000018794 001__ 18794
000018794 005__ 20170118182241.0
000018794 04107 $$aeng
000018794 046__ $$k2017-01-09
000018794 100__ $$aWong, Kevin
000018794 24500 $$aReliability of Plastic Rotation Calculations for Damage Assessment of Moment-Resisting Framed Structures

000018794 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018794 260__ $$b
000018794 506__ $$arestricted
000018794 520__ $$2eng$$aPerformance-based standards use plastic rotation as an important measure to determine whether the response meets the acceptance criteria for moment-resisting frames. Since plastic rotation is the key parameter in performance-based seismic engineering, the method used to calculate this quantity must be robust and accurate. Although engineers often rely on the plastic rotation output from structural analysis software packages to determine acceptable performance, the actual calculation methods usually depend on the analytical formulations utilized in the particular software. Difficulties in verifying the accuracy of the output results exist because material nonlinearity is often coupled with geometric nonlinearity in the analysis of moment-resisting frames, yet a robust analytical framework for the verification process is currently unavailable because of the lack of analytical theory. To address this problem, an analytical method to calculate the plastic rotations of plastic hinges in moment-resisting frames is presented in this research. The element stiffness matrices are rigorously derived using a member formulation, which includes the coupling of geometric and material nonlinearity effects from the beginning of the derivation. Numerical simulation is performed to calculate the nonlinear responses of structural models subjected to static and dynamic loads. Plastic rotations and other response measures are compared with those obtained using other methods of handling geometric nonlinearity to demonstrate the feasibility of the proposed analytical method.

000018794 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018794 653__ $$aGeometric nonlinearity; material nonlinearity; stability functions; geometric stiffness; structural analysis

000018794 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018794 720__ $$aWong, Kevin
000018794 8560_ $$ffischerc@itam.cas.cz
000018794 8564_ $$s494408$$uhttps://invenio.itam.cas.cz/record/18794/files/2255.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2255.
000018794 962__ $$r16048
000018794 980__ $$aPAPER