Wide span rail traffic bridge damnification detecting system

A technology for rail transit and damage detection, applied in measurement devices, special data processing applications, instruments, etc., can solve the problems of limited number of measurement points, incomplete modal data, insufficient application, etc., and achieve easy implementation and good data transmission. Features, the effect of reducing the occupancy rate

Inactive Publication Date: 2008-10-08
SHANGHAI JIAO TONG UNIV
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  • Claims
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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 b

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  • Wide span rail traffic bridge damnification detecting system
  • Wide span rail traffic bridge damnification detecting system
  • Wide span rail traffic bridge damnification detecting system

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[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation modes and specific operating procedures are given, but the scope of protection of the present invention is not limited to the following Mentioned examples.

[0039] This embodiment is mainly aimed at a damage detection and identification system established for long-span bridges with rail transit, such as railways, railways, and highways.

[0040] Such as figure 1 As shown, this embodiment includes two parts: a data acquisition subsystem and a data processing subsystem, where the data acquisition subsystem is built as figure 2 As shown, n acceleration sensors are uniformly distributed along the longitudinal center axis of the bridge, and the sensors are used to measure the acceleration of the vertical vibration of the bridge when ve...

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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...

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Application Information

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IPC IPC(8): G01N19/00G01M7/00G06F19/00
Inventor 杜新光金先龙陈向东李渊印邓荣兵
Owner SHANGHAI JIAO TONG UNIV
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