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Author(s):	Scheiter, S.
Title:	Vertikale Schwingungen von Blockfundamenten bei linearer Dichtezunahme des Baugrunds
Abstract:	Auf einem Sandvorkommen werden sechs Blockfundamente zu stationären Schwingungen angeregt. Die Scherwellengeschwindigkeit im Baugrund nimmt linear mit der Tiefe zu. Das Schwingungssystem wird durch ein Modell aus einer Feder, Masse und Dämpfung nachgebildet, dessen Elemente frequenzunabhängig sind. Für die wirksame Baugrundtiefe ist die doppelte Kantenlänge des Fundaments repräsentativ. Im Resonanzfall ist die Länge der abgestrahlten Wellen unabhängig von der Scherwellengeschwindigkeit. Sie vergrößert sich linear mit der Kantenlänge und der Quadratwurzel aus dem Quotient der am Schwingungsvorgang beteiligten Gesamtmasse und der Feder. Vertical vibrations of block foundations with linear increase in density of the soil. On a sand stratum six block foundations are activated to stationary oscillations. The shear wave velocity in the soil increases linearly with depth. The oscillating system is replicated by a model of a spring, mass and damping, whose elements are frequency independent. The effective soil depth is represented by the double edge length of the foundation. In the case of resonance, the length of the radiated waves is independent of the shear wave velocity. It increases linearly with the edge length and the square root of the ratio of the total mass, involved in the oscillation process, and of the spring.
Source:	Bautechnik 87 (2010), No. 6
Page/s:	318-321
Language of Publication:	German

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