プレキャストプレストレストコンクリート圧着柱の曲げせん断性状と変形性能

抄録

Ten 1/3-scale precast prestressed concrete columns under anti-symmetrical loading were tested. Experimental parameters were axial load level, prestressing force level, shear reinforcement ratio and grouting. The flexural capacities were evaluated by the ACI equivalent rectangular stress block and the plane section assumption. The evaluated results agreed well to the test results. An evaluation method of column shear strength based on the shear-friction model was proposed. One specimen lost its axial load capacity by shear failure, which could be predicted by the method. However, an appropriate value for the shear-friction factor μ should be discussed further. Load-deformation curves were analytically derived by specifying the decompression moment and the maximum load carrying capacity.