【摘要】 根据曲线梁桥在竖直方向的弯扭耦合和水平方向的弯曲、轴向变形,导出了曲线梁单元竖直方向和水平方向的精细传递矩阵;给出了用精细传递矩阵法计算曲线梁桥竖直方向和水平方向的振动频率、振型、地震内力和变形的计算公式和步骤,并运用精细传递矩阵法对单跨简支桥进行了地震反应分析.算例表明,本方法简单、具有较高精度和效率.更多还原

【Abstract】 Considering the curved bridge’ coupling of the bending and torsion in the vertical direction,as well as the bending and axial deformation in the horizontal direction,the precise transfer matrixs of the beam elements are derived in the vertical and horizontal directions.The formulation and steps are present for calculating the horizontal and vertical vibration frequencies,vibration modes,seismic force and the deformation by the precise transfer matrix method.It has been applied to do the research the earthquake response of single-span curved bridge.The example shows that this method is simple,effective and of high precision.更多还原