Diagnostic and Analysis of Selected Masonry Railway Bridges on Slovak Railways

The paper presents an overview of the current state of railway masonry arch bridges that are in operation on Slovak Railways. The material of the vault is either stone or brick. It also presents the current possibilities of diagnostics, monitoring and evaluation of failures, the method of measuring selected material characteristics of masonry elements (especially the determination of compressive strength). Within the cooperation of our department and the Research and Development Institute of ŽSR, applications of diagnostic measurements and evaluation of the current state of these bridges are presented on selected bridge structures

Some Experience from the Analysis of Existing 40 Years Old Prestressed Bridges in the North of Slovakia

The paper deals with the analysis of the chosen short-span bridges from precast prestressed concrete girders. The analysis has been performed at the Department of Structures and Bridges recently. Part of the current technical condition assessment of these structures comprised the load carrying capacity and remaining life time determined by calculation [1, 2 and 3]. The load carrying capacity was calculated in compliance with the previous Slovak standards and new European standards

Real Behaviour and Remaining Lifetime of Bridge Structures

The paper presents results of research activities of the Department of Structures and Bridges in the field of investigation of the real behaviour, reliability and durability of existing bridge structures. There are introduced two cases of these research activities in the paper having significant effects on the determining bridge remaining lifetime, which is the basic information from the viewpoint of bridge rehabilitation. The third presented research activity is devoted to the possibility of bridge RC beams strengthening using the FRP lamellas and strips from the viewpoint of determining the resistance of the strengthened RC beams