Experimental Study on Elasto-Plastic Behavior of Steel Reinforced Concrete Space Frames

概要

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Elasto-plastic behavior of steel reinforced concrete (SRC) space frames subjected to constant axial thrust and repeated biaxial bending with shear is investigated experimentally, in order to establish an evaluation method for the earthquake resistance ability of SRC structures. Frame specimen consists of a column and four beams arranged in two directions, which modelizes beam-and-column subassemblage in a real building frame. Cross sections of members are made of H-steel (column : 2H-150x30x6x9, beam : H-180x50x6x9) and four main reinforcements encased in concrete. In the test, constant vertical load at the column top and constant beam loads at tips of beams in one-direction are first applied, the latter simulating the long-term load. Then, antisymmetric, alternately repeated shear loads are applied at tips of beams in the order-direction simulating the earthquake load. Experimental parameters selected are axial thrust ratio, intensity and pattern of beam loads corresponding to the long-term load, and failure modes (column-failure type and panel-failure type). The paper discusses the effect of three-dimensional loading on the maximum strength, deformation capacity, energy dissipation capacity, and failure modes, with presenting the test results.
Faculty of Engineering, Mie Universityの論文
1989-12-20