【摘要】 提出了基于小波消噪的符号动力学途径研究混凝土自生体积变形的复杂性。对变形序列进行小波消噪,运用Lempel-Ziv算法计算其复杂度,以实际工程为例定量分析碾压混凝土自生体积变形复杂性。为研究混凝土系统的复杂性提供了工具。研究表明:高掺量粉煤灰的碾压混凝土的自生体积变形复杂度明显大于外掺氧化镁的碾压混凝土;早期28d的变形复杂度大于180d;温度越高,其变形复杂度也越大;掺有引气剂的试件变形复杂度也更大。最后就其机理进行了分析。更多还原

【Abstract】 The study approach of RCC autogenous volume deformation complexity based on the de-noising of wavelet transform from symbolic dynamics viewpoint is presented in the paper.First,the deformation sequences are dis-noised by the wavelet transform and the noise is filtered.Then the complexity of deformation is calculated with the Lempel-Ziv algorithm.Finally the complexity of RCC volume deformation is quantitatively analyzed in the practical engineering,and a new tool is provided to study the complexity of concrete system.The results are as following: the deformation complexity of high volume fly-ash slag RCC is markedly larger than that of RCC mixed MgO;the deformation complexity of early age RCC is higher than that of 180d;The complexity is greater with the higher temperature;The deformation complexity of RCC mixed with air-entraining agent is greater too.Finally the mechanism is analyzed.更多还原