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EFFECT OF RIGIDITY ON PORE WATER PRESSURE IN DAMS (Ec/Es)

Author: Saleem Mahmod Muarik Heba Dawood Salim
Journal: Journal Of Wassit For Science & Medicine مجلة واسط للعلوم والطب ISSN: 58161992 Year: 2013 Volume: 6 Issue: 1 Pages: 237-251
Publisher: Wassit University جامعة واسط

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Abstract

In this paper, to study the effect of relative core /shells rigidity, three cases have been considered. Core of less rigidity (Ec/Es <1.0), homogeneous rigidity (Ec/Es =1.0) and stiffer core (Ec/Es >1.0), the problem is analyzed numerically using the finite element computer program by using Biot consolidation of rectangle in plane strain (Four- node element).It was found that the factor of safety against tension cracking is increased as the depth of the core increases, and for Duncan and Sherard criteria, the factor of safety is about (1.2) for three planes that bounded the core, the values of Ec/Es is (0.7). However, the settlement, horizontal displacement and pore pressure are decreased as the ratio Ec/Es increased.

يدرس هذا البحث تاثير الجساءه والتي تمثل النسبة بين معاملات يونك بين لب السد نسبه الى الاكتاف وتأثيرها على ضغط الماء المسامي وقد وجدت ان نسبة الملائمة لضمان معامل امان كافي السداد هو Ec/ Ec = 0.7 .

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