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冲击回波主频成像在箱梁孔道压浆检测中的应用

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摘要 介绍了冲击回波法检测的基本原理及其目前在土木工程中的应用情况,结合江苏省在建高速公路中,对后张法预制箱梁孔道压浆的质量检测需求,通过冲击回波法对箱梁预应力束孔管道的压浆质量进行无损检测的实例,利用冲击回波实测主频的成像,判断后张法预制箱梁孔道预应力束金属波纹管中是否存在孔隙。经过凿开验证表明,冲击回波法能准确地定性判断波纹管的位置以及预制箱梁孔道内压浆密实情况。
作者 黄燕 裴之钰
出处 《华东公路》 2011年第6期68-71,共4页 East China Highway
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