压实质量连续检测参数稳健性设计旨在选择可控因素的最优组合来降低压实质量连续检测过程对噪声因素的敏感性,有效提高量测精度.本文基于双响应曲面法,结合满意度函数,以CMV均值和方差为优化目标建立二阶多项式模型;采用Box-Behnken设计方法,在沪昆高速铁路芷江试验段进行以振动频率、碾压速度和振幅为可控因素的压实质量连续检测试验.结果表明,以上3个因素对压实质量连续检测参数稳定性的影响程度由大到小依次为振动频率、振幅、碾压速度.根据满意度函数模型得到振动压路机连续检测工艺参数最优组合:振动频率28.0 Hz,碾压速度4.0 km/h,振幅1.10 mm.现场试验验证了振动压路机连续检测工艺参数最优组合的适用性和准确性.%The robust design of continuous compaction measured value is aimed at choosing the optimal combina-tion of the controllable factors to reduce the sensitivity of the continuous compaction check to the noise factors, thus effectively improving the accuracy of measurement.Based on the dual response surface methodology and coupled with desirability function,the mean and variance of CMV were taken as optimization obj ectives to es-tablish two second-order polynomial models.Using the Box-Behnken design method,the continuous compac-tion check tests were carried out in the Zhijiang construction site of Shanghai-Kunming High-Speed Railway, with amplitude,excitation frequency and roller speed as the controllable factors.The results demonstrated that the effect degree of the 3 factors on the stability of continuous compaction measured value was in the order of excitation frequency,amplitude and roller speed.Based on the desirability function,the optimal combina-tion of vibratory compaction technology parameters was obtained:excitation frequency of 28.0 Hz,roller speed of 4.0 km/h and amplitude of 1.10 mm.The applicability and the accuracy of the optimal combination of vibratory compaction technology parameters were verified through the field test.
展开▼
