Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Investigations into Deformations Resulting from Stresses Perpendicular to Grain in Swedish Whitewood and Redwood in Respect of the Dimensioning of Concrete Formwork
The purpose of the investigation was to compile quantitative relations between stresses and subsequent deformations perpendicular to grain. Full-scale deformation tests were carried out on Swedish whitewood and redwood. During some of the tests, loading deformations were registered, and deformations at dead load (creep) were noted during others. The outcome of the results was that a relationship was obtained which quantitatively describes the dependence of the deformation resulting from stresses perpendicular to grain upon the load length parallel to grain, the volume weight, the humidity quotient and the load time. To facilitate practical application, the relations have been adapted to applicable grades of structural timber and have been represented graphically. To this can be added the discussion given in the appendix concerning the intensities and periods of active pressure on concrete forms which give rise to deformations resulting from stresses perpendicular to grain in supporting timber structure of concrete formworks. An application of the results of this investigation provides us with the possibility of calculating and limiting deformations in supporting timber structure of concrete forms.
Experimental Investigations into Deformations Resulting from Stresses Perpendicular to Grain in Swedish Whitewood and Redwood in Respect of the Dimensioning of Concrete Formwork
The purpose of the investigation was to compile quantitative relations between stresses and subsequent deformations perpendicular to grain. Full-scale deformation tests were carried out on Swedish whitewood and redwood. During some of the tests, loading deformations were registered, and deformations at dead load (creep) were noted during others. The outcome of the results was that a relationship was obtained which quantitatively describes the dependence of the deformation resulting from stresses perpendicular to grain upon the load length parallel to grain, the volume weight, the humidity quotient and the load time. To facilitate practical application, the relations have been adapted to applicable grades of structural timber and have been represented graphically. To this can be added the discussion given in the appendix concerning the intensities and periods of active pressure on concrete forms which give rise to deformations resulting from stresses perpendicular to grain in supporting timber structure of concrete formworks. An application of the results of this investigation provides us with the possibility of calculating and limiting deformations in supporting timber structure of concrete forms.
Experimental Investigations into Deformations Resulting from Stresses Perpendicular to Grain in Swedish Whitewood and Redwood in Respect of the Dimensioning of Concrete Formwork
G. Backsell (Autor:in)
1966
141 pages
Report
Keine Angabe
Englisch
Whitewood–limecrete joints of supplementary stud-slip angles
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