论文部分内容阅读
针对无限元边界模拟地基可解决使用截断地基时地震波在地基中的能量无法逸散的问题,以观音岩重力坝为例,采用混凝土塑性损伤模型和无限元人工边界,计算了重力坝在不同地震荷载作用下的动力时程响应,验证了无限元边界对地震波能量的逸散作用,比较了材料损伤引起的材料刚度降低对坝体响应的影响,获得了不同地震荷载下坝体损伤的发展规律。
The simulation of foundation for the boundary of infinite element can solve the problem that the seismic energy can not escape in the foundation when the truncated foundation is used. Taking Guanyinyan gravity dam as an example, the plastic damage model of concrete and the infinite artificial boundary are used to calculate the influence of gravity dam on different earthquakes The dynamic time-history response under load is applied to verify the energy dissipation of seismic wave from the boundary of infinite element. The effect of material stiffness reduction on dam response is compared with that of material damage, and the development of dam damage under different earthquake loads is obtained .