基于最小二乘法的混凝土相关性曲线的研究

Study on concrete correlation curve based on least square method

对某地区航道护岸经常使用的预制干硬性混凝土砌块实体取样,采用切割成标准立方体试件的方法来检测其强度,并作为数据系列的依据.对室内混凝土进行相同的配合比,采用干硬性混凝土圆柱体抗压试验方法测定其抗压强度,运用最小二乘法结合MATLAB程序建立切割立方体试件抗压强度与室内干硬性混凝土圆柱体抗压强度相关性曲线,探寻两种混凝土检验方法的内在联系,得到两种检验方法的相关性曲线,将有利于检测人员对护岸的使用性能作出评价,为内河航道护岸的防护和治理提供理论支持.

Prefabricated dry concrete block samples were taken from a waterway revetment and tested by cutting cube method for its unconfined compressive strength.By using the same concrete mix,cylindric dry concrete blocks were tested in laboratory for its compressive strength.Then,using the least squares method with MATLAB program,the correlation curve was built for the compressive strength of cutting cube specimens with that of the cylindric dry concrete blocks to explore the intrinsic link between the two concrete test methods.The correlation curve of the two testing methods will be used for the detection and evaluation of bank performance,and will,provide a theory support for the protection and management of inland waterway revetment.