What question did this study set out to answer?

This research aims to investigate the seismic behaviour of composite CHS-to-I beam joints with passing through plates.

February 21, 2026Procedia Structural Integrity0 citationsOpen Access

Seismic behaviour of enhanced composite CHS-to-I beam joints with passing through plates

ANAgnese Natali FFFrancesco Fabbri DMDaniele Mattoccia

Key Points

This research aims to investigate the seismic behaviour of composite CHS-to-I beam joints with passing through plates.
Conducted experimental tests on composite CHS-to-I beam joints
Used plates with laser cuts for connection between beams and columns
Welded plates to concrete-filled columns for stability
Monitored failure in welds under horizontal loads
Developed numerical models to simulate joint behaviour
Observed weld failure in specific load conditions
Demonstrated enhanced performance of composite joints under seismic loads
Numerical models provided insights into joint behaviour and structural response

Abstract

This paper presents the experimental behaviour of a composite CHS-to-I beam joint, where the connection between the two is made by plates passing through the column via specific laser cuts realised on the latter. The plates are welded to the column, which is filled with concrete. The system is also equipped with a composite slab connected to the beams through shear studs. The node has been designed to observe failure in the welds, which have been designed with enhanced calculations from previous dedicated tests, and with care in realisation to fully penetrate through the surfaces to be connected. The behaviour of the node under monotonic horizontal load has been observed, and finally, numerical models have been developed to understand the behaviour of all the components better.

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