지진피해를 받은 철근콘크리트 지진피해도 판정

In damage investigation of building structures suffering from earthquake, estimation of residual seismic capacity is essential in order to access the safety of the building against aftershocks and to judge the necessity of repair and restoration. It has been proposed that an evaluation method for post-earthquake seismic capacity of reinforced concrete buildings based on the residual energy dissipation capacity (the residual seismic capacity ratio )in lateral force-displacement curve of structural members. The proposed method was adopted in the Japanese "Damage Level Classification Standard" revised in 2001. This study is conducted to modify the model for crack width and the deformation relationship and to evaluate the residual seismic capacity of RC column. The model was used to evaluate the residual seismic capacity of structural members in the Standard. Experimental tests with positive and negative cyclic loading was carried out using RC building column specimens. Deformability and member proportion was used for parameters of test. From the test results, the following conclusions were deduced: (1) The proposed model agrees well with the experimental result(crack width - deformation relationship) than the model used in Japanese Standard. (2) It is appropriated that the residual seismic capacity of RC buildings damaged by earthquakes is evaluated using the proposed method.