Portable Scour Monitoring Equipment (2004) / Chapter Skim
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Pages 41-47
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From page 41... ...
Application of this device should improve the ability of inspectors to make portable scour measurements during flood conditions, when such measurements can be difficult because of flow conditions. INTERPRETATION AND APPRAISAL The primary product of the research was the articulated arm truck, which also included a modified Minnesota-style winch system and data collection software.
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From page 42... ...
The objective was to develop a mechanical arm that could be used for deploying various scour monitoring sensors. Given the availability of knuckle booms or folding cranes in the construction industry, the research was designed around modifying and instrumenting this type of articulated crane for use in scour monitoring research.
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From page 43... ...
Once on the water, the kneeboard provided good data at overhanging bridge geometries, but this measurement was considerably more problematic than a direct measurement with the streamlined probe. High Bridges High bridges, where the water surface is well below the bridge deck, can create difficult measuring situations.
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From page 44... ...
Easily Transportable The articulated arm truck was designed around the smallest truck chassis possible, so as to control cost, provide maneuverability, and minimize the traffic control requirements. The latter issues are important when operating in a flood response mode, because the inspection crew needs to collect data as efficiently as possible and get to as many bridges as it can in a short time.
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From page 45... ...
The data collection process has been automated, and the scour data are presented in the bridge coordinate system, thereby allowing rapid evaluation of scour criticality. Overall, the ability to make portable scour measurements during flood flow conditions has been substantially improved.
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From page 46... ...
In either case, the application of portable scour monitoring devices during and after a flood, such as the articulated arm truck developed under this research, could be a key element of a scour monitoring program developed as part of the plan of action for a scour-critical bridge. The articulated arm truck provides a stable platform for deploying various scour instruments.
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From page 47... ...
With the number of sensors, the data loggers, and the computer data collection methods, the truck is a more complicated device than most conventional scour monitoring methods. Proper use of the articulated arm truck will require some training and a certain aptitude to operate and maintain.
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