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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.8 (1976) No.1

新しい覆工板の開発

Development of New Steel Road Deck

中西 輝行(Teruyuki Nakanishi) 町田 豊(Yutaka Machida) 斉藤 恂(Makoto Saito) 井上 末富(Suetomi Inoue) 大方 茂(Shigeru Okata)

要旨 : すべり摩擦係数がアスファルト路面に匹敵する性能をもち,車輌走行騒音は従来の鋼製覆 工板より低い新しい覆工板を開発した。この覆工板は,H形鋼とCT 形鋼を溶接によって組 立てた構造であり,従来のものより軽量化されているが,道路橋示方書に示す設計荷重に 対し十分に安全である。すべり摩擦係数がすぐれているのは,路面となるH形鋼フランジ 表面の,新しいユニバーサル圧延技術によって形成された角小突起に負うところが大であ る。 Synopsis :

Kawasaki Steel Corp. has developed the new steel road deck with such features as follows: (1) Skidding resistance between automobile tires and road surface is comparable with asphalt road. The excellent skidding resistance is derived from small square projections formed on the flange surface of H-shapes by special work roll of universal mill. (2) Running noises of automobiles are a little more than those on asphalt road, but somewhat less than those on usual steel road decks.(3) Being constructed with welded H-shapes and split tees, the deck has less unit weight and higher strength than the design load according to the specifications for high way bridges.

(c)JFE Steel Corporation, 2003

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