基于GDS的非饱和土强度三轴试验研究

由于吸力的影响,非饱和土的力学性状与饱和土有着很大的差异。文章应用GDS三轴仪来研究某高心墙堆石坝填料非饱和土的强度特征。结果表明:此填料非饱和土的强度在低吸力范围内,与吸力基本呈线性增长关系。验证了非饱和土的双变量强度理论的适用性;并得到了非饱和土抗剪强度参数φb约为10.1°。     

Distributed Safety Management as a tool for creating a safety culture in university students and future professionals

The main hypothesis of this work is that it is possible to create a safety culture not only in industrial or commercial organizations, but also in educational institutions. The goal is communicating a culture of safety to their students, which will be spread by the new professionals. Consequently, the objective of this paper is showing the results of first steps of application – establishing the baseline – of the Gaining Distributed Safety – GDS – tools to the academic community of the Universidad Centroamericana "José Simeón Cañas" (UCA) of El Salvador. GDS tools establish those aspects to which attention should be posed in order to achieve excellence in safety. Also enables analysis to recognise the weaker aspects of safety, so corrective actions can be taken.Before applying any improvement action according GDS, the initial parameters to measure the culture of safety in UCA were established. Special versions of the AsSeVi Survey Tool were developed and checked out. The first one was adapted to academy and administration of UCA. The second, to students. Both communities showed similar characteristics according GDS, opening the door of improving the safety culture of students working only with academy. Finally, the JST Safety Survey and a traditional behavioural safety observation activity were used to establish reference indicators. Use a handrail in stairs and walking watching cell phone are two excellent potential possibilities to be used as indicators.     

GDS三轴仪的非饱和土试验操作方法

与传统三轴仪相比,GDS三轴仪有着显著的优势。对GDS三轴仪的组成部分、工作原理和试验过程中的具体操作进行了详细介绍,并应用GDS三轴仪研究了某高心墙堆石坝非饱和土填料的强度特征,得到了该土样的抗剪强度参数。