Cast-in-place shear wall and column root template positioning device

Abstract

The invention relates to a cast-in-place shear wall and column root template mounting and positioning device, and belongs to the technical field of building materials. Comprising a locking belt, a positioning rod, a fixing semi-ring and a self-locking device which are integrally formed by engineering plastics, and the working principle is similar to that of a self-locking nylon cable tie. The positioning rods are cylindrical bodies, and the two positioning rods form a right angle and are formed on the outer sides of the fixed semi-rings. The inner diameter of the fixed semi-ring is consistent with the diameter of a longitudinal bar of a shear wall and a column, and the fixed semi-ring is a thicker semi-ring fixed on the longitudinal bar through a locking belt penetrating through a self-locking device. The locking belt is an extending section which is integrally formed with one end of the fixing semi-ring and gradually changes. The self-locking device is a protruding part which is integrally formed with the other end of the fixed semi-ring. The positioning method comprises the steps that the locking belt penetrates through the self-locking device, after the direction is adjusted, the locking belt is tensioned to be fixed to the root of the longitudinal rib, and the positioning rod is cut off for positioning according to the position of the formwork where the positioning control line is installed. According to the device, the cast-in-place wall and column formworks can be accurately positioned, the construction process is safe and rapid, the quality is effectively guaranteed, the cost is low, and the applicability is high.

Description

Technical Field

[0001] The invention relates to a cast-in-place shear wall and a column root formwork positioning device, and belongs to the technical field of building materials. Background Art

[0002] The accuracy of the formwork positioning at the base of cast-in-place shear walls and columns and the material of the positioning parts used are related to the quality issues such as the thickness of the concrete protective layer of the steel bars. If the concrete protective layer of the steel bars is not thick enough or metal positioning parts are used, the steel bars in the concrete will be easily affected by the environment, causing them to rust and expand, and then the concrete around the steel bars will gradually crack and peel off, greatly reducing the bearing capacity of the reinforced concrete shear walls and columns, affecting the service life of buildings and structures, and even causing collapse accidents due to the inability to bear the expected force. The traditional formwork positioning construction of cast-in-place shear walls and column bases uses welding machines and temporary electricity, which is a special operation with high safety risks; there are many process preparations and a long construction time; the amount of consumables is large and the cost is high.

[0003] At present, the method for positioning the template at the root of cast-in-place shear walls and columns is as follows: after the concrete pouring is completed and reaches a certain strength, the surveyor uses an ink fountain to pop out the template installation positioning control line on the concrete surface, and the welder uses the positioning short steel bar to spot weld the longitudinal bars of the shear wall perpendicular to the template installation positioning control line every 5 or so longitudinal bars at the root of the shear wall, or spot welds 8 positioning short steel bars on the 4 longitudinal bars of the column perpendicular to the template installation positioning control line on the longitudinal bars at the four corners of the column root, and then cuts off the excess part of the positioning short steel bar with a cutting machine or a pair of powerful scissors according to the template installation positioning control line. Another template positioning method is: before the concrete pouring is completed and finally set, the longitudinal short steel bars for positioning are pre-inserted at the corresponding longitudinal bars at the root of the cast-in-place shear wall and column as described above, and after the concrete reaches a certain strength, the surveyor and the welder successively spot weld the positioning short steel bar on the pre-inserted longitudinal short steel bar according to the above method to carry out the construction of the template installation positioning device. The problems existing in the construction process of the above method are: 1. It violates the requirement of "Technical Code for Concrete Structure of High-rise Buildings" that "the longitudinal reinforcement of the column should not be welded with stirrups, tension bars and embedded parts"; 2. It violates the requirement of "Concrete Structure Engineering Construction Code" that "metal positioning parts should not be used in the protective layer of concrete frame beams and columns"; 3. Special operations personnel are required to use electric welding machines, temporary electricity, etc. for construction, and the safety risk is relatively high; 4. Many auxiliary materials are used, many processes are involved, the construction time is long, and the cost is relatively high. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a cast-in-place shear wall and column root formwork positioning device, which can be installed in the correct position safely, with guaranteed quality, accurately and quickly, and has low use cost.

[0005] The technical solution proposed by the present invention to solve the above technical problems is: a positioning device for the formwork at the base of a cast-in-place shear wall or column, comprising a positioning rod, a fixed semi-ring, a locking belt, and a self-locking device, which are integrally formed with engineering plastics, and whose working principle is similar to that of a self-locking nylon tie. The positioning rod is a columnar body, with a raised water-blocking ring near the root, and two rings are integrally formed at right angles to each other on the outside of the fixed semi-ring. The inner diameter of the fixed semi-ring is consistent with the diameter of the longitudinal reinforcement of the shear wall or column, and there are anti-slip serrations on the inside, which are fixed to the thicker semicircular ring on the longitudinal reinforcement by a locking belt and a self-locking device. The locking belt is an extension section integrally formed with one end of the fixed semi-ring, which gradually becomes thinner and narrower, has anti-slip serrations on the inside, and is long enough to pass through the self-locking device. The self-locking device is a part with anti-slip serrations in the hole of the raised part integrally formed with the other end of the fixed semi-ring. The positioning method is: passing the locking belt through the self-locking device, manually adjusting the direction and tightening the locking belt to fix the positioning piece at the root of the longitudinal reinforcement, and cutting the positioning rod for positioning according to the position of the template installation positioning control line.

[0006] The beneficial effects of the present invention are:

[0007] The present invention is integrally formed according to the specifications of the longitudinal reinforcement, which can meet the installation and positioning of the cast-in-place shear wall and the column root template, without safety and quality risks, without auxiliary materials such as electric welding machines and welding materials and special operators, easy for operators to master, simple operation, fast construction speed, high precision, saving materials and labor, low use cost, and strong applicability. Engineering plastics are light in weight, high in strength, well combined with concrete, not easy to age, and can adapt to various harsh natural environments, ensuring that the longitudinal reinforcement of the concrete shear wall and column at the positioning position is not affected by the environment and rusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0009] Figure 2 for Figure 1 FIG. 1 is a schematic front view of a free state of an embodiment of the present invention.

[0010] Figure 3 for Figure 1 FIG. 2 is a front view schematic diagram of the working state of an embodiment of the present invention.

[0011] Figure 4 for Figure 1 Schematic diagram of the cast-in-place column root installation state (the excess part of the positioning rod is not cut off) of an embodiment of the present invention.

[0012] Figure 5 for Figure 1 Schematic diagram of the installation state of the root of the cast-in-place shear wall of an embodiment of the present invention (the excess part of the positioning rod is not cut off). DETAILED DESCRIPTION

[0013] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 As shown, the cast-in-place shear wall and column root formwork positioning device of this embodiment includes a locking belt 2, a positioning rod 3, a fixing half ring 4, a water blocking ring 5, and a self-locking device 6.

[0015] Example:

[0016] Installation and positioning of formwork for cast-in-place shear walls and column roots: After the concrete pouring is completed and reaches a certain strength, the surveyor uses an ink fountain to pop out the formwork installation positioning control line 7 on the concrete surface, and the operator inserts the positioning device 8 into the longitudinal reinforcement 10 every 5 or so longitudinal reinforcements 10 at the root of the shear wall, or on the longitudinal reinforcements 10 at the four corners of the column root, so that the locking belt 2 passes through the self-locking device 6, adjusts the fixed half ring 4 so that the direction of the positioning rod 3 is perpendicular to the formwork installation positioning control line 7, tightens the locking belt 2, and then uses scissors to cut off the excess part of the positioning rod 3 according to the positioning rod cut-off position 9 at the formwork installation positioning control line 7.

[0017] The cast-in-place shear wall and column root formwork positioning device of the present invention is not limited to the above-mentioned embodiments. Any technical solutions obtained by equivalent replacement methods (such as no water blocking ring, non-serrated locking, etc.) fall within the scope of protection required by the present invention.

Claims

1. A cast-in-place shear wall and column root formwork positioning device, characterized in that: The template positioning part comprises a locking belt (2), a positioning rod (3), a fixed semi-ring (4), and a self-locking device (6) which are integrally formed of engineering plastics. The positioning rod (3) is a columnar body with a raised water blocking ring (5) near the root. Two rods are integrally formed at right angles to each other on the outside of the fixed semi-ring (4). The inner diameter of the fixed semi-ring (4) is consistent with the diameter of the longitudinal reinforcement (10) of the shear wall and the column. The inner side has anti-skid serrations (1). The thicker semi-circular ring is fixed on the longitudinal reinforcement (10) through the locking belt (2) and the self-locking device (6). The locking belt (2) is an extension section integrally formed with one end of the fixed semi-ring (4), which gradually becomes thinner and narrower and has anti-skid serrations (1) on the inner side. The length is sufficient to pass through the self-locking device (6). The self-locking device (6) is a convex part integrally formed with the other end of the fixed semi-ring (4). The positioning method is to cut off the positioning rod for positioning according to the position of the template installation positioning control line (7).

2. The cast-in-place shear wall and column root formwork positioning device according to claim 1 is characterized in that: The fixed half ring (4) has two positioning rods (3) at right angles to each other on the outside, and the two ends are respectively a locking belt (2) with anti-slip serrations (1) on the inside and a self-locking device (6) made of engineering plastics as one piece. Its working principle is similar to that of a self-locking nylon tie.

3. The cast-in-place shear wall and column root formwork positioning device according to claim 1 is characterized in that: The positioning rod (3) is made of a columnar body, and has a raised water blocking ring (5) near the root. The two rods are integrally formed at right angles to each other on the outside of the fixed half ring (4).

4. The cast-in-place shear wall and column root formwork positioning device according to claim 1, characterized in that: The inner diameter of the fixing half ring (4) is consistent with the diameter of the shear wall and column longitudinal reinforcement (10), and the inner side is provided with anti-slip serrations (1). The thicker half ring is fixed on the longitudinal reinforcement (10) by a locking belt (2) and a self-locking device (6).

5. The cast-in-place shear wall and column root formwork positioning device according to claim 1, characterized in that: The locking belt (2) is an extension section integrally formed with one end of the fixed half ring (4), which gradually becomes thinner and narrower and has anti-slip serrations (1) on the inner side, and is long enough to pass through the self-locking device (6).

6. The cast-in-place shear wall and column root formwork positioning device according to claim 1, characterized in that: The self-locking device (6) is a protruding portion integrally formed with the other end of the fixed half ring (4), and a non-slip sawtooth (1) is provided in the hole of the protruding portion for locking.

7. The cast-in-place shear wall and column root formwork positioning device according to claim 1, characterized in that: The positioning method comprises passing the locking belt (2) through the self-locking device (6), manually adjusting the direction and tightening the locking belt (2) to fix it at the root of the longitudinal reinforcement (10), and then cutting the positioning rod at the positioning rod cutting position (9) according to the position of the template installation positioning control line (7), so that the installation position of the template is controlled at the cut-off end.

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