水闸结构抗震分析的悬臂梁振型分解反应谱法  

Cantilever mode response spectrum method for seismic analysis of sluice structures

作　　者：叶志才[1,2] 孙立国[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098 [2]宿迁市水利局,江苏宿迁223800

出　　处：《河海大学学报（自然科学版）》2009年第4期437-440,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50779011);国家重点基础研究发展计划(973计划)(2007CB714104);江苏省水利厅计划项目(2005027)

摘　　要：结合工程实际,在考虑地震动水压力作用与地基弹性影响的基础上,提出了空间悬臂梁水闸结构分区规则,导出了悬臂梁柔度计算公式.利用该计算方法对大涧河水闸进行了抗震计算,得到了水闸结构的自振频率及底板应力,并与商业软件MSC.MARC的计算结果进行了比较.结果表明,2种方法的计算结果较为一致.这说明本文提出的水闸结构抗震分析方法是合理的,可以应用于大中型水闸的抗震分析.Based on practical engineering experience, zoning principles for spatial cantilever-based sluice structures are put forward with consideration of the effects of seismic hydrodynamic pressure and foundation elasticity. A formula for cantilever flexibility is proposed. The seismic response of Dajianhe Sluice was calculated using this method. The natural vibration frequencies of the sluice structure and the stress on the bottom plate were obtained and compared with the results calculated with the commercial software MSC. Marc. The results show that the two models agree well, and the present method is feasible and can be applied in the seismic analysis of medium-size and large sluices.

关 键 词：水闸 地震 振型分解反应谱法 悬臂梁柔度 地基弹性 

分 类 号：TV312[水利工程—水工结构工程]