【摘要】 建立了一种土-偏心结构相互作用简化模型,研究了考虑土-结构相互作用因素后结构平扭耦联反应。采用拉格朗日能量法推导了结构的运动方程,并结合算例,用振型分解法对结构的平扭耦联反应进行了分析,讨论了扭平频率比、偏心率和土-结构相互作用影响系数对结构平扭耦联反应的影响。计算结果表明,土-偏心结构相互作用体系与刚性地基上结构有明显差别,且随着地基土的变软,这些差别更为明显。更多还原

【Abstract】 A model for soil-asymmetric structure interaction system is established to study the lateral-torsional coupling response.The characteristic equation is given as the result of the application of the Langange energy equation,and lateral-torsional coupling response in practical structure is studied by modal analysis method.The effect of torsional-lateral frequency ratio,asymmetric ratio and soil-structure interaction affecting parameter on the lateral-torsional coupling response are discussed.The results show that the difference between a soil-asymmetric structure interaction system and a rigid base structure is evident.The softer the soil is,the more evident the difference is.更多还原