Volume 3, Issue 1 (انگلیسی از صفحه 615 تا 632 2009)
2009, 3(1): 523-542 |
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Effects of Soil Improvement Using Cement Grouting on Seismic Bearing Capacity of Shallow Foundations under Vertical Ground Motions. Journal of Engineering Geology 2009; 3 (1) :523-542
URL: http://jeg.khu.ac.ir/article-1-329-en.html
URL: http://jeg.khu.ac.ir/article-1-329-en.html
Abstract: (5858 Views)
(Paper pages 523-542) This paper presents a rigid circular footing model with specified properties and dimensions on a sandy-clay soil with Mohr-Coulomb material. This model is analyzed dynamically with finite difference 2D FLAC software under vertical component of ground excitations. Then the soil is improved with cement grouting and analyzed again. Consequently, the load-settlement curves under a circular footing, due to vertical component of ground accelerations through the underlying soil, are plotted. Also the dynamic bearing capacity of natural and soil cemented foundation is presented and discussed. The analysis results show that adding 2, 4 and 6 percent of cement, with certain conditions, cause 2.7, 4.2 and 7.0 times increase in dynamic bearing capacity, respectively, in comparison to normal soil.
Keywords: Dynamic vertical settlement, Dynamic bearing capacity, Shallow footing, Grouting, soil improvement, FLAC-2D
Accepted: 2016/10/5 | Published: 2016/10/5
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