摘要
理论上讲,以桩基超声波测试评价桩身混凝土质量时,如果桩身所有截面的声学参数都能够通过测试获取,其评价结果也将可靠,但在实际测试中,尚有大量未知区域不能测得.本文针对这种情况,提出了以回归分析、灰色理论和三次样条函数预测未知区域混凝土质量的3种方法,结果表明,三次样条法适用前景较好.
Acoustic parameters of all section in the pile testing can be gained theoretically, so the result is reliable. In fact, a mass of undiscovered district cannot be tested. In the paper, considering the fact, regression analysis, grey theory and cubic spline function are applied for the methods of forecasting concrete quality of the undiscovered distriers of the testing pile. The results show that the cubic spline function forecasting is the best among them with prospective application.
出处
《贵州科学》
2007年第B05期240-245,共6页
Guizhou Science
关键词
桩基
超声波
回归分析
灰色理论
三次样条
pile foundation
ultrasonic
regression analysis
grey theory
cubic spline
