| 混凝土结构中钢筋对波传播的影响分析 |
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| 引用本文： | 罗松南,程红梅,童桦.混凝土结构中钢筋对波传播的影响分析[J].振动与冲击,2005,24(4):66-68. |
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| 作者姓名： | 罗松南 程红梅 童桦 |
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| 作者单位： | 1. 湖南大学工程力学系
2. 湖南大学土木工程学院,长沙,410082 |
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| 基金项目： | 湖南省自然科学基金资助项目(03JJY3008)
教育部科学技术研究重点资助项目(104137) |
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| 摘 要： | 对超声波在钢筋混凝土结构中的传播进行研究,分析了波在传播路径中的波形转换,通过实例计算求得时域曲线并进行了影响分析。可知钢筋的直径大小,钢筋到探头的距离都对波形、波幅有很大的影响,同时钢筋到探头的距离对首波到达的时间也有较大的影响,为无损检测的定量化提供了可靠的依据。
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| 关 键 词： | 超声波 钢筋 波形 波幅 首波到达的时间 |
| 收稿时间： | 10 9 2003 12:00AM |
| 修稿时间： | 03 18 2004 12:00AM |
ANALYSIS OF EFFECTS OF REINFORCING STEEL BAR ON WAVE PROPAGATION IN CONCRETE MEDIA |
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| Luo Songnan,Cheng Hongmei,TONG Hua.ANALYSIS OF EFFECTS OF REINFORCING STEEL BAR ON WAVE PROPAGATION IN CONCRETE MEDIA[J].Journal of Vibration and Shock,2005,24(4):66-68. |
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| Authors: | Luo Songnan Cheng Hongmei TONG Hua |
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| Abstract: | The theory of ultrasound propagation in reinforced concrete beam-panel is studied.The transformation of the wave shape in the propagation is analyzed.The time-domain curves are gained and analyzed in actual examples.The obvious effects of the diameter of reinforcing steel bar on the wave shape and its magnitude are investigated.The noticeable effects of thw distance between reinforcing steel bar and the probe on the wave form and,in addition,on the arrival time of the first wave front are also examined.The results are provided as the basis for quantitative analysis of nondestructive test. |
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| Keywords: | ultrsound reinforcing steel bar the wave shape amplitude of wave the time of the first wave propagation |
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