Seismic Reliability Analysis of Lifeline Systems
نویسندگان
چکیده
Lifelines are essential to urban life as they include all kinds of facilities and systems as water, gas, fuel, power, communication and transportation. The scope of this paper is to evaluate the influence of the uncertainties of seismic load and damage state definition in system’s reliability. At first, a rapid pre-estimation of the reliability of the system just after the earthquake is conducted. Then probabilistic seismic risk analysis by using mesh is done, and damage probability of pipelines derived. The final estimation of the seismic performance of the system is achieved by combining a probabilistic vulnerability curve and a Monte-Carlo simulation. As a case study the water network of Padang-Indonesia is selected. The methodology is general and it can be used for all lifelines in order to increase the reliability of the lifeline systems and to enhance the national or local mitigation plans.
منابع مشابه
Simulated Annealing Algorithm for Seismic Optimization of Lifeline Networks
Usually lifeline systems, such as water distribution network and gas supply network, cover large areas. For these systems, network topology design based on seismic reliability provides a good way to design new systems and update old ones. In this paper, a topology optimization model for lifeline networks is established. The aim of the model is to find the least-cost network topology while its s...
متن کاملEnd-to-end Simulation and Analysis Framework for Efficient Seismic Retrofitting of Water Systems
Maintaining the functionality, productivity, and safety of communities necessitates the seismic reliability of lifeline infrastructure networks. However, assessing the reliability of an infrastructure network is a nontrivial task due to the variability of ground motion and the complexity of the response of the network resulting from that ground motion. Even more challenging is the task of ident...
متن کاملProbabilistic Seismic Risk Assessment of Lifeline Networks Using Cross-entropy- Based Adaptive Importance Sampling
Because of its complexity, reliability analysis of lifeline-network usually employs a sampling-based approach. MonteCarlo simulation (MCS) provides a straightforward method to deal with interdependence between structural components and their cascading failures in the lifeline network system, but its computational cost might be expensive if the probability of the event of interest is too low. To...
متن کاملSeismic Reliability Assessment of Lifeline Networks Using Clustering-based Multi-scale Approach
Seismic reliability assessment of lifeline networks gives rise to various technical challenges, which are mostly caused by a large number of network components, complex network topology, and statistical dependence between component failures. For effective risk assessment and probabilistic inference based on post-hazard observations, various non-simulation-based algorithms have been developed, i...
متن کاملCoupling Analysis of Disaster Bearing Capacity of Urban Lifeline System Based on Brittleness Entropy
Urban or regional disaster bearing capacity mainly depends on the disaster bearing capacity of lifeline systems. In the analysis of disaster bearing capacity evaluation of lifeline system, we should not only investigate the complexity, balance and reliability of network characteristics, but also consider the relation between each subsystem. A new brittleness entropy of city disaster vulnerabili...
متن کامل