Wide span rail traffic bridge damnification detecting system

Abstract

The invention discloses a large span rail traffic damage examination system in the computer applied technology field, which comprises a data acquisition subsystem and a data processing subsystem. The data acquisition subsystem is responsible to examine the vibration condition during a rail traffic vehicle crossing a large span bridge, and gathers dynamic response signals to transfer the data processing subsystem; the data processing subsystem reads the dynamic response signals of a bridge examined by the data acquisition subsystem, combines the dynamics to analyze and calculate the obtained bridge simulation dynamic response signals so as to realize the damage examination of the bridge, achieve that the operation of the system and the data management of the user through a graphic interface and a database technology, and realize the communication between a local computer and a remote computer through the network technology; the invention is characterized in that the invention is modularization and hierarchy, various functional modules can communicate with each other, the precision of the damage examination of the bridge is increased, the normal use of the bridge structure can not be affected.

Description

technical field [0001] The invention relates to a bridge detection system in the field of measurement technology, in particular to a long-span rail transit bridge damage detection system. Background technique [0002] With the advancement of science and technology and the growth of transportation demand, many rail transit bridges or long-span bridges for both highway and rail transit (such as: Wuhan Yangtze River Bridge, Nanjing Yangtze River Bridge, Shanghai "Minpu Second Bridge" under construction) Has been or will be built. During the service process, these bridges are constantly eroded by external environments such as temperature changes and strong winds, long-term repeated effects of vehicle loads and vehicle impacts, and natural disasters such as earthquakes and floods. As the service life increases, its structural materials continue to age and fatigue effects continue to increase, resulting in varying degrees of natural cumulative damage and sudden damage to bridge c...

AI Technical Summary

Problems solved by technology

However, since most of these systems require the input of the measurement system, and the number of measurement points in the test is limited, the modal data is incomplete; in addition, the time-varying damage and environmental uncertainty factors are ignored, which will cause big error

Therefore, most of the bridge damage detection systems put into use at home and abroad are limited to data collection and storage, and the application of scientific management of monitoring data, establishment of reasonable bridge evaluation indicators, and application of monitoring data for damage detection is obviously insufficient.

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