場所打ち鉄筋コンクリート杭の曲げせん断挙動

概要

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Although many reinforced concrete piles were damaged by Hanshin-Awaji earthquake of 1995, there is little information about their seismic strength. It is necessary to accumulate more experimental data to establish the seismic design for foundation structures. An experimental investigation was performed to examine the seismic strength of cast-in-place reinforced concrete piles with six specimens. According to the calculation of pile moment distributions in soil, the ratios of shear span to pile depth of the specimens were determined to 1.5 (shear failure type) and 2.5 (flexural failure type). The test results showed that the flexural failure type specimens with ordinary cast-in-place pile reinforcement showed relatively ductile behavior. The strength of the shear failure type specimens developed at different displacement angles corresponding to the transverse reinforcing ratios. A comparison of the test results with calculated results was also made.
大同工業大学の論文