000012000 001__ 12000
000012000 005__ 20141205160009.0
000012000 04107 $$aeng
000012000 046__ $$k2008-10-12
000012000 100__ $$aVoyagaki, Elia
000012000 24500 $$aResponse of Sliding Structures to Near-Fault Pulses: Numerical and Analytical Solutions

000012000 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012000 260__ $$b
000012000 506__ $$arestricted
000012000 520__ $$2eng$$aAnalytical and numerical solutions are presented for the plastic response of sliding structures to idealized ground acceleration pulses. These motions are typical of near-fault earthquake motions generated by forward fault-rupture directivity and may inflict large strains and displacements in the absence of substantial soil strength. The structures are modeled as rigid blocks on inclined frictional planes. Although idealized, these models are widely used by engineers for simulating a variety of systems including isolation devices, monumental structures, retaining walls, slopes, embankments and dams. Four basic simple waveforms are examined: (1) triangular; (2) sinusoidal; (3) exponential; (4) rectangular. In the first part of the article, the effect of peak strength, residual strength, and number of excitation cycles, on peak displacements is presented. Results are presented in the form of dimensionless graphs and regression formulas that elucidate the salient features of the problem. In the second part of the article, closed-form solutions are derived for plastic response and associated peak velocities and displacements. It is shown that all three time histories of ground motion (i.e., acceleration, velocity, and displacement) control peak response – contrary to the widespread view that ground velocity alone is of leading importance. The results are compared with conventional Newmark-type approaches to illustrate certain practical aspects of the solution.

000012000 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012000 653__ $$anear-fault, pulses, directivity, sliding systems, ground velocity, closed-form solution

000012000 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012000 720__ $$aVoyagaki, Elia$$iMylonakis, George$$iPsycharis, Ioannis
000012000 8560_ $$ffischerc@itam.cas.cz
000012000 8564_ $$s260340$$uhttps://invenio.itam.cas.cz/record/12000/files/S28-003.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S28-003.
000012000 962__ $$r9324
000012000 980__ $$aPAPER