Bridge structural health monitoring car

Abstract

The invention provides a bridge structural health monitoring car. A mechanical hand capable of being bent to extend into the lower part of a bridge is arranged on the bridge structural health monitoring car, wherein at least one camera is arranged on the mechanical hand and used for collecting the image information of the bottom and the side face of the bridge; a high-precision GPS positioning device is arranged and used for determining a current detection position and measuring the line shape of the bridge surface; a bridge structure dynamic information collecting device is arranged and used for collecting the dynamic characteristic information data of the bridge structure; an information processing device is arranged and used for storing the image information collected by the cameras, the GPS data and the dynamic characteristic information data, judging the health conditions and the disease development conditions of the bridge structure according to the analysis and the comparison of the monitoring data of each time and definitely indicating the disease conditions and parts by visual images. The bridge structural health monitoring car can carry out health monitoring on a plurality of bridges at the same time.

Description

technical field [0001] The invention relates to the field of bridge health monitoring, in particular to a bridge structure health monitoring vehicle. Background technique [0002] As an important part of the bridge engineering technology field, bridge health monitoring technology plays an extremely important role in the safe passage of bridges. The occurrence and development of cracks on the bottom of the bridge is an important manifestation of bridge health problems. Therefore, the monitoring of cracks on the bottom of the bridge is the main component of bridge health monitoring. In this method, the inspectors are far away from the bottom surface of the bridge, the inspection speed is slow, and the reliability is poor. Advance on the bridge, let the monitoring personnel carry out close-range naked eye observation on the working platform, similar device belongs to the mature prior art, all has records in the Chinese utility model instructions that authorized announcement nu...

AI Technical Summary

Problems solved by technology

The occurrence and development of cracks on the bottom of the bridge is an important manifestation of bridge health problems. Therefore, the monitoring of cracks on the bottom of the bridge is the main component of bridge health monitoring. In this method, the inspectors are far away from the bottom surface of the bridge, the inspection speed is slow, and the reliability is poor. Advance on the bridge, let the monitoring personnel carry out close-range naked eye observation on the working platform, similar device belongs to the mature prior art, all have records in the Chinese utility model specification that authorized announcement number is CN201240314Y, CN2839366Y, CN2839365Y, adopts This method still uses naked eye observation, and the monitoring results are easily affected by the personal experience of the monitors, and the reliability is still not high enough. At the same time, in order to ensure the safety of the monitors, many safety designs will be added to the bracket and the working platform, which will increase the cost.

[0003] At present, another monitoring method is to arrange sensors or video monitoring systems on bridges, such as a structural health video monitoring system disclosed in Publication No. CN101339141A. A fixed video monitoring system is arranged on the measured object, such as the bottom of the bridge. This monitoring The system can effectively monitor the bottom of the bridge, but still has some disadvantages: for example, the monitoring range is limited and the monitoring accuracy is not high; the monitoring equipment is difficult to maintain, and the monitoring system needs to be maintained frequently to ensure normal operation, but the monitoring system fixed at the bottom of the bridge system, its maintenance is very difficult; as another example, a monitoring system needs to be installed under each bridge, and each monitoring system can only monitor a partial range of a bridge, and cannot take into account the long-term health monitoring of multiple bridges

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