Abstract.One of the main objectives of COST Action TU 1406 is to build a performance indicator database, in order to develop technical recommendations which will specify the performance goals, aiming to provide a methodology with detailed step-by-step explanations for establishment of QC plans for different bridge types. This paper presents the main findings of Working Group 1: Performance Indicators (PI), based on analysis of documents related to bridge maintenance, assessment and management from different European countries through surveying, clustering, homogenization and categorization. In addition, further steps in order to correlate with the objectives of the Working Group 2, whose work is dedicated to revealing Performance Goals (PG), and the Working Group 3, dedicated to the establishment of Quality Control (QC) plans, if is foreseen.
Resumen Está firmemente demostrada la importancia de realizar mantenimiento preventivo en los edificios, para evitar que se degraden y aparezcan lesiones graves. También está demostrado que con el mantenimiento preventivo se ahorra dinero frente al mantenimiento correctivo. En el marco del mantenimiento cabe decir que, para realizar las inspecciones periódicas de los edificios, es de gran utilidad el poder cuantificar hasta qué punto las deficiencias existentes son graves o no, con objeto de facilitar la toma de decisiones y priorizar las intervenciones terapéuticas. De hecho, se han utilizado y utilizan numerosas escalas diferentes entre sí para valorar el grado de gravedad de los elementos constructivos. Pero no existe consenso común y estas escalas son diferentes entre sí según el estudio a que pertenezcan. Por ejemplo, en las diferentes normas ITE existentes en España se utilizan diferentes escalas y formas de valorar las deficiencias existentes y no hay consenso común en el método de valoración. El objetivo del presente artículo es proponer, en base a un largo y riguroso proceso metodológico, una escala que sirva para valorar el grado de gravedad de los daños en edificios, que pueda ser utilizada de manera generalizada. Abstract The importance of performing preventive maintenance on buildings is clearly demonstrated, in order to prevent them from deterioration and severe damages. It is also demonstrated that preventive maintenance saves money versus corrective maintenance. In the framework of maintenance, to make periodic inspections of the buildings is useful to quantify the extent to which deteriorations are severe or not, in order to facilitate decision making and prioritize interventions. To this purpose many scales have been used and are used to assess the severity of damage and deterioration of the building components. But it appears evident that there is not common consensus and these scales are different between them, according to the study they belong to. Everything referred shows the need to propose and validate a scale that serves to assess the degree of severity of construction elements in buildings, which is widely used. Therefore, the objective of this article is to propose, based on a long and rigorous methodological process, a scale that serves to assess the degree of severity of damage in buildings, which can be widely used.
This paper reviews the simplified procedure proposed by Ghosn and Sivakumar to model the maximum expected traffic load effect on highway bridges and illustrates the methodology using a set of Weigh-In-Motion (WIM) data collected on one site in the U.S. The paper compares different approaches for implementing the procedure and explores the effects of limitations in the sitespecific data on the projected maximum live load effect for different bridge service lives. A sensitivity analysis is carried out on the most representative variables involved in the WIM data collection and calculation of the maximum load effect. The procedure is implemented on a set of WIM data collected in Slovenia to study the maximum load effect on existing Slovenian highway bridges and how it compares with the values obtained from the Eurocode of actions.
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