无侧限抗压强度与轻量土配比参数的非线性回归分析研究

就轻量土的水泥含量、水含量对无侧限抗压强度的关系进行了参数回归分析.以二次非线性回归分析方法对回归方案进行优化计算,选择优化方案.进行了回归假设前提相符性验证和内部交叉验证,观察方案的正确性和预测误差的大小,分析了拟合方程的可靠性.利用该拟合方程,初步分析出轻量土无侧限抗压强度参数关系.利用方程揭示的变量关系,可以从理化参数设计方面来指导商品轻量土的设计和生产,达到提高无侧限抗压强度的目的.

Non-linear Regression Analysis on Mixture Proportion Parameters of Lightweight Soil and Unconfined Compression Strength

The relationship between unconfined compressive strength and the cement content,as well as the water content of lightweight soil is analyzed by parameter regression analysis.The regression scheme is optimized based on 2nd order non-linear regression analysis.The assumption uniformity and the interior cross are verified,the predictive error and the accuracy of the program observed are analyzed,so is the reliability of the regression model.The parameter relation of the unconfined compressive strength of lightweight soil is tentatively illustrated by following the model estimation.By using the variable relation of the model,the design and the production of the commodity lightweight soil can be guided from the parameter design to improve the unconfined compressive strength of lightweight soil.