000012017 001__ 12017
000012017 005__ 20141205160011.0
000012017 04107 $$aeng
000012017 046__ $$k2008-10-12
000012017 100__ $$aWang, Haibo
000012017 24500 $$aSeismic Stability of Detached Concrete Block of Concrete Gravity Dam

000012017 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012017 260__ $$b
000012017 506__ $$arestricted
000012017 520__ $$2eng$$aUltimate state of a dam can be defined by its function of keeping the ponded water under control. An existing crack can penetrates the dam before subsequent earthquakes may form a detached concrete block. It is indisputable that the seismic stability of the block is very important for keeping the ponded water under control. Analytical procedures are developed to determine the motion of a free-standing block subjected to horizontal ground acceleration, slide, rock, rock-slide as well as impact when it rocks back and forth. The results reveal that the block begins to slide before the first impact even though it starts in a pure rocking mode. Numerical method FEM has been used to solve this large displacement contact problem of free-standing block. Analytical and numerical results consist with each other well. In consequence, the dynamic responses of a concrete gravity dam with crack at upper position forming a detached block are studied with FEM procedure. Its stability is studied for two types of cracks and the results indicate that the detached block of a dam of Type B crack is more vulnerable to be overturned by horizontal ground motion.

000012017 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012017 653__ $$aConcrete gravity dam, Dynamic stability, Detached concrete block, Earthquake, Free-standing block

000012017 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012017 720__ $$aWang, Haibo
000012017 8560_ $$ffischerc@itam.cas.cz
000012017 8564_ $$s446844$$uhttps://invenio.itam.cas.cz/record/12017/files/S13-030.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S13-030.
000012017 962__ $$r9324
000012017 980__ $$aPAPER