エネルギー吸収を目的とした鋼製橋脚梁中央部のせん断変形に関する基礎研究

抄録

Recently, many new technologies development relating to seismic design of bridge piers for the earthquakes have been produced. From this reason, the seismic performance has been improved. When an earthquake is generated for the Rahmen structure, bending failure occurs at the base and shear deformation occurs at the center of the beam. Normally, metal materials can absorb the energy by being plasticized from earthquakes. However, when shear buckling is happened, the hysteresis of the material can’t be maintained and the amount of absorbed energy decrease. In this research, we focus on the Rahmen structure. We simulate nonlinear FEM “Marc” and test that imitated the center of the beam. By carrying out a four-point shear experiment using this test piece, we aim to reproduce shear deformation. This experiment can confirm the decrease in absorbed energy. Furthermore, absorbed energy can be suppressed by applying appropriate reinforcement.