Evolution of shallow foundation load test from static to cyclic loading
Evolution of shallow foundation load test from static to cyclic loading
The conventional bearing capacity of a shallow foundation under vertical centered loading measured under static and cyclic loading differs. This observation is of crucial importance to anticipate behaviour of structure under cyclic loads with or without eccentricity. The most important factor appears to be the ratio of the cyclic load amplitude to the maximum static bearing capacity. This paper presents an experimental study during which a 0.1m square steel footing was statically and cyclically loaded. A parametric study was carried out by performing tests on a physical model based on a sand mass reconstituted at a fixed density index. Complementary tests were performed on an intact silty soil on an experimental test site. The loading frequency was kept below 1Hz, which is lower than the natural frequency of the foundation. Prior to testing, cone penetration test and laboratory tests were performed to determine engineering properties of the soil. An analysis of the results and a comparison with previous tests available in the literature are presented. Predictions of the footing settlement were made by traditional methods, which were then modified to take into account of the effect of cyclic loading.
P. Reiffsteck; Fabien Szymkiewicz; Carlos Minatchy; Taisuke Sanagawa; D. Yokoyama
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
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