Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Earthquake Destructiveness Potential Factor and Permanent Displacements of Gravity Retaining Walls
An empirical equation for estimating the permanent displacements of gravity retaining walls with dry backfill during earthquakes is proposed. It was obtained analyzing the displacements of Newmark's block produced by the horizontal components of 155 earthquakes which took place in various parts of the world. The displacements were correlated with the earthquake destructiveness potential factor,PD, a parameter representative of earthquake severity introduced by Araya and Saragoni (1984). This parameter, defined as the ratio between the Arias intensity and the square value of zero crossings per second of an accelerogram, synthetizes the major characteristics of the seismic ground motion which can affect the behaviour of the wall. For each record of the earthquakes considered, the potential destructiveness factor and the final displacements of Newmark's block were determined using different values for the resistance factor,N, and, with the multiple regression technique, the equation that best fits the calculated values was determined. This equation was compared with the equation suggested by Wong (1982) and their uncertainties were analyzed. Finally an empirical equation for estimating the displacements of a gravity retaining wall is obtained.
Earthquake Destructiveness Potential Factor and Permanent Displacements of Gravity Retaining Walls
An empirical equation for estimating the permanent displacements of gravity retaining walls with dry backfill during earthquakes is proposed. It was obtained analyzing the displacements of Newmark's block produced by the horizontal components of 155 earthquakes which took place in various parts of the world. The displacements were correlated with the earthquake destructiveness potential factor,PD, a parameter representative of earthquake severity introduced by Araya and Saragoni (1984). This parameter, defined as the ratio between the Arias intensity and the square value of zero crossings per second of an accelerogram, synthetizes the major characteristics of the seismic ground motion which can affect the behaviour of the wall. For each record of the earthquakes considered, the potential destructiveness factor and the final displacements of Newmark's block were determined using different values for the resistance factor,N, and, with the multiple regression technique, the equation that best fits the calculated values was determined. This equation was compared with the equation suggested by Wong (1982) and their uncertainties were analyzed. Finally an empirical equation for estimating the displacements of a gravity retaining wall is obtained.
Earthquake Destructiveness Potential Factor and Permanent Displacements of Gravity Retaining Walls
Crespellani, Teresa (Autor:in) / Madiai, Claudia (Autor:in) / Vannucchi, Giovanni (Autor:in)
ASCE National Convention ; 1996 ; Washington, DC
20.12.2015
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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