Testing and modeling of the behavior of wooden stairs and stair joints |
| |
| Authors: | Anna Pousette |
| |
| Institution: | 1.SP Swedish National Testing and Research Institute, Building Technology and Mechanics / Wood Technology Skeria 2,Skellefte?,Sweden |
| |
| Abstract: | Joints in traditional wooden stairs can be constructed in many different ways. Connections between tread and string are commonly
made with tenons and screw joints. It is often hard to know which joint rigidity should be used in calculations. To study
this type of stair, a total of 12 small straight stairs with three steps each were tested. The stairs were loaded and the
deformation was measured. Modeling of the stairs with a finite element program was also performed, using linear elastic models
in the analysis. The conclusion derived from the study is that the tested tread-to-string connections are not very rigid.
Tolerances and accuracy of manufacture of the stair parts are important for the behavior of the joints. Comprehensive knowledge
about stair joints can be used for development of new cost-effective and reliable design tools for stairs. In a computer program
for stair design based on beam elements, the treads in this type of staircase should, according to this study, preferably
be calculated as being hinged to the string, or else the rigidity of the joint should be a function of joint parameters. |
| |
| Keywords: | Joint Wooden stair FE modeling Tenon |
| 本文献已被 SpringerLink 等数据库收录！ |
|
