Concrete placing method

Abstract

To provide a pressure feeding technique capable of maintaining quality without interfering with a reinforcing bar and a form by lifting a pressure feeding pipe by a crane, since there is a regulation for placing ready-mixed concrete within a limited time in concrete placing work.SOLUTION: In the concrete placing method, rubber hoses 2A and 2B are connected to both ends of a suspension pipe 10 to which a plurality of pressure feed pipes 1 are connected, one rubber hose 2A of the suspension pipe 10 is connected to a pressure feed pipe 12 from a pump vehicle on the ground, and the other rubber hose 2B is discharged toward a place to be placed, and the suspension pipe 10 is lifted by using a crane 30 for lifting materials installed on the site, and is freely moved and pressure-fed in a suspended state to prevent interference with a reinforcement and a form.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a concrete pouring method and a concrete pouring device. [Background technology]

[0002] When pouring concrete, the pressure pipes on the floor are supported by supports to set up the pressure pipe route so as not to damage the finished rebar and formwork. However, with this method, every time the pipe route needs to be changed, the pressure must be stopped, the pressure pipe connection must be disconnected, and a different route must be reconnected manually. After disconnection, the concrete remaining in the pressure pipe during pumping must be discharged before reconnection, and the discharged concrete must be disposed of before it hardens. [Prior art documents]

[0003] [Patent Document 1] Published 2022-92262 [Patent Document 2] Hei 03-017355 Summary of the Invention [Problem to be solved by the invention] In concrete pouring work, there is a rule that ready-mixed concrete must be poured within a limited time, and to provide a pressure-feeding technology that lifts pressure-feeding piping with a crane, does not interfere with reinforcing bars and formwork, and can maintain quality. [Means for solving the problem]

[0004] The concrete pouring method of the present invention involves connecting rubber hoses to both ends of a hanging pipe (10) which is made up of multiple pressure pipes (1), connecting the rubber hose (2A) at one end to a pressure pipe (12) from a pump truck on the ground, and discharging the other rubber hose (2B) toward the pouring location.The hanging pipe (10) is lifted using a material lifting crane (30) installed on site, and can be moved freely to pressure-feed while suspended, without interfering with reinforcing bars or formwork.

[0005] A concrete pouring method in which a shock absorber (5) is provided on an arm (6) provided at the end of a hanging pipe (10) on the side of a pressure pipe (12) from a pump vehicle, and the hanging part of a rubber hose (2A) is suspended by a protective frame (7), thereby suppressing pulsation during pressure feeding and suppressing deformation and deterioration of the rubber hose (2A). [Effects of the Invention]

[0006] This eliminates the time required to change routes when pouring concrete and to relocate pressure pipes, thereby shortening the time required to pour concrete.

[0007] Since the assembled rebar and formwork do not interfere with the pressure pipes, there is no need for rework, and concrete can be poured while maintaining quality.

[0008] The structure, which has hanging hardware attached to existing pressure pipes, is easy to assemble and disassemble on-site, and costs can be reduced by using a crane for lifting materials that is already installed on-site. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram of an elevation of the construction status according to the first, second, and third embodiments. [Figure 2] FIG. 1 is a partially imaginary plan view of on-site construction according to the first, second, and third embodiments. [Figure 3] FIG. 11 is a diagram showing the configuration of the pump car side of the hanging pipe according to the third embodiment. [Figure 4] FIG. 10 is a partially imaginary cross-sectional view of a hanging fitting of a hanging pipe according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] FIG. 1 shows an elevation view illustrating the relationship between equipment in on-site construction using the concrete pouring method of the present invention, and FIG. 2 shows a plan view. Figures 1 and 3 are structural diagrams of the elevation with shock absorbers installed to suppress pulsation, and Figure 4 is a partial cross-sectional view showing the hanging fittings and hanging wires of the hanging pipe.

[0011] A first embodiment of the concrete pouring method of the present invention is shown in FIGS. 1, 2 and 4. A concrete pouring method in which lifting fittings 4 with rubber plates 13 attached to the inside are attached to both ends of a suspension pipe 10 which connects pressure pipes 1A, 1B, 1C with connecting fittings 3, a rubber hose 2A which is connected to pressure pipe 12 from a pump truck is connected to the suspension pipe 10, a rubber hose 2B is connected to the other suspension pipe 10, and the suspension pipe is lifted up by a crane 30 for lifting materials installed at the site using lifting wires 9A, 9B, and the rubber hose 2B is moved to a desired position to dispense concrete.

[0012] A second embodiment of the concrete pouring method of the present invention is shown in FIGS. This concrete pouring method attaches a shock absorber 5 to a hanging fixture 4A provided at the end of a hanging pipe 10 on the side of a pressure pipe 12 from a pump truck, and hangs the shock absorber 5 using a wire 9B, absorbing pulsation during pressure feeding and suppressing movement of the hanging pipe 10 and rubber hose 2A.

[0013] A third embodiment of the concrete pouring method of the present invention is shown in FIGS. An arm 6 with a shock absorber 5 attached is provided on a hanging fitting 4B provided at the end of the hanging pipe 10, and a protective frame 7 is provided near where the rubber hose 2A connected to the pressure pipe 12 connects to the hanging pipe 10 to suppress deformation caused by the weight and pulsation of fresh concrete, and the protective frame 7 is suspended by the shock absorber 5, thereby suppressing deformation and deterioration of the rubber hose 2A. [Explanation of symbols]

[0014] 1A, 1B, 1C... Pressure pipe, 2A, 2B... Rubber hose, 3···Connecting fittings, 4A, 4B···Hanging fittings, 5. Shock absorber, 6. Arm, 7 Protective frame, 9A, 9B Hanging wire, 10: Hanging piping, 12: Pressure transfer piping on the pump vehicle side, 13 Rubber plate, 30 Crane, 31... Scaffolding, 40... Floor, 41. Ready-mix concrete,

Claims

1. A concrete pouring method in which a lifting pipe (10) is connected to a plurality of pressure pipes (1) for pressure-feeding ready-mixed concrete (41), and lifting fittings (4A) are provided near both ends of the lifting pipe (10), and the lifting pipe (10) is lifted by a crane (30) using two lifting wires (9A). A rubber hose (2A) connected to a pressure pipe (12) from a pump truck is connected to one side of the lifting pipe (10), and ready-mixed concrete (41) is discharged at a desired position from a rubber hose (2B) connected to the other side, and the concrete pouring method is characterized by using a crane for lifting materials installed at the site.

2. 2. The concrete pouring method according to claim 1, wherein a shock absorber (5) is provided on the pressure-transfer pipe (12) side of the hanging fitting (4A) attached to the hanging pipe (10) to which a plurality of the pressure-transfer pipes (1) are connected, and the shock absorber (5) is provided to suppress pulsation of the rubber hose (2A) caused by pressure changes during pressure-transfer by hanging with a hanging wire (9B).

3. 2. The concrete pouring method according to claim 1, wherein an arm (6) is provided on a hanging fitting (4B) attached to the pressure pipe (12) side of the hanging pipe (10) to which a plurality of pressure pipes (1) are connected, the shock absorber (5) is attached to the tip of the hanging fitting, and a protective frame (7) is provided near the connection portion of the rubber hose (2A), and the rubber hose (2A) is hung by the shock absorber (5), suppressing pulsation of the rubber hose (2A) during pressure feeding, and the protective frame (7) suppresses deterioration of the rubber hose (2A).

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