| 单词 | prestressed |
| 释义 | preˈstressed, ppl. a.
[f. prec. + -ed1.]
Previously subjected to stressing; into which stress has been deliberately introduced during manufacture; spec. of concrete: reinforced by steel rods or wires which have been tensioned while the concrete is setting, so that after setting they tend to compress the concrete and thereby strengthen it.
1936Structural Engineer XIV. 251/1 Two telegraph posts 40 ft. long,..one..in pre-stressed concrete, and the other..in ordinary reinforced concrete, were subjected to alternate stressing. 1948Concrete & Constructional Engin. XLIII. 260 The resiliency and freedom from cracks of prestressed concrete make the material very suitable for railway sleepers and runways. 1955Times 19 July 4/7 Huge pipes in cast iron, or spun iron, or prestressed concrete. 1963Simonds & Church Conc. Guide Plastics (ed. 2) vii. 172 These prestressed laminated structures show strengths three to four times those of the unstressed fabric laminates. 1969Jane's Freight Containers 1968–69 68/1 Crane—18-inch pre-cast, pre-stressed concrete piles; pre-stressed concrete deck. 1973Times 14 Mar. 4/7 As Lancashire County Council's chief assistant in charge of bridges he designed about fifty, including..its first prestressed bridge. |
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