scholarly journals Nonlinear Numerical Simulation of the Soil Seismic Response to the 2012 Mw 5.9 Emilia Earthquake Considering the Variability of the Water Table Position

2019 ◽  
Vol 109 (2) ◽  
pp. 505-524 ◽  
Author(s):  
Maria Paola Santisi d’Avila ◽  
Luca Lenti ◽  
Salvatore Martino ◽  
Roberto Walter Romeo
Keyword(s):  
Numerical Simulation ◽  
Seismic Response ◽  
Water Table ◽  
Emilia Earthquake ◽  
Nonlinear Numerical Simulation

scholarly journals Numerical Simulation Analysis of Combined Seismic Response for Rock-Lining-Water in Hydraulic Tunnel

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Guoqing Liu ◽  
Yanhong Zhang ◽  
Ming Xiao
Keyword(s):  
Numerical Simulation ◽  
Seismic Response ◽  
Simulation Analysis ◽  
Large Diameter ◽  
Water Diversion ◽  
Seismic Stability ◽  
Central Difference ◽  
Element Analysis ◽  
Internal Water ◽  
Lining Structure

In order to explore the influence of internal water on the seismic response of hydraulic tunnel, the combined mechanical analysis models of multimaterial including surrounding rock, lining structure, and internal water are built. Based on the explicit central difference method, the dynamic finite element analysis methods for rock, lining, and water are discussed, respectively. The dynamic contact force method is used to simulate the rock-lining contact interaction, and the arbitrary Lagrange-Euler (ALE) method is used to simulate the lining-water coupling interaction. Then a numerical simulation analysis method for combined seismic response of rock-lining-water system in hydraulic tunnel is proposed, and the detailed solving steps are given. This method is used to study the seismic stability characteristics of the water diversion tunnel in a hydropower station, and the displacement, stress, and damage failure characteristics of the lining structure under the conditions of no water, static water, and dynamic water are comparatively analyzed. The results show that the hydrostatic pressure restricts the seismic response of the lining, while the hydrodynamic pressure exacerbates its seismic response and leads to damage, separation, and slip failure appearing on the haunch, which can provide a scientific reference for the seismic design of hydraulic tunnel with high water head and large diameter.

Analysis of the Influential Factors of Waterlogging Caused by a Reservoir Impoundment and Evaluation of the Related Solutions

2013 ◽  
Vol 726-731 ◽  
pp. 3222-3228
Author(s):  
Shuo Zhang ◽  
Gang Chen ◽  
Cheng Hu ◽  
Long Zhang
Keyword(s):  
Numerical Simulation ◽  
Water Table ◽  
Influential Factors ◽  
Simulation Methods ◽  
Capillary Water ◽  
Reservoir Impoundment ◽  
Drainage Channels ◽  
Numerical Simulation Methods

After the impoundment of large reservoirs, the cut-off wall, originally built into the bedrock to cope with the immersion effects, can block the river backwater zone and minimize the risk of the consequential submergence. However, it also hinders the groundwater at the reservoir bank from flowing into the river, resulting in some sort of waterlogging disasters and causing some impact on the crops and buildings alongshore. This paper mainly focuses on the following three factors, i.e. the water table of the backwater zone, the rising height of capillary water and the characteristics of infiltration and evaporation. All of them are the most straightforward factors of the waterlogging of a reservoir. To tackle the issue, the paper has proposed a solution that combines the relief wells and drainage channels on the basis of the numerical simulation methods.

Numerical simulation for large-scale seismic response analysis of immersed tunnel

2006 ◽  
Vol 28 (10) ◽  
pp. 1367-1377 ◽  
Author(s):  
Jun-Hong Ding ◽  
Xian-Long Jin ◽  
Yi-Zhi Guo ◽  
Gen-Guo Li
Keyword(s):  
Numerical Simulation ◽  
Seismic Response ◽  
Large Scale ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Immersed Tunnel
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