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Experimental and Numerical Studies on the Seismic Response of R.C. Hollow Bridge Piers
Authors:Email author" target="_blank">Gian?Michele?CalviEmail author  Alberto?Pavese  Alessandro?Rasulo  Davide?Bolognini
Institution:(1) Dipartimento di Meccanica Strutturale, University of Pavia Via Ferrata, 1 – 27100 Pavia (PV), Italy;(2) Dipartimento di Meccanica, Strutture, Ambiente e Territorio, University of Cassino Via Di Biasio, 43 – 03043 Cassino (FR), Italy;(3) European Centre for Training and Research in Earthquake Engineering (Eucentre) Via Ferrata, 1 – 27100 Pavia (PV), Italy
Abstract:Appropriate seismic assessment of reinforced concrete bridges is an important challenge in structural engineering in consideration of the number and relevance of bridges built without applying advanced codes of practice and of the strategic role of transportation networks in modern economy. This paper focuses on some relevant aspects of the damage development and collapse modes of hollow piers, as commonly designed in the past. The following aspects have been considered: absence of confinement, inadequate shear strength, shifting of the critical section, insufficient length of lap splices. A series of experimental tests has been designed and performed; the capacity of predicting appropriate results of formulations recommended in codes of practice or proposed in recent research documents has been checked comparing experimental and analytical results.
Keywords:bridge piers  collapse modes  existing bridges  hollow section  lap splice  seismic response  shear action  vulnerability
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