摘要
基于有限元软件ABAQUS,对某电灌站泵房筒体及进口控制闸整体结构进行了三维有限元数值模拟。结果表明:泵房筒体竖向全部受压,水平向应力在四边墙角外侧处较大,中部处较小。完建工况下,泵房底板边缘处基底应力过大,但其分布范围很小,集中在底板边缘的角点位置;底板中间较大区域内基底应力分布均匀,且值较小;建议对边缘地基进行强化处理,以达到主体结构对基底的强度要求。泵房基础边缘部位基底应力分布不均,可能会导致基础产生不均匀沉降。应减小泵房两侧的回填土高度,增加拉应力较大部位的配筋量,加强对泵房底板沉降、水平位移、基础受力、渗透压力等方面的监测。
Based on ABAQUS,three dimensional finite element numerical analysis had been carried out on the massive structure including the cylindrical shell of pump room and the import control gate of an electric pumping station.The results show that,on vertical direction,the cylindrical shell of pump room is in compression.The horizontal stress is higher than other places at the outside corners around the wall edges,while,it is relatively lower at central part.After construction,the basal stress at edges of the base slab is extremely high,while the distribution range is very small,only concentrating on the base slab corners.For most area in the middle part of the base slab,the distribution of basal stress is homogeneous and its value is lower.Foundation treatment is suggested to put forward to achieve enough intensity of the basement.The inhomogeneous distribution of the basal stress may result in differential settlement of the pump room basement.Therefore,the height of backfill should be reduced on both sides of the pump room,and the amount of reinforcement should be increased in the parts of higher tensile stress;the monitoring should be paid more attention on settlements and horizontal displacements of the base slab,the basal stress and the seepage pressure under the base slab.
出处
《人民黄河》
CAS
北大核心
2013年第7期116-119,共4页
Yellow River
关键词
泵房结构
ABAQUS
三维有限元法
筒体
进口控制闸
pump room structure
ABAQUS
three dimensional finite element method
cylindrical shell
import control gate
