000011489 001__ 11489
000011489 005__ 20141205155915.0
000011489 04107 $$aeng
000011489 046__ $$k2008-10-12
000011489 100__ $$aSabatino, Riccardo
000011489 24500 $$aSeismic Performance Assessment of Lightly Reinforced Concrete Intake Towers

000011489 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011489 260__ $$b
000011489 506__ $$arestricted
000011489 520__ $$2eng$$aIn the UK, most of the existing stock of concrete intake towers in reservoirs has been constructed for gravity loading only, with limited amounts of steel reinforcement provided essentially for crack control. Typically reinforced concrete towers have circular or rectangular hollow cross-sections. The complex geometry of the towers, also complicated by the presence of various openings and appendages, makes the vibrational characteristics of such structures to vary considerably. This paper describes a series of tests aimed at investigating the seismic performance of typically reinforced, non-seismically designed towers. Monotonic and cyclic push-over tests were performed on 1/6th scaled models. The results from the physical tests were used to validate a 3D nonlinear finite element model of the towers, using embedded steel reinforcement and a smeared crack model to simulate crack properties of the concrete material. The dynamic performance of the structures was investigated by developing a simplified single degree of freedom model and performing a number of simulations to obtain fragility curves of the system. The degrading, hysteretic properties of the towers were simulated using a Bouc-Wen model. A probabilistic approach was selected as the basis of the performance evaluation process using fragility analyses as a tool for modelling the uncertainty associated with the parameter selection. Based on the experimental and analytical results, a staged assessment procedure for the seismic performance assessment of the towers was proposed.

000011489 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011489 653__ $$aIntake towers, nonlinear, seismic, performance, simplified model

000011489 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011489 720__ $$aSabatino, Riccardo$$iCrewe, A. J.$$iDaniell, W.E.$$iTaylor, Colin A.
000011489 8560_ $$ffischerc@itam.cas.cz
000011489 8564_ $$s408445$$uhttps://invenio.itam.cas.cz/record/11489/files/S13-026.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S13-026.
000011489 962__ $$r9324
000011489 980__ $$aPAPER