| 单词 | portal bracing |
| 释义 | > as lemmasportal bracing portal bracing n. Engineering = sense 1f; (also) the technique or practice of using portal frames to give strength and stability. ΘΚΠ society > occupation and work > industry > building or constructing > building or providing with specific parts > specific parts built or constructed > [noun] > framework > rigid structural frame portal1876 portal bracing1881 portal frame1908 1881 Trans. Amer. Soc. Civil Engineers 10 164 Strong top lateral and portal bracing would greatly increase the strength and durability of the bridge. 1908 M. S. Ketchum Design of Highway Bridges vii. 112 Portal bracing is placed at the ends of through bridges in the planes of the end-posts to transfer the wind loads from the upper lateral system to the abutments. 1974 Sci. Amer. Feb. 95/1 The Crystal Palace was..the first [building] in which a light frame was made rigid against wind loads by the technique that came to be known as portal bracing. 2002 Vancouver Province (Brit. Columbia) (Nexis) 3 June a16 Routes to avoid... Pattullo Bridge, New Westminster. Repairs to the portal bracing following a crane crash some months ago. < as lemmas |
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