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No.14 (1977/09) >

 
Title :連続プレキャスト合成桁の実験的研究
Title alternative :Experimental Study on Continuous Precast Composite Girder
Authors :大城, 武
多和田, 伸
Authors alternative :Oshiro, Takeshi
Tawata, Shin
Issue Date :30-Sep-1977
Abstract :Continuous girder bridges with precast members have been used relatively large number in Japan, and the techniques invalved introduction of prestressing in concrete slab or between precast girders. These bridges have improved high riding quality and smooth passage of vehicles in addition to difficulties of assuring good maintenance of hishways. However, these techniques have shown undesirable tendency in ecoromical view points because it reguires complex processes in field. The main purpose of this experimental research is to improve the construction techniques, where epoxy resin is used as grouting material between precast girders and also prestressing is introduced at end blocks. Slab concrete is casted in situ to construct composite girders. This experimental research concentrates on investigations of the connection and also the general behavior of continuous girder by static bending test. At different load steps which are gradually increased up to failure of the test beams, width and distribation of cracks, slip between deck and precast girder, compressive and teusile strain and deflection are measured, from which general behaviors of the test beams are analysed experimentally. From the analysis mentioned above, it is concluded that the proposed technique guarantees the continuity at mid-span and the girders with the proposed connection behave as continuous without reducing any flexuraI regidity. Also, the technique simplifies the construction processes and improves method of connections which will have wide applications in many fields.
Type Local :紀要論文
ISSN :0387-429X
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/26934
Citation :琉球大学理工学部紀要. 工学篇 = Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering no.14 p.139 -148
Appears in Collections:No.14 (1977/09)

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