000020181 001__ 20181
000020181 005__ 20170118182358.0
000020181 04107 $$aeng
000020181 046__ $$k2017-01-09
000020181 100__ $$aS., Kuang J.
000020181 24500 $$aDevelopment and Validation of a Seismic Retrofit Scheme for Reinforced Concrete Beam-Column Joints

000020181 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020181 260__ $$b
000020181 506__ $$arestricted
000020181 520__ $$2eng$$aAn innovative and efficient technique is presented for the seismic retrofit of reinforced concrete beam-column joints using prestressed high-strength steel wires (PHSW). This method is to improve the seismic performance and enhance the shear strength of beam-column joints with non-seismic design as well as to overcome the shortcomings of traditional seismic retrofitting techniques for the joints. Five interior beam-column joints that were tested under reversed cyclic loading. The specimens included one un-retrofitted control specimen and four strengthened joints using proposed PHSW technique including two joints without transverse beam and two with transverse beams. Test results showed a significant increase in the joint shear capacity and reduction of the cracks on the joints in retrofitted specimens. In addition, energy dissipation and ductility level of beam-column joints were improved in retrofitted specimens compare to control specimen. The failure mode of the retrofitted specimens altered from brittle shear failure of beamcolumn joints to the ductile flexural failure. Meanwhile, no anchorage failures at lap splice locations of steel wire were observed in the tests. External retrofit technique proposed in this paper provides excellent tools to overcome the stress-lag between the retrofitted and the original part, by increasing the positive confinement around the joint.

000020181 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020181 653__ $$aBeam-column joint, Seismic retrofit, Prestressed high-strength steel wire (PHSW), Seismic behavior, Cyclic load

000020181 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020181 720__ $$aS., Kuang J.$$iZixiong, Guo$$iQunxian, Huang
000020181 8560_ $$ffischerc@itam.cas.cz
000020181 8564_ $$s1391149$$uhttps://invenio.itam.cas.cz/record/20181/files/70.pdf$$yOriginal version of the author's contribution as presented on USB, paper 70.
000020181 962__ $$r16048
000020181 980__ $$aPAPER