浅析期间核查在土工试验设备中的应用

Application of Periodical Calibrations in Geotechnical Testing Equipment

随着我国工程建设技术的高速发展,不仅要求土工试验室能提供较多的数据,还要求试验室数据有很高的可信度。因此,对于参考标准和使用频率高、易损坏、性能不稳定的仪器进行期间核查至关重要。三轴仪和直剪仪在土工试验中属于使用频率高的设备,常使用的期间核查的方法是与相同准确等级的另一个设备或几个设备的量值进行比较,试验过程中标准试样的质量及代表性决定了土工试验数据的客观准确性,标准试样的制备是土工试验中不容忽视的重要环节,因此提出采用击实方法,制备标准试样,同时选用统计学方法处理比对试验数据,提高试验和数据处理的准确性和可靠性。

With the rapid development of the engineering construction technology in China,the geotechnical laboratory is required not only to provide more data,but also to have high accuracy of laboratory testing data.Therefore,it is very important to conduct periodical calibrations on the testing procedures,frequently used.easily damaged and constantly unstable equipment.The triaxial testing and the direct shear test devices in the geotechnical tests belong to this type of equipment.The method of periodical calibration of the frequently used equipment is to compare the value of another equipment or several equipment with the same accuracy level.The quality and the representativeness of the standard samples determine the objective accuracy of the geotechnical test data.Therefore,the preparation of the standard samples is an important link that cannot be ignored in the geotechnical test.This paper proposes to use the compaction method to prepare standard samples and select statistical methods to process the comparative test data,to improve the accuracy and reliability of the testing data.