【摘要】 采用三维有限元法及时程分析法研究古田溪三级平板支墩坝的动应力问题。提出了加劲梁对支墩横向振动影响的简化计算 ,考虑了坝—水动力相互作用 ,用半无限元模拟水体、岩基的无限域 ,并研制了相应的有限元程序。利用该程序计算了顺河向及横河向地震作用支墩的动应力响应 ,得出了一些有价值的结论更多还原

【Abstract】 Dynamic stresses of the Gutianxi third cascade buttress dam are studied with FEM and step-by-step integration procedure in this paper.A simplified calculation of influence of stiffeners on buttress transverse vibration is proposed, dam-water dynamic interaction considered, infinite area of water body and rock foundation simulated with semi-infinite elements, and the relevant FEM program developed. By using this program, stress response of buttresses is computed with longitudinal and transverse earthquake waves and some valuable results are obtained.更多还原