Experimental results of steel truss nodes strengthen by high strength concrete encasement

• Type: Article in International Conference Proceedings Book
• Date: 2018

Authors

Ivanov, S (Author) Other; Geier, R (Author) Other; Rebelo, C (Author) Other; Pedrosa, B (Author) Other

Conference proceedings International

Title: 9TH INTERNATIONAL SYMPOSIUM ON STEEL BRIDGES

9th International Symposium on Steel Bridges

Prague, CZECH REPUBLIC, SEP 10-11, 2018

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Other information

Authenticus ID: P-00P-PV9

DOI: 10.1088/1757-899x/419/1/012034

Abstract (EN): In the old steel truss bridges one particular point of interest are the nodes. While for strengthening/refurbishment of the elements of the truss engineers can rely on more conventional methods, usually, for the nodes unique solutions have to be adopted. One integral solution, which could be implemented in a variety of steel truss nodes, is strengthening/refurbishment by totally encasing the node in high performance fibres reinforced concrete. In order to validate this idea laboratory testing of steel truss nodes strengthened by encasement with different concrete classes was initiated. The connection between the concrete and the structural steel is ensured by application of epoxy resin, no mechanical elements are added. The results of the strengthened specimens are compared with one reference bare steel node test. The strengthened specimens show reduced values of the stresses in the gusset plate as well as increase in the load bearing capacity of the connection of the elements entering the node. These results are observed even for encasement in normal class concrete of C40/50.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8