Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
In order to clarify the structures of grounds, buildings on which are liable to be damaged by earthquakes, many examples of their earthquake-induced damage have been investigated. The results are summarized as follows: (1) When grounds under buildings are hard, or when they are approximately horizontally-stratified though they are soft, the occurrences of the earthquake-induced damage to buildings are very rare; (2) buildings are liable to be deformed by earthquakes on grounds which are soft but inclined and when they straddle both soft and hard grounds. The deformation is liable to occur in the inclined direction of the soft ground bottom; (3) many buildings have been damaged by a large lateral or vertical differential displacement due to the uneven thickness of soft ground; (4) abovementioned soft grounds include layers like peaty soil, extremely soft clayey soil, liquefiable sandy soil, reclaimed soil or embankment; (5) shear cracks of buildings are liable to occur at right angles to the equi-depth line of soft ground bottom, and predominant shear crack line drops in the direction of soft ground becoming thin. Horizontal crack line does parallel to the countour lines of soft ground bottom.
In order to clarify the structures of grounds, buildings on which are liable to be damaged by earthquakes, many examples of their earthquake-induced damage have been investigated. The results are summarized as follows: (1) When grounds under buildings are hard, or when they are approximately horizontally-stratified though they are soft, the occurrences of the earthquake-induced damage to buildings are very rare; (2) buildings are liable to be deformed by earthquakes on grounds which are soft but inclined and when they straddle both soft and hard grounds. The deformation is liable to occur in the inclined direction of the soft ground bottom; (3) many buildings have been damaged by a large lateral or vertical differential displacement due to the uneven thickness of soft ground; (4) abovementioned soft grounds include layers like peaty soil, extremely soft clayey soil, liquefiable sandy soil, reclaimed soil or embankment; (5) shear cracks of buildings are liable to occur at right angles to the equi-depth line of soft ground bottom, and predominant shear crack line drops in the direction of soft ground becoming thin. Horizontal crack line does parallel to the countour lines of soft ground bottom.
Effect of Uneven Thickness of Soft Ground on Earthquake Damage to Building
1990
11 pages
Report
Keine Angabe
Englisch
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