CAJ | 학술논문

在设计动力机器基础时,需要对基础进行动力分析,可以依据的动力分析方法包括我国<动力机器基础设计规范>方法、Lysmer比拟法和美国<基础工程手册>中描述的方法等.大型地震模拟振动台的基础与一般的动力机器基础有着明显区别,具有尺寸大、推力大和工作频率范围宽等特点,对于设计这类基础时能否继续沿用上述动力机器基础的计算方法,本文进行了分析和探讨.以某单位6m×6m三向六自由度大型地震模拟振动台的基础为例进行了计算分析,结果表明,美国<基础工程手册>中的方法,在分析计算大型振动台的基础时具有更高的准确性和可靠性.
재설계동력궤기기출시,수요대기출진행동력분석,가이의거적동력분석방법포괄아국<동력궤기기출설계규범>방법、Lysmer비의법화미국<기출공정수책>중묘술적방법등.대형지진모의진동태적기출여일반적동력궤기기출유착명현구별,구유척촌대、추력대화공작빈솔범위관등특점,대우설계저류기출시능부계속연용상술동력궤기기출적계산방법,본문진행료분석화탐토.이모단위6m×6m삼향륙자유도대형지진모의진동태적기출위례진행료계산분석,결과표명,미국<기출공정수책>중적방법,재분석계산대형진동태적기출시구유경고적준학성화가고성.
When designing dynamic machine foundations, dynamic analysis of the foundation is needed. Reliable methods of such analysis include GB 50040-96 method, Lysmer method and the method described in Foundation Engineering Handbook. Unlike general dynamic machine foundations, shaking table foundations are large-sized, suffer great forces and have a wide range of working frequency. So whether the aforementioned methods can be used to deal with this kind of foundation becomes ambiguous. This paper focuses on finding an accurate and reliable method. After calculating a foundation of a 6m x 6m shaking table using different methods, the result shows that the method introduced by Foundation Engineering Handbook is more accurate and reliable.