Developments in seismic structural analysis and design admin December 25, 2015 Sách hay Video đang hot BẤM ĐỂ XEMAfter a brief overview of the world-wide state-of-practice in seismic design, nonlinear structural response spectra for strength, ductility and number of yield reversals as a function of building period and structure strength for several strong motion earthquakes are presented. Illustrations of three-dimensional mesh surfaces for the absolute seismic energy input and the dissipated hysteresis energy for selected earthquakes are given. These results are compared with conventionally evaluated elastic response spectra and code criteria. The issues of overstrength factors in the Mexico City code are then examined. The remainder of the paper is devoted to the description of a simple frictional energy dissipating connection. Its behaviour in cyclic tests and in shake table tests of a three-storey braced steel structure is illustrated. Xem chi tiết và đăng ký