JPH093895A - Device for controlling penetration amount of pile driving - Google Patents

Abstract

PURPOSE: To automatically measure amounts of penetration of pile driving at a place remote from a site by a method wherein distance of a target prism on a pile driving head is measured by an electronic distance meter and distance data is computed by an operation means to record the computation by means of an operation result record means. CONSTITUTION: After connecting a pile 1 to the lower part of a pile driving head 3 suspended by a crane of a base machine 2, the pile 1 is forced into the ground E by the driving action of the head 3. And as the head 3 is lowered, an electronic distance meter 7 directs its projecting.receiving face toward a target prism 6 disposed on the head 3 to successively measure oblique distances, vertical angles, and horizontal angles during the time from the start of driving of the head until the completion thereof. And data measured by the meter 7 is sent to the base machine 2 and inputted into a receiver 9 of a personal computer 8. Further the personal computer 8 computes penetration depth of the pile 1 to display the result of computation on a display 8b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management device for automatically recording a pile penetration amount.

[0002]

2. Description of the Related Art In pile driving work, by measuring the penetration amount of each pile, it is possible to control the actual driving depth with respect to the design depth, driving speed, and work efficiency. Also, due to the difference in the driving speed of each pile, it is possible to take the property of the ground into which the corresponding pile is to be driven and a countermeasure construction method according to the property.

As a method of measuring and managing the amount of intrusion of a pile, there is a conventional method of marking the pile or a wired type measuring method. The amount of change in the marking and the line according to the driving operation of the pile driver are known. The penetration amount of the pile was measured according to the winding amount.

[0004]

However, the former marking method has drawbacks in that the preparatory work such as marking is troublesome and that the visual work causes a difference in individual reading. In addition, at least one recording person is required, and for this kind of management data, of course, it is necessary to calculate the amount of impact per hit and time, and it takes time to compile the data. Furthermore, it was difficult to deal with such cases when working on water.

Further, in the latter wired management method,
Wiring in the work area may interfere with heavy equipment work and cause troubles such as breakage, which may lead to reduced workability.It becomes difficult to handle long piles, and special dedicated equipment is required. I needed it.

The present invention has been made in order to solve the above problems, and a pile penetration control device capable of automatically measuring the pile penetration in a location away from the work site. The purpose is to provide.

[0007]

In order to achieve the above object, the present invention provides a target prism arranged on a pile driving head, and a target prism arranged opposite to the target prism for distance measurement of the target prism. An optical wave distance measuring instrument having an automatic tracking function for directing its light emitting / receiving surface toward the target prism in accordance with the movement of the target prism, and a calculation means for calculating the distance measuring data measured by the light wave distance measuring instrument. A recording means for recording the calculation result is provided.

[0008]

[Operation] With the above configuration, the measurement system can be set at a position away from the pile driving site.

By selecting the calculation method of the calculation means, it is possible to automatically record the amount of penetration per time and the amount of penetration per hit with a concrete table, graph or figure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a system configuration of a pile driving penetration amount management apparatus to which the present invention is applied.
The pile 1 is connected to a lower portion of a pile driving head 3 suspended by a crane of the base machine 2 and penetrated into the ground E by a striking operation of the pile driving head 3. The pile driving head 3 is driven by an operation panel 5 connected to the generator 4, and a target prism 6 is arranged on the pile driving head 3.

A light wave distance measuring device 7 is installed at a position facing the target prism 6 and separated from the target prism 6 by a predetermined distance L, and its light emitting / receiving surface faces the target prism 6.

The light-wave rangefinder 7 has a built-in automatic tracking function,
As the pile driving head 3 descends, the projection / light receiving surface of the light-wave rangefinder 7 is constantly directed toward the target prism 6, and an oblique distance, a vertical angle, and a horizontal angle are sequentially set from the start to the end of the driving. measure.

It is desirable that the distance L be at least several tens of meters or more in order to match the projected / received light amount with the target prism 6.

These data measured by the light wave distance measuring device 7 are wirelessly transmitted to the base machine 2 side and input through the receiver 9 to the personal computer 8 as an arithmetic means provided therein.

The personal computer 8 includes a main body 8a and a display 8
b, a keyboard 8c, and peripheral devices such as a printer (not shown), and the like, which executes an arithmetic program contained therein in accordance with these input signals from the start to the end of placing each pile 1, Calculation result display 8
Display in b.

FIG. 2 is a flow chart showing the execution procedure. First, initial setting such as manually inputting the pile number and other data through the attached keyboard 8c enters the drive standby state, and the optical wave measurement is performed. Ranger 7
By receiving the measurement data from, this is registered as an initial value (steps 1 and 2).

A pile driving head 3 is operated by a signal from the operation panel 5.
When the driving is confirmed, the difference between the received data and the initial value is calculated one after another, and the result is sequentially changed and displayed as an image image on the display 8b (steps 4, 5,).
6). When receiving the setting completion signal due to the stop of the operation panel 5,
While displaying the final result, the display contents are filed in a predetermined storage area (steps 7 and 8), and the standby state of step 1 is entered again.

FIG. 3 shows an image image displayed on the display 8b. An image diagram A schematically showing the penetration depth of the pile 1 is displayed on the left side of the screen, and the penetration depth is shown in the center. A graph B showing the relationship between (vertical axis) and time (horizontal axis) is displayed, and a table C that displays numerical information regarding the pile 1 is displayed adjacent to the graph B.

This data is filed for each pile, and when the work of one day is completed, it is used as a management daily report for the number of pilings, the piling positions, the piling depth distribution, the maximum piling time, the minimum piling time,
The average setting time, work standby time, etc. are calculated and recorded again.

Therefore, by examining these data, it is possible to grasp the daily work efficiency, the distribution state of the properties of the ground, and the like.

[0022]

As described above in detail with reference to the embodiments, in the pile penetration control device according to the present invention, since the measuring system can be set at a position away from the pile driving site, the conventional visual confirmation Compared with the case where the measurement is performed by the method, there is an advantage that the preliminary work such as marking is not necessary, the data can be obtained accurately and continuously, and the manual labor for the measurement is unnecessary. In addition, there is no impact on the work because the installation site and the measurement position are farther than the wired method. Furthermore, it has the advantage that it can handle arbitrary pile lengths and vibrating pile driving work, and can be adapted to both above-water and above-ground work.

Further, according to the present invention, the amount of penetration per time and the amount of penetration per hit can be automatically recorded by a specific table, graph, figure, etc. by selecting the calculation method of the calculation means. There is an advantage that data can be recorded and saved in a form that is easy to manage.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a system configuration of a pile driving penetration amount management device according to the present invention.

FIG. 2 is a flowchart showing a processing procedure by the management apparatus.

FIG. 3 is an explanatory diagram showing an image screen displayed during display.

[Explanation of symbols]

 1 pile 3 pile driving head 6 target prism 7 lightwave distance measuring device 8 personal computer (computing means) 8b display (recording means)

Claims (1)

[Claims] 1. A target prism disposed on a pile driving head, and a target prism disposed so as to face the target prism,
An optical wave distance measuring instrument having an automatic tracking function for measuring the distance to the target prism and directing the light emitting / receiving surface to the target prism according to the movement of the target prism, and the distance measuring measured by the light wave distance measuring instrument. An apparatus for managing a pile penetration amount, comprising: arithmetic means for arithmetically processing data and recording means for recording the arithmetic result.