摘要
根据渡槽结构特点,采用有限条划分渡槽槽身,推导出渡槽槽身结构的单元刚度矩阵、相容质量矩阵的显式表达式;渡槽支架采用空间梁单元模拟;联接槽身和支架的盆式橡胶支座采用弹性元件单元模拟。编程程序具体计算了某大型渡槽的模态,并用ANSYS对大型渡槽进行模态分析,计算结果表明:该模型计算的渡槽结构的固有频率和ANSYS计算结果接近。模型可用于大型渡槽的动力分析。
Based on structural characteristic of aqueduct, the aqueduct body is discretized into finite strips, and then explicit formulae of element stiffness and mass matrix of the aqueduct body are derived. The brace of aqueducts is simulated by using beam elements. The rubber supports with basin shape linking the brace and the aqueduct body are simulated by using spring elements. By compiling Matlab program, the modes and the vibration frequencies of a large-scale aqueduct are examined. The computation results with Matlab are good, compared with ANSYS software,. The model is practical for dynamic analysis of the large-scale aqueducts.
出处
《世界地震工程》
CSCD
北大核心
2007年第1期73-79,共7页
World Earthquake Engineering
基金
河南省高校杰出科研人才创新工程基金资助项目(2003011)
河南省自然科学基金资助项目(2004570002)
关键词
有限条
大型渡槽
动力分析
模型
finite strip
large-scale aqueduct
dynamic analysis
model
