CAJ | 학술논문

为正确采用动水压力计算方法，提出了一种新的深水桥梁墩水耦合计算方法———结合法，即将Morison方程与计算流体力学相结合，分析深水桥梁墩水耦合抗震问题。 ANSYS-CFX模型计算表明：结合法能较好地进行墩水耦合抗震分析；深水环境使墩顶最大弹性位移减小，最大刚体位移增大，结构整体变形增大；刚体运动附加动水力对桥墩起主要作用，但应同时考虑弹性振动引起的动水压力。
위정학채용동수압력계산방법，제출료일충신적심수교량돈수우합계산방법———결합법，즉장Morison방정여계산류체역학상결합，분석심수교량돈수우합항진문제。 ANSYS-CFX모형계산표명：결합법능교호지진행돈수우합항진분석；심수배경사돈정최대탄성위이감소，최대강체위이증대，결구정체변형증대；강체운동부가동수력대교돈기주요작용，단응동시고필탄성진동인기적동수압력。
To adopt a right method to calculate hydrodynamic pressure,a novel method,combining the Morison equation with CFD (computational fluid dynamics),for calculating the seismic responses of a deep-water bridge under pier-water coupling was proposed. The results based on the ANSYS-CFX model show that the proposed method can calculate the seismic responses of a deep-water bridge under pier-water coupling effectively. A deep-water environment will decrease the maximum elastic displace-ment at pier top,but it will increase the maximum rigid displacement and the total stsructure displacement. Additional hydrodynamic pressure generated by rigid motion plays a major role,and the effect of elastic vibration must be considered.