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Abstract. This paper deals with the comparison of results of dynamic test and numerical modelling of a road bridge across the Dr. Kudela street in the street Rudná in Ostrava. The bridge is a reinforced concrete structure, made of post-tensioned KA-beams. On the bridge were verified material properties. Calculation model to validate the static and dynamic behavior of structures was created. On the bridge were measured dynamic properties (frequency, mode shapes and attenuation) during excitation construction by hydraulic vibration exciter. Article will focus on comparing the results of the calculation of dynamic structures and properties measured on real structure upon excitation. Description of structureThe bridge object consists of two bridge structures, which are composed of three fields (11 m + 16 m + 11 m). Each bridge structure is formed by 14 prefabricated KA-61 beams (in each field). The width of bearing structure is 13.25 m. The bridge is placed on the supports and elastomeric bearings. Bridge foundations are monolithic reinforced concrete. Outer supports are massive reinforced concrete. Spans of individual fields of the bridge are 11 m (short field) and 16 m (long field). During the reconstruction was made a coupling plate of thickness 160 to 300 mm. Fig. 1. View of the bridge structure.

Abstract. The paper presents diagnostic and load tests of the Inundation bridge which is part of a group of bridges called The Libeň bridge group in Prague. The Libeň bridge group consists of two arched and several framed bridges spanning the Vltava river. One of the vaulted bridges consists of 5 arches and the other vaulted bridge (called Inundation bridge) consists of only one arch. Arched bridges are extraordinary structures with both technical and historical value. Since the inundation bridge has the largest arch of whole group, it was selected for testing purposes. The bridge is assembled with three-hinged arch made of concrete. The hinges are made of reinforced concrete and lead contact slabs. Detailed measurements of geometry and material properties were made on the bridge. Based on these measurements a computer model was created to verify the behavior of the structure. Both static and dynamic calculations were performed. Measurements of dynamic characteristics were made during normal operation and with hydraulic vibration exciter. This article will focus on comparing the results of dynamic calculation of the modeled structure and properties measured on real structure excited by hydraulic vibration exciter.

This paper deals with the numerical analysis of damage to a precast reinforced concrete structural system caused by the effects of temperature changes. Specifically, the analysis aims to examine the failures in the contact place between the TT panel of the roof structure and the girder. A computer model was created based on the actual construction of the occurring disorders. Temperature changes, which act on the structure, were identified by measurements taken over a long period. The structure was modeled using GiD 11 software and calculated using the ATENA WIN program. The results of the numerical analysis and the manifestations of damage to the actual construction were mutually compared.