ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Some numerical parameters-sensitivity analysis has been conducted to evaluate thestability and propagation of the interface cracks at heel of concrete gravity dam. In this paper,utilizing the software ANSYS to simulate the stress and displacement fields of the tip of theinterface cracks between concrete gravity dam and foundation, the stress intensity factor (SIF) ofthe interface crack is analyzed using facture mechanics. Three impacting factors have beendiscussed, such as the crack length, the angle of crack, and the water height. Critical length andloads of interface crack propagation are obtained using composite fracture criteria. The resultsindicate that the coarse interface retards the propagation of interface crack, and redounds to stabilityof gravity dam. It is found that the interface crack often propagates alone the interface between damand foundation, simultaneously the branch crack kinks to foundation at the specific condition
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.267.pdf
Permalink