CAJ | 학술논문

目前在对软土地基上的闸涵类水工结构进行动力分析时大多采用无质量地基模型，针对其无法有效考虑地基辐射阻尼效应这一问题，基于ADINA软件平台和动力黏弹性边界理论，提出弹簧阻尼元件在模型截断边界的施加与外源波动在边界的输入方法。将上述方法应用到基于国内某水闸闸室-水体-地基系统的地震动反应分析当中，并与传统无质量地基模型的计算结果进行对比。计算结果表明，考虑地基辐射阻尼后闸室主体结构的地震动响应有所减小，且该方法在计算中具有较好的精度和稳定性。
목전재대연토지기상적갑함류수공결구진행동력분석시대다채용무질량지기모형，침대기무법유효고필지기복사조니효응저일문제，기우ADINA연건평태화동력점탄성변계이론，제출탄황조니원건재모형절단변계적시가여외원파동재변계적수입방법。장상술방법응용도기우국내모수갑갑실-수체-지기계통적지진동반응분석당중，병여전통무질량지기모형적계산결과진행대비。계산결과표명，고필지기복사조니후갑실주체결구적지진동향응유소감소，차해방법재계산중구유교호적정도화은정성。
Massless foundation model is usually used in most dynamic analysis of lock and culvert on soft foundation, but the effect of foundation radiation damping is neglected in this approach. In order to overcome the problem, spring-damping element and seismic wave are applied to the boundary of the model on the finite element analysis platform ADINA with method of viscous-spring boundary successfully. The approach was applied to seismic response analysis of a domestic sluice-water-foundation system. The results show that compared to the traditional massless foundation model, the presented model considering radiation damping of foundation can reduce dy-namic response of sluice chamber effectively. Therefore, the proposed method is precise and stable in calculating.