角形鋼管柱・H形はり接合部の局部耐力推定式 : 角形鋼管柱溶接接合部の実験的研究2
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概要
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The paper examines the local failure of welded RHS-column to H-beam connections with exterior diaphragm in rigid steel frames. Based on a number of simplified model test results reported in the previous paper (Ref. 1), the empirical formulae predicting the local strength of connections are derived by the dimensional analysis and the regression analysis. The empirical formulae obtained here are as follows : For the maximum load, [numerical formula]…(4) For the yield load, P_<cy>=0.58 P_<cmax>…(5) The limits of application are : B/T=22〜67, h_D/B≦0.2, t/T=0.75〜2.0 The proposed formulae are applicable to the following connections. 1) Connections fabricated by high strength steel grade SM 50 A or SM 58 Q. 2) Connections stiffened by triangular plates. 3) Connections subjected to tension or compression load on one side only. The strength of actual RHS-column to H-beam connections are predicted by the proposed formulae with sufficient accuracy by substituting Pc for M/(d-t). For RHS fabricated by four steel plates, the proposed formulae overestimate the strength of the connections by 20%.
- 1985-06-30
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