주기하중을 받는 골조강판벽의 실험연구

Abstract

Experiments were performed to study the cyclic behavior of framed steel walls with thin web plates. Five specimens of single-bay and three-story steel plate walls were tested for cyclic lateral load. The parameters for the test specimens included the p1ate thickness and the column strength. Based on the test results. the strength. deformability and energy dissipation capacity of the framed steel walls were studied. The test results showed that the behavioral characteristics of the framed steel walls with thin web plates were different in many aspects from those of the conventional braced frame. and the steel wall with a stiffened web plate exhibited cantilever action. high strength. and low ductility. With the framed steel p1ate walls, local plate buckling and tension-field action developed in the thin web plates, and plastic deformation was uniformly distributed along the wall's height. As a result, the framed steel plate walls exhibited combined flexural and shear deformation, but they a1so showed high strength and energy dissipation capacity. Moreover. such walls have high deformability, which was equivalent to that of the conventional moment frame. Frame members such as columns and beams, however, must be designed to resist the tension-field action of the thin web plates. If the column does not have sufficient strength. and if its sections are not compact enough, the overall strength of the framed steel wall might be significantly decreased by the development of the soft-story mechanism. The framed steel walls with thin web plates have advantages. such as high deformability and high strength. Therefore. they can be used as ductile e1ements in earthquake-resistant systems.