鉄骨骨組と鉄筋コンクリート耐震壁との合成構造に関する研究

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The purpose of this investigation is to promote a composite structure for low-rise buildings. The composite structure of steel frames of wide flange sections and infilled concrete walls casted in-situ is considered to be recommendable. To establish a design provision of the composite structures, firstly, the ultimate strength of headed stud connectors in walls are experimentally evaluated. Secondly, elasto-plastic behaviors of four frame specimens on one third scale model are investigated under a constant axial load and a repeated and reversed horizontal load. The four specimens are composed of two types, in which bendings of columns are subjected about strong and weak axes respectively. One of steel frames in each type, prior to casting the concrete wall, is preloaded until plastic hinges are fully developed. The test results are summarized as follows. (1) The restoring force and displacement relationship of composite structures appears as favourable summation of the strengths of the steel frame and the concrete shear wall. Brittleness of the concrete shear wall is remarkably improved and the energy absorbing capacity is well maintained. (2) This structures may be successfully introduced to strengthen damaged steel frames. (3) For a prediction of the ultimate strength of this structures, a numerical method, which is based on the concrete shear wall by a diagonal strut and a simple plastic evaluation of the steel frame, is proposcd.
社団法人日本建築学会の論文
1980-11-30

鉄骨骨組と鉄筋コンクリート耐震壁との合成構造に関する研究

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