Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Slope Stability under Cyclic Foundation Loading - Effect of Loading Frequency
It has long been recognised that cyclic live loads on foundations greatly affect the strength and deformational characteristics of the foundation soil due to repeated application of stress. However, the effects of cyclic loading on foundations located near the crest of a slope have not been investigated adequately. Therefore, the effects of cyclic loading frequency on the behaviour of a surface strip footing founded near the crest of a slope were studied through small-scale physical model testing and the results are discussed in this paper. In this experimental investigation, a model footing was subjected to vertical cyclic loading (for 100,000 cycles) and the variations in the permanent and resilient deformations of the foundation in both the vertical and lateral (towards the slope) directions were examined for different loading frequencies. The experimental results clearly showed that, although cyclic loading increased the bearing capacity of the foundation soil, the value of this improvement decreased with increases in the loading frequency. Also, the frequency was found to have a negative impact on the permanent deformation, i.e., permanent deformations in both the vertical and sloping directions increased with increases in the loading frequency although the footing was subjected to the same loading amplitude and number of cycles.
Slope Stability under Cyclic Foundation Loading - Effect of Loading Frequency
It has long been recognised that cyclic live loads on foundations greatly affect the strength and deformational characteristics of the foundation soil due to repeated application of stress. However, the effects of cyclic loading on foundations located near the crest of a slope have not been investigated adequately. Therefore, the effects of cyclic loading frequency on the behaviour of a surface strip footing founded near the crest of a slope were studied through small-scale physical model testing and the results are discussed in this paper. In this experimental investigation, a model footing was subjected to vertical cyclic loading (for 100,000 cycles) and the variations in the permanent and resilient deformations of the foundation in both the vertical and lateral (towards the slope) directions were examined for different loading frequencies. The experimental results clearly showed that, although cyclic loading increased the bearing capacity of the foundation soil, the value of this improvement decreased with increases in the loading frequency. Also, the frequency was found to have a negative impact on the permanent deformation, i.e., permanent deformations in both the vertical and sloping directions increased with increases in the loading frequency although the footing was subjected to the same loading amplitude and number of cycles.
Slope Stability under Cyclic Foundation Loading - Effect of Loading Frequency
Islam, M. A. (Autor:in) / Gnanendran, C. T. (Autor:in)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 750-761
25.02.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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