摘要
以火电厂冷却塔为例,建立了刚性地基和考虑地基、基础、上部结构相互作用的三维有限元模型。通过输入不同的地震动,采用时程分析方法对冷却塔进行地震反应分析,得到了冷却塔在两种情况下节点最大水平位移、绝对加速度随X支柱、塔筒高度变化的规律;并对两种情况下的地震响应结果进行了对比分析,结果表明,该类构筑物在地震作用下,相互作用的影响不容忽略。
It＇s regarding the super large cooling tower of thermal power plant as the research example, and building two finite element models in rigid ground and subsoil-foundation-superstructure interaction situation. Seismic motion record is selected for inputs. Earthquake response analysis for cooling tower bay using time history analysis. The change law of two finite element models of cooling tower was obtained, that the maximal and horizontal displacement and absolute acceleration of nodes along the height of X pillar and tower drum.Comparative analysis has been made for the earthquake response of two models, indicating that the influence of interaction does not allow to neglect for this kind of structures under the seismic effect.
作者
李辉
LI Hui(Department of Architectural Engineering,Shaanxi Railway Institute,Weinan 714000,China)
出处
《价值工程》
2018年第28期144-146,共3页
Value Engineering
关键词
刚性地基
相互作用
时程分析
地震反应分析
rigid-foundation
interaction
time history analysis
seismic response analysis
