STATNAMIC LOAD TESTING AND THE INFLUENCE OF STRESS WAVE PHENOMENA
STATNAMIC LOAD TESTING AND THE INFLUENCE OF STRESS WAVE PHENOMENA
复制标题
静态负载测试和应力波现象的影响
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
P. Middendorp
中科院分区：
文献类型：
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作者：
P. Middendorp
卸荷点法（UPM）已成为分析静态载荷测试信号的标准工具。该方法是基于桩可以被建模为一个集中的质量和弹簧的假设。只有当应力波现象最小时，建模才有效。桩对应力波现象的敏感性可以通过波数来表征，波数由桩荷载的持续时间、应力波速度和桩长决定。用应力波程序TNOWAVE模拟了不同波数下的应力波。从结果得出结论，什么波数UPM可以可靠地应用。本文还将讨论应力波现象的一些修正措施。
The Unloading Point Method (UPM) has become a standard tool for the analysis of Statnamic (STN) load testing signals. The method is based on the assumption that the pile can be modelled as a concentrated mass and springs. Modelling is only valid when stress waves phenomena are of minimal. The sensitivity of STN to stress wave phenomena can be characterised by the wave number which is determined by the duration of the STN load, the stress wave velocity and the pile length. With the stress wave program TNOWAVE simulations have been made for different wave numbers. Conclusions are drawn from the results up to what wave number UPM can be applied reliably. Some measures to correct for stress wave phenomena will be discussed.