SAFETY ASSESSMENT USING LEVEL II PROBABILISTIC METHODS: APPLICATION TO THE SINES' WEST BREAKWATER

2005 ◽  
Author(s):  
ISAAC ALMEIDA DE SOUSA ◽  
MARIA TERESA REIS ◽  
JOÃO ALFREDO SANTOS
Keyword(s):  
Safety Assessment ◽  
Probabilistic Methods ◽  
Level Ii

Failure analysis of steel open dam against an extreme boulder debris flow

2020 ◽  
pp. 204141962097056
Author(s):  
Toshiyuki Horiguchi ◽  
Hiroshi Kokuryo ◽  
Nobutaka Ishikawa
Keyword(s):  
Debris Flow ◽  
Failure Analysis ◽  
Safety Assessment ◽  
Distinct Element ◽  
Rigid Wall ◽  
Reduction Factor ◽  
Second Step ◽  
Uniform Load ◽  
Load Model ◽  
Level Ii

This paper presents a failure analysis for a steel open-type Sabo dam (hereafter, steel open dam) against an extreme boulder debris flow load (hereafter, level II load) by a two-step analysis. The first step analysis is to estimate the level II load against the rigid wall by using the revised distinct element method (DEM). In the second step, the failure mechanism of a steel open dam is examined by using a dynamic elastic plastic analysis, in which the level II load-time relations obtained by the first analysis are multiplied by a reduction factor and then used. For the second step, the effects of the flange joint and dent deformation of the connection between column and beam are considered. Finally, a simple entire uniform load onto the steel open dam is proposed as a level II load model for the safety assessment.

Safety assessment method of steel protective structure against large-scale debris flow

2021 ◽  
pp. 204141962110595
Author(s):  
Hiroshi Kokuryo ◽  
Toshiyuki Horiguchi ◽  
Nobutaka Ishikawa
Keyword(s):  
Debris Flow ◽  
Safety Assessment ◽  
Large Scale ◽  
Assessment Method ◽  
Load Level ◽  
Energy Constant ◽  
Level Ii ◽  
Load Carrying ◽  
Torrential Rainfall ◽  
Protective Structures

Recently, steel pipe open type protective structures (steel open dams) have been damaged because of large-scale debris flow resulting from torrential rainfall based on abnormal climate. This article proposes a safety assessment method for the load-carrying capacity of a steel open dam against large-scale debris flow load (level II load) using the energy constant law. First, the safety assessment method of steel open dams is proposed that the ultimate strength must be larger than the required strength against the level II load, which is determined by using the energy constant law. Second, the load-carrying capacities of three types of steel open dams with different structural shapes against the front and eccentric debris flow loadings are investigated by a push-over analysis. Finally, the safety assessments on load-carrying capacities against the front and eccentric debris flow loading are confirmed and the strength reduction by the eccentric loading is examined for three steel open dams.

Safety Assessment of Existing Reinforced Concrete Beams Using Probabilistic Methods at Different Levels

2016 ◽  
Vol 711 ◽  
pp. 958-965 ◽  
Author(s):  
Anindya Roy ◽  
Samanta Robuschi ◽  
Max A.N. Hendriks ◽  
Beatrice Belletti
Keyword(s):  
Reinforced Concrete ◽  
Safety Assessment ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Probabilistic Methods ◽  
Analytical Models ◽  
Finite Element Models ◽  
Structural Behaviour ◽  
Reliability Methods ◽  
Different Levels

Several reliability methods available in literature combined with various modelling approaches are compared in this current work in the context of two experimental reinforced concrete (RC) beams. One beam failed in bending while the other beam failed in shear due to diagonal tension. The structural behaviour is described by analytical models and nonlinear finite element models. The changes in predicted reliability of these structures with increasing loads are evaluated by different reliability methods and the results are compared

scholarly journals Application of Monte Carlo Method in Hydraulic Structures Safety Assessment in Vietnam Conditions

2019 ◽  
Vol 8 (10) ◽  
pp. 3141-3146
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Safety Assessment ◽  
Design Method ◽  
Hydraulic Structures ◽  
Safety Factors ◽  
Random Design ◽  
Level Ii ◽  
The Monte Carlo Method ◽  
The World

Vietnam is a country with many dams but most of these works are designed according to the Determined design method and analysis of safety factors, while the Random design method and the reliability analysis have become popular in the world for many years. The paper introduces the method of calculating reliability for hydraulic structures according to the Monte Carlo method or the level III random design method. Based on the method of calculating the reliability of dams according to the Monte Carlo, the authors applied to calculate the reliability of the main dam of Phu Ninh - Quang Nam irrigation reservoirs. Compare with the reliability calculations at level II and have recommendations applied to all levels of construction in Vietnam conditions: with important dams will be calculated according to the problem of level III, with less

Abstract #379 The Eversense CGM System Accuracy and Safety Assessment on the Abdomen Compared to the Upper Arm in a Home Use Setting

2019 ◽  
Vol 25 ◽  
pp. 173
Author(s):  
Magnus Löndahl ◽  
Mona Landin-Olsson ◽  
Stig Attval ◽  
Colleen Mdingi ◽  
Katherine S Tweden
Keyword(s):  
Safety Assessment ◽  
Upper Arm
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