模态理论在空间网格结构无损探伤的应用  

Application of Mode Theory in Spatial Lattice Structure Non-destructive Testing

作　　者：贾永峰[1] 刘美爽[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《森林工程》2006年第2期57-59,67,共4页Forest Engineering

摘　　要：空间网格结构体系整体刚度好,能够满足多种建筑结构形式的要求。但在长期服役期间,结构可能产生各种损伤。这些损伤可能导致结构整体的破坏,因此,必须及时进行结构无损探伤。本文比较详细地介绍了基于模态理论的无损探伤方法,即频率法、能量法、柔度矩阵法等。同时,介绍了国内外基于模态理论的空间网格结构无损探伤的研究进展。The whole rigidity of the spatial lattice structure is good, which can suit the needs of many structure forms. But due to long-term service, the structure may appear all kinds of damages. If the damages can＇t be found in time, they may cause serious damage on the whole structure, Therefore, it is necessary to detect the structure damages with non-destructive testing methods in time. In the paper, some non-destructive methods based on mode theory such as frequency method, energy method and matrix method are introduced in detail. Meanwhile, the research development of spatial lattice structure non-destructive detection based on mode theory at home and abroad is reviewed.

关 键 词：空间网格结构 无损探伤 模态理论 

分 类 号：TU317[建筑科学—结构工程]