Author(s): Takahiro Takeuchi; Mikio Sasaki; Kazuo Miura; Sinji Kioka; Hiroshi Saeki
Linked Author(s): Mikio Sasaki
Keywords: No Keywords
Abstract: Ice load acting on hydraulic structures in ice-covered areas is of great importance for their design. Deformed ice such as an ice ridge with a consolidated layer of ice may impart a larger load because of its larger thickness. However, ice indentation tests have mainly been conducted using level sheet ice (un-deformed ice). To make a consolidated layer model as a test sheet in a cold room, ice blocks of variable size were made and mixed with water close to its freezing temperature. The ice sheet was kept to a planed thickness (h), and used for an indentation test. Indentation velocity (V) and cubic ice block size (a) were varied as parameters, and their effects on the ice load were investigated by comparing the results with those of un-deformed ice. This paper examines the effects of (a/h) and (V/h) on ice load and ice failure pattern, and compares them with those of a multi-crack model under a compressive loading presented by Coosley (1984).
Year: 2004