000018964 001__ 18964
000018964 005__ 20170118182250.0
000018964 04107 $$aeng
000018964 046__ $$k2017-01-09
000018964 100__ $$aCortés-Puentes, W. Leonardo
000018964 24500 $$aSeismic Retrofit of Concrete Shear Walls With Tension-Only Sma Braces

000018964 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018964 260__ $$b
000018964 506__ $$arestricted
000018964 520__ $$2eng$$aA retrofitting technique, using tension-only superelastic Shape Memory Alloy (SMA) braces, was developed to enhance the performance of seismic deficient squat concrete shear walls. The SMA braces were designed to improve re-centering (minimize residual deformations) and to control shear deformations, while improving strength, ductility and energy dissipation capacities. Two squat reinforced concrete walls: an original and a companion retrofitted wall were tested to investigate the benefits of the tension-only SMA braces on the seismic response. Retrofitting of the concrete wall was based on a bi-diagonal layout where two crossing tension-only SMA braces were connected to the base and top of the wall. The walls were tested to failure with incremental cyclic loading. The experimental results demonstrated that the tension-only SMA braces are capable of improving the seismic response of squat reinforced concrete walls. The retrofitted wall experienced higher strength, greater energy dissipation and reduced permanent deformation. Furthermore, the re-centering properties of the SMA contributed to the reduction of pinching of the hysteretic response due mainly to the clamping action of the SMA bracing while recovering its original length.

000018964 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018964 653__ $$aSeismic Retrofit; Shape Memory Alloy; Tension-Only Braces; Reinforced Concrete; Squat Shear Walls

000018964 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018964 720__ $$aCortés-Puentes, W. Leonardo$$iPalermo, Dan
000018964 8560_ $$ffischerc@itam.cas.cz
000018964 8564_ $$s664484$$uhttps://invenio.itam.cas.cz/record/18964/files/2585.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2585.
000018964 962__ $$r16048
000018964 980__ $$aPAPER