JPH09317178A - Measuring method of upper surface position of casting concrete, measuring pipe used therefor and measuring device of upper surface position of casting concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily place concrete with high degree of accuracy. SOLUTION: A pipe-like measuring pipe 10 with the opened upper end and an expansible inside space S2 is extended up and down and is provided in a concrete casting space S1, and after the measuring pipe 10 is filled with liquid 20, concrete 3 is placed in placed in the concrete casting space S1, part of the inside space S2 of the measuring pipe 10 buried into the concrete 3 is closed with pressure of the concrete 3. By the constitution, the upper surface position P of casting concrete is measured on the basis of a leaking amount of the liquid 20 from the upper end of the measuring pipe 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring a pouring concrete top end position for measuring the pouring concrete top end position in the process of pouring concrete in a concrete pouring space, and a measurement used in the measuring method. The present invention relates to a pipe and a measuring device for the top position of cast concrete.

[0002]

2. Description of the Related Art In the process of placing concrete, the position of the top end of the placed concrete has been conventionally measured in order to perform the concrete placing with high accuracy. In particular, when the top of cast concrete is invisible, it is inevitable to measure the top position.

The measurement of the top position of the poured concrete is
Conventionally, in almost all cases, the weight is attached to the verification rope and hung down so that the weight reaches the top of the cast concrete.

[0004]

However, in such conventional measurement of the position of the top of the poured concrete, the confirmation of the arrival of the weight at the top of the poured concrete relies on the intuition of a skilled worker, The confirmation work was difficult. Moreover, since it is difficult to simultaneously measure the position of the top of the placed concrete and place the concrete at the same time, the placing work is delayed.

The present invention provides highly accurate concrete pouring.
A method for measuring the position of the top of a poured concrete that can be easily and quickly performed, a measuring pipe used for the measuring method,
It is also an object of the present invention to provide a measuring device for the top position of the poured concrete.

[0006]

Means for Solving the Problems The first invention of the present invention is:
In the method of measuring the pouring concrete top end position, which measures the pouring concrete top end position in the process of pouring concrete into the concrete pouring space, the concrete pouring space has an open upper end and a closed lower end. , The internal space of which expands and closes a measuring tube that can be expanded and closed,
The measuring pipe is filled with liquid, then concrete is poured into the concrete pouring space, and the internal space of the part of the measuring pipe that is buried in the concrete is closed by the pressure of the concrete. The top position of the placed concrete is measured based on the amount of liquid flowing out from the upper end of the.

That is, at the same time as pouring concrete, the top position of the pouring concrete can be measured immediately, and
After installing the measuring pipe in the concrete pouring space and filling the measuring pipe with liquid, the simple work of measuring the pouring concrete top end position based on the amount of liquid flowing out from the upper end of the measuring pipe. It is possible to detect the top position of the poured concrete.

A second invention of the present invention is a measuring pipe used in the method for measuring the top position of a cast concrete of the first invention, and has a fold portion which becomes a fold when the internal space is expanded and closed. It is characterized by That is, it is possible to close the internal space more tightly by the pressure of the poured concrete.

A third aspect of the present invention is a casting concrete top position measuring device for measuring the pouring concrete top position in the process of placing concrete in the concrete pouring space, wherein the upper end is opened. , The lower end is closed, the inner space is expanded and closed freely, and the measuring pipe is provided vertically extending in the concrete placing space, the liquid filled in the measuring pipe, and the upper end of the measuring pipe. And a display unit for displaying the liquid amount measured by the liquid amount measuring unit by converting the liquid amount measured by the liquid amount measuring unit into the pouring concrete top end position. And

That is, after the measuring pipe is installed in the concrete pouring space and the measuring pipe is filled with the liquid, the liquid amount measuring means measures the amount of the liquid flowing out from the upper end of the measuring pipe,
Since the display means converts the amount of liquid measured by the liquid amount measuring means into the pouring concrete top end position and displays it, the worker can display the pouring concrete top end position by a simple operation of monitoring the display. It is possible to detect immediately when the concrete is poured.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an excavation hole 1 forming a concrete placing space S1 is formed in the ground G, and the excavation hole 1 has a shape for forming an underground continuous wall. Muddy water 2 is stored in the digging hole 1, and a tremie pipe 5 for placing concrete 3 is installed in the digging hole 1.

A measuring device 10 for measuring the position of the top of the poured concrete according to the first embodiment of the present invention is provided around the drill hole 1 and its surroundings.
0 is provided.

Measuring device 10 for pouring concrete top position
In 0, the upper end is open, the lower end is closed, and the internal space S2 has a tubular shape that can be expanded and closed, and the measurement pipe 10 is provided so as to extend vertically in the concrete pouring space S1.
A liquid 20 filled in the measuring pipe 10, a liquid amount measuring means 30 for measuring the amount of the liquid 20 flowing out from the upper end of the measuring pipe 10, and a liquid 20 measured by the liquid amount measuring means 30.
The display means 40 for converting the amount of the above into the pouring concrete top end position P and displaying it.

The measuring pipe 10 is a circular pipe as shown in FIG. 2, and has a fold portion 11 which is a fold when the internal space S2 is expanded and closed. The folds 11 project outward of the measuring tube 10, are formed to extend in the extending direction of the measuring tube 10, and three convex folds 12, 12 are provided around the measuring tube 10 at equal intervals. 12 and the inner surface of the measurement tube 10, the three fold groove-shaped folds 13, 13, which are provided in the middle of the adjacent convex folds 12, 12 and extend in the extending direction of the measurement tube 10, respectively. It consists of 13.

The liquid 20 is a liquid having a specific gravity of 2 or more muddy water.

The liquid amount measuring means 30 shown in FIG. 1 is, for example, a connecting pipe 31 which is connected to the upper end of the measuring pipe 10 and is connected to the connecting pipe 31, detects the flow rate of the liquid 20, and detects the detected liquid. A flow meter 32 for sequentially outputting the flow rates of 20 to the display means 40 is provided. The flow meter 32 is installed on the ground.

The display means 40 is a so-called personal computer installed on the ground, is communicatively connected to the flow meter 32, and is based on the flow rate of the liquid 20 from the flow meter 32.
The pouring concrete top end position P is sequentially calculated and detected, and for example, the pouring concrete top end position P is shown, such as line graph image information where the vertical axis is the pouring concrete top end position P and the horizontal axis is elapsed time. A computer main body 41 for generating image information, a display 42 for displaying an image showing a real-time pouring concrete top end position P such as the line graph based on the image information, and a keyboard connected to the computer main body 41. 43 and.

Further, the computer main body 41 has an external storage device (not shown), and sequentially calculates and calculates the pouring concrete top end position P based on the flow rate of the liquid 20 from the flow meter 32. However, a series of processes for generating image information indicating the pouring concrete top end position P, such as line graph image information with the vertical axis representing the pouring concrete top position P and the horizontal axis representing the elapsed time, is stored in the external storage device. This is performed by executing the stored program. In this program, based on the flow rate of the liquid 20 from the flow meter 32 and the shape information of the concrete pouring space S1 input at the time of execution, the pouring concrete amount is sequentially calculated and detected, and the pouring concrete amount is calculated. Based on this, the pouring concrete top end position P is successively calculated and detected.

A method of measuring the pouring concrete top end position using the pouring concrete top end position measuring device 100 will be described below.

First, the measuring pipe 10 is vertically extended and installed in the concrete placing space S1 of the excavation hole 1 in which the muddy water 2 is stored, and the measuring pipe 10 is filled with the liquid 20.
When the measuring tube 10 is installed so as to extend vertically, it is preferable to attach a weight to the lower end of the measuring tube 10 in order to prevent the measuring tube 10 from bending and bending.

Further, a liquid amount measuring means 30 and a display means 40 communicatively connected to the liquid amount measuring means 30 are installed on the ground portion around the drill hole 1, and a connecting pipe 31 of the liquid amount measuring means 30 is provided.
And the measuring tube 10 are connected. In the display means 40 which is a personal computer, the pouring concrete top end position P is sequentially stored on the basis of the flow rate of the liquid 20 stored in the external storage device (not shown) and input from the flow meter 32.
A program that performs a series of processes for detecting and calculating and generating image information indicating the pouring concrete top end position P, such as line graph image information in which the vertical axis is the pouring concrete top end position P and the horizontal axis is the elapsed time. Run.

Then, the pouring of the concrete 3 into the concrete pouring space S1 is started using the tremie pipe 5.

Then, the measuring pipe 10 is gradually buried in the cast concrete 3 from its lower end upward. In the measuring pipe 10, the internal space S2 of the portion buried in the concrete 3 is closed by the pressure of the concrete 3, so that the liquid 20 in the closed internal space S2 is pushed upward, From the upper end of 10 through the connecting pipe 31 of the liquid amount measuring means 30 to the flow meter 32.

Then, the flow meter 32 detects the flow rate of the liquid 20 and sequentially outputs the detected flow rate of the liquid 20 to the display means 40. Then, the computer main body 41 of the display means 40 sequentially calculates and detects the pouring concrete top end position P based on the flow rate of the liquid 20 input from the flow meter 32, and displays an image showing the pouring concrete top end position P. Based on the image information, the display 42 generates real-time pouring concrete top end position such as a line graph image in which the vertical axis is the pouring concrete top end position P and the horizontal axis is the elapsed time based on the image information. An image showing P is displayed.

Therefore, the worker can perform the simple work of observing the display of the display means 40 to set the pouring concrete top end position P.
Therefore, it is possible to detect the pouring concrete top end position P more easily than before.
Further, at the same time as the pouring of the concrete 3, the concrete pouring is adjusted on the basis of the pouring concrete top position P which is immediately detected, so that highly accurate concrete pouring can be easily performed.

Since the pouring concrete top end position P can be measured at the same time when the concrete 3 is poured, the concrete can be quickly poured.

Further, as shown in FIG.
The projecting folds 12, 12, 12 which are projected outward of the measuring tube 10, are formed to extend in the extending direction of the measuring tube 10, and are provided around the measuring tube 10 at three equal intervals. On the inner surface of 10, there are three ridged groove-like folds 13, 13, 13 which are respectively provided in the middle of the adjacent convex folds 12, 12 and extend in the extending direction of the measuring tube 10. As shown in FIG. 3, when each of the convex folds 1 is buried in the cast concrete 3 and the pressure thereof is applied.
The grooves 12, 13 and 13 and the groove-shaped folds 13, 13, 13 serve as folds, and the groove-shaped folds 13, 13, 13 are folded inwardly toward each other. Therefore, the internal space S2 of FIG. 2 can be closed more closely as shown in FIG. 3, so that the liquid 20 can be prevented from remaining in the closed portion shown in FIG. Therefore, the measurement accuracy can be improved.

In the above embodiment, the concrete 3
Although the measuring pipe 10 is pulled out from the concrete 3 after the pouring of is completed, the measuring pipe 10 may be buried. In the case of burying, it is preferable to fix the measuring tube 10 in advance with a rebar cage or the like.

In the above embodiment, the measuring tube 10
The measurement tube 50 of FIGS. 4 and 5, the measurement tube 60 of FIGS. 6 and 7, or the measurement tube 60 of FIGS. 8 and 9 may be replaced.

The measuring tube 50 shown in FIG. 4 is a tube having a rectangular horizontal cross section, and the projections formed at the central portions of the four surfaces thereof project outward of the measuring tube 50 and extend in the extending direction of the measuring tube 50. 5 has a curved fold portion 52, 52, 52, 52, and the convex fold portion 52, 52, 52, 52 and the four corner portions 53, 53, 53, 53 serve as a fold line, and FIG. As shown, the corners 53, 53, 53, 53 are folded inward so as to approach each other, and the internal space S22 of FIG. 4 is closed.

The measuring tube 60 shown in FIG. 6 is a tube having an elliptical horizontal cross section, and both ends in the major axis direction of the measuring tube 60 are projected to the outside of the measuring tube 60 and formed to extend in the extending direction of the measuring tube 60. 7, the inner space S32 of FIG. 6 is closed by using the convex folds 62, 62 as folds.

The measuring tube 70 shown in FIG. 8 is a tube having a horizontal cross section, and the three corners thereof are formed so as to project outward from the measuring tube 70 and extend in the extending direction of the measuring tube 70. It has convex folds 72, 72, 72, and as shown in FIG. 9, the convex folds 72, 72, 72 and the central portions 73, 73, 73 of the three sides serve as folds, and Fold the central parts 73, 73, 73 inwardly toward each other,
The internal space S42 of FIG. 8 is closed.

Further, the measuring device 100 for measuring the top position of the pouring concrete in FIG. 1 is not limited to the pouring of underground concrete, but as shown in FIG. 10, such as the caisson on-site pouring at the bottom O1 of the sea O. Needless to say, it may be used for pouring the underwater concrete 4, and in this case, the measuring device 100 for the pouring concrete top end position is installed on the hull 80.

In the above embodiment, as shown in FIG.
As an example of the liquid amount measuring means 30, a flow meter 32 for measuring the volume of the liquid 20 flowing out from the upper end portion of the measuring tube 10 per fixed time was used, and a so-called personal computer was used as the display means 40. The liquid 20 flowing out from the upper end of 10 may be stored in a liquid tank (not shown), this liquid tank may be used as a flow rate measuring means, and the scale applied to this liquid tank may be used as the display means.

In the above embodiment, the volume of the liquid 20 is measured, and the pouring concrete top end position P is measured on the basis of this volume. A weighing machine (not shown) provided in a tank (not shown) and a liquid tank is used to measure the weight of the liquid 20 with this weighing machine, and the display means 40 displays the pouring concrete top end position based on this weight. The P may be measured and displayed.

[0036]

According to the method for measuring the top position of the poured concrete according to the first aspect of the present invention, since the position of the top end of the poured concrete can be measured immediately at the same time as the pouring of the concrete, it is possible to obtain a highly accurate concrete. Casting can be done quickly.

Further, a measuring pipe is installed in the concrete pouring space, and after filling the measuring pipe with liquid, the amount of liquid flowing out from the upper end of the measuring pipe is measured by a simpler work than in the conventional method. Since the top position of the installed concrete can be detected, the top position of the placed concrete can be detected more easily than in the conventional case. As a result, it is possible to easily perform highly accurate concrete pouring.

According to the measuring pipe of the second aspect of the present invention, the blockage of the internal space due to the pressure of the cast concrete is prevented.
Since it can be performed more closely, it is possible to prevent the liquid from remaining in the closed portion. Therefore, the measurement accuracy can be improved.

According to the pouring concrete top end position measuring device of the third invention of the present invention, the pouring concrete top end position can be immediately measured simultaneously with the pouring of concrete, as in the first invention. Highly accurate concrete pouring can be done quickly.

Further, since the worker can detect the pouring concrete top end position by a simple work of monitoring the display of the display means, the detection of the pouring concrete top end position is increased to the first invention. Can be done easily.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a measuring device for a top position of a poured concrete of the present invention.

FIG. 2 is a horizontal cross-sectional view showing a first embodiment of a measuring pipe of the measuring device for the pouring concrete top end position of FIG. 1, showing a state in which the internal space of the measuring pipe is expanded.

FIG. 3 is a view showing a state in which the internal space is closed in the measuring tube of FIG.

FIG. 4 is a horizontal cross-sectional view showing a second embodiment of the measuring pipe of the measuring device for the top position of the poured concrete in FIG. 1, showing a state in which the internal space of the measuring pipe is expanded.

5 is a view showing a state in which the internal space is closed in the measuring tube of FIG.

FIG. 6 is a horizontal cross-sectional view showing a third embodiment of the measuring pipe of the measuring device for the top position of the poured concrete in FIG. 1, showing a state in which the internal space of the measuring pipe is expanded.

7 is a diagram showing a state in which the internal space of the measuring tube of FIG. 6 is closed.

FIG. 8 is a horizontal cross-sectional view showing a fourth embodiment of the measuring pipe of the measuring device for the top position of the poured concrete in FIG. 1, showing a state in which the internal space of the measuring pipe is expanded.

9 is a view showing a state in which the internal space is closed in the measuring tube of FIG.

FIG. 10 is a diagram in which the measuring device of the pouring concrete top position of FIG. 1 is used for underwater concrete pouring.

[Explanation of symbols]

 3 Concrete 4 Underwater Concrete (Concrete) 10 Measuring Pipe 11 Fold 20 Liquid 30 Liquid Volume Measuring Means 40 Display Means 50 Measuring Pipe 52 Convex Fold (Fold) 60 Measuring Pipe 62 Convex Fold (Fold) 70 Measurement Pipe 72 Convex crease (crease) 100 Measuring device for pouring concrete top position S1 Concrete pouring space S2 Internal space S22 Internal space S32 Internal space S42 Internal space P Placing concrete top position

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiji Fukuda 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation

Claims (3)

[Claims] 1. A method of measuring a pouring concrete top end position for measuring the pouring concrete top end position in the process of pouring concrete into the concrete pouring space, wherein an upper end is opened in the concrete pouring space. , The lower end is closed, and the inner space is provided with a measuring pipe that can be expanded and closed freely extending vertically, the liquid is filled in the measuring pipe, and then the concrete is poured into the concrete placing space, Of the measuring pipe, the internal space of the portion buried in the concrete is closed by the pressure of the concrete, based on the amount of the liquid flowing out from the upper end of the measuring pipe, the poured concrete A method for measuring the top position of a poured concrete, which comprises measuring the top position. 2. A measuring pipe used in the method for measuring the top position of a poured concrete according to claim 1, characterized in that it has a fold portion which becomes a fold when the internal space is expanded and closed. tube. 3. A measuring device for a pouring concrete top end position for measuring the pouring concrete top end position in the process of pouring concrete in a concrete pouring space, wherein an upper end is opened and a lower end is closed, The internal space has a tubular shape that can be expanded and closed, and the measurement pipe provided to extend vertically in the concrete placing space, the liquid filled in the measurement pipe, and the liquid flowing out from the upper end portion of the measurement pipe. A liquid amount measuring unit that measures the amount of the liquid; and a display unit that displays the amount of the liquid measured by the liquid amount measuring unit after converting it into the pouring concrete top position. Measuring device for the top position of cast concrete.