000019667 001__ 19667
000019667 005__ 20170118182331.0
000019667 04107 $$aeng
000019667 046__ $$k2017-01-09
000019667 100__ $$aZhou, Meng
000019667 24500 $$aSeismic Analysis of RC Structures With Absence of Floor Slab Constraints and Large Mass Turbine as a Non-Conventional Tmd

000019667 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019667 260__ $$b
000019667 506__ $$arestricted
000019667 520__ $$2eng$$aA case study is presented to reveal the influence of absence of floor slab constraints and large mass turbine as a nonconventional tuned mass damper (TMD) on the seismic behavior of the reinforced concrete (RC) structures and members. The investigated structure is a RC shear wall-frame power plant structure with large slab openings and a large mass turbine. In RC structures, the existence of floor slabs can usually provide strong constraints on beams so as to greatly increase their bearing capacity. However, due to some special functional demands, large area of slabs may have to be removed so that some floor beams will lose the constraints provided by slabs. In such cases, beams could be subjected to complex internal forces and develop unexpected failure modes under earthquake actions. Nonlinear time history analyses are conducted using the self-developed program COMPONA-MARC Version 1.0. The numerical model employs fiber beam-column elements with distributed plasticity approach. The complex seismic behaviors of structural members without slab constraints are elaborately simulated and analyzed. The time history analysis results indicate that for the structural members without slab constraints, significant transverse vibration and large transverse bending moment are the essential factors causing the failure of these components and should be considered with special attention in design. For the seismic effectiveness of the turbine as a TMD with large mass ratio, the optimizing approach is discussed and optimized parameters are verified by extensive numerical examples under a wide selection of ground acceleration time histories.

000019667 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019667 653__ $$aSeismic behavior; Large slab opening; Damage mechanism; Non-conventional TMD; Time history analysis

000019667 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019667 720__ $$aZhou, Meng$$iNie, Jian-Guo$$iTao, Mu-Xuan$$iDing, Ran
000019667 8560_ $$ffischerc@itam.cas.cz
000019667 8564_ $$s451904$$uhttps://invenio.itam.cas.cz/record/19667/files/4132.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4132.
000019667 962__ $$r16048
000019667 980__ $$aPAPER