JPS6278359A - Method and apparatus for vertically casting concrete - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vertical concrete pouring method and a pouring device for vertically pouring concrete onto independent pillars, walled pillars, etc. of tall buildings.

[Conventional technology]

Conventionally, when placing concrete for independent pillars or wall-mounted columns in buildings, a tremie pipe or a vertical casting pipe with a hopper attached to a wide sunny hose is used to prevent material separation due to falling concrete. .

[Problem that the invention seeks to solve]

However, when pouring concrete for the independent columns and columns with walls, the pouring pipe must be inserted through gaps between steel frames or reinforcing bars, so the pipe diameter is limited to a small diameter of about 4 inches.
In addition, since the concrete naturally falls inside the pipe, the pipe becomes clogged during pouring, and the pipe must often be pulled up midway through to remove the blockage, which is an inconvenience.

The present invention has been devised to solve the above-mentioned conventional problems, and its purpose is to use a relatively small-diameter vertical pouring pipe in vertical concrete pouring for high-story buildings. This vertical concrete pouring method allows for good concrete pouring without clogging the pipe during pouring, and also allows the length of the pouring tube to be adjusted according to the floor height in buildings with different floor heights. and to provide pouring equipment.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention places concrete vertically using a concrete vertical pouring device that has a concrete outflow hole at a predetermined location on the side of a vertical pouring pipe that vertically supplies concrete, and The vertically installed pipe is of a multi-stage connection type so that its length can be expanded and contracted.

[For production]

Therefore, in the present invention, the lower end of the vertical pouring pipe is inserted into the lower part of the pillar or the like to be poured, and concrete is poured from the upper end of the pipe. Therefore, the concrete first flows out from the opening at the bottom end of the pipe and is poured from the lower part of the pouring section, and when the pouring surface rises and the concrete reaches the position of the concrete outflow hole at the bottom of the pipe, it flows out from the outflow hole. Concrete flows out, and as the pouring surface rises, concrete gradually flows out from the outflow hole on the side of the upper pipe, and the pouring progresses. In this way, concrete is poured continuously without clogging the pouring pipe, and since the pouring pipe is always filled with concrete, the concrete does not separate.

Furthermore, by using multistage vertical casting pipes for floors with different floor heights, the length of the vertical casting pipe can be made to correspond to the floor height by increasing or decreasing the number of connected stages.

〔Example〕

The present invention will be explained in detail below based on illustrated embodiments.

The figure shows a state in which concrete pouring for the lower floor A has been completed and concrete pouring for the columns for the upper floor B has started, and a formwork 2 is assembled on the column 1 where concrete is to be poured. The vertical concrete pouring device 4 of the present invention is provided with a concrete outflow hole 6 at a predetermined location on the side of a vertical pouring pipe 5 that vertically supplies concrete, and the lower end of the vertical pouring pipe 5 has a large concrete outflow area. Although a hopper may be provided directly at the upper end of the vertical pouring pipe 5, it is preferable to connect a concrete flow pipe 8 through a bend pipe 7 as shown in the figure, and connect it to a concrete pump truck. Concrete will be pumped from (not shown).

The length of the vertical pouring pipe 5 is made approximately equal to the floor height of the building,
The concrete outflow hole 6 has an elliptical shape long in the axial direction, and a plurality of pipes are arranged at approximately equal intervals depending on the length of the vertical pouring pipe 5.

The illustrated example of vertical casting pipe 5 is designed so that the length of casting pipe 5 can be easily adapted to buildings with different floor heights by increasing or decreasing the number of connected casting pipes 5a of unit length. It is a multi-stage connection type, and one concrete outflow hole 6 is provided in each pouring pipe 5a.

In the above configuration, the vertical pouring pipe 5 is inserted from the upper part of the column 1 on which concrete is to be poured on the upper floor B to the lower part of the column 1 through the gap between the reinforcing bars 3, and the concrete is poured from the concrete pump truck or the like into the pouring pipe 8. The liquid is pumped through the vertical pouring pipe 5. The pumped concrete flows out from the diagonal opening 5b at the lower end of the vertical pouring pipe 5, and concrete is poured from the lower part of the column 1. When the pouring surface rises and reaches the position of the concrete outflow hole 6 at the bottom of the pipe, concrete flows out from the outflow hole 6, and as the pouring surface rises, concrete gradually flows out from the concrete outflow hole 6 at the upper stage. It flows out and pouring progresses. In this way, the concrete is poured for the column 1 of the floor B without clogging the pouring pipe.

When the pouring is completed, the vertical pouring pipe 5 is pulled out from the concrete, moved to another location, and the next column is poured with concrete.

〔Effect of the invention〕

As detailed above, according to the present invention, concrete is placed vertically using a concrete vertical placing device that has concrete outflow holes at predetermined locations on the side of a vertical pouring pipe that supplies concrete vertically. Therefore, even if a relatively small-diameter pouring pipe is used, the vertical pouring pipe will not be clogged with concrete and concrete will be poured continuously, and since the pouring pipe is always filled with concrete, there will be no separation of concrete. can avoid.

In addition, by using multi-stage connected vertical pipes for floors with different floor heights, the length of the vertical pipe can be easily adjusted to match the floor height by increasing or decreasing the number of connected stages. It has the following.

[Brief explanation of drawings]

The drawings are diagrams showing a vertical concrete pouring method using an embodiment of the present invention. 4... Concrete vertical pouring device, 5... Vertical pouring pipe, 6... Concrete outflow hole.

Claims (4)

[Claims] (1) Concrete vertical pouring method in which concrete is poured vertically and placed, characterized in that concrete is poured through a vertical pouring pipe with concrete outflow holes provided at predetermined locations on the side of the pipe. Pouring method. (2) The vertical concrete pouring method according to claim 1, wherein the vertical pouring pipe is of a multi-stage connection type so that its length can be expanded and contracted. (3) A vertical concrete pouring device for pouring and pouring concrete vertically, characterized in that a concrete outflow hole is provided at a predetermined location on the side of a vertical pouring pipe that supplies concrete vertically. pouring equipment. (4) The vertical concrete pouring device according to claim 3, wherein the vertical pouring pipe is of a multi-stage connection type so that its length can be expanded and contracted.