JP3052614U - Pile-building adjustment measuring machine - Google Patents

Abstract

(57) [Summary] [Problem] In building a foundation pile, while improving the accuracy such as the planar position, the inclination of the pile direction, the verticality of the pile axis, etc., the measurement time for construction is shortened. I do. SOLUTION: A pointed head in a circular ring is used as a reference point.
Visually check the pile and check the vertical position, directional inclination, and verticality of the pile center and the vertical line of the outer periphery of the pile by checking the vertical line of the pile center and the vertical line of the regular interval provided in the measurement plate. The purpose is to reduce the pile installation accuracy and the construction measurement time by performing construction after confirmation.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The purpose of this invention is to improve the installation accuracy and shorten the construction time during foundation pile construction.Specifically, it quickly measures the vertical construction position, pile direction inclination, and vertical axis of the pile axis. And for accuracy.

[0002]

[Prior art]

 Conventionally, the vertical position of a pile, the inclination of a pile, and the linearity of a pile axis have been measured using a plumb bob or a goniometer (transit) to check the verticality of the pile against the pile center. It was usual to perform the construction.

[0003]

[Problems to be solved by the invention]

 In the prior art, since only the vertical line of the pile main body was used as a criterion, there was a problem that it took a long time to adjust and lacked accuracy.

[0004] Further, there is a problem that since there is only one judgment material, it is necessary to rely on an arbitrary professional intuition of a measurer and experience of a skilled person.

[0005] Furthermore, when using the down swing, there is a problem that the vertical is hard to be determined by the flow of the wind.

[0006] The present invention has been made in view of the above-mentioned problems of the conventional technology, and the purpose of the present invention is to improve the installation accuracy by a simple operation and a measuring instrument, and to improve the pile center displacement. This is a device designed to prevent the pile from tilting and to shorten the construction time.

[0007]

[Means for Solving the Problems]

 To achieve the above object, the following measuring instrument was devised. A sharp point is provided as a reference point in the circular ring, the measuring plate is passed through the sharp point, the pile is visually observed, and the pile center and the vertical line of the outer periphery of the pile are indicated by the vertical line with the pile center index vertical line and the equidistant reference vertical line. And means for measuring.

[0008]

[Embodiment of the invention]

 As an embodiment, the measuring instrument has the following structure. Entire perspective view A circular ring support rod 2 is welded to a fixing plate 1. The circular ring 3 and the upper and lower adjustment rods 4 are stuck together and integrated, and the lower ends of the upper and lower adjustment rods are inserted into the circular ring support rods and fixed with the thumb screws. On the other hand, at the left end of the perspective view, the measuring plate supporting rod 5 slides in an arc on the fixed plate surface. The measurement plate 6 is supported by the measurement plate vertical adjustment rod 7 and is integrated by tacking. Insert the lower end of the vertical adjustment rod of the measuring plate into the supporting rod of the measuring plate and fix it with the thumbscrew.

A pile center index vertical line 9 centered on a pile center index vertical line mark 8 and an equally-spaced reference vertical line 10 are installed using a nylon thread inside the measurement plate, and these are vertically and horizontally crossed. The reference horizontal line 11 to be attached is stuck. Further, a horizontal unit 12 is provided at a center position of the upper frame member.

[0010] The built-in adjustment measuring instrument operates in the following manner. Use the level at the top of the measuring plate to set the whole instrument horizontal. If it is not horizontal, horizontal adjustment is realized by fine adjustment of the rotary fastener 13. After that, the pile body is visually observed from the circular ring pointed head 14. If the pile center of the pile body and the vertical line of the pile center index overlap straight through the line of sight, it is compatible. When the pile center and the vertical line of the pile center index do not overlap, slide the measuring plate support rod on the fixed plate surface to achieve horizontality.

[0011] In parallel with the above operation, using the outer peripheral vertical line of the pile and the equally-spaced reference vertical line as a guide, whether the length from the internal position of the left and right vertical frame members to the outer peripheral vertical line is equal or not equal. Measure. If they are not equal, fine adjustment is performed based on the position of the center of the pile and the vertical line of the index of the center of the pile.

[0012] The above operations are performed by adjusting the pile body and the measuring instrument while the pile driver operator and the measuring instrument observer exchange conversation with each other, and setting the flat pile installation position, the pile direction inclination, the pile orientation, and the like. It will proceed while checking the verticality of the shaft.

[0013]

【Example】

 The results of the experiment conducted using the pile-building adjustment measuring machine in the factory are as follows. Piles with a length of 5 m and a diameter of 400φ were constructed so that the center of the pile was located at each of the four corners of a square having a side of 5 m. The management value of the pile misalignment is assumed to be D / 4 and within 10 cm (D: outside diameter of the pile) (Reference, Pile Construction Handbook, published by Japan Road Association). As a result, the misalignment of the pile centers was 2 cm, 1.5 cm, 1.0 cm, and 1.5 cm, respectively, all within 5 cm. In addition, the time required for adjusting the center of the pile was determined within one minute, although transit time usually required within 3 minutes when using a transit per pile.

[0014]

[Effect of the invention]

 The following practical effects are obtained by adding the ingenuity as in the present invention. (1) The improved pile placement accuracy of the pile layout diagram created by the designer has enabled the ground support force to be achieved as designed. (2) The piles can be adjusted without being affected by weather conditions such as wind direction and wind speed. (3) Standardized and accurate piles can be built by the measurer regardless of skilled or unskilled person. (4) The adjustment time of the built-in pile was shortened.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of the device of the present invention.

FIG. 2 is a side view of the measuring instrument.

FIG. 3 is a perspective view of a main part of a measuring plate from the inside of the measuring instrument.

FIG. 4 is a perspective view of a main part of a circular ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixing plate 2 Circular ring support rod 3 Circular ring 4 Vertical adjustment rod 5 Measurement plate support rod 6 Measurement plate 7 Measurement plate vertical adjustment rod 8 Pile center index vertical line mark 9 Pile center index vertical line 10 Equidistant reference vertical line 11 Reference Horizontal line 12 Level device 13 Rotating clamp 14 Circular ring point

Claims (1)

[Utility model registration claims] In the construction of a foundation pile, a pile is visually observed through a measuring plate from a point inside a circular ring in two directions, front and side, and the pile is visually observed. When the lines overlap with each other, and when the outer perimeter of the pile body is collated based on the equally-spaced reference vertical line, the measuring instrument and the pile body are adjusted so that the target left and right lengths match, and the work is performed. A pile setting adjustment measuring machine characterized in that it measures and adjusts a planar setting position, a pile direction inclination, and a verticality of a pile axis.