【摘要】 在D值法基础上,提出了一种考虑P-Δ效应、节点柔性和初始倾斜影响的多高层半刚接钢框架的简化计算方法;分析了上述因素对半刚接钢框架工作性能的影响,表明P-Δ效应和节点柔性对钢框架的一阶层间侧移影响较显著,而初始倾斜可仅考虑其本身值的大小,无需考虑P-Δ效应对其放大作用.该方法便于手算,与精确的电算结果比较表明,该方法具有较好的精度,可满足工程设计需要.更多还原

【Abstract】 Based on D value method,a simplified computational method is proposed for semi-rigidly mul ti-sto-ry and high-rise steel frames,which takes into consideration P-Δeffect,flexibilities of connections and initial out-of-plumb ness.An investigation is conducted to analyze the effect of the above mentioned factors on behav-ior of semi-rigid steel frames.Results indicate that P-Δeffects and flexibilities of connections affect first-or-der ini tial-story drift of semi-rigid steel frames significantly,and initial out-of-plumbness can only consider the magni tude itself with out considering the amplified part of P-Δeffect.Comparison between the results given by the pre sent method and the accurate solutions provided by computer shows good agreement,and it is con-vinced that the pre sent formula could be an aid for the design work.更多还原