- Author
-
Rodrigues, J. P. C.
- Title
- Fire Resistance of Steel Columns With Restrained Thermal Elongation.
- Coporate
- Universidade Tecnica de Lisboa
- Report
-
THESIS
December 2000
399 p.
- Keywords
-
steel columns
|
fire resistance
|
temperature
|
heating
|
fire resistance tests
|
steels
|
steel structures
- Identifiers
- characterisation of the test specimens at room temperature; fire resistance tests on small steel elements with restrained thermal elongation
- Abstract
- This Thesis describes a systematic study of the influence of certain parameters on the fire resistance of compressed steel elements with restrained thermal elongation. The parameters studied were: the slenderness of the element, the stiffness of the surrounding structure and the eccentricity of the loading. Nearly 190 tests were performed on small pin-ended steel bars and 18 tests on small built-in steel bars. For the pin-ended bars, four different slenderness values (319, 199, 133 and 80), two eccentricities of the compression load (1 mm and another equal to the thickness of the bar) and six values of restraint to axial elongation (0, 1, 10, 24, 42 and 98 kN/mm) were tested. For the built-in bars, two slenderness values (80 and 32) and three values of restraint to axial elongation (1, 10 and 98 kN/mm) were tested. Tensile tests and compression tests at room temperature were conducted to find the mechanical properties of the steel bars used in the fire resistance tests.