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Full-Text Articles in Engineering
Factors Determining The Change Of Helium Concentration In Underground Waters Of Uzbekistan And The According Territories, M.M. Zakirov, I.A. Agzamova, N. Mavlyanova
Factors Determining The Change Of Helium Concentration In Underground Waters Of Uzbekistan And The According Territories, M.M. Zakirov, I.A. Agzamova, N. Mavlyanova
Technical science and innovation
The article presents the results of the analysis of long-term regime observations of change in the concentrations of groundwater of Uzbekistan and adjacent territories. Based on these observations, the main factors affecting the changes of the quantitative content of helium. The results of the evaluation of the characteristics of the changes and distribution of helium in groundwater. The change of helium concentration in groundwater significantly influence the deformation and hydro-geodynamic and tectonic conditions. Described and quantified four factors with different concentrations of helium. They allow to correctly assess the variation of helium associated with seismic events.
Seismic Performance Of Substandard Reinforced Concrete Bridge Columns Under Subduction-Zone Ground Motions, Alvaro Francisco Lopez Ibaceta
Seismic Performance Of Substandard Reinforced Concrete Bridge Columns Under Subduction-Zone Ground Motions, Alvaro Francisco Lopez Ibaceta
Dissertations and Theses
A large magnitude, long duration subduction earthquake is impending in the Pacific Northwest, which lies near the Cascadia Subduction Zone (CSZ). Great subduction zone earthquakes are the largest earthquakes in the world and are the sole source zones that can produce earthquakes greater than M8.5. Additionally, the increased duration of a CSZ earthquake may result in more structural damage than expected. Given such seismic hazard, the assessment of reinforced concrete substructures has become crucial in order to prioritize the bridges that may need to be retrofitted and to maintain the highway network operable after a major seismic event. Recent long …
Taylor's Slope Stability Chart For Combined Effects Of Horizontal And Vertical Seismic Coefficients, Pragyan Sahoo, Sanjay Kumar Shukla
Taylor's Slope Stability Chart For Combined Effects Of Horizontal And Vertical Seismic Coefficients, Pragyan Sahoo, Sanjay Kumar Shukla
Research outputs 2014 to 2021
Design standards and codes of practice on earth slope stability often recommend the pseudo-static method of analysis for determining the factor of safety of a slope subjected to seismic forces. In most pseudo-static methods of analysis, the horizontal seismic force is considered without due weightage to vertical seismic force. In the past, Taylor's stability chart for a homogeneous cohesive-frictional soil slope has been extended to consider the effect of horizontal seismic force only. In this paper, an attempt is made to develop an analytical formulation considering both horizontal and vertical seismic forces in order to estimate the factor of safety …