摘要
强震作用下重力坝上部闸墩动应力较大。结合工程实例,分别采用振型分解反应谱法和时程法,对不同方案重力坝高闸墩整体结构和墩墙结构的动力特性进行对比研究。研究结果表明,增加墩墙刚度的同时减小坝体溢流堰附近的质量,可有效减小地震作用下上部墩墙大应力区域,减震效果明显。
The dynamic stress of upper pier on the gravity dam tends to be larger under strong earthquake. The dynamic properties of a gravity dam under different schemes of dam-high pier structure and pier-wall structure are analyzed by modal response spectrum method and time history method respectively. The results show that the method by increasing the stiffness of pier-wall and at the same time reducing the mass of main body structure near to overflow weir can effectively reduce the seismic stress of upper part of dam structure.
出处
《水力发电》
北大核心
2014年第4期42-45,共4页
Water Power
基金
水利部公益性行业专项经费项目(201301023)
关键词
抗震设计
重力坝
高闸墩
动力特性
aseismic design
gravity dam
high pier, dynamic characteristic
