ANTI-SEISMIC REINFORCEMENT PERFORMANCE EVALUATION

摘要

PURPOSE: An aseismatic reinforcement structure of a pier using a helical bar is provided to improve the aseismatic performance of the pier of a high-level road by using a helical bar as a reinforcement material. CONSTITUTION: An aseismatic reinforcement structure of a pier using a helical bar is formed by burying a helical bar in a cylindrical column in a spiral shape. The helical bar has a circular center body and wing portions. The wing portions are continuously protruded along the center body in a radial shape. The protruded lengths of the wing portions adjacent to each other are different from each other. [Reference numerals] (AA) Longitudinal rebar; (BB) Hoop rebar; (CC) Horizontal rebar