blocks the joint. Blocking plates 8 are installed between adjacent second connecting members 7 to prevent leakage during pouring.

[0056] like Figure 1 and Figure 9 As shown, square spiral stirrups 9 are arranged between the formwork 1 and stress-bearing bars 10 in the same direction as the square spiral stirrups 9 are arranged inside the square spiral stirrups 9 . The square spiral stirrups 9 are fixed by means of the first connecting piece 4 and / or the second connecting piece 7 .

[0057] The square spiral stirrups 9 and the stress reinforcement 10 between the formwork 1 are fixed by the first connecting piece 4, specifically, the two sides of the square spiral stirrups 9 are fixed to the inner side of the first connecting piece 4, and the square spiral stirrups 9 and the stress reinforcement 10 at the splicing position of the base plate 6 are fixed by the second connecting piece 7, specifically, the two sides of the square spiral stirrups 9 are fixed to the inner side of the second connecting piece 7. The square spiral stirrups 9 and the stress reinforcement 10 between the formwork 1 can be assembled with the formwork 1, base plate 6, first connecting piece 4 and support member 3 during prefabrication in the factory and then transported to the construction site. The square spiral stirrups 9 and the stress reinforcement 10 at the splicing position of the base plate 6 are fixed after the second connecting piece 7 is installed after the base plate 6 is spliced at the construction site, thereby reducing the workload at the construction site and making on-site splicing and laying of steel bars more convenient and quick.

[0058] The present invention provides a construction method based on a detachable two-way rib formwork system, comprising the following steps:

[0059] a. Prefabrication

[0060] The required components are manufactured in the factory, including the required formwork 1, caulking plate 2, support member 3, first connecting member 4, L-shaped folding edge 5, bottom plate 6, second connecting member 7, blocking plate 8, square spiral stirrups 9, stress reinforcement 10 and support column 11.

[0061] b. Assembly

[0062] The completed components are assembled in the factory. During assembly, the formwork 1 is fixed on the bottom plate 6 at intervals in an array, and the caulking plate 2 is fixed in the gap between the bottom folds of the formwork 1. The position of the first connecting piece 4 is reserved between the caulking plates 2, that is, the intersection position of the four groups of formwork 1. Then the first connecting piece 4 is fixed to the intersection position of the adjacent four groups of formwork 1. The adjacent first connecting pieces 4 are staggered.

[0063] Fix the outer sides of the horizontal and vertical square spiral stirrups 9 and the stress reinforcement 10 to the inner side of the first connecting piece 4.

[0064] Fix the support member 3 to the lower end of the bottom plate 6 with the opening facing downward. When fixed, the length direction of the support member 3 is consistent with the width direction of the bottom plate 6, and one end of the support member 3 extends out of the bottom plate 6 and the other end is retracted into the bottom plate 6.

[0065] After assembly, transport to the construction site;

[0066] c. Splicing

[0067] At the construction site, the assembled base plates 6 are hoisted to the corresponding positions. The base plates 6 are overlapped on the support members 3 extending from the lower ends of the adjacent base plates 6. The support members 3 are overlapped with each other by means of L-shaped folding edges to achieve rapid positioning. Support columns 11 are installed at the lower ends of the support members 3 for support. The base plates 6 are spliced horizontally, and the outer sides of the outermost base plates 6 are fixed to the outer walls and / or beams by angle steels.

[0068] d. Laying steel bars

[0069] After the bottom plates 6 are spliced together, the blocking plates 8 are fixed to the upper ends of the splicing seams of the adjacent bottom plates 6. The thickness of the blocking plates 8 is the same as the folding edge of the formwork 1. The gaps between the folding edges of the adjacent formwork 1 at the splicing position of the bottom plates 6 are filled and the splicing seams of the bottom plates 6 are covered at the same time. The blocking plates 8 are disconnected from each other at the intersection of the four adjacent groups of formwork 1, leaving a location for the installation of the second connecting piece 7. The second connecting piece 7 is fixed at the intersection of the four adjacent groups of formwork 1. The second connecting piece 7 needs to be fixed on the two adjacent bottom plates 6 at the same time. The second connecting piece 7 The connecting piece 7 is a C-shaped structure with an open upper end and a flat lower end. The longitudinal square spiral stirrups 9 at the upper end of the splicing position of the bottom plate 6 are fixed by the second connecting piece 7. The force-bearing bars 10 are fixed on the inner side of the square spiral stirrups 9, and a concrete steel skeleton 12 is laid on the upper end above the formwork 1. Both ends of the concrete steel skeleton 12 are fixed on the outer walls and / or beams and are arranged at upper and lower intervals with the formwork 1. The concrete steel skeleton 12 is composed of horizontal bars, vertical bars and longitudinal bars. Since it belongs to conventional technology in this field, it will not be elaborated here.

[0070] e. Casting and demoulding

[0071] Pour concrete on the upper end of the bottom formwork so that the concrete completely covers all components on the upper end of the bottom formwork. Determine the thickness of the poured concrete according to construction requirements. After the concrete pouring is completed and the strength reaches the standard, remove the formwork. The removed components include the support column 11, support member 3, bottom plate 6, formwork 1, caulking plate 2 and blocking plate 8, while the first connecting member 4, second connecting member 7, square spiral stirrups 9, stress reinforcement 10 and the steel skeleton 12 at the upper end of the formwork 1 are cast as one to form a floor slab with a two-way dense rib structure.

Claims

1. A detachable bidirectional rib formwork system, comprising a bottom formwork and a formwork shell (1) arranged on the bottom formwork, wherein the formwork shells (1) are arranged in an array and spaced apart, and the formwork shells (1) are provided with folding edges on both sides and are fixed to the bottom formwork by means of the folding edges, characterized in that: The gaps between the folded edges on both sides of the adjacent mold shells (1) are provided with matching caulking plates (2), and the caulking plates (2) have the same thickness as the folded edges on both sides of the mold shells (1). A support member (3) having a groove structure is provided at the lower end of the bottom template, and a first connecting member (4) is provided at the intersection of four adjacent groups of formwork (1) at the upper end of the bottom template. The first connecting member (4) is a rectangular columnar structure and is provided with a first screw hole. The first connecting member (4) is fixed by means of a bolt that passes through the bottom template from the lower end of the bottom template and extends into the first screw hole of the first connecting member (4). L-shaped folding edges (5) are provided at both ends of the support member (3) in the length direction, and adjacent support members (3) are overlapped by means of the L-shaped folding edges (5); The bottom template is formed by splicing a plurality of bottom plates (6) in one direction, and one end of the support member (3) extends out of one side of the bottom plate (6) and the other end is retracted into the other side of the bottom plate (6); A second connecting piece (7) is provided at the upper end of the splicing position of the adjacent bottom plates (6) and the second connecting piece (7) is located at the intersection of the four adjacent groups of mold shells (1). The second connecting piece (7) is a C-shaped structure with an opening facing upward and a flat bottom. Second screw holes are provided on the outer walls on both sides of the opening of the second connecting piece (7). The second connecting piece (7) is fixed by means of bolts passing through the bottom plate (6) from the lower end of the bottom plate (6) and extending into the second screw holes of the second connecting piece (7) and is fixed simultaneously with the adjacent bottom plate (6).

2. A detachable two-way rib formwork system according to claim 1, characterized in that: A blocking plate (8) is also provided at the upper end of the splicing position of adjacent bottom plates (6); the blocking plate (8) is located between the second connecting members (7) and blocks the splicing seam of the adjacent bottom plates (6).

3. The detachable two-way rib formwork system according to claim 1, characterized in that: Square spiral stirrups (9) are provided between the formwork (1), and stress-bearing bars (10) in the same direction as the square spiral stirrups (9) are provided inside the square spiral stirrups (9), and the square spiral stirrups (9) are fixed by means of a first connecting member (4) and / or a second connecting member (7).

4. A construction method based on the detachable two-way rib formwork system according to claim 3, characterized in that: The following steps are included: a. Prefabrication The required components are manufactured in the factory; b. Assembly First, the mold shells (1) are fixed on the bottom plate (6) at intervals in an array, the caulking plate (2) is fixed in the gap between the bottom folds of the mold shells (1) and a position of the first connecting member (4) is reserved, and then the first connecting member (4) is fixed at the intersection position of the four adjacent groups of mold shells (1), and the adjacent first connecting members (4) are staggered. The transverse and longitudinal square spiral stirrups (9) and the stress-bearing bars (10) are fixed on the bottom plate (6) by means of the first connecting member (4) and are located between each adjacent set of formwork (1). The support member (3) is fixed to the lower end of the bottom plate (6) and has an opening facing downward. When fixed, the length direction of the support member (3) is consistent with the width direction of the bottom plate (6), and one end of the support member (3) extends outside the bottom plate (6) and the other end is retracted into the bottom plate (6). After assembly, transport to the construction site; c. Splicing At the construction site, the assembled bottom plate (6) is hoisted to the corresponding position, the bottom plate (6) is overlapped on the support member (3) extending from the lower end of the adjacent bottom plate (6), and the support column (11) is installed at the lower end of the support member (3) for support. The bottom plates (6) are spliced in a horizontal manner, and the outer side of the outermost bottom plate (6) is fixed to the wall and / or beam by angle steel; d. Laying steel bars After the base plates (6) are spliced together, longitudinal square spiral stirrups (9) and stress reinforcements (10) are laid between the upper formworks (1) at the joints of adjacent base plates (6), and a concrete reinforcement skeleton (12) is laid above the upper end of the formworks (1); e. Casting and demoulding Concrete is poured on the upper end of the bottom formwork, and the formwork is removed after the concrete pouring is completed and the strength reaches the standard. The removed components include the support column (11), the support member (3), the bottom plate (6), the formwork (1), the caulking plate (2) and the blocking plate (8); In the step d, a second connecting member (7) is fixed at the intersection of four adjacent groups of formwork (1). The second connecting member (7) needs to be fixed to two adjacent base plates (6) at the same time. The second connecting member (7) is a C-shaped structure with an open upper end and a flat lower end. The square spiral stirrup (9) at the upper end of the splicing position of the base plates (6) is fixed by the second connecting member (7).

5. The construction method based on the detachable two-way rib formwork system according to claim 4 is characterized in that: In step d, the blocking plate (8) is fixed to the upper end of the joint seam of the adjacent bottom plates (6); the thickness of the blocking plate (8) is the same as the folded edge of the formwork (1), and a mounting position for the second connecting member (7) is reserved.

Images