塩害により損傷を受けた実在RC造公営集合住宅の正負繰り返し水平加力実験

概要

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An investigation on damage due to chloride attack on a reinforced concrete public housing was carried out before the horizontal cyclic loading test. Chloride attack is caused by using sea sand without removing sodium chloride. The compressive strength of concrete, cover thickness and carbonation were examined. As a result of this investigation, the deterioration of the existing R/C public housing was recognized from the point of the durability for the R/C buildings.In order to observe the overall seismic behavior of the existing R/C public housing damaged due to chloride attack, a horizontal cyclic loading test was carried out on the building site. This loading test indicated that the behavior of this building was not affected by the damage and deterioration. The horizontal loading capacity of this building was about four times the value determined using an elasto-plastic analysis of a pure frame structure. This fact is the cause of using partition or outer walls made of concrete block. However, the seismic capacity and ductility of this existing building were not high. Assurance of safety and serviceability are important for corrosion damaged buildings.
琉球大学工学部の論文