Many simply supported bridges have been constructed all over the world. The majority of them have been affected by some durability problems during their service life. For this purpose, the concept of integral abutment bridge came out which can achieve the requirement of road administrations to resolve the durability problems of broken expansion joints and damaged bearings fundamentally. In this paper, a retrofitting technology using the concept of integral abutment bridge and developed for the Italian National Road Authority (ANAS) is presented. A typical simply supported bridge "Viadotto Serrone" in Italy was chosen as case study. The corresponding finite element model was built by Sap2000 considering some critical issues, such as soil-structure interaction, plastic hinge assignment, foundation modeling and retrofitting process simulation. In order to find out the most critical influential factors and useful regulations which can be adopted as the guideline of this retrofitting technology, the influence of the new Italian codes on the mechanical properties of different types of bridge, including the simply supported bridge without rehabilitation and integral abutment bridges after retrofitting, were investigated using finite element model. © 2014 Taylor & Francis Group.
Italian national road authority IABs strategy / Xue, J. Q.; Briseghella, B.; Chen, B. C.; Zordan, T.; Mazzarolo, E.. - (2014), pp. 1854-1862. (Intervento presentato al convegno 7th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2014 tenutosi a Shanghai, chn nel 2014) [10.1201/b17063-287].
Italian national road authority IABs strategy
Briseghella B.;
2014
Abstract
Many simply supported bridges have been constructed all over the world. The majority of them have been affected by some durability problems during their service life. For this purpose, the concept of integral abutment bridge came out which can achieve the requirement of road administrations to resolve the durability problems of broken expansion joints and damaged bearings fundamentally. In this paper, a retrofitting technology using the concept of integral abutment bridge and developed for the Italian National Road Authority (ANAS) is presented. A typical simply supported bridge "Viadotto Serrone" in Italy was chosen as case study. The corresponding finite element model was built by Sap2000 considering some critical issues, such as soil-structure interaction, plastic hinge assignment, foundation modeling and retrofitting process simulation. In order to find out the most critical influential factors and useful regulations which can be adopted as the guideline of this retrofitting technology, the influence of the new Italian codes on the mechanical properties of different types of bridge, including the simply supported bridge without rehabilitation and integral abutment bridges after retrofitting, were investigated using finite element model. © 2014 Taylor & Francis Group.
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