Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Seismic Pullout Capacity of Strip Plate Anchors Embedded in Sandy Slopes
https://orcid.org/http://orcid.org/0000-0002-3406-4139
https://orcid.org/http://orcid.org/0000-0002-6706-3626
For strengthening the foundations subjected to uplift loads mostly in the case of transmission towers, bridges and buried pipelines, etc., plate anchors are often used and their design must ensure considerable safely against the resistance of supporting soil mass to uplift failure. In the present study, the pullout capacity of horizontal strip anchors embedded in sandy soil with sloping surface has been obtained under seismic conditions. The computations have been carried out by using lower bound limit analysis with finite elements in conjunction with linear programming. The uplift capacity is expressed in terms of a dimensionless seismic uplift factor due to the contribution of soil self-weight with the inclusion of pseudo-static seismic body forces. The analysis has been performed for different values of (i) slope angle varying from 15º to 35º, (ii) embedment ratio of the anchor plate varying from 1 to 7, (iii) angle of internal friction of soil ranging from 20º to 40º, and (iv) horizontal seismic acceleration coefficient (Kh) ranging from 0 to 0.3. With pullout load normal to the anchor plate, the solutions have been obtained for three different orientations of the anchor plate, i.e., horizontal, parallel to the sloping face and vertical. It is observed that for the given magnitudes of embedment ratio and angle of internal friction of soil mass, the pullout capacity reduces with an increase in the angle of slope, inclination of anchor plate and seismic acceleration coefficient. With the increase in the roughness of anchor plate, the pullout capacity is found to be increasing significantly.
Seismic Pullout Capacity of Strip Plate Anchors Embedded in Sandy Slopes
https://orcid.org/http://orcid.org/0000-0002-3406-4139
https://orcid.org/http://orcid.org/0000-0002-6706-3626
For strengthening the foundations subjected to uplift loads mostly in the case of transmission towers, bridges and buried pipelines, etc., plate anchors are often used and their design must ensure considerable safely against the resistance of supporting soil mass to uplift failure. In the present study, the pullout capacity of horizontal strip anchors embedded in sandy soil with sloping surface has been obtained under seismic conditions. The computations have been carried out by using lower bound limit analysis with finite elements in conjunction with linear programming. The uplift capacity is expressed in terms of a dimensionless seismic uplift factor due to the contribution of soil self-weight with the inclusion of pseudo-static seismic body forces. The analysis has been performed for different values of (i) slope angle varying from 15º to 35º, (ii) embedment ratio of the anchor plate varying from 1 to 7, (iii) angle of internal friction of soil ranging from 20º to 40º, and (iv) horizontal seismic acceleration coefficient (Kh) ranging from 0 to 0.3. With pullout load normal to the anchor plate, the solutions have been obtained for three different orientations of the anchor plate, i.e., horizontal, parallel to the sloping face and vertical. It is observed that for the given magnitudes of embedment ratio and angle of internal friction of soil mass, the pullout capacity reduces with an increase in the angle of slope, inclination of anchor plate and seismic acceleration coefficient. With the increase in the roughness of anchor plate, the pullout capacity is found to be increasing significantly.
Seismic Pullout Capacity of Strip Plate Anchors Embedded in Sandy Slopes
https://orcid.org/http://orcid.org/0000-0002-3406-4139
https://orcid.org/http://orcid.org/0000-0002-6706-3626
For strengthening the foundations subjected to uplift loads mostly in the case of transmission towers, bridges and buried pipelines, etc., plate anchors are often used and their design must ensure considerable safely against the resistance of supporting soil mass to uplift failure. In the present study, the pullout capacity of horizontal strip anchors embedded in sandy soil with sloping surface has been obtained under seismic conditions. The computations have been carried out by using lower bound limit analysis with finite elements in conjunction with linear programming. The uplift capacity is expressed in terms of a dimensionless seismic uplift factor due to the contribution of soil self-weight with the inclusion of pseudo-static seismic body forces. The analysis has been performed for different values of (i) slope angle varying from 15º to 35º, (ii) embedment ratio of the anchor plate varying from 1 to 7, (iii) angle of internal friction of soil ranging from 20º to 40º, and (iv) horizontal seismic acceleration coefficient (Kh) ranging from 0 to 0.3. With pullout load normal to the anchor plate, the solutions have been obtained for three different orientations of the anchor plate, i.e., horizontal, parallel to the sloping face and vertical. It is observed that for the given magnitudes of embedment ratio and angle of internal friction of soil mass, the pullout capacity reduces with an increase in the angle of slope, inclination of anchor plate and seismic acceleration coefficient. With the increase in the roughness of anchor plate, the pullout capacity is found to be increasing significantly.
Seismic Pullout Capacity of Strip Plate Anchors Embedded in Sandy Slopes
Lecture Notes in Civil Engineering
Sitharam, T. G. (Herausgeber:in) / Kolathayar, Sreevalsa (Herausgeber:in) / Jakka, Ravi (Herausgeber:in) / Khuntia, S. (Autor:in) / Sahoo, J. P. (Autor:in)
04.01.2022
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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