This paper presents research results of composite tubes filled with self-compacting concrete. The impact of the selected materials and geometric factors on resistance to the vertical shear was evaluated in this study. The resistance of the tested members was compared with recommendations given in Eurocode PN-EN 1994-1-1. From the results obtained in the tests it can be deduced that more parameters should be taken into consideration when determining resistance to the vertical shear in the interface between steel and concrete than PN-EN 1994-1-1 recommends.
The aim of this paper is to present an assessment of the slip influence on the deflection of the steel plate-concrete composite beams, which are a new type of a design concept. The proposed method is based on the procedure included in the PN-EN 1992-1-1, which has been modified with taking into consideration interface slip. The theoretical analysis was verified by experimental studies.
Early modern Spain witnessed the birth of a new social group — veterans — many of whom described their services in the form of autobiographies. Its authors reveal themselves through a narrator and self-created “me” that represents their struggle to break social barriers. On the other hand, their grief and isolation may also stem from war-infl icted trauma. This paper analyses the autobiography of Alonso de Contreras, focusing on this duality in narration, that may explain the severe situation of early modern veterans.
Palace-and park complexes play very important role in the art of gardening. Contemporarily, they draw from historic experience, taking into account also modern solutions. Nowadays, to raise the value of the above mentioned objects, elements enlivening the given area – compositions made of flowers. Part of flower beds reconstruct historic layouts, others are new elements designed to add additional aesthetic value.
This paper presents an experimental analysis of flexural capacity and deformability of structural concrete slabs prepared as composite members consisting of two concrete layers made of reinforced ordinary concrete (N) and fiber reinforced concrete (SFRC). The reinforced concrete composite slabs used in the tests were prepared in the dimensions of 600 x 1200 x 80 mm. The basis was composed of two layers consisting of SFRC, one as the top layer, and one as ordinary concrete. The results of the analysis confirm a significant improvement of structural properties of the composite slab in comparison to the slabs prepared wholly of ordinary concrete.
This paper investigates the behaviour of axially-loaded tubular columns filled with M20 grade concrete and partially replaced concrete. The parameters varying in the study are slenderness ratio (13.27, 16.58 & 19.9), and normal M20 grade concrete, partially replaced quarry dust and concrete debris. The effects of the various concrete mixes and composite action between the steel tube and the concrete core are studied and a graph visualizing the differences between the load carrying capacity and the axial deflection is plotted. Some of the performance indices like the Ductility Index (DI), Concrete Contribution Ratio (CCR), Confinement Index (θ) and Strength Index (SI) are also evaluated and compared amongst the CFST columns. From the results it has been noted that an increase in the L/D ratio decrease the behaviour of the composite columns irrespective of the in filled materials. The composite action was achieved in the CFST columns filled with partially replaced quarry dust and concrete debris when compared with hollow steel columns. The load carrying capacity of the CFST column increases by 32 % compared with the hollow tubular columns.
The town of Siemianowice Śląskie is where we can find a palace-and-park complex which nowadays serves as the Town Park. The complex used to be owned by the Henckel von Donnersmarck family; today it is open to everyone looking for either active or passive leisure. Apart from its historical value (the complex being the most significant monument of the town), the park is also of special importance to the environment. It can be seen as an enclave of greenery and a sanctuary for plants and animals. Moreover, together with the neighbouring recreation area and ecological sites, the park contributes to the symbolic “green lungs” of the town
Most of the medieval Italian cities are civitas born of the ruins of the ancient Roman civilization. Their beauty ist the origin for deep esthetical experiences, to which Sławomir Gzell gave the name bellezza. There are a few characteristic features composing the "picturesqueness", painterliness and harmony of those cities, which lead the observer to strong emotions and constant, sensual exploration. The author contemplates the aspects creating the phenomrnon of beauty of Italian cities and towns - which are the metapfor of human desires and deepest cravings.