Integrated bridge management from 3D-model to network level

Lukas, K.; Borrmann, André

doi:10.1201/b12352-518

Cited by 3 publications

(1 citation statement)

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“…So, it is of little wonder that structure maintenance and management is facing severe challenges [17,19]. [20] explored idea of referencing condition rating data (inspection data) to 3D geometric representation of the structure. However, this research didn't suggest a solution for practical issues of digitizing inspection data, and visualization of inspection observations wasn't proposed.…”

Section: Engineeringmentioning

confidence: 99%

Semi-Automatic Approach for Forming and Processing Laser Sensing Data of Urban Truss

Sedek

Serwa

2021

SVU-International Journal of Engineering Sciences and Applicati

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There is imprecision in the stage of construction because of manual quality control in the construction procedures. Forming and processing point clouds image of as is truss part with its CAD data are researched to identify and repair the geometric discrepancies and imprecision. Approved suggested technique of processing building model was done.Instead of manual processing of the 3D models points. BPNN architecture give the best coordinates processing training. It is applied to optimize the points forming process between the input laser scanned coordinates of the as-built model with the output true CAD coordinates. RMSE in x, y, xy, z and space vector R of all processing tasks are computed acceptably.

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Section: Engineeringmentioning

confidence: 99%

Semi-Automatic Approach for Forming and Processing Laser Sensing Data of Urban Truss

Sedek

Serwa

2021

SVU-International Journal of Engineering Sciences and Applicati

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An application of the local flexibility method to hyper-static beams using non-local virtual forces

Hsu¹,

Shiao²,

Loh³

2013

Research and Applications in Structural Engineering, Mechanics and Computation

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In current bridge maintenance practice, condition grades are assigned to individual bridges, based on regularly performed inspections. One of the main limitations to this approach is the subjective nature of grade assignment. To overcome this drawback, major bridge authorities are developing new methods for condition assessment based on collecting and evaluating sensor data. A major challenge in this context is to correctly model the impact of local deteriorations on the entire bridge's state. In this research, a system model-based approach has been developed to accurately model the correlations between the deterioration mechanisms and the measurement values indicating the progress of the deterioration. In addition, the system model describes the impact of the condition of individual bridge components on the condition of the overall bridge system. To this end, the bridge is hierarchically decomposed into modules, components and subcomponents, taking the structural system and mutual dependencies into account. The system model consists of three levels: The lowest level provides elements for modelling the input parameters provided by sensors or manual measurements. The mid-level models the deterioration mechanisms, taking the output of the parameter level into account. The topmost level models the structure of the bridge in a hierarchical manner, starting at the element parts up to the complete bridge system. The bridge´s condition is determined by state propagation mechanisms on the basis of logical elements connecting the aforementioned elements. In the end, the system model can be used to simulate the propagation of conditions assignments from the leaves (the sensors) to the top (the entire bridge). The developed system model approach is based on the application of the Systems Modelling Language (SysML). The paper will discuss in detail the advantages and limitations of the developed method and present a number of ostensive examples.

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