摘要
小浪底南岸引水口进水塔为大体积混凝土结构,其体型和边界受力情况都较为复杂。本文采用三维有限元方法,根据进水塔结构的特点和受力条件,分6种工况对其进行抗震性能分析,研究其应力、位移和内力的分布规律,并对有限元法和结构力学方法的内力成果进行对比分析。计算结果表明,在地震力作用下,进水塔的变形满足结构设计要求,但在抗震薄弱部位内力较大,在结构设计时需采取特殊措施,以确保塔体结构的安全。本文的计算结果为进水塔结构设计提供了科学依据。
The intake tower on the south bank of Xiaolangdi Reservoir is a big concrete structure with complex shape and boundary conditions.By use of three dimensional finite element method,the static and dynamic analysis of the intake tower are completed for six loading cases respectively and the results of stresses and displacements are presented. Then,the results of finite element method are compared with those of structure mechanics method. Under the earthquake loads, the deformations of intake tower satisfy the requirement of structure design. The maximum internal forces at vulnerable position of the intake tower are great,so some special treatments are needed to keep safety of the intake tower. The results in this paper may be served as the basis of structure design of the intake tower.
出处
《世界地震工程》
CSCD
2002年第4期111-115,共5页
World Earthquake Engineering
基金
河南省杰出青年科学基金资助项目
关键词
进水塔
有限元
结构应力
抗震分析
intake tower
finite element
structure stress
seismic analysis
