scholarly journals Modelling and analysis of the stability of a harbour wharf’s embankment with regards to its failure

2021 ◽  
Vol 21 (4) ◽  
Author(s):  
Grzegorz Dmochowski ◽  
Piotr Berkowski ◽  
Jerzy Szołomicki ◽  
Barbara Gronostajska ◽  
Jarosław Krążelewski
Keyword(s):  
Stability Analysis ◽  
Computational Model ◽  
Computer Simulations ◽  
Environmental Conditions ◽  
3D Model ◽  
Historical Analysis ◽  
Data Preparation ◽  
The Stability ◽  
Material Tests ◽  
River Embankment

AbstractThe article presents the process of creating a computational model for the stability analysis of a harbour wharf’s embankment with regards to its failure. The described elements that were taken into account at the stage of data preparation are: historical analysis of the structure (structural calculations, and the calculations of the stability of the embankment), results of the author’s own soil and material tests (concrete, steel), environmental conditions (atmospheric and water), the possible load systems that acted on the facility, and also the results from the 3D model of the wharf’s structure. On this basis, five computational schemes were prepared for computer simulations of the stability of the embankment in a plain state of deformations. Various stages and conditions of its operation were taken into account. In conclusion, a possible course of the process of destruction of the structure of the harbour wharf, and the river embankment that cooperates with it, was proposed.

STABILITY ANALYSIS OF A PREY-PREDATOR MODEL WITH DELAY AND HARVESTING

2004 ◽  
Vol 12 (01) ◽  
pp. 61-71 ◽  
Author(s):  
TAPAN KUMAR KAR
Keyword(s):  
Stability Analysis ◽  
Computer Simulations ◽  
Significant Role ◽  
Combined Effects ◽  
Predator Model ◽  
The Stability ◽  
Predator System

An analysis is presented for a model of a two species prey-predator system subject to the combined effects of delay and harvesting. Our study shows that, both the delay and harvesting effort may play a significant role on the stability of the system. Computer simulations are carried out to explain some of the mathematical conclusions.

scholarly journals Stability analysis of an eco-epidemiological model incorporating a prey refuge

2010 ◽  
Vol 15 (4) ◽  
pp. 473-491 ◽  
Author(s):  
A. K. Pal ◽  
G. P. Samanta
Keyword(s):  
Stability Analysis ◽  
Time Delay ◽  
Computer Simulations ◽  
Discrete Time ◽  
Predator Population ◽  
Prey Refuge ◽  
Predator Prey ◽  
Predator Prey Model ◽  
Discrete Time Delay ◽  
The Stability

The present paper deals with the problem of a predator-prey model incorporating a prey refuge with disease in the prey-population. We assume the predator population will prefer only infected population for their diet as those are more vulnerable. Dynamical behaviours such as boundedness, permanence, local and global stabilities are addressed. We have also studied the effect of discrete time delay on the model. The length of delay preserving the stability is also estimated. Computer simulations are carried out to illustrate our analytical findings.

scholarly journals Computer Simulations for Stability Analysis of a Numerical Procedure for Crossbar Packet Switch

2017 ◽  
Vol 15 (3) ◽  
pp. 7-11
Author(s):  
T. Tashev ◽  
V. Monov ◽  
R. Tasheva
Keyword(s):  
Stability Analysis ◽  
Computer Simulations ◽  
Input Data ◽  
Traffic Simulation ◽  
Numerical Procedure ◽  
Uniform Load ◽  
Link Type ◽  
Computational Structure ◽  
Packet Switch ◽  
The Stability

Abstract The paper is concerned with the problem of calculating the bound of the throughput (THR) of a crossbar packet switch. For this purpose a suitable numerical procedure is used. The input data for the procedure are the results of computer simulations executed on a grid-computational structure (www.hpc.acad.bg). The modeling of the THR uses MiMa-algorithm for a crossbar packet switch, specified by the apparatus of Generalized Nets. For studying the stability of the numerical procedure we use a modified family of patterns for i.i.d. Bernoulli uniform load traffic simulation. The obtained results show that the numerical procedure is stable which means that small input perturbations result in small changes in the output.

scholarly journals Probabilistic analysis of flood embankment stability: the case study of the Adige River embankment in Italy

2020 ◽  
Vol 195 ◽  
pp. 01003
Author(s):  
Alessia Amabile ◽  
Fabio De Polo ◽  
Alessandro Tarantino
Keyword(s):  
Stability Analysis ◽  
Probabilistic Approach ◽  
Flood Hazards ◽  
Probabilistic Distribution ◽  
Worldwide Phenomenon ◽  
The Stability ◽  
River Embankment ◽  
Flood Defence ◽  
Embankment Stability

Flooding is a worldwide phenomenon. Over the last few decades the world has experienced a rising number of devastating flood events and the trend in such natural disasters is increasing. Furthermore, escalations in both the probability and magnitude of flood hazards are expected as a result of climate change. Flood defence embankments are one of the major flood defence measures and stability assessment for these structures is therefore a very important process. Traditional deterministic approaches to stability analysis do not allow taking into account and quantifying the uncertainties in soil characterisation. For this reason they may not be sufficient to capture the failure of flood embankments. The paper presents a probabilistic approach for the stability analysis of flood embankments taking into account the probabilistic distribution of soil hydro-mechanical properties. The approach is validated against the failure case study of the Adige river embankment in Italy, by comparing the probability of failure of two sections, within and outside the failure segment respectively.

Stability Analysis of the Nanjung Water Diversion Twin Tunnels based on Convergence Measurement

2019 ◽  
Vol 1 (1) ◽  
pp. 49-60
Author(s):  
Simon Heru Prassetyo ◽  
Ganda Marihot Simangunsong ◽  
Ridho Kresna Wattimena ◽  
Made Astawa Rai ◽  
Irwandy Arif ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Convergence Rate ◽  
Critical Strain ◽  
Convergence Rates ◽  
Strain Analysis ◽  
Water Diversion ◽  
Tunnel Face ◽  
Tunnel Stability ◽  
The Stability ◽  
Twin Tunnels

This paper focuses on the stability analysis of the Nanjung Water Diversion Twin Tunnels using convergence measurement. The Nanjung Tunnel is horseshoe-shaped in cross-section, 10.2 m x 9.2 m in dimension, and 230 m in length. The location of the tunnel is in Curug Jompong, Margaasih Subdistrict, Bandung. Convergence monitoring was done for 144 days between February 18 and July 11, 2019. The results of the convergence measurement were recorded and plotted into the curves of convergence vs. day and convergence vs. distance from tunnel face. From these plots, the continuity of the convergence and the convergence rate in the tunnel roof and wall were then analyzed. The convergence rates from each tunnel were also compared to empirical values to determine the level of tunnel stability. In general, the trend of convergence rate shows that the Nanjung Tunnel is stable without any indication of instability. Although there was a spike in the convergence rate at several STA in the measured span, that spike was not replicated by the convergence rate in the other measured spans and it was not continuous. The stability of the Nanjung Tunnel is also confirmed from the critical strain analysis, in which most of the STA measured have strain magnitudes located below the critical strain line and are less than 1%.

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