Construction method of reinforced concrete structures

Abstract

The present invention relates to a method of constructing the formwork for the walls and roof of a reinforced concrete structure in the manner used for constructing the walls, ceilings, and roofs of Western-style wooden houses, and then reusing the formwork as part of interior woodworking without dismantling it.

Description

Technology Field

[65535] The present invention relates to a construction method for a reinforced concrete structure using wooden formwork that can replace the gang formwork used when creating the framework of a reinforced concrete structure, specifically the wooden work that forms the framework and walls in the formwork work for creating the framework of the reinforced concrete structure. Background Technology The technology underlying this invention is a timber work technique for forming the framework and walls when constructing a Western-style wooden house, and it is a timber formwork technique that can replace the gang formwork used to create the framework of a reinforced concrete structure. The problem to be solved Conventional formwork used when constructing the framework of reinforced concrete structures results in frequent work injuries and prolonged construction periods due to the heavy weight of the tool called a gang form. In addition, after completing the reinforced concrete framework using the gang form, the need to separate and move it causes inconvenience, danger, and excessive costs. means of solving the problem The present invention relates to a method for constructing a framework for a reinforced concrete structure, wherein the framework for the walls and roof of a building is constructed in the manner used for constructing the walls, ceilings, and roofs of Western-style wooden houses, and the framework is not dismantled after pouring ready-mix concrete but is directly connected to and used for interior woodworking within the building. By doing so, the formwork for reinforced concrete can be performed without dangerous gang form work, and the reinforced concrete framework is constructed by pouring ready-mix concrete using the formwork. Since the wooden formwork is not removed separately but can be used directly for interior woodworking, costs can be saved, risks can be reduced, and the construction period can be shortened. The present invention relates to a construction method for wooden formwork for forming the inner walls and ceilings of a reinforced concrete structure, comprising the steps of: (a) forming a wall and ceiling wooden frame by combining a lower horizontal member (3), a vertical member (1), an upper horizontal member (4), and a joist (5), and forming an inner wooden frame by attaching a plywood (2) to one side of the wooden frame; (b) a step of arranging reinforcing bars (9) on the outer side of the inner wooden formwork and forming a ready-mix concrete pouring space (11) between the spaced inner wooden formworks, between the spaced outer wall gang form (10), and on the ceiling; (c) a step of pouring ready-mix concrete into the ready-mix concrete pouring space (11); and (d) a step of dismantling the outer wall gang form (10) after the ready-mix concrete has cured, while leaving the inner wooden formwork intact to be used as a frame for interior finishing; the present invention provides a method for constructing a reinforced concrete structure characterized by including these steps. Furthermore, the present invention is characterized by joining a joist blocking (6) between the joists (5) in step (a). Furthermore, the present invention is characterized by joining an opening head (7) to the top of the opening of the inner wooden formwork in step (a). Effects of the invention In the woodworking for creating the framework of a reinforced concrete structure, when the work is performed in the manner of the present invention, compared to the method of disassembling and moving the reinforced concrete formwork after the concrete has hardened, as is the case when using a gang form for formwork, time, cost, and work risks can all be reduced, and at the same time, some of the indoor woodworking can be done in advance. Brief explanation of the drawing Figure 1 is an overall view showing the reinforcement arrangement, inner timber formwork, and gang form installed for pouring ready-mix concrete in a reinforced concrete structure. Figure 2 shows the shape of the wall timber frame that forms the shape of the reinforced concrete structure. Figure 3 shows the shape of the inner timber formwork that forms the shape of the reinforced concrete structure. Figure 4 shows the shape of the inner timber formwork for the wall and ceiling that forms the shape of the reinforced concrete structure. Figure 5 shows the shape of the opening head connected to the inner timber formwork of the wall. Figure 6 shows the shape of the inner timber formwork of the ceiling. Figure 7 shows the relationship between the inner timber formwork of the wall and ceiling. Figure 8 shows the relationship between the inner timber formwork of the wall and ceiling. Specific details for implementing the invention The present invention relates to a method for constructing walls, roofs, and ceilings of a reinforced concrete structure, in which wooden formwork for the walls, ceilings, and upper floors is performed along with the reinforcement work, and ready-mix concrete is poured in that state, thereby curing the framework of the building into reinforced concrete, and the wooden formwork is left as is and used for interior design work. Therefore, there is no need to perform a separate work to separate the wooden formwork. The present invention is specifically explained with reference to FIGS. 1 to 8. Step (a), which is the step of forming the inner wooden formwork, involves vertically setting up a plurality of vertical members (1) on a lower horizontal member (3) that constitutes the wall frame in a Western-style wooden house and combining them with the upper horizontal member (4) to form a wall wooden frame. The upper surface of the upper horizontal member (4) is joined by the ends of the joists (5) that form the ceiling or upper floor frame in a Western-style wooden house, and the joist blocking (6) is joined between the joists (5) to form the inner wooden frame of a grid-type reinforcing structure for the construction of the ceiling or upper floor. The plywood (2), which forms the outer surface of the exterior wall in a Western-style wooden house, is attached to the outer surface of the inner wooden formwork to form the ready-mix concrete pouring surface of the inner wooden formwork, and a waterproof member (8) for blocking moisture during ready-mix concrete pouring is attached to the outer surface of the plywood (2) to ensure watertightness. In addition, as shown in FIG. 2, a plurality of the vertical members (1) and the upper horizontal members (4) are combined with the lower horizontal member (3) as a starting point in the inner wooden formwork to support the load and lateral pressure during concrete pouring, and the opening head (7) can be constructed to be integrated at the top of the opening. FIG. 3 shows the state in which the wall of the inner wooden formwork is formed by attaching the plywood (2) to the outer surface of the vertical member (1), and the joist (5) is connected across the top of the upper horizontal member (4). In addition, it can be seen that the vertical member (1) is constructed as a partition wall of the finishing frame.In FIG. 4, the joists (5) are joined across the upper horizontal member (4), and the joist blocking (6) is joined between the joists (5), and the plywood (2) is attached thereon. The vertical member (1) is constructed as a partition wall of the finishing frame, and the vertical member (1), which is composed of a partition wall, also serves to support the joists (5) that are the ceiling. In step (b), the step of forming the rebar placement and pouring space, rebar (9) is placed on the outside of the plywood (2) of the inner wooden formwork, and the outer wall gang form (10) is installed at a position spaced apart from the inner wooden formwork at a certain distance to form the ready-mix concrete pouring space (11) between them, and the ready-mix concrete pouring space (11) is formed between the spaced inner wooden formworks and on the ceiling. In addition, a waterproofing member (8) can be installed on the outer surface of the plywood (2). In step (c), the ready-mix concrete pouring step, ready-mix concrete is poured into the ready-mix concrete pouring space (11) and cured for a certain period. At this time, the opening head (7) and the joist blocking (6) support the load of the poured ready-mix concrete while increasing the structural rigidity of the inner wooden formwork. In step (d), the curing and finishing utilization step of the inner wooden formwork, the outer wall gang form (10) is dismantled after the ready-mix concrete is cured, but the inner wooden formwork is not dismantled and remains. At this time, the gap space between the vertical members (1) or joists (5) that are preserved in the state where the inner wooden formwork was constructed is preserved in an exposed and open state indoors and is converted into a finishing subframe to fix interior finishing materials according to the Western-style wooden house construction method. FIG. 5 is a photograph showing the wall of the inner wooden formwork remaining after the concrete pouring in FIG. 1, viewed from inside. It shows a state in which a vertical member (1), an upper horizontal member (4), and an opening head (7) form a finishing frame on the opposite side of the plywood (2) on the concrete pouring surface, and the gap space between each of the vertical members (1) is exposed and preserved in an open state, and each member is joined by a fastening means such as a nail to form the finishing frame.FIG. 6 is a photograph showing the inner wooden formwork of the ceiling remaining after the ready-mix concrete was poured in FIG. 1, viewed from inside. The gaps between each joist (5) are exposed and open, and the inner wooden formwork, which is composed of the joists (5), joist blocking (6), and plywood (2), can be seen to have been converted into the finished underframe state. The grid-shaped wooden frame of the inner wooden formwork of the present invention and the plywood (2) attached to one side of its outer surface distribute and support the load and lateral pressure during ready-mix concrete pouring, and the structure in which the ends of the joists (5) are connected by crossing over the upper horizontal member (4) allows the ready-mix concrete load to be directly transferred to the vertical member (1). The opening head (7) and the joist blocking (6) suppress twisting and central sagging of the inner wooden formwork during ready-mix concrete pouring, and the opening head (7) also simultaneously performs the function of protecting the opening components below it. The connection between the components is made using conventional wood joining materials such as nails, hardware, or anchors according to the Western-style wooden house construction method shown in each drawing, thereby enabling the inner wooden formwork of the present invention to engineer the function of a formwork that withstands the load and lateral pressure generated during ready-mix concrete pouring, and the function of a finishing subframe after curing. Industrial applicability The present invention can replace the existing gang form method by providing a safer, easier, and cheaper method for formwork, thereby replacing the formwork framework work using heavy gang forms at construction sites such as existing multi-unit buildings or apartments. Explanation of the symbols 1 : Vertical member 2 : Plywood 3 : Lower horizontal member 4 : Upper horizontal member 5 : Joist 6 : Joist blocking 7 : Opening head 8 : Waterproofing member 9 : Rebar 10 : Exterior wall gang form 11 : Ready-mix concrete pouring space

Claims

Claim 1 A method for constructing a wooden formwork for forming the inner walls and ceiling of a reinforced concrete structure, comprising: (a) forming a wall and ceiling wooden frame by combining a lower horizontal member (3), a vertical member (1), an upper horizontal member (4), and a joist (5), and forming an inner wooden frame by attaching a plywood (2) to one side of the wooden frame; (b) arranging reinforcing bars (9) on the outer side of the inner wooden frame and forming a ready-mix concrete pouring space (11) between the spaced inner wooden frames, between the spaced outer wall gang form (10), and on the ceiling; (c) pouring ready-mix concrete into the ready-mix concrete pouring space (11); and (d) dismantling the outer wall gang form (10) after the ready-mix concrete has cured, while leaving the inner wooden frame intact to be used as a frame for interior finishing. Claim 2 A method for constructing a reinforced concrete structure according to claim 1, characterized by combining joist blocking (6) between the joists (5) in step (a). Claim 3 delete Claim 4 A method for constructing a reinforced concrete structure according to claim 1, characterized by attaching an opening head (7) to the top of the opening of the inner wooden frame in step (a). Claim 5 delete

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