一榀新型人字支撑复合结构的动力性能研究

王新玲; 赵更歧; 张念征

doi:10.13204/j.gyjz200602007

一榀新型人字支撑复合结构的动力性能研究

doi: 10.13204/j.gyjz200602007

1.
郑州大学土木工程学院郑州 450002

基金项目:

河南省自然基金资助项目(0411050900)

详细信息

作者简介:
王新玲女 1963年8月出生教授东南大学博士研究生

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- 文章访问数: 80
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- 被引次数: 3
出版历程
- 收稿日期: 2005-09-26
- 刊出日期: 2006-02-20

THE DYNAMIC ANALYSIS OF A NEW "Λ" BRACES COMPOUND STRUCTURE

1.
College of Civil Engineering,Zhengzhou University Zhengzhou 450002

摘要

摘要: 对用于多层住宅的人字支撑复合结构进行了动力性能的分析。根据结构动力学原理推导了该结构动力特征方程,分析了一榀复合结构体系的支撑刚度、层数和楼层质量变化对动力特征(固有频率)的影响。根据动力特征方程计算了结构固有频率值,结果表明,增大支撑截面对提高结构的固有频率即抗侧刚度有明显作用,且随支撑截面尺寸增大,固有频率单调增加;增加复合结构的层数,固有频率减小,但变化规律趋于收敛;同时绘出了复合结构第一固有频率和楼层质量的关系曲线。最后,根据动力特征方程计算结果,拟合了综合考虑柱撑截面抗侧刚度、楼层质量及结构层数影响的固有频率简化计算公式,与理论计算结果比较,符合较好。
- 住宅结构 /
- 动力分析 /
- 复合结构 /
- 固有频率
Abstract: The dynamic property is analyzed for a new braces compound structure of mult-i story residence. Based on dynamics theory of structure and the equations of dynamics characteristics of the structure, the effects of different areas of the brace, numbers of story and mass of floor on dynamics characteristics are analyzed. The calculating results show the action of braces advances the frequency and shear stiffness of the structure, and the frequency would increase monotonously with adding of brace section. The frequency would reduce with adding numbers of story and mass of floor. According to the frequencyc s calculation of the equations of dynamics characteristics, frequency curves are draw up and a frequency formula considering the stiffness of column and braces, floorsc numbers and mass of the compound structure is obtained. The formula is simple and consonant with theory equation.
- residence structure /
- dynamic analysis /
- compound structure /
- natural frequency