| 摘要 |
A column, as used to support overhead electrical power or telephone lines, comprises a series of members at least one (1) of which is compressively resilient while the others (2) are relatively rigid, and tensionable means (4, 5) which when tensioned secures the members (1, 2) in a fixed relationship constituting the column with the or each compressively resilient member in compression. Such column enables the dissimilar strength properties of the different members (1 and 2) to be fully utilised at the maximum flexural condition of the composite structure. |
