Development method for evaluating condition rating systyem of the bridge components

Abstract EN

Most of the current methods of assessment the condition of the bridge during the inspection process depend on the subjectivity opinion of the inspectors.

No calculations are performed, but the condition of the component is a degree.

This degree provides by the inspectors during the inspection process to evaluate the condition of the bridge.

Some of known rating methods provide common words such as low– medium–high–very high to classify the defects.

In this paper an extensive literature search of condition rating systems in various countries is presented.

A developed calculated method is suggested to standardize the assessment of the condition rating of the bridge and minimize the dependent on the inspector's expert.

The proposed method depends on classifying the defects according to the martial deficiency and the structure severity.

The martial deficiency depends on the type of defects, importunacy of bridge components, and the quantity of the defects.

The structural severity is evaluated according to the design cods limits.

Proposed limits to correlate the condition rating for any components and its defects are suggested.

These limits may be modified according to the conditions of each country.

Using these limits, a chart was developed to facilitate the use of the propose rating system.

This chart can be used as a base of computer program which can be developed to calculate the condition rating of any components of the bridge from specific input data from the inspector report.