METHOD AND DEVICE FOR EVALUATING EXPOSED TYPE FIXED COLUMN BASE

PROBLEM TO BE SOLVED: To reduce the cost of an exposed type fixed column base by computing an optimum rotational spring constant even when using a threaded bar formed of ordinary steel, as an anchor bolt. SOLUTION: In this method for evaluating the exposed type fixed column base, the exposed type fi...

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Bibliographische Detailangaben
Hauptverfasser:	OKAMOTO TATSUO, TABUCHI KATSUMICHI, NOJIMA HIDEO, HIRAIDE TORU, KANEKO HIROFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING BUILDING MATERIALS CEILINGS EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FLOORS FOUNDATIONS GENERAL BUILDING CONSTRUCTIONS HYDRAULIC ENGINEERING INSULATION OR OTHER PROTECTION OF BUILDINGS ROOFS SOIL SHIFTING STRUCTURAL ELEMENTS UNDERGROUND OR UNDERWATER STRUCTURES WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the cost of an exposed type fixed column base by computing an optimum rotational spring constant even when using a threaded bar formed of ordinary steel, as an anchor bolt. SOLUTION: In this method for evaluating the exposed type fixed column base, the exposed type fixed column base for fixing a base plate to which a steel column of a building is jointed, to a footing concrete foundation by the threaded anchor bolt, is evaluated using the rotational spring constant KBS of the column base in an expression: KBS=M/θ... (1) expressed by the ratio of bending moment M of the column base to the rotation angle θ of the base plate, and the bending moment M of the column base and the rotation angle θof the base plate are expressed by M=C(DBS/2-k2 xn )+T(DBS/2-dt ) and θ=(δT+δC)/(DBS-k2 xn -dt ).