Pile

Pile location inquiry method
There is much that we adopt pilings inquiry with bridge pier or pipe and drain construction (shield) job of under bridge abutment. When pilings becomes obstruction, we detour. We using a method of construction to progress between pilings and pilings when we cannot detour. In this case pilings location becomes necessary. As for the pilings inquiry method, magnetic exploration and Rayleigh wave method is adopted conventionally. In traditional inquiry method, only the data pilings existed or setting depth was provided. It became clear that general magnetic exploration existed in circumference 360 degrees of magnetism sensor, but the location (azimuth) did not become clear. In general magnetic exploration, it became clear that magnetism existed in circumference 360 degrees of magnetism sensor, but the location (azimuth) did not become clear. It became clear that magnetism existed in circumference 360 degrees of magnetism sensor. It is three-dimensional magnetic exploration (TESLAFINDER) that was developed in such a use.

Pile location inquiry (magnetic exploration)

THE TESLAFINDER (three-dimensional magnetic exploration device)
THE TESLAFINDER is three-dimensional and can investigate location of pile. Because it developed the magnetism sensor which had directivity, and by turning it, an inquiry became possible. Traditional magnetism sensor calculate remainder of magnetic charge (magnetism grade) move back and forth sensor and investigate it. But THE TESLAFINDER is the highly precise exploration device which it can observe fixed point. We spin 180 degrees sensor, and the magnetic charge of front were measured by ＋numerical value, the magnetic charge of back were measured by −numerical value. Three-dimensional an inquiry of object became possible by three data of depth of sensor, rotation angle of sensor, magnetic charge with a computer.

An inquiry result of a TESLAFINDER
Inquiry consequence of a TESLAFINDER can paint pictures of horizontal position of pile by an inquiry of boring hole of a plural point as upper diagram. In addition, we can make a three-dimensional drawing by compound of data of each depth.

A bomb inquiry
Most bomb inquiries are done by magnetic exploration conventionally. However, we were able to do detection only entity of circumference 360 degrees of magnetism sensor in traditional sensor, but a bomb inquiry became possible more precisely by TESLAFINDER having detectivity power of a horizontal direction (XY direction) and vertical direction (Z direction).

A magnetism sensor
A magnetism sensor is machinery measuring a geomagnetic field. A magnetism sensor can measure magnetic charge of magnetic substance by influence when a magnetic substance (iron) exists in circumscription of the sensor, we set geomagnetic field with zero (a zero). It is a magnetism sensor that utilized this principle. inquiry of object including magnetic substance is possible. For example steel sheet-pile, H-steel, earth anchor, reinforcement of concrete pile (magnetic substance), and the others.

A pile damage investigation

The damage and setting of a pile
We can investigate setting depth too by elastic wave, in case of a pile crops out.
Elastic wave method can investigate damage in crack of pile too.
Elastic wave method is method investigating setting of pile and damage situation we give bombardment with dedication hammer, we catch the reflected wave of elastic wave to propagate in of pile.

The left photograph is pile examining example of the pier which excavation of foundation circumscription, and it enforced. We did the elastic wave inquiry by install anchor-bolt in pile side

Observation of pile inside

Observation of damage of pile inside is executed after inserted CCD camera and fiberscope, drilling in levee crown and side of pile
In upper photography, subsoil water soak into the part of except crack, and a thing like a fur adhere to side.