Experimental and Analytical Study on the KT-joints of the All-welded Steel Truss Bridge

DOI

10.2991/icmce-14.2014.182How to use a DOI?

Keywords

KT-joint, All-welded Steel Truss, Full-scale Fatigue Test, Structural Stress Method.

Abstract

In order to fully understand the anti-fatigue performance of KT-joints in the all-welded steel truss of Haihe Grand Bridge in Tianjing, two experiment--one fatigue test using a full-scaled KT-joint and the other fatigue test using two groups of T-components (a total of 8 components) cut out from the joints--and the finite element analysis were carried out. As revealed in the test result, the critical welds of the joint, under the design load or 5 million cycles of load, does not display fatigue failure; for the T-type components, after both Group A and Group B are subjected to 5 million cycles and 6 million cycles of load, respectively, only one component in Group A displays fatigue failure. The experiments are then well simulated by the finite element analysis. As verified by the experiments and the FE analysis, the KT-joints of the real bridges have adequate fatigue resistance, provided that the welding quality is rigorously controlled.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shun-Yao CAI
AU  - Wei-Zhen CHEN
AU  - Yang ZHAO
PY  - 2014/12
DA  - 2014/12
TI  - Experimental and Analytical Study on the KT-joints of the All-welded Steel Truss Bridge
BT  - Proceedings of the 2014 International Conference on Mechanics and Civil Engineering
PB  - Atlantis Press
SP  - 1008
EP  - 1014
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmce-14.2014.182
DO  - 10.2991/icmce-14.2014.182
ID  - CAI2014/12
ER  -