Beam-column joint formwork fixing system

Abstract

The present invention relates to the field of building concrete construction technology, and in particular to a beam-column node casting formwork fixing system. It is used for fixing the formwork of mutually intersecting concrete beams and concrete columns, and is characterized in that the width of the concrete column is greater than that of the concrete beam, and the four corners of the concrete column protrude at the same height as the concrete beam to form a protrusion with the concrete beam, and the outer surface of the protrusion of the concrete column is provided with a protrusion formwork to wrap the protrusion, and the protrusion formwork is fixed by a fixing device, and the fixing device includes a fixing plate and a tension screw arranged outside the protrusion formwork, and the tension screw passes through the concrete column, and the two ends of the tension screw are respectively connected to the fixing plates outside different protrusion formworks, and any fixing plate is connected to at least one tension screw; the fixing plate receives the tension of the tension screw to press the protrusion formwork inward.

Description

Technical Field

[0001] The invention relates to the technical field of building concrete construction, in particular to a beam-column node casting template fixing system. Background Art

[0002] In modern reinforced concrete frame buildings, beam-column intersection nodes are very common. At the intersection of beams and columns, the spatial structure will be more complicated, and the beam templates and column templates will cross and interfere with each other. At the same time, the width of the concrete column is generally greater than the width of the concrete beam, which leads to a further increase in the number of templates at the beam-column node position. Therefore, the difficulty of template setting is greatly increased. Therefore, in the construction of such beam-column nodes cast at the same time, the node templates are often not properly supported, with poor precision and low strength.

[0003] There are also template support methods for beam-column joints with complex structures on multiple sides in the prior art. Generally, a support structure similar to a scaffold or a fixed support frame is set up externally, and then the templates on each side of the beam-column joint are fixed from the outside through the support structure. However, this method has a complex structure, higher requirements for material turnover, and is difficult to install and disassemble. Summary of the invention

[0004] The invention discloses a beam-column node casting formwork fixing system.

[0005] The technical problem to be solved is: at the intersection node position of the concrete column and the concrete beam, there are many surfaces and the structure is complex, making it difficult to effectively fix the formwork.

[0006] In order to solve the above technical problems, the beam-column node template fixing system of the present invention adopts the following solution.

[0007] The beam-column node template fixing system is used to fix the templates of the intersecting concrete beams and concrete columns. The width of the concrete column is greater than that of the concrete beam. The four corners of the concrete column protrude at the same height as the concrete beam to form a protrusion with the concrete beam.

[0008] The outer surface of the protrusion of the concrete column is provided with a protrusion template to wrap the protrusion, and the protrusion template is fixed by a fixing device.

[0009] The fixing device includes a fixing plate and a tension screw arranged outside the protruding part formwork, the tension screw passes through the concrete column, and the two ends of the tension screw are respectively connected to different fixing plates outside the protruding part formwork, and any fixing plate is connected to at least one tension screw; the fixing plate is pressed inwardly against the protruding part formwork by the tension of the tension screw.

[0010] Preferably, the protrusion of the concrete column has a positive angle, and the protrusion template is L-shaped and fits with the positive angle; the fixing plate is also L-shaped, and fits with the outer surface of the protrusion template.

[0011] Preferably, the L-shaped protrusion template is formed by splicing two mutually perpendicular templates, and the material of the fixing plate is angle steel.

[0012] Preferably, the concrete column has four positive corners at the same height as the concrete beam, two sets of tension screws are cross-intersected, and the two ends of any tension screw are respectively connected to two plates located at the diagonal position.

[0013] Preferably, a triangular pad is fixedly provided on the fixing plate, the outer surface of the pad is perpendicular to the tension screw, and the nuts at both ends of the tension screw are pressed on the outer surface of the pad.

[0014] Preferably, a plurality of tension screws are arranged at vertical intervals along the fixed plate; the pads on the fixed plate correspond one-to-one to the tension screws connected to the fixed plate, and the pads are respectively arranged on the two plate surfaces of the fixed plate; and the plurality of pads are arranged alternately in sequence on the two plate surfaces of the fixed plate.

[0015] Preferably, the beam formwork of the concrete beam is fixed by a primary and secondary keel fixing system; the concrete column is fixed by a positive angle fastener at a different height from the concrete beam.

[0016] Preferably, the side of the protrusion template extends to the outer surface of the concrete beam, the top of the protrusion template is flush with the top of the concrete beam, and the bottom of the protrusion template is flush with the bottom of the concrete beam.

[0017] Compared with the prior art, the beam-column node template fixing system of the present invention has the following beneficial effects:

[0018] In view of the structural characteristics of the beam-column joint, the present invention divides the originally square concrete column into multiple independent areas because the concrete beam extends from the column body at the same height as the concrete beam, and the concrete beam is generally narrower, so that multiple protrusions are formed on the concrete column, and other positions of the concrete column at the same height as the concrete beam are occupied by the concrete beam.

[0019] Therefore, the present invention first sets the protruding part formwork, and then sets its own formwork for the concrete beam. The protruding part formwork is fixed by a fixing device. The fixing devices are all common building materials on the construction site, which are easy to obtain, convenient to process, fast to construct, can be used in a turnover manner, and are low in cost. In addition, the fixing device is simple to set up and disassemble, and does not occupy the construction site space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of an implementation method of the beam-column node template fixing system of the present invention;

[0021] Figure 2 yes Figure 1Horizontal section view at the same height of the middle beam;

[0022] Figure 3 This is a horizontal section view of the beam at the same height in another embodiment.

[0023] Figure 4 It is a three-dimensional diagram of the fixing device part.

[0024] Description of reference numerals:

[0025] 1-concrete column, 1a-protrusion;

[0026] 2-Concrete beams;

[0027] 3- protrusion template;

[0028] 4-fixing device, 4a-fixing plate, 4b-tension screw, 4c-shim block;

[0029] 5-Beam formwork. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0031] In the present invention, unless otherwise stated, directional words such as "up, down, left, right" generally refer to the Figure 1 The upper, lower, left and right shown in the figure; "inside and outside" refer to the inside and outside relative to the outline of each component itself. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to solve the problem that the template is difficult to effectively fix at the intersection of the concrete column 1 and the concrete beam 2, the template has many faces and a complex structure, the present invention proposes a beam-column node template fixing system, such as Figures 1 to 4 As shown in .

[0033] The beam-column node template fixing system is used for template fixing of mutually intersecting concrete beams 2 and concrete columns 1. The width of the concrete column 1 is greater than that of the concrete beam 2. The four corners of the concrete column 1 protrude at the same height as the concrete beam 2 to form protrusions 1a with the concrete beam 2.

[0034] The outer surface of the protrusion 1a of the concrete column 1 is provided with a protrusion template 3 that wraps the protrusion 1a, and the protrusion template 3 is fixed by a fixing device 4.

[0035] The fixing device 4 includes a fixing plate 4a and a tension screw 4b arranged outside the protruding part formwork 3. The tension screw 4b passes through the concrete column 1. The two ends of the tension screw 4b are respectively connected to the fixing plates 4a outside different protruding part formworks 3. Any fixing plate 4a is connected to at least one tension screw 4b. The fixing plate 4a is pressed inwardly against the protruding part formwork 3 by the tension force of the tension screw 4b.

[0036] The present invention is specially designed for the beam-column joint where the width of the concrete beam 2 is smaller than that of the concrete column 1. The beam template 5 of the concrete beam 2 is fixed by the primary and secondary keel fixing system; the concrete column 1 is fixed by the external angle clip at a different height from the concrete beam 2. The concrete column 1 is fixed at the same height as the concrete beam 2 by the fixing device 4 in combination with the protruding template 3, thereby forming the entire beam-column joint and the templates of the concrete beam 2 and the concrete column 1, and then the construction of the beam and column can be completed by pouring concrete.

[0037] The concrete column 1 is generally rectangular, such as Figure 2 and Figure 3 As shown in the figure, four protrusions 1a are formed at the four corners of the rectangle. Here, the protrusions 1a are for convenience of description, and actually refer to the concrete columns 1 protruding outward between the two concrete beams 2. Then, a protrusion template 3 is set outside the protrusion 1a, and the protrusion template 3 is fixed by an external fixing plate 4a, and then the fixing plate 4a is pulled by the tension screw 4b.

[0038] The concrete column 1 is generally a rectangular structure, and the protruding portion 1a of the concrete column 1 has a positive angle, such as Figure 2 and Figure 3 As shown, the protrusion template 3 is L-shaped and fits the outer corner; the fixing plate 4a is also L-shaped, and the fixing plate 4a fits the outer surface of the protrusion template 3. The L-shaped protrusion template 3 is spliced ​​by two mutually perpendicular templates, and the material of the fixing plate 4a is angle steel. The fixing plate 4a is provided with a through hole for the tension bolt to pass through.

[0039] The tensioning screws 4b can be arranged in parallel in multiple paths, or as Figure 4 As shown in the figure, the concrete column 1 has four positive corners at the same height as the concrete beam 2, two groups of tension screws 4b are cross-intersected, and the two ends of any tension screw 4b are respectively connected to two plates located at the diagonal position.

[0040] A triangular pad 4c is fixedly arranged on the fixing plate 4a, and the outer surface of the pad 4c is perpendicular to the tension screw 4b, and the nuts at both ends of the tension screw 4b are pressed on the outer surface of the pad 4c. The material of the pad 4c is also angle steel, which is welded and fixed to the outer side of one surface of the fixing plate 4a, and it is sufficient to ensure that one outer surface of the angle steel is perpendicular to the tension screw 4b.

[0041] A plurality of tension screws 4b are arranged at vertical intervals along the fixed plate 4a; the pads 4c on the fixed plate 4a correspond one-to-one to the tension screws 4b connected to the fixed plate 4a, and the pads 4c are respectively arranged on the two plate surfaces of the fixed plate 4a; and the plurality of pads 4c are arranged alternately in sequence on the two plate surfaces of the fixed plate 4a.

[0042] The pad 4c is connected to the fixing plate 4a, and the corresponding surfaces of the two pads 4c located on the diagonal of the concrete column 1 should be parallel to each other.

[0043] The fixing plate 4a is provided with a horizontal opening area perpendicular to the longitudinal direction of the fixing plate 4a at the position where the tension screw 4b passes through, so as to adjust the position of the tension screw 4b and facilitate the release of temperature stress.

[0044] The number of pads 4c in each group is determined by the longitudinal positive angle and negative angle of the column (when the column cross section is an irregular polygon, the number of negative angles may be determined), and the pads 4c in the same group are located at the same height of the fixed plate 4a. Generally, 2 to 3 groups of pads 4c are set, depending on the height of the concrete beam 2.

[0045] The positions of two adjacent groups of cushion blocks 4c are staggered in the vertical direction, see Figure 2 The distance between two adjacent groups of pads 4c should be determined according to the height of the concrete beam 2.

[0046] After the tension screw 4b with PVC sleeve passes through the two opposite pads 4c, the opening area of ​​the fixing plate 4a, and the protrusion template 3, double nuts are used to tighten the limit at both ends of the tension screw 4b; the number of tension screws 4b in the same group of pads 4c is at least 2 groups and should form a geometrically invariant system. These 2 groups should be distributed in a scissor-like manner.

[0047] The cross section of the concrete column 1 is not limited to a square cross section, and may also be a rectangular cross section, a polygonal cross section, or a circular cross section.

[0048] When the cross section of the concrete column 1 is a concave polygon, the fixing plate 4a can be arranged outside the template at the inner corner of the cross section.

[0049] When the cross section of the concrete column 1 is circular, the fixing plate 4a should be replaced by an arc-shaped steel plate, and the tension screw 4b should pass through the center of the cylindrical cross section. In this case, there is no need to set the pad 4c.

[0050] The angle between the two surfaces of the cushion block 4c and the fixing plate 4a is not limited to 90 degrees, but it must be ensured that the same surfaces of two opposite cushion blocks 4c in the same group are parallel to each other.

[0051] The fixed plate 4a may be provided with a specific device at the bottom for adjusting the length, which may be a drawer type or a folding type, but one or two sets of cushion blocks 4c and tension screws 4b should be provided at the extended portion according to the actual situation. When the fixed plate 4a is adjusted in the drawer type, there will be an overlap between the two sections of the fixed plate 4a.

[0052] When the length adjustment form of the fixing plate 4a is foldable, a rotating shaft is installed at the bottom of one side of a fixing plate 4a to connect with another fixing plate 4a.

[0053] The beam formwork 5 of the concrete beam 2 is fixed by a primary and secondary keel fixing system; the concrete column 1 is fixed at a different height from the concrete beam 2 by a positive angle fastener.

[0054] The side of the protrusion formwork 3 extends to the outer surface of the concrete beam 2 , the top of the protrusion formwork 3 is flush with the top of the concrete beam 2 , and the bottom of the protrusion formwork 3 is flush with the bottom of the concrete beam 2 .

[0055] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A beam-column node formwork fixing system, used for fixing the formwork of mutually intersecting concrete beams (2) and concrete columns (1), characterized in that: The width of the concrete column (1) is greater than that of the concrete beam (2); the four corners of the concrete column (1) protrude at the same height as the concrete beam (2) to form protrusions (1a) with the concrete beam (2); The outer surface of the protrusion (1a) of the concrete column (1) is provided with a protrusion template (3) wrapping the protrusion (1a), and the protrusion template (3) is fixed by a fixing device (4). The fixing device (4) comprises a fixing plate (4a) and a tension screw (4b) arranged outside the protruding part formwork (3); the tension screw (4b) passes through the concrete column (1); the two ends of the tension screw (4b) are respectively connected to different fixing plates (4a) outside the protruding part formwork (3); any fixing plate (4a) is connected to at least one tension screw (4b); the fixing plate (4a) is pressed inwardly against the protruding part formwork (3) by the tension force of the tension screw (4b); The protruding portion (1a) of the concrete column (1) has a positive angle, and the protruding portion template (3) is L-shaped and fits the positive angle; the fixing plate (4a) is also L-shaped, and fits the outer surface of the protruding portion template (3); the L-shaped protruding portion template (3) is formed by splicing two mutually perpendicular templates, and the fixing plate (4a) is made of angle steel; the concrete column (1) has four positive angles at the same height as the concrete beam (2), and two groups of tension screws (4b) are cross-connected, and the two ends of any tension screw (4b) are respectively connected to two plates located at diagonal positions; the A triangular pad (4c) is fixedly arranged on the fixed plate (4a), the outer surface of the pad (4c) is perpendicular to the tension screw (4b), and nuts at both ends of the tension screw (4b) are pressed on the outer surface of the pad (4c); a plurality of tension screws (4b) are arranged vertically at intervals along the fixed plate (4a); the pads (4c) on the fixed plate (4a) correspond one-to-one to the tension screws (4b) connected to the fixed plate (4a), and the pads (4c) are respectively arranged on two plate surfaces of the fixed plate (4a); and the plurality of pads (4c) are arranged alternately in sequence on the two plate surfaces of the fixed plate (4a).

2. The beam-column node formwork fixing system according to claim 1 is characterized in that: The beam formwork (5) of the concrete beam (2) is fixed by means of a primary and secondary keel fixing system; the concrete column (1) is fixed at a different height from the concrete beam (2) by means of a positive angle fastener.

3. The beam-column node formwork fixing system according to claim 1 is characterized in that: The side edge of the protrusion template (3) extends to the outer surface of the concrete beam (2), the top of the protrusion template (3) is flush with the top of the concrete beam (2), and the bottom of the protrusion template (3) is flush with the bottom of the concrete beam (2).

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