プレキャストコンクリート用のシースの付着割裂強度に関する研究

概要

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The main objectives of the present experimental investigation are to study the bond strength of steel, spiral sheaths for a precast concrete system and to compare the bond behaviors of sheaths with those of deformed bars which have similar diameters to the sheath diameter. To achieve, these objectives, 56 specimens of a full scale section of beams or columns were tested with a constant bonded length. The influences of the following parameters on the bond strength were studied: height of the lug (rib) of sheath, sheath diameter, casting depth, thickness of the cover concrete, amount of the lateral reinforcement, loading history and size of the deformed bar. The test results showed that the system bar-mortar-sheath behaves as a unit. Also that the bond behavior of sheath is almost similar to that of deformed bars with the same diameter to the sheath
社団法人日本建築学会の論文
1995-07-30