Residual Capacity Aware Dynamic Control of GRE-based Routing Optical Path Networks under Traffic Growth Model

2015 ◽  
Author(s):  
Yuki Terada ◽  
Yojiro Mori ◽  
Hiroshi Hasegawa ◽  
Ken-ichi Sato
Keyword(s):  
Growth Model ◽  
Dynamic Control ◽  
Optical Path ◽  
Traffic Growth ◽  
Residual Capacity

Fatigue reliability evaluation of aging prestressed concrete bridge accounting for stochastic traffic loading and resistance degradation

2021 ◽  
pp. 136943322110179
Author(s):  
Yuan Luo ◽  
Hui Zheng ◽  
Haiping Zhang ◽  
Yang Liu
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Growth Model ◽  
Prestressed Concrete ◽  
Numerical Results ◽  
Fatigue Reliability ◽  
Traffic Loading ◽  
Fatigue Stress ◽  
Corrosion Effect ◽  
Traffic Growth

Fatigue damage accumulation is a critical factor resulting in the failure of prestressed concrete (PC) bridges. The fatigue damage is usually caused by the coupled effect of cyclic vehicle loading and environmental corrosion. This study investigated probabilistic fatigue damage on aging PC bridges considering both stochastic traffic loading and corrosion. A stochastic traffic model was derived based on long-term monitoring data aiming to simulate fatigue stress spectra of critical rebar. The effect of cracks on the fatigue stress spectra was investigated in order to model the fatigue stress state more realistically. A three-stage traffic growth model was established based on traffic volume histories of three highways in China. A fatigue limit state function considering traffic growth and corrosion effect was deduced for fatigue reliability assessment of PC bridges. Numerical results show that the stress amplitude of rebar considering cracks is 1.53 times greater than the rebar with no-cracks, resulting in a decrease of fatigue life by 68 years. In addition, the three-stage traffic growth models lead to 25 years shorter fatigue life than the one considering a linear traffic growth model. Finally, the corrosion effect results in a fatigue life of 44 years. The numerical results provide a theoretical basis for fatigue life estimation and maintenance of aging PC bridges.

Anti-crisis measures or structural reforms: Russia’s economic policy in 2015

2016 ◽  
pp. 5-33 ◽  
Author(s):  
V. Mau
Keyword(s):  
Economic Growth ◽  
Economic Policy ◽  
Structural Transformation ◽  
Growth Model ◽  
Emerging Economies ◽  
Social Issues ◽  
Import Substitution ◽  
Structural Reforms ◽  
Energy Prices ◽  
New Models

The paper deals with 2015 trends and challenges for social and economic policy in the nearest future. The analysis of global crisis includes: uneven developments in the leading advanced and emerging economies; new models of economic growth which look differently in different countries; prospects of globalization and challenges of ‘regional globalization’; currency configurations of the future; energy prices dynamics and its influence on political and economic prospects of particular states. Current challenges are discussed in the context of previous 30 years. Among the main topics on Russia, there are approaches to a new growth model, structural transformation (including import substitution issues), economic dynamics, budget and monetary outlines, social issues. The priorities of economic policy are also considered.

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