拉索的特征灵敏度分析  

Study on Eigen-sensitivity of Cable

作　　者：段欣[1] 刘伟庆[1] 王俊[1] 徐秀丽[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009

出　　处：《贵州大学学报（自然科学版）》2009年第4期134-136,共3页Journal of Guizhou University:Natural Sciences

摘　　要：为研究拉索参数修改对其动力特性的影响,考虑拉索的抗弯刚度建立了拉索模型,分析了拉索特征值相对于拉索的索力、抗弯刚度和质量的灵敏度,分析表明拉索的索力和抗弯刚度特征灵敏度较高,必须准确可靠的识别出拉索的索力和抗弯刚度。The main objective of our investigation has been to study the influence on dynamic character of cable by changing its parameters.The flexural stiffness of the cable is considered in the cable model to analyze the sensitivity of the eigen-value to cable tension,flexural stiffness and mass per meter.The analysis shows that the sensitivity of the eigen-value to cable tension and flexural stiffness is relatively high,so the cable tension and flexural stiffness must be estimated precisely.

关 键 词：拉索 特征灵敏度 直接求导法 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]