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Study on Lightning Disaster Risk of the Modern Large Bridge

Author: WuJian
Tutor: ChenWeiJian
School: University of Electronic Science and Technology
Course: Software Engineering
Keywords: lightning hazard Large bridges risk application of the software lightning protection design
CLC: U447
Type: Master's thesis
Year: 2012
Downloads: 60
Quote: 0
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Abstract


The lightning hazard is due to direct lightning or lightning electromagnetic pulse caused casualties, property damage, social and economic events that cause adverse consequences. Lightning disasters as one of the world’s worst ten natural disasters, global disasters annually due to lightning caused a large number of casualties and property losses.Large modern bridge construction in Guangdong Province made significant progress in the next two years will be very obvious economic and social benefits, modern large bridges are generally located in the open area of the isolated buildings vulnerable to being struck by lightning, lightning disasters staff economic risk of loss can not be ignored, to strengthen prevention of great economic and social benefits.This paper is concerned about the lightning disasters may cause large-scale, high degree of impact and destruction and information, economic losses of large modern bridge construction lightning hazard assessment. Application of IEC62305and GB/T21714, in Zhaoqing City, Guangdong Province, Xijiang Bridge the lightning disaster risk assessment, to bring together the elements of the large bridge location, weather conditions, function factors, the loss and the impact characteristics analysis thunderstorm climate characteristics, analysis of wind conditions, and other meteorological characteristics, differences in Xijiang Bridge personal risk of casualties and economic loss risk (equipment) in the amount of lightning protection system at all levels, risk by the lightning disaster risk calculation model. Assessment of the risk of damage caused by direct lightning flashes Xijiang Bridge sensitive devices and systems equipment and indirect lightning flashes from the safe, reliable and economic rationality starting, you need to provide what level of lightning protection measures. Mad.e according to GB50057-94Lightning in design standards the rational conformal prevention, response, and mitigation measures, so the the lightning disaster loss probability of achieving an acceptable level. Use GIS, autocad, and c#measurement and calculation to improve measurement accuracy and simplify the calculation process.Through the measurement and analysis of the geography of the West River Bridge, lightning, weather and other features of the paper, to calculate the total mine-awareness programs at all levels of risk compared to study the Xijiang River Bridge lightning disaster risk of lightning-depth study of modern large-scale bridge The work has a very good foundation for the role. GIS, autocad software applications will enable more rapid and accurate information collection and analysis, the annual number of dangerous events NX c#design calculation software. The risk assessment of a large modern bridge in Guangdong Province. Lightning Activity Regularity applicable lightning protection measures and mine production safety management recommendations, part of the results in the practical applicated to the Xijiang River Bridge Constructing, the project can reached the lightning requirements and any lightning disasters has happened.

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridge safety and accident
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