| 预应力高强混凝土管桩缺陷类型的动力试验分析 |
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| 引用本文： | 蔡来炳,周红波.预应力高强混凝土管桩缺陷类型的动力试验分析[J].四川建筑科学研究,2006,32(2):69-72. |
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| 作者姓名： | 蔡来炳 周红波 |
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| 作者单位： | 1. 同济大学地下建筑与工程系,上海,200092;上海建科建设监理咨询有限公司,上海,200032
2. 上海建科建设监理咨询有限公司,上海,200032 |
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| 摘 要： | 从一维波动方程的有限差分解,导出了变截面的应力波传播公式和桩身完整性的表达式;结合工程实例,采用高应变动力试验分析了预应力高强混凝土管桩（以下简称PHC桩）的桩身断裂、接桩缺陷和桩尖破碎等缺陷以及桩身多缺陷情况;讨论了高应变动力试验结果的可靠性.
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| 关 键 词： | 波动方程 预应力高强混凝土管桩 缺陷 高应变动力试验 |
| 文章编号： | 1008-1933（2006）02-0069-04 |
| 收稿时间： | 2005-03-14 |
| 修稿时间： | 2005年3月14日 |
Application of dynamic testing in analyzing the defects of prestress high strength concrete pile |
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| CAI Lai-bing,ZHOU Hong-bo.Application of dynamic testing in analyzing the defects of prestress high strength concrete pile[J].Building Science Research of Sichuan,2006,32(2):69-72. |
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| Authors: | CAI Lai-bing ZHOU Hong-bo |
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| Affiliation: | 1. Department of Geoteehnieal Engineering, Tongji University, Shanghai 200092, China; 2. Shanghai Jianke Project Management Limited Company,Shanghai 200032, China |
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| Abstract: | Based on the finite difference solution of wave equation, a formula for the stress waves and the pile integrality at varied section was stated. In a case,the high strain dynamic tests was employed to analyze the defects of PHC pile,such as the broken pile, the defect at pile meet or the broken tip. According to the results, the dynamic test was proved to be an acceptable and creditable method to test the defects of PHC pile. |
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| Keywords: | wave equation prestress high strength concrete pile defect high strain dynamic test |
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