VERTICAL ACCURACY MANAGEMENT METHOD OF UNDER-GROUND PILED COLUMN

PROBLEM TO BE SOLVED: To provide a vertical accuracy management method of an under-ground piled column capable of sufficiently managing vertical accuracy when the under-ground piled column is built in a pile hole in the case that the under-ground piled column is not cylindrical or even in the case t...

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Bibliographische Detailangaben
Hauptverfasser:	ODA YUKIHIRO, KATO KEI, NUKUSHINA HIDEO, MINOWA TATSUO, GOTO KAZUMASA
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE EARTH DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FORMS FOUNDATIONS GALLERIES GYROSCOPIC INSTRUMENTS HANDLING BUILDING MATERIALS ON THE SITE HYDRAULIC ENGINEERING LARGE UNDERGROUND CHAMBERS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS MINING NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS SCAFFOLDING SHAFTS SHUTTERING SOIL SHIFTING SURVEYING TESTING TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a vertical accuracy management method of an under-ground piled column capable of sufficiently managing vertical accuracy when the under-ground piled column is built in a pile hole in the case that the under-ground piled column is not cylindrical or even in the case that the under-ground piled column is long.SOLUTION: A vertical accuracy management method of an under-ground piled column includes: a step of installing a cylindrical measurement pipe 14 on an outer surface of the under-ground piled column 1 so as to be approximately parallel to a column core of the under-ground piled column 1 and installing a target plate 15 on an end side of the measurement pipe 14 on ground; a step of inserting the under-ground piled column 1 into a pile hole 2 with the measurement pipe 14 and supporting an upper end part of the under-ground piled column 1 by a frame 11 for the under-ground piled column installed on ground; a step of installing a laser plummet instrument 17 right above the measurement pipe 14 on ground and radiating laser light vertically below through the measurement pipe 14 by the laser plummet instrument 17; and a step of measuring deviation of the under-ground piled column 1 by sighting a point of the laser light on the target plate 15 and correcting plumbing of the under-ground piled column 1 based on the measured deviation.