预应力高强混凝土管桩缺陷类型的动力试验分析  

Application of dynamic testing in analyzing the defects of prestress high strength concrete pile

作　　者：蔡来炳[1] 周红波[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]上海建科建设监理咨询有限公司,上海200032

出　　处：《四川建筑科学研究》2006年第2期69-72,共4页Sichuan Building Science

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。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.

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 

分 类 号：TU473.1[建筑科学—结构工程]