Vibration Analysis of Reinforced Concrete Simply Supported Beam versus Variation Temperature

被引：4

作者：

Liu, Hanbing ^{[1
]}

Wang, Hua ^{[1
]}

Tan, Guojin ^{[1
]}

Liu, Ziyu ^{[1
]}

Cheng, Yongchun ^{[1
]}

机构：

[1] Jilin Univ, Coll Transportat, Changchun 130022, Jilin, Peoples R China

来源：

SHOCK AND VIBRATION | 2017年 / 2017卷

基金：

中国国家自然科学基金;

关键词：

MEASURED MODAL FREQUENCIES; DAMAGE DETECTION; STRUCTURAL DAMAGE; VARIABILITY; BRIDGE; GIRDER;

D O I：

10.1155/2017/4931749

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

It is well known that temperature has great influence on modal characteristics of bridges. The relationship between them has been studied by using statistical mathematics, numerical analysis, and field's monitoring methods, which have relatively narrow applicability. Therefore, it is necessary to analyze their relationship theoretically. In this paper, the relationship between temperature and modal characteristics of the simply supported beam is investigated based on theoretical calculation method. Firstly, the temperature field is analyzed to find out the main factors that lead to the changes of modal characteristics. Secondly, the dynamic equations of simply supported beam under the effect of temperature are established. Next, a test beam is constructed to validate the proposed calculation method experimentally. The calculated results are in good agreement with those from the experiment. Finally, the proposed method is successfully applied to real engineering.

引用

页数：20

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