摘要
为研究钢筋混凝土空心高墩在不同壁厚情况下振动特性的变化规律,引入壁厚系数,推导出模态频率与壁厚系数的函数关系。利用Abaqus有限元软件分别建立了24组钢筋混凝土空心高墩实体模型和线单元模型,运用Lanczos算法提取结构前三阶顺桥方向的模态频率,并与理论模型的计算值对比分析。结果显示:当墩高、截面形式一定时,随着壁厚系数降低,钢筋混凝土空心高墩的质量大幅度减少,结构的模态频率仅小幅度提高。
In order to study the variation of vibration characteristics of reinforced concrete hollow high piers under different wall thickness, wall thickness coefficient is introduced and the functional relationship between modal frequency and wall thickness coefficient is deduced. 24 groups of solid and line element models of reinforced concrete hollow high piers are established by using Abaqus finite element software. The modal frequencies of the first three orders along the bridge direction are extracted by Lanczos algorithm, and are compared with the calculated values of the theoretical model. The results are shown as following: when the pier height and section form are fixed, the mass of reinforced concrete hollow high pier decreases greatly and the modal frequency of the structure increases slightly with the decrease of wall thickness coefficient.
作者
潘桂超
田石柱
PAN Guichao;TIAN Shizhu(School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011;Jiangsu Key Laboratory of Structure Engineering, Suzhou 215011)
出处
《常州工学院学报》
2019年第1期65-71,共7页
Journal of Changzhou Institute of Technology
基金
国家自然科学基金项目(51778394)
关键词
空心高墩
振动特性
模态分析
ABAQUS
hollow high pier
vibration characteristics
modal analysis
Abaqus
