000011141 001__ 11141
000011141 005__ 20141205155840.0
000011141 04107 $$aeng
000011141 046__ $$k2008-10-12
000011141 100__ $$aNasrollahi, S.Mehdi
000011141 24500 $$aDetermination of Excess Pore Pressure in Earth Dam After Earthquake

000011141 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011141 260__ $$b
000011141 506__ $$arestricted
000011141 520__ $$2eng$$aPore pressure within the core of the embankment dams play a decisive role in performance of the earth dams. Although it may be high during the construction stage of the dam, it will be dissipated to a reasonable level as the consolidation process of the core is progressing in the long term. However, if these dams experience heavy earthquakes in short time, the rapid increase of the pore pressure may put the dam at risk in some critical conditions. In this paper the Excess pore pressure development of the Karkheh large embankment dam during the earthquake loading has been investigated. The Karkheh Dam is the largest storage dam in Iran that has been recently constructed in the south-west of the country. This is an earth dam by a mixed clay core. The length of the dam crest is 3030 m and its maximum height at the river section is 127 m. In the analyses carried out in this study, the FLAC-2D was used. To prepare the initial requirements for doing the dynamic analyses, the dam was modeled from the beginning of the construction. Different construction stages and also the impounding stages of the dam were modeled by 32 stages from the beginning of the dam construction up to Dec.2004. After application of the selected accelerogram to the model and doing the dynamic analysis, considerable changes happen both in values and in the pattern of the pore pressure developments. The results of the dynamic analyses revealed that the value of the developed pore pressure at the mid. Levels of the core increases and its distribution pattern changes during an earthquake.

000011141 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011141 653__ $$aKarkheh Dam, Mixed clay core, non-linear dynamic analysis, pore pressure, earthquake.

000011141 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011141 720__ $$aNasrollahi, S.Mehdi
000011141 8560_ $$ffischerc@itam.cas.cz
000011141 8564_ $$s4199484$$uhttps://invenio.itam.cas.cz/record/11141/files/04-01-0114.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0114.
000011141 962__ $$r9324
000011141 980__ $$aPAPER