Beam and slab formwork system for plain concrete pouring

Abstract

The present invention belongs to the field of construction, and specifically relates to a beam-slab formwork system for casting clear water concrete, including a formwork base arranged on a formwork support, the formwork base including a beam side formwork and a beam bottom formwork constituting a crossbeam formwork, and a floor formwork arranged on the upper end of the beam side formwork, a group of back ribs are arranged on the outer sides of the beam side formwork, a group of reinforcement devices are arranged on the outer side of the crossbeam formwork, and a group of mountain-shaped connectors are arranged on the horizontal inner angle formed by the floor formwork and the beam side formwork. Compared with the prior art, the beneficial effects of the present invention are: 1. The formwork is doubly reinforced by a jaw reinforcement and a bayonet reinforcement, with good reinforcement effect, convenient disassembly and assembly, and no damage to the formwork; 2. The vertically fixed formworks are connected by mountain-shaped connectors and two-in-one screws, which can not only ensure the reliability of the connection between the formworks, but also convenient operation, time-saving and labor-saving, and very practical.

Description

Technical Field

[0001] The invention belongs to the field of construction, and in particular relates to a beam and slab formwork system for casting clear water concrete. Background Art

[0002] Fair-faced concrete and fair-faced concrete formwork are a form of architectural modernism, and are also called decorative concrete because of their great decorative effects. The basic idea is that after the concrete is poured, there is no longer any coating, tile, stone or other materials, and it is a way to express the plainness of the concrete. However, due to concerns about being soaked or deteriorated by rainwater, a layer of waterproof protective film may be sprayed on it.

[0003] At present, there are several problems in the construction of plain concrete beams: 1. The template reinforcement device usually adopts tension screw rods. The disadvantage of tension screw rods is that they are difficult to pull out under the squeezing force of concrete and can only be used once. Since the template is positioned by multiple iron rods, it is difficult to move a large area of ​​template along multiple iron rods when removing the template, and it is very easy to damage the template. The nut is small in size, easy to lose, and inconvenient to keep. When the nut is pulled out, it is easy to cause deformation and damage of the thread by hard knocking. The screw exposed on the concrete surface can only be cut off by gas cutting, which wastes materials and labor. Since the screw needs machine 1. Oil maintenance, it is very easy to form oil stains on the concrete surface, the base needs to be cleaned before plastering, which increases the project cost; 2. Two mutually perpendicular formworks need to be fixed by right-angle connectors. The installation process of the right-angle mountain-shaped connector is: first punch a hole in the formwork, then align the right-angle connector with the hole on the formwork, and finally install the screws. During the operation, the right-angle connector must always be pressed on the formwork by hand, and the right-angle connector must be aligned with the formwork, which is very troublesome and not convenient to operate; 3. Because the connection between the formworks is not tight enough, there is leakage at the connection of the formwork. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a technical solution for a beam and slab formwork system for casting clear water concrete.

[0005] The beam and slab formwork system for casting plain concrete is characterized in that it includes a formwork base arranged on a formwork support, the formwork base includes a beam side formwork and a beam bottom formwork constituting a crossbeam formwork, and a floor formwork arranged on the upper end of the beam side formwork, a group of back ribs are arranged on the outer sides of the beam side formwork, a group of reinforcement devices are arranged on the outer side of the crossbeam formwork, and a group of mountain-shaped connectors are arranged on the inner corner formed between the floor formwork and the beam side formwork or between two beam side formworks.

[0006] The beam and slab formwork system for casting plain concrete is characterized in that the reinforcement device includes a group of jaw reinforcements and a group of bayonet reinforcements arranged at intervals, the jaw reinforcements include a keel corresponding to the beam bottom formwork of the beam formwork, a fixed clamping piece corresponding to the beam side formwork on one side of the beam formwork, and a movable clamping piece corresponding to the beam side formwork on the other side of the beam formwork, the fixed clamping piece is fixedly connected to the head end of the keel, the movable clamping piece is slidably connected to the keel, a group of slots are provided on the tail end of the keel, a wedge block is inserted into one of the slots, the bayonet reinforcement piece includes a ribbed connecting rod integrally formed with the fixed clamping piece, the movable clamping piece is sleeved on the ribbed connecting rod, and the fixed clamping piece and the movable clamping piece are both in an arc structure.

[0007] The beam and slab formwork system for casting plain concrete is characterized in that the cross beam formwork comprises a cross beam formwork, a mountain-shaped connector is arranged on the inner corner formed by two beam side formworks on the outer side of the cross beam formwork, four jaw reinforcements are arranged at the cross intersection of the cross beam formwork to form a U-shaped structure, and the wedge blocks on each jaw reinforcement are inserted into the keel tail hole at the corresponding position.

[0008] The beam and slab formwork system for casting plain concrete is characterized in that the mountain-shaped connecting piece includes two vertically connected mounting plates and a reinforcing end plate fixedly connected to the two mounting plates, a group of slots are arranged on the mounting plates, and two opposite slots form a trumpet-shaped structure.

[0009] The beam-slab formwork system for casting plain concrete is characterized in that two-in-one screws are preset on the beam side formwork and the floor formwork, and the two-in-one screws include embedded nuts embedded in the formwork and screws threadedly connected to the embedded nuts. A group of retaining bars are arranged on the outside of the embedded nuts, and the screws protruding from the plate surface are engaged with the retaining grooves of the mountain-shaped connectors.

[0010] The beam and slab formwork system for casting plain concrete is characterized in that a group of openings are provided at the upper end of the back ribs corresponding to the floor formwork, and a group of back-supporting formworks perpendicular to the back ribs are arranged between the floor formwork and the corresponding back ribs, and the back-supporting formworks are located in the openings.

[0011] The beam-slab formwork system for casting plain concrete is characterized in that the floor formwork is a double-layer structure, one end of the floor formwork connected to the beam side formwork is set as a step structure, and the upper end of the beam side formwork is buckled with the step structure.

[0012] The beam-slab formwork system for casting clear water concrete is characterized in that the inner surfaces of the beam side formwork, beam bottom formwork and floor formwork are all bonded with a coating layer.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The formwork is doubly reinforced by the jaw reinforcement and the bayonet reinforcement, the reinforcement effect is good, the disassembly and assembly are convenient, and the formwork will not be damaged; 2. The vertically fixed formworks are connected by mountain-shaped connectors and two-in-one screws, which not only ensures the reliability of the connection between the formworks, but also is convenient to operate, saves time and effort, and is very practical; 3. The beam side formwork and the step structure of the floor formwork are interlocked to prevent leakage of slurry. In addition, the back-supporting formwork can also cover the connection seam of the floor formwork to prevent leakage of slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the structural schematic diagrams of the present invention;

[0015] Figure 2 This is the second schematic diagram of the structure of the present invention;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0018] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0019] Figure 6 It is a schematic diagram of the end surface structure of the present invention;

[0020] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0021] Figure 8 for Figure 6 Enlarged view of point E in the middle;

[0022] Fig. 9 It is a schematic diagram of the back rib structure in the present invention;

[0023] Fig.10 It is a schematic diagram of the structure of the jaw reinforcement member in the present invention;

[0024] Fig.11 It is a schematic diagram of the structure of the bayonet reinforcement member in the present invention;

[0025] Fig.12 It is a schematic diagram of the structure of the mountain-shaped connector in the present invention;

[0026] Fig.13 It is a schematic diagram of the connection structure of the mountain-shaped connector and the two-in-one screw in the present invention;

[0027] Fig.14 It is a schematic diagram of the cross-sectional structure of the two-in-one screw in the present invention.

[0028] In the figure: formwork base 1, beam side formwork 100, beam bottom formwork 101, floor formwork 102, back rib 103, opening 1030, back support formwork 104, bayonet reinforcement 2, fixed clamping part 200, ribbed connecting rod 201, movable clamping part 202, mountain-shaped connector 3, reinforced end plate 300, mounting plate 301, slot 302, arc guide angle 3020, two-in-one screw 4, embedded nut 400, clamp 4000, screw 401, jaw reinforcement 5, keel 500, slot 5000, fixed clamp 501, movable clamp 502, wedge 503, sleeve 504. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] like Figure 1-14 As shown, the beam-slab formwork system for casting plain concrete includes a formwork base 1 arranged on a formwork support. The formwork support is a formwork support structure used for cast-in-place concrete construction in buildings. Steel or wooden beams are generally assembled into formwork brackets, and steel or wooden poles are used to build scaffolding to form bracket supports.

[0031] Taking a single beam as an example, the formwork base 1 includes two beam side formworks 100 constituting the beam formwork, a beam bottom formwork 101 arranged between the bottom ends of the two beam side formworks 100, and two floor formworks 102 respectively arranged at the upper ends of the corresponding beam side formworks. The outer sides of the beam side formworks 100, the beam bottom formworks 101 and the floor formworks 102 are fixedly connected with a group of back ribs 103, a group of reinforcement devices are arranged on the outer side of the beam formwork, and a group of mountain-shaped connecting parts 3 are arranged on the inner angle formed by the floor formworks 102 and the beam side formworks 100. Among them, the inner surfaces of the beam side formwork 100, the beam bottom formwork 101 and the floor formwork 102 are all bonded with a coating layer, and the coating layer is a coating paper. The surface of the inner base plate formwork provided with the coating layer is smooth, bright, waterproof and fireproof, and has excellent durability (weather resistance, corrosion resistance, chemical resistance) and anti-fouling ability. The use of the formwork construction of the present invention makes the surface of the plain concrete formwork smoother, and the formwork can be better removed and secondary plastering can be avoided, which greatly improves work efficiency and saves manpower and materials. At the same time, since the formworks are structures composed of multiple base plates spliced ​​together, the coating layer can cover the gaps between the base plates to prevent corresponding bulges from appearing on the surface of the cast plain concrete beams and floor slabs.

[0032] Among them, the floor formwork 102 is a double-layer structure, the beam side formwork 100 and the beam bottom formwork 101 are both single-layer structures, and all three formworks are spliced ​​together by multiple pieces of the same type of formworks using the fixing effect of the back rib 103. One end of the floor formwork 102 connected to the beam side formwork 100 is set as a step structure, and the upper end of the beam side formwork 100 is engaged with the step structure.

[0033] In the present invention, the mountain-shaped connector 3 comprises two vertically connected mounting plates 301 and a reinforcing end plate 300 fixedly connected to the tops of the two mounting plates 301. Two slots 302 are arranged on the mounting plates 301. The two opposite slots 302 on the two mounting plates 301 are in a trumpet-shaped structure. The opening of the slots 302 has a circular arc guide angle 3020. The part between the two slots 302 of the mounting plate 301 forms a notch inwardly. This arrangement is for easy installation. In addition, a two-in-one screw 4 is arranged on the beam side formwork 100 and the floor formwork 102 corresponding to the connection part of the mountain-shaped connector 3. The two-in-one screw 4 comprises an embedded nut 400 embedded in the formwork and a screw 401 screwed with the embedded nut 400. A group of clips 4000 are arranged on the outside of the embedded nut 400. Every four clips 4000 form a circle, and a total of four circles of clips 4000 are arranged. The screw 401 protruding from the board surface is engaged with the slot 302 of the mountain-shaped connector 3. When in use, first install the embedded nut 400 on the mounting holes of the two templates to be fixed, and the retaining rib 4000 of the embedded nut 400 is embedded in the hole wall of the mounting hole to make the embedded nut 400 more stable, and then screw the screw 401 into the embedded nut 400, and the upper end of the screw 401 protrudes a short length from the board surface, and then press the mountain-shaped connecting piece on the inner angle between the two templates, and the mountain-shaped connecting piece slides down along the inner angle so that the section of the upper end of the screw 401 protruding from the board surface is stuck in the corresponding slot 302 of the mountain-shaped connecting piece. Since the two paired slots 302 are in a trumpet-shaped structure, they can be tightened more and more, and finally the screw 401 is completely screwed in.

[0034] In the present invention, a group of openings 1030 are provided at the upper end of the back ribs 103 corresponding to the floor template, and a group of back support templates 104 perpendicular to the back ribs 103 are fixedly connected between the floor template 102 and the corresponding back ribs 103, and the back support templates 104 are located at the openings 1030. The back support templates 104 play a supporting and reinforcing role on the one hand, and can block the connection seams of the floor template 102 on the other hand to reduce slurry leakage.

[0035] In the present invention, the reinforcement device includes a group of jaw reinforcement members 5 and a group of bayonet reinforcement members 2 arranged at intervals, both of which are staggeredly arranged on the outside of the beam formwork and are supported by the support members on the formwork support. The jaw reinforcement 5 includes a keel 500 corresponding to the bottom beam formwork 101 of the beam formwork, a fixed clamping member 501 corresponding to the beam side formwork 100 on one side of the beam formwork, and a movable clamping member 502 corresponding to the beam side formwork 100 on the other side of the beam formwork. The lower end of the fixed clamping member 501 is fixedly connected to the head end of the keel 500, and the lower end of the movable clamping member 502 is fixedly connected to the sleeve 504, and the sleeve 504 is slidably sleeved with the tail end of the keel 500. The keel 500 is a square steel pipe, and a group of slots 5000 are respectively provided on the four side surfaces of the tail end of the keel 500. A wedge block 503 is inserted into one of the horizontal slots 5000. The wedge block 503 can limit the sliding range of the movable clamping member 502, so that the movable clamping member 502 clamps the corresponding beam side formwork 100.

[0036] In the present invention, the bayonet reinforcement member 2 includes a ribbed connecting rod 201 integrally formed with a fixed clamping member 200, and a movable clamping member 202 is sleeved on the ribbed connecting rod 201, and the fixed clamping member 200 and the movable clamping member 202 are both in an arc structure. When in use, the movable clamping member 202 is knocked on one end connected to the ribbed connecting rod 201 so that the movable clamping member 202 clamps the beam mold shell. Since the movable clamping member 202 is in an arc structure, when the beam mold shell expands, the part of the movable clamping member 202 in contact with the beam mold shell is squeezed outward, which makes the part connected between the movable clamping member 202 and the ribbed connecting rod 201 tighter, and the ribbed connecting rod 201 is covered with ribs, which enhances the clamping force between the movable clamping member 202 and the ribbed connecting rod 201.

[0037] The jaw reinforcement 5 of the present invention is easy to assemble and disassemble, and has the advantages of being practical and convenient. The bayonet reinforcement 2 is flexible, easy to use, easy to assemble and disassemble, and quick to use. The two are used together with complementary advantages to make the reinforcement effect of the present invention better.

[0038] Taking the cross beam as an example, in the present invention, the cross beam formwork is a cross beam formwork, and in the cross beam formwork, a group of mountain-shaped connectors 3 are also arranged on the inner corner formed by two beam side formworks 100. The structure and installation method of the mountain-shaped connector 3 are as described above, except that the reinforcing end plate 300 of the mountain-shaped connector 3 located at the uppermost end can support the floor formwork 102. Four jaw reinforcement members 5 are respectively arranged at the cross intersection of the cross beam formwork to form a U-shaped structure, and the wedge block 503 on each jaw reinforcement member 5 is inserted into the tail hole of the keel 500 at the corresponding position, so as to reinforce the beam side formworks 100 and the beam bottom formwork 101 around the cross intersection.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The beam and slab formwork system used for casting of plain concrete is characterized by The formwork comprises a formwork base (1) arranged on a formwork support, the formwork base (1) comprising a beam side formwork (100) and a beam bottom formwork (101) constituting a beam formwork, and a floor formwork (102) arranged on the upper end of the beam side formwork, a group of back ribs (103) are arranged on the outer sides of the beam side formwork (100), the beam bottom formwork (101) and the floor formwork (102), a group of reinforcement devices are arranged on the outer side of the beam formwork, and a group of mountain-shaped connecting pieces (3) are arranged on the inner corner formed between the floor formwork (102) and the beam side formwork (100) or between two beam side formworks (100); The reinforcing device comprises a group of jaw reinforcement members (5) and a group of bayonet reinforcement members (2) arranged at intervals, the jaw reinforcement member (5) comprising a keel (500) corresponding to the beam bottom template (101) of the beam formwork, a fixed clamping member (501) corresponding to the beam side template (100) on one side of the beam formwork, and a movable clamping member (502) corresponding to the beam side template (100) on the other side of the beam formwork, the fixed clamping member (501) being fixedly connected to the head end of the keel (500), The movable clamping member (502) is slidably connected to the keel (500), a group of slots (5000) are provided on the rear end of the keel (500), a wedge block (503) is inserted into one of the slots (5000), the bayonet reinforcement member (2) comprises a ribbed connecting rod (201) integrally formed with the fixed clamping member (200), a movable clamping member (202) is sleeved on the ribbed connecting rod (201), and the fixed clamping member (200) and the movable clamping member (202) are both in an arc-shaped structure; The cross beam formwork comprises a cross beam formwork, and four jaw reinforcement members (5) are respectively arranged at the cross intersection of the cross beam formwork to form a U-shaped structure, and the wedge block (503) on each jaw reinforcement member (5) is inserted into the tail hole of the keel (500) at the corresponding position; The mountain-shaped connecting member (3) comprises two vertically connected mounting plates (301) and a reinforcing end plate (300) fixedly connected to the tops of the two mounting plates (301); two clamping grooves (302) are provided on each mounting plate (301); the two opposing clamping grooves (302) on the two mounting plates (301) form a trumpet-shaped structure; the opening of the clamping groove (302) has an arc guide angle (3020); and the portion between the two clamping grooves (302) of the mounting plate (301) forms a notch inwardly; The beam side formwork (100) and the floor formwork (102) are provided with a two-in-one screw (4), the two-in-one screw (4) comprising an embedded nut (400) embedded in the formwork and a screw (401) threadedly connected to the embedded nut (400), a group of retaining bars (4000) are provided on the outer side of the embedded nut (400), the screw (401) protruding from the board surface is engaged with the retaining groove (302) of the mountain-shaped connecting piece (3), the mountain-shaped connecting piece (3) slides down along the inner angle, so that the upper end of the screw (401) protruding from the board surface is engaged with the retaining groove (302) corresponding to the mountain-shaped connecting piece (3); A group of openings (1030) are provided at the upper end of the back ribs (103) corresponding to the floor template (102); a group of back support templates (104) perpendicular to the back ribs (103) are arranged between the floor template (102) and the corresponding back ribs (103); the back support templates (104) are located in the openings (1030).

2. The beam and slab formwork system for casting of plain concrete according to claim 1 is characterized in that The floor formwork (102) is a double-layer structure, and one end of the floor formwork (102) connected to the beam side formwork (100) is arranged as a step structure, and the upper end of the beam side formwork (100) is buckled with the step structure.

3. The beam and slab formwork system for casting of plain concrete according to claim 1 is characterized in that The inner surfaces of the beam side formwork (100), the beam bottom formwork (101) and the floor formwork (102) are all bonded with a coating layer.

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