张  雷，秦乃兵，范思冬
    (河北理工大学建筑工程学院，唐山063000)

[摘要] 针对索-混凝土组合梁这一新型结构，利用有限元分析软件ANSYS进行自振特性分析，求出结构的自振频率及相应的振型。随后分析了索-混凝土组合梁结构各项参数对自振特性的影响。这些参数包括索截面面积、索初始应变、梁跨度、刚性杆高度。
[关键词] 索-混凝土组合梁；自振特性分析

Free vibration characteristics analysis on the cable-concrete combined beam based on ANSYS
Zhang Lei,  Qin Naibing,  Fan Sidong
(College of Civil and Arthitechture Engineering,Hebei Polytechnic University,Tangshan Hebei 063000, China)

Abstract: Aiming at the new structure of cable-concrete combined beam, made the free vibration characteristics analysis by using ANSYS, it made out the natural frequency and mode shapes of the structure. Then it researched the affection of every parameter to the free vibration of structure. The parameter contains cable areas, cable initial strains, beam lengths and rigid link heights.
Keywords: cable-concrete combined beam;  free vibration characteristics analysis