Kamil Burkovič

Foundation Slab in Interaction with Subsoil

In the paper the experiment results of deformation in foundation slab segment in interaction with subsoil are presented. Pilot measurement is carried out on original subsoil with characteristics which were tested in cooperation with geotechnics specialists. Concrete precast slab with square dimensions 500 mm and with thickness 48 mm made of plain concrete is exposed to vertical load. The tests results are compared with bending moments and deformations analysed according to subsoil models given in Eurocodes using FEM analysis.

Experimental Soil - Concrete Plate Interaction Test and Numerical Models

State of stress in foundation structure is structure is significantly influenced by the contact stress course in the subsoil. At the Faculty of Civil Engineering VSB TU Ostrava testing device was constructed so that the phenomena could be experimentally investigated and compared with numerical models. The objective of this paper is also improving and developing the soil-structure interaction analysis based on the experimental results and finite element method (FEM).

Reinforced Concrete Structure of the Puppet Theatre in Ostrava

The annex building for the alternative scene in the Puppet Theatre of Ostrava was designed and constructed as an interesting structure from raw face concrete. The size of the annex building is not so big. It is, however, distinct in terms of the shape and complexity. The annex building consists of the above-ground and underground parts and the outside amphitheatre. The above-ground part consists of a reinforced concrete monolithic structure with five floors. The façade is made from raw face concrete. The underground part comprises two underground floors and an inside amphitheatre which is connected to the outside amphitheatre. The paper describes the process and bottlenecks in the design and construction of the building which is interesting in terms of architecture and construction.

Developing of Hydration Heat of the Massive Foundation in the Třinecké Železárny

Heavy industry, industrial plants and technology facilities use really big manufacturing units or assemblies with the weight of tens of tons. In case of rotary kilns, the weight can reach hundreds of tons. During the production process, those units move, creating, in addition to considerable static effects, big dynamic effects. Industrial facilities often face failures of the reinforced concrete foundation which is loaded dynamically by a rotating machine. Such failures typically result in cracks and failures of any of the foundation cross-section. Thus, a part of the foundation starts deviating, the rigidity goes down, geometry of the machine position is changing and an accident may occur - for instance, bearings may fail or malfunctions may occur in the machine. This has also happened in the case described in this article. The subject of the article is the large foundation structure of the rolling device in the Block Mill I in Třinecké železárny a.s. The slab of the foundation structure is approximately a T-shape, which has nearly 43 m in one direction and over 30 m in the other direction. The monolith foundation slab will be 2.0 m thick, the whole foundation structure will be 2.0 - 8.0 m thick. With such an extensive foundation, considerable attention must be paid not only to the design and realization, but also to the effect of the hydration heat.

Testing and Modelling of Concrete Pile Foundations

Foundation of building on concrete piles is often used when it is necessary to carry the load into larger depth as by common foundation. Bearing capacity of piles or piled raft foundation is wide area to research. This paper deals with experimental load test of concrete pile and with their numerical modelling. Several types of foundation construction were tested and two kinds will be presented and compared in this paper - reinforced concrete foundation slab and raft foundation (made of reinforced concrete foundation slab supported by drilled reinforced concrete pilot). These types of foundation constructions were constructed as models, in a reduced scale, approx. 1:10. The size had to be adjusted due to limited capacity of the testing equipment and financial reasons. Except measuring of the foundation behaviour, there was also carried out measurement of the adjacent terrain.The aim of this paper is to compare the behaviour of rigid slab and the piled raft. The measurement results will be then compared with the results of numerical modelling.

Coupled Timber – Concrete Ceiling Using Bonded Shear Connectors

This paper deals with the possibilities of using coupled timber-concrete structures by means a glued coupling bar. The described process of static reinforcement is particularly suitable for reconstruction of historic timber ceilings and places where it is necessary to prevent damage to non-supporting structures (e.g. ceiling, plaster, stucco decorations, etc.). The method is also employed in those cases where it is necessary to allow traffic-flow in the rooms below the reconstructed ceiling. The article describes the specific technological process that has been examined in the reconstruction of the ceiling structure of a house on Sokolska Street in Ostrava. Following experimental testing in laboratories at the Faculty of Civil Engineering VSB - TU Ostrava the technology of bonded shear bars under static reinforcement of timber ceilings was first applied and successfully tested in construction practice.