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Experimental study on impact resistance of prototype PC rock-sheds

Authors
Publisher
土木学会
Publication Date
Keywords
  • Rock Falling
  • Pc Rock-Sheds
  • Impact Resistance
  • Two-Hinged And Inverted L-Shaped Type
  • Rigid Frame Type
  • 510
Disciplines
  • Design

Abstract

In order establish a rational impact design procedure of PC (Prestressed Concrete) rock-sheds, the ultimate strength of two types of PC rock-sheds are experimentally discussed. In this study, prototype two-hinged inverted L-shaped and rigid frame types of structure were considered. Three and/or five ton steel weights were freely dropped onto the center of each PC rock-shed with 90 cm thick sand cushion, in which the maximum falling height was 30 m. The results obtained from this study are as follows: 1) behaviors of the main girders in two-hinged and inverted L-shaped PC rock-sheds have similarity to those simply supported beam; 2) dynamic behaviors of rigid frame type of PC rock-shed have similarity to those of a rigid portal frame; 3) rigid frame type of PC rock- sheds may provide 1.7 times bigger safety margin than the two-hinged and inverted L-shaped type ones;

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