摘要
为了得到地上式非隔震钢筋混凝土矩形贮液结构的液-固耦合地震响应,假定液体为不可压缩,考虑液体表面重力波的影响,综合考虑单元选取、地震动输入方法、网格密度、收敛性和液-固耦合的实现等因素,研究单格贮液结构中地震作用对液体晃动高度、壁面位移、等效应力和等效应变的影响,同时分析不同液位高度下波高、壁板位移和应力的变化规律。结果表明:(i)液体的晃动幅度、等效应力、壁板位移峰值均随着地震烈度的增大而增大;(ii)液位越高,应力、应变和壁板位移值越大,但晃动幅度相对变小;(iii)液量越少,液体晃动幅度越大。
In order to obtain the liquid–solid coupling seismic response of non-isolation overground rectangular reinforced-concrete liquidstorage structures, assuming that the liquid is incompressible, and considering the influence of gravity wave on the liquid surface, unit selection, seismic input method, grid density, convergence and liquid–solid coupling, the liquid sloshing height, wallboard displacement, equivalent stress, and equivalent strain unde r different seismic waves about single-cell liquid storage structures are discussed, and the variation laws of wave height, wallboard displacement and stress are analyzed for different liquid levels. The results indicate that:(i) liquid sloshing amplitude, wallboard displacement and equivalent stress increase with the increase of seismic intensity;(ii) the higher the liquid level is, the greater the values of stress, strain and wallboard displacement are, but the shaking amplitude becomes smaller;(iii) the lower the liquid level is, the higher is.
出处
《土木工程学报》
EI
CSCD
北大核心
2014年第S1期42-47,共6页
China Civil Engineering Journal
基金
国家自然科学基金(51368039
51478212)
教育部博士点基金(博导类)(20136201110003)
甘肃省建设科技攻关项目(JK2013-9)
兰州市科技攻关项目(2014-4-94)
关键词
地震
混凝土
矩形贮液结构
流–固耦合
earthquake
reinforced concrete
rectangular liquid storage structure
fluid–solid coupling
