摘要
在结构-地基体系动力有限元研究的基础上,针对闸底板结构特殊、受力条件复杂使得其抗震稳定分析难度较大的问题,以某水闸工程为例,考虑地震动水压力作用、闸室结构的空间耦联及闸室结构与地基相互作用的影响,利用通用有限元软件ANSYS对闸室与地基整体结构进行了抗震计算,并对比分析了反应谱法与时程分析法动力计算结果,同时对该水闸的安全稳定性进行了评价。结果表明,闸底板的转折部位承受拉应力较大,配筋及实际施工过程中应予以重点关注。反应谱法与时程分析法的动力分析结果具有一致性,但反应谱法对地基承载力计算的结果比时程分析的结果保守。
Based on structure and foundation system dynamic element study,the seismic response of a sluice structure and foundation system is con-ducted by the finite element software for solving seismic stability difficultly because of special floor structure and complex stress conditions. The effect of seismic water pressure,spatial coupling of sluice structure and the interaction of structure and foundation are considered. The results of ob-tained by the response spectrum method and the time history analysis are compared,meanwhile the security and stability of the system are evalua-ted. The results show that the large tensile stress are appeared in the turning parts of the sluice structure bottom and should pay more attention on the reinforcement and the actual construction process. In addition,the dynamic response spectrum method and time history analysis method has the consistency of the results,but the result of foundation bearing capacity calculated by the dynamic response spectrum are more conservative than what calculated by time history analysis.
出处
《人民黄河》
CAS
北大核心
2014年第12期101-103,106,共4页
Yellow River
关键词
水工结构
有限元分析
水闸-地基系统
反应谱法
时程分析法
hydraulic structure
finite element analysis
sluice structure and foundation system
response spectrum method
time history analysis method
