Seismic bearing capacity of strip footings on rock masses using the Hoek-Brown failure criterion

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• 作者：Amin Keshavarz ; ^{keshavarz@pgu.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; ^{amin_keshavarz@yahoo.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Abdoreza Fazeli ; Siavosh Sadeghi
• 关键词：Rock mass ; Bearing capacity ; Strip footings ; Stress characteristics ; Hoek&ndash ; Brown failure criterion
• 刊名：Journal of Rock Mechanics and Geotechnical Engineering
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：8
• 期：2
• 页码：170-177
• 全文大小：588 K

文摘

In this paper, the bearing capacity of strip footings on rock masses has been studied in the seismic case. The stress characteristics or slip line method was used for analysis. The problem was analyzed in the plane strain condition using the Hoek–Brown failure criterion. First, the equilibrium equations along the stress characteristics were obtained and the rock failure criterion was applied. Then, the equations were solved using the finite difference method. A computer code has been provided for analysis. Given the footing and rock parameters, the code can calculate the stress characteristics network and obtain the stress distribution under the footing. The seismic effects have been applied as the horizontal and vertical pseudo-static coefficients. The results of this paper are very close to those of the other studies. The seismic bearing capacity of weightless rock masses can be obtained using the proposed equations and graphs without calculating the whole stress characteristics network.