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The paper presents the concept of Prestressed Foundations (PSF) for overhead line towers that are subject to uplift, compressive loads and/or overturning. Tests have been performed in centrifuge, under forced vibrations at fixed frequencies for different force excitations. The comparative analysis conducted in centrifuge has shown that (1) gravity...
Contexts in source publication
Context 1
... ready interpretation of non- linearly occurrence. A horizontal force supplied by the vibrator mounted on the swinging basket shook the pylon model. Instrumentation was composed of three tridimensional accelerometers (# 1-2-3), two 1D accelerometers (# 11-12), one displacement sensor (# 13) and one force sensor (# 14). They are affixed as shown on Fig. ...
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... anchoring system used (Fig. 5) belongs to a family of high performance anchorage devices suitable for any type of soil (Habib et al 1982), which are easy to use with known driving in or propulsion processes. It comprises (1) an anchorage element adapted for penetrating into ground under the driving action, and (2) one articulated element pivotally connected to the main body by a flexible connection. ...
Context 3
... of tests on many different pylons resting on their foundations ( Fig. 9 and 10) have evidenced that prestressed foundation presents a quasi-elastic behaviour. These plots of frequency versus vibratory amplitude in arbitrary units provide vibration signatures of soil-structure interaction characterising the mechanical performance of the tested pylon. Of course, this non destructive test can be applied also to ...
