Study On The Loss Of Transportation Network Under The Earthquake

Earthquake disaster, which exists in many parts around the world, is one of the natural ones that cause tremendous loss to our society and the economy. With the rapid development of China's national economy, transportation network system, which has become a necessary component in people's daily life, is an important part of the lifeline systems. It also plays a crucial role in the post-earthquake search and rescue as well as in reconstruction efforts. Earthquake damage to a transportation system not only cause direct loss to the system, but also incurs serious indirect damage due to its networking property. Therefore, the analysis of the transportation network stability and economic loss under the earthquakes is very important and bears practical application potential.Based on previous studies, this paper proposes a framework for analyzing network stability and economic loss for domestic transportation system . The main contents of this paper are as follows: First, the paper studies various methods for the structure vulnerability of transportation network and then proposes structural vulnerability curves, suitable for the rapid assessment after an earthquake. Second, the method for traffic distribution is analyzed. Third, the entire transportation network stability is studied. Fourth, according to the damage characteristics, the assessment method of the direct loss and the indirect loss of the transportation network are proposed. Finally, the transportation network of the Beijing-Tianjian-Tangshan area is analyzed as an example to apply the proposed framework.