[1]何伟,朱亚飞,何容.环境温度对钢管混凝土拱桥吊杆振动影响及张力测定研究[J].地震工程与工程振动,2016,36(04):217-225.[doi:10.13197/j.eeev.2016.04.217.hew.026]
 HE Wei,ZHU Yafei,HE Rong.Research on vibration properties of suspenders of concrete filled steel tube arch bridges affected by temperature and tension measuring methods[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2016,36(04):217-225.[doi:10.13197/j.eeev.2016.04.217.hew.026]
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环境温度对钢管混凝土拱桥吊杆振动影响及张力测定研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
36
期数:
2016年04
页码:
217-225
栏目:
出版日期:
2016-08-15

文章信息/Info

Title:
Research on vibration properties of suspenders of concrete filled steel tube arch bridges affected by temperature and tension measuring methods
作者:
何伟1 朱亚飞2 何容1
1. 华北水利水电大学 土木与交通学院, 河南 郑州 450045;
2. 商丘学院 土木工程学院, 河南 商丘 476113
Author(s):
HE Wei1 ZHU Yafei2 HE Rong1
1. School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
2. School of Civil Engineering, Shangqiu University, Shangqiu 476113, China
关键词:
钢管混凝土拱桥吊杆温度张力频率
Keywords:
concrete filled steel tube arch bridgesuspendertemperaturetensionfrequency
分类号:
U441+.3;TU37
DOI:
10.13197/j.eeev.2016.04.217.hew.026
摘要:
为了提高实际工程中吊杆张力的测试精度,基于Euler-Bernoulli梁理论,考虑外界环境温度变化以及吊杆预应力作用对吊杆振动的影响,建立了变温时吊杆自由振动运动方程,并根据长吊杆边界条件,给出了吊杆张力与温度变化、横向振动频率关系式,分析了吊杆热过屈曲温升条件。采用数值模拟方法与工程实例进行了验证。计算结果显示,环境温度相同时,张力增大吊杆同阶振动频率增大;当张力相同时,环境温度升高,吊杆同阶振动频率降低。对于季节温差较大的地区,吊杆张力测试时环境温度影响不可忽略。考虑温度影响时,关系式计算精度较高,更接近真实值,且方程为显式,实用性强。
Abstract:
In order to improve the calculation accuracy of the suspenders tension in engineering practice, based on the theory of Euler-Bernoulli beam, the free vibration equation of suspender is established, which has considered the influences of outside temperature variations and prestressed of suspender on suspender vibration. The relationship between suspender tension with temperature change and lateral vibration frequency is also given according to the long suspender boundary condition. Then the thermal post-buckling temperature rise conditions of suspenders have been suggested. In order to verify the rightness and feasibility of the theory, numerical simulation method and engineering example are used. The results show that the same order vibration frequency of suspender increases with its tension increasing when the environmental temperature is the same. The same order vibration frequency of suspender decreases with environmental temperature increasing when the tension of suspender is the same. So the environmental temperature can not be ignored when suspender tension is tested in the area where the difference of seasonal temperature is large. The formula has higher accuracy and has more close to the real value when considering the effect of temperature, and it is also explicit and strong practicability.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-06-17;改回日期:2015-09-06。
基金项目:河南省基础与前沿技术研究项目(152300410241);河南省教育厅研究计划项目(13B130110);郑州市科技局科技计划项目(20130844)
作者简介:何伟(1973-),男,副教授,博士,主要从事工程结构损伤识别与桥梁健康监测研究.E-mail:hwhr123@163.com
更新日期/Last Update: 1900-01-01