1 ASSESSMENT OF SINGLE-STOREY PRECAST CONCRETE INDUSTRIAL BUILDINGS WITH HINGED BEAM-COLUMN CONNECTIONS WITH AND WITHOUT DOWELS Manya DEYANOVA 1 , Stefano PAMPANIN 2 and Roberto NASCIMBENE 3 ABSTRACT Recent seismic events in Europe and especially in Northern Italy have motivated a lot of analytical and experimental research on the seismic behaviour of single-storey precast reinforced concrete (RC) industrial buildings used mainly for manufacturing plants and storehouses. Seemingly with a regular and straightforward load path, the seismic response of these buildings is characterised by many uncertainties. One of the main source of uncertainty is the local behaviour of the semi-rigid beam- column connections, also defined as pinned or hinged connections. Research by others has shown that ignoring the rotational and ultimate capacity of these beam-column connections when analysing the global response of the building can be misleading and not necessary on the conservative side (Bellotti et al., 2009). Although various codes provide design guidelines on the maximum strength of the most common beam-column connections, engineers face the difficulty to predict their performance and expected deformation/rotation capacity when assessing existing precast RC structures. Another source of ambiguity is the response of the slender columns, whose post-yielding behaviour and ultimate capacity do not necessary follow well-known empirical models and procedures for columns with a much lower shear aspect ratio (Fischinger et al., 2008). Moreover, the performance of such columns will be significantly influenced by the variation of the axial load, P-Delta effects, insufficient transverse reinforcement and, as recently proven by Boys et al., (2008), bidirectional loading effects. The aim of the present study is to address the aforementioned issues through a detailed analysis and application of existing theoretical methods. The case study is a single-storey industrial precast building that consists of two prototype frames with the most common geometry and beam-column connections found in this building typology in Italy. The selection was based on post-earthquake reports after the Emilia-Romagna earthquake in Northern Italy, 2012 and technical documents issued by RELUIS, 2008. The ultimate capacity, ductility and dissipative characteristics of the analysed frames are discussed which is also useful for the development of adequate retrofit and design techniques. INTRODUCTION In the third quarter of the previous century, prefabricated RC structures started gaining popularity. Their qualities were more often recognised and they became a common structural type where large open space was required. Built 30 to 40 years ago, nowadays these structures, by definition, do not meet current 1 PhD student, ROSE Programme, UME School, IUSS Pavia, Italy, Institute for Advanced Study - [email protected] 2 Professor, Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch, New Zealand - [email protected] 3 Researcher at European Centre for Training and Research in Earthquake Engineering (EUCENTRE), Pavia, Italy - [email protected]
ASSESSMENT OF SINGLE-STOREY PRECAST CONCRETE INDUSTRIAL BUILDINGS WITH HINGED BEAM-COLUMN CONNECTIONS WITH AND WITHOUT DOWELS
Jun 18, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
