摘要
既有桥梁桩基测试限制因素多,常规低应变法无法有效检测桩基的完整性。提出了改进型低应变测法:通过合理设置传感器位置,调整合适的激振力冲击激振,有效避免承台对信号传输的干扰并提高信噪比,最后利用一定比例桩基钻芯取样方法进行校核,是一种实用的桥梁桩基完整性检测方法。
As there are many restriction factors for pile test of the existing bridges,the conventional method cannot effectively detect low strain pile integrity.Improved low strain measurement method has been proposed:setting up sensors at reasonable positions,adjusting properly the excitation force for impact excitation,which could effectively avoid interference by bearing platforms on signal transmission with improved signal-noise ratio,and being verified with a certain percentage of pile core drilling method,it is a practical bridge pile integrity testing method.
引文
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