温泉地帯に建設されたアーチ橋アバットの温度ひびわれ制御対策

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  • 坂手 道明
    社団法人 土木学会 日本道路公団東京第2建設局建設部工務課
  • 万木 正弘
    社団法人 土木学会 鹿島建設技術研究所第一研究部

書誌事項

タイトル別名
  • CONTROL OF THERMAL CRACKING IN ARCH ABUTMENTS CONSTRUCTED IN BEPPU HOTSPRING REGION
  • オンセン チタイ ニ ケンセツサレタ アーチキョウ アバット ノ オンド ヒビ

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抄録

Beppu bridge in Kyushu district which forms part of the Kyushu transverse highway from Nagasaki to Ohita, is a concrete arch bridge with a main span of 235m. Construction site of the bridge is in a famous hot-spring region and in severe corrosive conditions. It is required to construct durable concrete structures especialy for the foundation of the bridge.<br>The abutments of the bridge are massive structures having the dimension of about 40×35m and 23m height, so it is very significant in constructing the structures to control thermal cracks resulting from the heat of hyderation. According to the examination of the thermal stress analysis, some construction practices were taken to control these type of cracking.<br>Practices used included precooling of the concrete using flake ice as part of mixing water, use of low-heat type of cement and reinforcing outer sides of the abutments in order to restrict the size of cracks.

収録刊行物

  • 土木学会論文集

    土木学会論文集 1988 (397), 167-176, 1988-09-20

    公益社団法人 土木学会

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