Structure for changing external corner to internal corner of shear wall formwork and construction method thereof

Abstract

The invention discloses a shear wall formwork external corner-to-internal corner structure and a construction method thereof.The shear wall formwork external corner-to-internal corner structure comprises two side formworks and an end formwork, a pouring space of a to-be-poured shear wall is formed between the side formworks and the end formwork, and the ends of the side formworks in the length direction exceed the end formwork by a certain distance; two reinforcing steel pipes parallel to the length direction of the end formwork are arranged on the outer side of the end formwork and make contact with the outer side of the formwork, a plurality of horizontally-arranged fastening steel pipes are arranged on the outer side of the side formwork, and every two opposite fastening steel pipes are fastened through a plurality of split bolts. The outer side face of the reinforcing steel pipe makes contact with the split bolt on the outermost side, and the technical problem that in the prior art, a formwork structure at the external corner is prone to formwork expansion, formwork shifting and deformation is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and in particular relates to a shear wall template positive angle to negative angle conversion structure and a construction method thereof. Background Art

[0002] In modern building construction, shear walls are important load-bearing and earthquake-resistant structures, and their construction quality is directly related to the overall stability and safety of the building. The treatment of positive angles (i.e. protruding angles) and negative angles (i.e. recessed angles) in shear wall construction is one of the technical difficulties. The traditional method generally vertically splices the formwork according to the positive angles of the shear wall. This construction method often has problems such as insufficient reinforcement and easy cracking. If you are not careful, the positive angles are prone to mold expansion, mold running, and deformation, resulting in concrete leakage, affecting the quality of structural construction, and the appearance of the concrete is poor after demolding. Therefore, it is particularly important to develop a new shear wall formwork positive angle reinforcement structure and method. Summary of the invention

[0003] The purpose of the present invention is to provide a shear wall template positive corner to negative corner structure and a construction method thereof, so as to solve the technical problems in the above-mentioned prior art that the template structure at the positive corner is prone to mold expansion, mold running and deformation.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A shear wall formwork positive angle to negative angle structure, comprising: two side formworks and an end formwork, wherein a casting space for a shear wall to be cast is formed between the side formworks and the end formworks, wherein the end of the side formworks in the length direction exceeds the end formworks by a certain distance, and two reinforcing steel pipes parallel to the length direction of the end formworks are arranged on the outside of the end formworks, wherein the reinforcing steel pipes are in contact with the outside of the formworks, and a plurality of horizontally arranged fastening steel pipes are arranged on the outside of the side formworks, wherein the two facing fastening steel pipes are fastened by a plurality of tension bolts, and the outer side surface of the reinforcing steel pipes is in contact with the outermost tension bolts.

[0006] The invention provides a shear wall template positive angle to negative angle structure, wherein the end of the side template in the length direction is flush with the outer side surface of the reinforced steel pipe.

[0007] The invention discloses a shear wall formwork positive angle-to-negative angle structure, in which a plurality of wooden beams are arranged between the side formwork and the fastening steel pipe.

[0008] The invention discloses a shear wall template external angle-to-internal angle structure, wherein the wooden beams are arranged vertically.

[0009] The invention discloses a shear wall template positive angle-to-negative angle structure, wherein both ends of the tension bolts are equipped with mountain-shaped clamps, and the mountain-shaped clamps clamp and fix the fastening steel pipes.

[0010] A construction method for a shear wall template positive angle to negative angle structure comprises the following steps:

[0011] S1. Formwork design: Design and make side formwork according to the design drawings of the shear wall to be cast and the on-site construction conditions.

[0012] The inner angle structure is formed at the outer angle by making the side formwork extend beyond the end formwork by a certain distance;

[0013] S2. Base treatment: Before pouring the shear wall, clean the base thoroughly to ensure that the base is flat and free of debris;

[0014] S3. Formwork installation: Fix the side formwork and end formwork on the base through the fixing device. First erect the end formwork on one side according to the edge line, tie the protective layer pads, and then erect the end formwork on the other side. Install the designed side formwork to the positive angle position, press the formed negative angle part with reinforced steel pipe, and install other secondary keels; ensure that the position of the formwork is accurate, and the verticality and flatness meet the requirements of the specification;

[0015] S4, reinforcement treatment: set reinforcement pieces on both sides of the inner corner formed by the formwork, set reserved holes for the tension screws to pass through, pass the tension screws through the fastening steel pipes for tensioning and fixing, and prepare for the pouring of the shear wall after all the reinforcement structures of the formwork are accepted;

[0016] S5. Pouring and curing: During the pouring process, the quality and speed of concrete should be controlled to ensure that the concrete is evenly and densely filled in the formwork cavity. After the pouring is completed, curing work should be carried out in time to ensure that the concrete reaches the designed strength;

[0017] S6. Dismantling and reusing: After reaching the curing strength, the formwork and related accessories are dismantled. When dismantling, first loosen the reinforcement components on the outside of the shear wall, then take out the tension bolts and reinforcing steel pipes. After the concrete strength can ensure that its surface and edges are not damaged by demolding, the end formwork and side formwork on the outside of the wall can be dismantled, and the dismantled formwork can be relocated to other locations for use;

[0018] S7, repeat steps s2-s6 to construct another shear wall to be cast.

[0019] In the construction method of a shear wall template external corner to internal corner structure of the present invention, the base is wetted after cleaning in step s2.

[0020] In a construction method for a shear wall template external corner to internal corner structure of the present invention, the holes in step s4 are arranged at a spacing of 450mm×450mm, and the centers of the holes at the same elevation are on the same straight line.

[0021] The invention discloses a construction method for a shear wall template positive angle-to-negative angle structure, wherein a sleeve is installed in the hole through which the reserved tension screw passes.

[0022] The beneficial effects of the present invention are as follows: a shear wall template positive angle to negative angle structure and a construction method thereof are proposed, by lengthening the side template, the positive angle structure is transformed into a negative angle structure, and a reinforcing steel pipe is pressed on the negative angle, combined with reinforcement measures, the bearing capacity and crack resistance of the positive angle of the shear wall are significantly improved, and the huge impact force during the concrete pouring process can be withstood; steel is used instead of wood, energy saving and environmental protection are achieved, the turnover times are high, the use of wood is reduced, and the social demand for green buildings is met; the side template is used to wrap the wall end for reinforcement, which is suitable for the reinforcement of the ends of walls of various sizes and has a wide range of applications; the customized template and optimized reinforcement structure simplify the construction process and shorten the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0024] Figure 1 Schematic diagram of the outer template of the shear wall to be cast according to an embodiment of the present invention;

[0025] Figure 2 is a top view of an embodiment of the present invention;

[0026] Figure 3 It is an elevation view of an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] like Figure 1-3 As shown, a shear wall formwork positive angle to negative angle structure comprises: two side formworks 2 and an end formwork 8, wherein a casting space for a shear wall 1 to be cast is formed between the side formworks 2 and the end formworks 8, wherein the end portion of the side formwork 2 in the length direction exceeds the end formwork 8 by a certain distance, and two reinforcing steel pipes 3 parallel to the length direction of the end formwork 8 are arranged on the outside of the end formwork 8, wherein the reinforcing steel pipes 3 are in contact with the outside of the formwork 8, and a plurality of horizontally arranged fastening steel pipes 5 are arranged on the outside of the side formwork 2, wherein the two facing fastening steel pipes 5 are fastened by a plurality of tension bolts 7, and the outer side surface of the reinforcing steel pipe 3 is in contact with the outermost tension bolts 7.

[0029] It should be noted that by lengthening the template at the external corner to transform it into a structure of the internal corner, and pressing a reinforcing steel pipe 3 on the transformed internal corner, combined with reinforcement measures, the bearing capacity and crack resistance of the external corner are significantly improved. This method is not only suitable for new buildings, but also can be used for the renovation and reinforcement of old buildings.

[0030] In a preferred embodiment of the present invention, the end of the side formwork 2 in the length direction is flush with the outer side surface of the reinforcing steel pipe 3, so that the plane positioning of the end formwork 8 and the lateral positioning of the side formwork 2 can be well achieved.

[0031] In a preferred embodiment of the present invention, a plurality of wooden beams 4 are provided between the side formwork 2 and the fastening steel pipe 5, so that the fastening steel pipe 5 can be subjected to more uniform stress, thereby achieving a better fastening effect.

[0032] In a preferred embodiment of the present invention, the wooden beams 4 are arranged vertically, and the horizontal and vertical cross-arrangement makes the force on the outer side of the side formwork 2 more uniform.

[0033] In a preferred embodiment of the present invention, both ends of the tension bolts 7 are equipped with mountain-shaped clamps 6, and the mountain-shaped clamps 6 clamp and fix the fastening steel pipes 5. Through the combination of the mountain-shaped clamps and the steel pipes, the shear wall end formwork is tightened to play an overall reinforcement role.

[0034] A construction method for a shear wall template positive angle to negative angle structure comprises the following steps:

[0035] S1. Formwork design: According to the design drawings of the shear wall 1 to be cast and the on-site construction conditions, the side formwork 2 is designed and manufactured so that the side formwork 2 extends beyond the end formwork 8 by a certain distance to form a negative angle structure at the positive angle;

[0036] S2. Base treatment: Before pouring the shear wall, clean the base thoroughly to ensure that the base is flat and free of debris;

[0037] S3, template installation: fix the side template 2 and the end template 8 on the base through the fixing device, first erect the end template 8 on one side according to the edge line, tie the protective layer pad, and then erect the end template 8 on the other side, install the designed side template 5 to the positive angle position, press the formed negative angle part with the reinforcing steel pipe 3, and install other secondary keels; ensure that the template position is accurate, and the verticality and flatness meet the requirements of the specification;

[0038] S4, reinforcement treatment: Reinforcement members are arranged on both sides of the inner corner formed by the template, reserved holes are arranged for the tension screws 7 to pass through, and the tension screws 7 are passed through the fastening steel pipes 5 for tensioning and fixing. After all the reinforcement structures of the template are accepted, the pouring of the shear wall 1 to be poured is prepared;

[0039] S5. Pouring and curing: During the pouring process, the quality and speed of concrete should be controlled to ensure that the concrete is evenly and densely filled in the formwork cavity. After the pouring is completed, curing work should be carried out in time to ensure that the concrete reaches the designed strength;

[0040] S6, dismantling and reusing: after reaching the curing strength, the formwork and related accessories are dismantled. When dismantling, first loosen the reinforcement components on the outside of the shear wall, then take out the tension bolts 7 and the reinforcing steel pipe 3. After the concrete strength can ensure that its surface and edges are not damaged by demolding, the end formwork 8 and side formwork 2 on the outside of the wall can be dismantled, and the dismantled formwork can be relocated to other locations for use;

[0041] S7, repeat steps s2-s6 to construct another shear wall 1 to be cast.

[0042] In a preferred embodiment of the present invention, the substrate is wetted after cleaning in step s2 to facilitate template fixation and mortar bonding.

[0043] In a preferred embodiment of the present invention, the holes in step s4 are arranged at a spacing of 450 mm×450 mm, and the centers of the holes at the same elevation are on the same straight line.

[0044] In a preferred embodiment of the present invention, a sleeve is installed in the hole through which the reserved tension screw 7 passes.

[0045] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0047] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A shear wall formwork positive angle to negative angle structure, characterized in that: include: Two side formworks (2) and an end formwork (8), a pouring space for a shear wall (1) to be poured is formed between the side formworks (2) and the end formworks (8), the end of the side formwork (2) in the length direction exceeds the end formwork (8) by a certain distance, two reinforcing steel pipes (3) parallel to the length direction of the end formwork (8) are arranged on the outside of the end formwork (8), the reinforcing steel pipes (3) are in contact with the outside of the formwork (8), a plurality of horizontally arranged fastening steel pipes (5) are arranged on the outside of the side formwork (2), the two fastening steel pipes (5) facing each other are fastened by a plurality of tension bolts (7), and the outer side surface of the reinforcing steel pipe (3) is in contact with the outermost tension bolt (7).

2. A shear wall formwork positive angle to negative angle structure according to claim 1, characterized in that: The end of the side template (2) in the length direction is flush with the outer side surface of the reinforcing steel pipe (3).

3. A shear wall formwork positive angle to negative angle structure according to claim 2, characterized in that: A plurality of wooden beams (4) are arranged between the side formwork (2) and the fastening steel pipe (5).

4. A shear wall formwork positive angle to negative angle structure according to claim 3, characterized in that: The wooden beam (4) is arranged vertically.

5. A shear wall formwork positive angle to negative angle structure according to claim 4, characterized in that: Both ends of the tension bolt (7) are equipped with mountain-shaped clamps (6), and the mountain-shaped clamps (6) clamp and fix the fastening steel pipe (5).

6. A construction method for a shear wall template positive angle to negative angle structure: characterized in that: The following steps are involved: S1. Formwork design: according to the design drawings of the shear wall (1) to be cast and the on-site construction conditions, the side formwork (2) is designed and manufactured so that the side formwork (2) extends beyond the end formwork (8) by a certain distance to form a negative angle structure at the positive angle; S2. Base treatment: Before pouring the shear wall, clean the base thoroughly to ensure that the base is flat and free of debris; S3, template installation: fix the side template (2) and the end template (8) on the base through the fixing device, first erect the end template (8) on one side according to the edge line, tie the protective layer pad, and then erect the end template (8) on the other side, install the designed side template (5) to the positive angle position, press the formed negative angle part with the reinforcing steel pipe (3), and install other secondary keels; ensure that the template position is accurate, and the verticality and flatness meet the requirements of the specification; S4, reinforcement treatment: reinforcement pieces are arranged on both sides of the inner corner formed by the template, reserved holes are arranged for the tension screws (7) to pass through, the tension screws (7) are passed through the fastening steel pipes (5) for tensioning and fixing, and after all the reinforcement structures of the template are accepted and qualified, the pouring of the shear wall (1) to be poured is prepared; S5. Pouring and curing: During the pouring process, the quality and speed of concrete should be controlled to ensure that the concrete is evenly and densely filled in the formwork cavity. After the pouring is completed, curing work should be carried out in time to ensure that the concrete reaches the designed strength; S6. Dismantling and reusing: After the curing strength is reached, the formwork and related accessories are dismantled. When dismantling, first loosen the reinforcement components on the outside of the shear wall, then take out the tension bolts (7) and the reinforcing steel pipes (3). After the concrete strength can ensure that its surface and edges are not damaged by demoulding, the end formwork (8) and side formwork (2) on the outside of the wall can be dismantled, and the dismantled formwork can be relocated to other locations for use; S7, repeat steps s2-s6 to construct another shear wall (1) to be cast.

7. The construction method of the shear wall formwork positive angle to negative angle structure according to claim 6 is characterized in that: In the step s2, the substrate is wetted after cleaning.

8. The construction method of the shear wall formwork positive angle to negative angle structure according to claim 6, characterized in that: The holes in step s4 are arranged at a spacing of 450 mm×450 mm, and the centers of the holes at the same elevation are on the same straight line.

9. The construction method of a shear wall formwork positive angle to negative angle structure according to claim 6, characterized in that: A sleeve is installed in the hole through which the reserved tension screw (7) passes.

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