Coupled systems mechanics

  • 제13권4호
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  • Pages.311-335
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  • 2024
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  • 2234-2184(pISSN)
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  • 2234-2192(eISSN)
테크노프레스 (Techno-Press)
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Minimum cost design for circular isolated footings with eccentric column taking into account that the surface in contact with the ground works partially in compression

  • 투고 : 2024.05.18
  • 심사 : 2024.07.01
  • 발행 : 2024.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

This work aims to show a model to estimate the minimum cost (Thickness and area of steel in X and Y directions) for design a circular isolated footing with eccentric column that considers that the surface in contact with the ground works partially under compression. The formulation is shown by integration to find the moments, the bending shears and the punching shear using the pressure volume under the footing. Some researchers show the minimum cost design for circular isolated footings for an eccentric column assuming that the contact area works completely in compression, others consider the contact surface with the ground working partially in compression for a column in the center of the base. Three numerical examples are developed to obtain the complete design, which are: Example 1 for a column in the center of the base,Example 2 for a column at a distance of 1.50 m from the center of the base in the X direction, Example 3 for a column at a distance of 1.50 m from the center of the base in both directions. Also, a comparison of the new model against the model proposed by other authors is presented. The comparison shows that the new model generates a great saving of up to 43.74% for minimum area and 48.44% for minimum cost design in a column located in the center of the base, and when the column is located at a distance of radius/2 starting from the center of the base in the X direction generates great savings of up to 45.24% for minimum area and 31.80% for minimum cost design. Therefore, it is advisable to use the model presented in this study.

키워드

과제정보

The research described in this paper was financially supported by the Universidad Autonoma de Coahuila and Universidad Juarez del Estado de Durango, Mexico.

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