高耸塔结构动力特性的监测与分析
|
摘要
使用适合于高柔结构的测试系统和测试技术， 监测了中央塔、陕西塔和天津塔在环境振动激励下不同高程的加速度反应。使用在ＭＡＴＬＡＢ 语言环境下编制的数据处理、分析、模态识别程序在微机上对各测点输出信号进行了处理、分析、识别得出了３ 座塔结构平动前１０ 阶模态频率和前３ 阶模态阻尼比，中央塔和陕西塔前７ 阶模态振型、天津塔前５ 阶模态振型； 识别得出了３ 座塔结构转动前２ 阶模态频率和阻尼比。通过对识别结果的讨论分析， 作者认为： 分析方法和程序成功、可靠； 得出的结果符合常规认识， 具有较好精度， 满足工程需要。高耸塔结构原型脉动测试与模型试验， 理论计算结果进行对比相互补充， 对提高电视塔结构的抗震设计水平和防震减灾能力具有重要意义
The acceleration responses of Central, Shanxi and Tianjin television and broadcasting towers in environment vibration are measured The output signals are processed and analyzed in personal computer by using the programs in MATLAB language The first ten shear mode frequencies and the first three damping ratios of all three towers, the first seven shear vibration modes of Central and Shanxi towers, the first five shear vibration modes of Tianjin tower, and the first two torsional mode frequencies and damping ratios of all three towers are gotten by using the method of identification The methods and programs used in the paper are successful and reliable The results with important meaning for aseismic design and disaster reduction of television tower have fine precision and can meet the engineering needs
The acceleration responses of Central, Shanxi and Tianjin television and broadcasting towers in environment vibration are measured The output signals are processed and analyzed in personal computer by using the programs in MATLAB language The first ten shear mode frequencies and the first three damping ratios of all three towers, the first seven shear vibration modes of Central and Shanxi towers, the first five shear vibration modes of Tianjin tower, and the first two torsional mode frequencies and damping ratios of all three towers are gotten by using the method of identification The methods and programs used in the paper are successful and reliable The results with important meaning for aseismic design and disaster reduction of television tower have fine precision and can meet the engineering needs
引文
[1] 中华人民共和国行业标准, 广播电影电视建筑抗震设防分类标准 (GY5060 - 1997) - 中国科学技术出版社, 1998-
[2] 那向谦等- 中央电视塔模型抗震性能试验研究报告- 清华大学研究报告, 1990-
[3] 王宗纲, 孙志鹏- 国内几座广播电视塔动力特性实测研究- 结构抗震实验方法现状与发展研讨会论文集, 1997-
[4] AliAmini, 中国RLJ 力平衡加速度计的实验分析- 地震工程与工程振动, 11 卷1 期, 1991-
[5] 王家行- RLJ 差容式力平衡加速度计, 地震工程与工程振动, 8 卷2 期, 1998-
[6] 王家行- 胡振荣- SLJ 型宽频带大动态力平衡三分向加速度计的设计与研制, 地震地磁观测与研究, Vol- 18 , No- 5 , 1997-
[7] 张培强主编, MATLAB 语言, 中国科学技术大学出版社, 1995
[2] 那向谦等- 中央电视塔模型抗震性能试验研究报告- 清华大学研究报告, 1990-
[3] 王宗纲, 孙志鹏- 国内几座广播电视塔动力特性实测研究- 结构抗震实验方法现状与发展研讨会论文集, 1997-
[4] AliAmini, 中国RLJ 力平衡加速度计的实验分析- 地震工程与工程振动, 11 卷1 期, 1991-
[5] 王家行- RLJ 差容式力平衡加速度计, 地震工程与工程振动, 8 卷2 期, 1998-
[6] 王家行- 胡振荣- SLJ 型宽频带大动态力平衡三分向加速度计的设计与研制, 地震地磁观测与研究, Vol- 18 , No- 5 , 1997-
[7] 张培强主编, MATLAB 语言, 中国科学技术大学出版社, 1995
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心