000019285 001__ 19285
000019285 005__ 20170118182308.0
000019285 04107 $$aeng
000019285 046__ $$k2017-01-09
000019285 100__ $$aHajirasouliha, Iman
000019285 24500 $$aAnalysis of Substandard RC Buildings Strengthened With An Innovative Post-Tensioned Metal Strapping Technique

000019285 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019285 260__ $$b
000019285 506__ $$arestricted
000019285 520__ $$2eng$$aThis paper investigates analytically the efficiency of an innovative Post-Tensioned Metal Strapping (PTMS) strengthening technique at improving the seismic behaviour of a reinforced concrete (RC) building. A full-scale two-floor building with substandard reinforcement detailing at the columns and beam-column joints was tested on a shake table as part of the EUfunded research project BANDIT. After the bare building was initially damaged significantly, it was repaired and strengthened with PTMS to perform additional seismic tests at various Peak Ground Acceleration (PGA) levels. The PTMS technique improved considerably the seismic performance of the tested building. Whilst the bare building experienced critical damage at an earthquake of PGA=0.15g, the PTMS-strengthened building sustained a PGA=0.35g earthquake without compromising stability. In this study, the experimental data from the initial shake table tests are used to calibrate analytical models through nonlinear time-history analyses. To simulate deficient beam-column joints, models of steelconcrete bond-slip and bond-strength degradation under cyclic loading are considered. The results show that the PTMS strengthening intervention significantly enhanced the seismic behaviour of the substandard beam-column joints, as well as the deformation capacity of the building. It is also shown that the analytical models of both bare and strengthened buildings provide a reasonable estimate of the maximum deformation demands for earthquake excitations with different PGA levels.

000019285 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019285 653__ $$ashake table tests; RC buildings; steel strapping; nonlinear time-history analysis; inter-storey drift

000019285 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019285 720__ $$aHajirasouliha, Iman$$iPilakoutas, Kypros$$iGuadagnini, Maurizio$$iOzdemir, Zuhal$$iGarcia, Reyes
000019285 8560_ $$ffischerc@itam.cas.cz
000019285 8564_ $$s1236432$$uhttps://invenio.itam.cas.cz/record/19285/files/3301.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3301.
000019285 962__ $$r16048
000019285 980__ $$aPAPER