混凝土构件的有界性对应力波传播的影响及修正

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发布时间：2020-01-06 00:00:00

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混凝土构件的有界性对应力波传播的影响及修正

Influence and Correcting of Boundedness for Concrete Members on Stress Wave Propagation

２０14年第5期

压电陶瓷传感器；混凝土；应力波；有界性；衰减系数函数

Piezoceramics; Concrete; Stress wave; Boundedness; Attenuation coefficient function

２０14年第5期

1000-4637（2014）05-55-04

福州大学博士后科研项目（600703）；辽宁省教育厅科研项目（L2012210）

孙威1,2，阎石2，姜绍飞1

1.福州大学土木工程学院，350108; 2.沈阳建筑大学土木工程学院，110168

孙威1,2，阎石2，姜绍飞1

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1000

摘要：将压电陶瓷片成对埋置在不同截面尺寸、不同长度的混凝土试件中，在输入信号幅值一定的情况下，通过改变信号主频考察输出信号幅值的变化情况，并拟合出各试验工况下的衰减系数函数。结果显示，试件有界性对应力波在混凝土介质中传播的衰减系数函数具有影响，这种影响随试件截面尺寸或传感器间距的增加而减弱。比较各试件工况下的试验结果，对应力波在无限大混凝土介质中传播的衰减系数函数的修正进行了研究。 Abstract： Pairs of piezoceramics were buried into concrete members with different section area and length. The alterations of the amplitudes of the output signals were investigated by changing frequencies of input signals. The attenuation coefficient functions of all member conditions were obtained by test data fitting. The results indicate that the member boundedness affects the attenuation coefficient function, and it will weaken with the increasing of member section sizes and transducers space. At last, the correcting method on stress wave propagating in infinite concrete medium was investigated by comparing the test results in all member conditions.

英文名 : Influence and Correcting of Boundedness for Concrete Members on Stress Wave Propagation

刊期 : ２０14年第5期

关键词 : 压电陶瓷传感器；混凝土；应力波；有界性；衰减系数函数

Key words : Piezoceramics; Concrete; Stress wave; Boundedness; Attenuation coefficient function

刊期 : ２０14年第5期

DOI :

文章编号 : 1000-4637（2014）05-55-04

基金项目 : 福州大学博士后科研项目（600703）；辽宁省教育厅科研项目（L2012210）

作者 : 孙威1,2，阎石2，姜绍飞1

单位 : 1.福州大学土木工程学院，350108; 2.沈阳建筑大学土木工程学院，110168

孙威1,2，阎石2，姜绍飞1

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引用本文

Abstract： Pairs of piezoceramics were buried into concrete members with different section area and length. The alterations of the amplitudes of the output signals were investigated by changing frequencies of input signals. The attenuation coefficient functions of all member conditions were obtained by test data fitting. The results indicate that the member boundedness affects the attenuation coefficient function, and it will weaken with the increasing of member section sizes and transducers space. At last, the correcting method on stress wave propagating in infinite concrete medium was investigated by comparing the test results in all member conditions.

关键词:

压电陶瓷传感器；混凝土；应力波；有界性；衰减系数函数

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混凝土构件的有界性对应力波传播的影响及修正

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