000018890 001__ 18890
000018890 005__ 20170118182246.0
000018890 04107 $$aeng
000018890 046__ $$k2017-01-09
000018890 100__ $$aAlmeida, João
000018890 24500 $$aThe Effect of Bond-Slip in the Numerical Assessment of RC Frames Under Cyclic Loading

000018890 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018890 260__ $$b
000018890 506__ $$arestricted
000018890 520__ $$2eng$$aBond-slip may have significant influence on the assessment, with numerical models, of reinforced concrete structures subjected to cyclic loadings, whether static or dynamic. Its influence is discussed with the correlation of experimental and analytical results, where two numerical models are considered, including a perfect bond fiber-section finite element formulation and a force-based fiber-section model including bond-slip in the vicinity of the frame joints, both exterior and interior. In this case, the model implemented makes it possible to consider the coupling effect of the response of the beams adjacent to the joint, and the models are constructed from the geometrical and material characteristics of the structure, without any calibration procedures. The experimental results are from a reinforced concrete column and a beam-column subassemblage, both subjected to static cyclic loadings, with predefined displacements sequences for the element-ends, and from a shaking table test of a one bay two-story reinforced concrete frame structure. The comparisons show that the considered bond-slip based model makes it possible to satisfactorily predict the response of reinforced concrete frames under both static and dynamic cyclic loadings. The influence of reinforcement slippage was evaluated by comparison of the previous results with those obtained with the perfect bond-based model. This made it possible to conclude that the accuracy of the model considering bond-slip is significantly superior to that of the perfect bond model. Furthermore, responses obtained with the previous model show the pinching effect, which is characteristic of reinforced concrete structures and significantly changes the hysteretic dissipated energy, not delivered by the latter model. This can also be seen in the effect of bond-slip in the response of the fibers which model the reinforcing rebars.

000018890 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018890 653__ $$abond-slip, reinforced concrete, cyclic loading, numerical models

000018890 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018890 720__ $$aAlmeida, João$$iLobo, Paulo$$iGuerreiro, Luis
000018890 8560_ $$ffischerc@itam.cas.cz
000018890 8564_ $$s1077632$$uhttps://invenio.itam.cas.cz/record/18890/files/2422.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2422.
000018890 962__ $$r16048
000018890 980__ $$aPAPER