Connecticut permanent long-term bridge monitoring network, volume 3 : monitoring of a multi-steel girder composite bridge - I-91 SB over the Mattabesset River in Cromwell (bridge #3078).
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2014-08-01
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Abstract:This report describes the instrumentation and data acquisition for a multi-girder, composite steel bridge in Connecticut. The ; computer-based remote monitoring system was developed to collect information on the girder bending strains. The monitoring ; system was installed in 2004 to collect girder strains. The bridge is part of a network of bridges in a long-term research project to ; evaluate the performance of a variety of bridges in Connecticut. Data has been collected over a multi-year period using normal ; vehicular traffic. A series of papers has been generated to explore how the monitoring of this bridge can provide information of ; use to the Department of Transportation. The initial study involved the development of the data collection approach, used load ; tests and finite element analyses to describe the behavior, and used the data to make comparisons with the AASHTO ; Specification Requirements. The next study continued the development of the data from normal truck traffic to determine load ; and patterns and to propose guidelines for the long-term structural health monitoring of this bridge. The third study demonstrated ; that the monitoring system can also be used as a Bridge Weigh-In-Motion system. The monitoring system serves as a non-intrusive system to provide information on both the quantity and weights of trucks crossing the bridge. In the next study damage ; measures were developed for this bridge and compared to the inherent variability of actual bridge measurements to determine the ; minimum level of damage that can be detected by the system. The final study described in this report identifies and quantifies ; different data qualification measures needed for the structural health monitoring of this bridge.
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Main Document Checksum:urn:sha256:cd1b7cdedf4596f8072ba0c32a91c7c5e643936d0a2cd253a8301195c2a83e5f