Abstract
![CDATA[Some of the structural systems used in the agricultural, road and mining industries are subjected to cyclic loading and are therefore prone to fatigue failure under service loads. These structural systems range from trailers, road sign portals, towers, bridges and dragline structures. Recent development has resulted in the production of steel materials that are relatively higher in strength and thin-walled. There has also been an increased use of concrete-filled tubular members in structural systems especially in long span bridge structures and towers. The understanding of tubular joints with concrete-filled chords has therefore become important. This paper therefore outlines recent research that has been carried out to better understand the behaviour of various welded thin-walled tube-plate and tube-tube joints under cyclic loading. The research has also included tests on tubular joints with concrete-filled chords under cyclic loading. The research has focussed on high cycle fatigue loading which is typical of loads in the agricultural, road and mining industries. The cyclic loading reveal the typical failure modes in the empty tubular joints and tubular joints with concrete-filled chords under cyclic loading. Measurement of stress distribution is also important in understanding the behaviour of structures under cyclic loading. The measurement of stress distribution can be carried out using both experimental and numerical methods. The welded connection interface shows that the areas of high stress concentration are the hot spots where fatigue cracks initiate and propagate leading to failure.]]
Original language | English |
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Title of host publication | Proceedings of the 1st International Conference on Engineering Research and Practice, 4-5 February 2017, Dhaka, Bangladesh |
Publisher | Science, Technology and Management Crest |
Pages | 126-136 |
Number of pages | 11 |
ISBN (Print) | 9780648014706 |
Publication status | Published - 2017 |
Event | International Conference on Engineering Research and Practice - Duration: 4 Feb 2017 → … |
Conference
Conference | International Conference on Engineering Research and Practice |
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Period | 4/02/17 → … |
Keywords
- concrete-filled tubes
- joints (engineering)
- stress concentration