Tests on strengthening fasteners in riveted steel structures - fit bolts and weld studs

Author(s): Janusz Hołowaty, Bernard Wichtowski
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 804-811
Total Pages: 848
Language: English

Abstract: Issues associated with the renovation of two truss semi-gantry cranes located on a port wharf are discussed. The axial spacing of the structures is L = 71.47 m and mass m = 405 t. The cranes move on tracks at a speed of 10 m/min. A grab crane with a stable cantilever jib of capacity Q = 7.5 t and mass 63 t is installed on each structure. The top flanges of the bridge girders under the rails had cracked structural members that required replacement together with an under rail plate of section 55012 mm and length 40 m. Replacement of all the rivets with fit bolts was impossible due to the enclosed location of the bolt nuts. Therefore, the vertical rivets on the vertical axis were replaced in the two structures by weld studs numbering in total 2428 units.
The lack of a broad basis for calculating the resistance of such fasteners was the inspiration for an attempt to assess their static and fatigue strength via experimental tests. The test methodology and the results obtained are given in the paper.

Online publication :2019
Publication type : full_text
Public price (Euros) : 00