Numerical investigation of the resistance of precast RC pinned beam-to-column connections under shear loading

Georgia D. Kremmyda*, Yasin M. Fahjan, Ioannis N. Psycharis, Spyros G. Tsoukantas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

In precast technology, the effective design and construction are related to the behaviour of the connections between the structural members in order to cater for all service, environmental and earthquake load conditions. Therefore, the design and detailing of the connections should be undertaken consistently and with awareness of the desired structural response. In the research presented herein, an analytical expression is proposed for the prediction of the resistance of precast pinned connections under shear monotonic and cyclic loading. The proposed formula addresses the case where the failure of the connection occurs with simultaneous flexural failure of the dowel and compression failure of the concrete around the dowel, expected to occur either when (i) adequate concrete cover of the dowels is provided (d > 6 D) or (ii) adequate confining reinforcement (as defined in the article) is foreseen around the dowels in the case of small concrete covers (d < 6 D). The expression is calibrated against available experimental data and numerical results derived from a nonlinear numerical investigation. Emphasis is given to identifying the effect of several parameters on the horizontal shear resistance of the connection such as: the number and diameter of the dowels; the strength of materials (concrete, grout, steel); the concrete cover of the dowels; the thickness of the elastomeric pad; the type of shear loading (monotonic or cyclic); the pre-existing axial stress in the dowels; and the rotation of the joint. In addition, recommendations for the design of precast pinned beam-to-column connections are given, especially when the connections are utilised in earthquake resistant structures.

Original languageEnglish
Pages (from-to)1511-1529
Number of pages19
JournalEarthquake Engineering and Structural Dynamics
Volume46
Issue number9
DOIs
Publication statusPublished - 25 Jul 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
Copyright © 2017 John Wiley & Sons, Ltd.

Funding

The experimental data used in this research were obtained within the SAFECAST Project ‘Performance of Innovative Mechanical Connections in Precast Building Structures under Seismic Conditions’ (Grant Agreement No. 218417-2) in the framework of the Seventh Framework Programme (FP7) of the European Commission.

FundersFunder number
Seventh Framework Programme
European Commission
Seventh Framework Programme

    Keywords

    • cyclic and monotonic response
    • nonlinear numerical investigation
    • pinned beam-to-column connections
    • precast
    • pure shear
    • shear resistance

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