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This article shows the influence of axial force eccentricity on high strength concrete columns design. The behavior of columns made of normal, middle and high strength concrete with slenderness values between 20 and 60 under an eccentric axial force has been studied. Structural analysis has been developed by means of software which considers both geometrical and mechanical non-linearity. The sequence of points defined by increasing values of axial force and bending moment produced by eccentricity has been represented on the cross-section interaction diagram until failure for each tested column. Then, diagrams depicting the relationship between failure axial force and column's slenderness have been drawn. The loss of bearing capacity of the member for normal and middle strength columns when compared with the bearing capacity of their cross-section is more noticeable as axial force eccentricity assumes higher values. However, this situation reverses for high strength columns with high slenderness values. On the basis of results obtained, the accuracy level for the moment magnifier method was checked. Despite the good concordance in most of the cases, it was verified that the moment magnifier method leads to excessively tight results for high strength concrete columns with high slenderness values. In these specific cases, a coefficient which amends the column rigidity is proposed so as to obtain safer values.

Abstract

Sheds (Spa. Tinglados) located next to the docks of Valencia Port, are heritage buildings originally intended for storage of goods. They are formed by a repetitive metal module between masonry constructions. By their composition, rhythm, monumentality and ornamentation they have become an interesting example of the Valencian industrial architecture. Nowadays they are cataloged like Building of Local Relevance. Since their construction, these buildings have suffered the vicissitudes of history. For example, they were bombed during the Spanish Civil War and later two of the initial six buildings were demolished. In addition, they show the damages caused by the aggressiveness of maritime environment and the condition of various events held in its proximity. There have been several projects that have enabled their reconstruction, restoration of structural and decorative elements and reform to adapt to new functional requirements. Tinglado #2, which had not been intervened since 1984, came to present an image of worrying degradation mainly due to corrosion of the structure and roof, cracking and spalling of items of masonry facades and the presence of improper facilities. This paper will explain the form, function, construction and structure of this interesting industrial architecture. It will review the effect of the passage of history and time, will describe the extent of damages achieved in Tinglado #2 and will show the intervention to which it has recently been subjected.