000018313 001__ 18313
000018313 005__ 20170118182216.0
000018313 04107 $$aeng
000018313 046__ $$k2017-01-09
000018313 100__ $$aBei, Cheng
000018313 24500 $$aA Study Into Effects of Plate Stiffeners on the Retrofitted Deep RC Coupling Beams

000018313 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018313 260__ $$b
000018313 506__ $$arestricted
000018313 520__ $$2eng$$aExisting deep reinforced concrete (RC) coupling beams with low shear span ratios and conventionally reinforced shear stirrups tend to fail in a brittle manner with limited ductility and deformability under reversed cyclic loading. Previous studies have developed a new retrofitting method with stiffened laterally restrained steel plate (LRSP) for existing deep RC coupling beams. The additional stiffeners can prevent plate buckling and ensure that the steel plate has a wider yield area and hence the retrofitted coupling beams could achieve a higher energy dissipation capability. However, according to experimental study, it can be found that too much stiffening would lead to a loss of deformability of the retrofitted coupling beams. In this paper, by using finite element analysis program MSC.Marc, plate stiffeners with different arrangement were adopted in order to study the effect of stiffeners on the performances of the retrofitted coupling beams. The numerical results revealed that by adding more stiffeners on steel plate, the shear capacity of the retrofitted coupling beam could be increased slightly. And the stiffeners set passing the center point of steel plate could effectively restrain plate buckling. Moreover, stiffeners set passing the plate center point of steel plate and diagonally stiffeners could better control the cracking of concrete and the failure modes are more ductile. These two kinds of arrangement are more preferable for enhancing the seismic performances of the retrofitted deep coupling beams.

000018313 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018313 653__ $$aDeep coupling beams, Seismic retrofitting, plates buckling, Plate stiffeners, Finite element analysis.

000018313 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018313 720__ $$aBei, Cheng$$iCantian, Yang$$iMengjie, Zhou$$iCaihua, Shi
000018313 8560_ $$ffischerc@itam.cas.cz
000018313 8564_ $$s703911$$uhttps://invenio.itam.cas.cz/record/18313/files/1212.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1212.
000018313 962__ $$r16048
000018313 980__ $$aPAPER