Author(s): C. J. Montgomery; A. W. Lipsett
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Keywords: No Keywords
Abstract: Measurement of dynamic ice forces on engineering structures is usually accomplished by utilizing load cells, pressure cells or strain gauges in conjunction with load beams or plates placed in front of a structure subjected to ice action. Three disadvantages of these measurement devices are apparent: they are expensive, they cannot be moved from site to site, and the loads measured may not represent true ice loads but may include the dynamic effects of ice-structure interaction. An indirect method overcomes all of these disadvantages. This method involves the measurement of the response of an existing structure to ice forces and the development of a mathematical model that relates the response to the dynamic ice force causing the response. The ice forces can then be deduced from the measured response using the mathematical model. This indirect method has been evaluated by applying it to a massive bridge pier in Alberta for which direct measurements of ice forces can be made. The ice forces calculated using this method compare favorably with forces measured by conventional means at this site.
Year: 1981