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首页> 外文期刊>Earthquake engineering & structural dynamics >Experimental investigation of conditions of lateral shear reinforcements in RC columns accompanied by buckling of longitudinal bars
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Experimental investigation of conditions of lateral shear reinforcements in RC columns accompanied by buckling of longitudinal bars

机译：Experimental investigation of conditions of lateral shear reinforcements in RC columns accompanied by buckling of longitudinal bars

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This study presents a cyclic load test of four RC columns to obtain data on stresses and strains on lateral shear-reinforcing bars that contact buckled longitudinal reinforcing bars. The specimens include columns laterally jacketed with all-elastic fibre-reinforced polymer (FRP) sheets. The buckling lengths and modes in the longitudinal bars of the four column specimens stabilized at a buckling deflection (= lateral deformation of buckled longitudinal bar) from 0.3 to 0.6 mm. The yield portion ratio r_by of shear reinforcement around the buckled longitudinal bars was introduced as an index of the development of buckling conditions. Here, the yield portion ratio r_by was defined as the ratio of the length of the region where the shear reinforcements yield l_by, to the buckling length l_b. The r_by values of the tested columns ranged from 0.45 to 0.76. The test results show that the buckling stress and the specific compressive stress of the longitudinal bars in the columns were smaller than those of the bare bars.

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