The static behavior of multiplanar tubular steel TT-joints excluding the effects of chord bending
- Delft Univ. of Technology (Netherlands). Faculty of Civil Engineering
Current design codes for the design of welded tubular connections are mainly based on extensive series of tests on simple uniplanar joints. To extend the number of experiments on multiplanar joints, Paul (1991) carried out experiments on axially loaded multiplanar TT-joints. However, in these tests, failure of the specimens was due to a combination of local failure and overall chord bending. In order to determine the influences of the geometrical parameters on the axial static strength due to local joint failure only, 11 finite element analyses have been performed on TT-joints with the same non-dimensional geometrical parameters as the joints tested by Paul. The influence of a (i.e. overall chord bending) has been excluded by applying moments to the chord ends. After making assumptions for equivalent {beta} ratios, the ultimate strengths of the multiplanar TT-joints have been related to the ultimate (local) strength formulae derived for uniplanar T and X-joints. As a result, the local strength of axially loaded multiplanar TT-joints has been described with the formulae derived for the local strength of axially loaded uniplanar T- and X-joints. The effects due to overall chord bending should be included separately, in line with the strategy described for uniplanar T-joints (van der Vegte, 1994b). The analyses which include overall chord bending, however, are not considered in the present work.
- OSTI ID:
- 264120
- Report Number(s):
- CONF-950604--; ISBN 1-880653-20-6
- Country of Publication:
- United States
- Language:
- English
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