Design and Testing of Cone and Hypar Footings

Nicholls, Robert; Izadi, Mohammad V.

doi:10.1061/jsfeaq.0001096

Cited by 5 publications

(2 citation statements)

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“…The inverted folded footing are having the same length (L) = 250mm, width (B) = 250mm, total depth (D) = 92 mm, edge depth (d) = 40 mm, along with different angles (θ) of 40, 35, 31 o respectively. The load-settlement curve for this group is shown in Figure (7). The figure shows that increasing the applied pressure resulted in an approximate linear increase in the measured settlements.…”

Section: Results Of Groupmentioning

confidence: 94%

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Experimental Study for the Optimization of Foundation Shapes on Soft Soil

Elsakhawy

Salem

Al-tuhamy

et al. 2016

The Egyptian International Journal of Engineering Sciences and

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Geotechnical engineers are faced with challenges in selecting safe and economic solutions for the foundations of light structures resting on deep layers of soft clay. Changing the bottom of foundation shape into shell-shaped footings is a solution to avoid using deep foundations or other costly soil improvement schemes. This paper introduces different foundation bottom shapes that resemble the footing stress distribution over the underlying soft soils in an effort to minimize its effect. Elliptical, trapezoidal and inverted folded footings have been used as an alternative to the conventional flat shallow footings. The purpose of the current study is to present the optimal shape of the foundations, which achieves soil stress reduction, settlements, and consequently lower footing thickness and reinforcements.

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Section: Results Of Groupmentioning

confidence: 94%

“…The shell models were compared to circular and square flat models. Results indicated that the settlement of the shell was significantly reduced when compared with flat footing models [7].…”

Section: Introductionmentioning

confidence: 97%

Experimental Study for the Optimization of Foundation Shapes on Soft Soil

Elsakhawy

Salem

Al-tuhamy

et al. 2016

The Egyptian International Journal of Engineering Sciences and

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Hypar Shell on Pasternak Foundation

1992

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Experimental investigation of shell foundations on dry sand

Hanna¹,

Abdel-Rahman²

1998

Can. Geotech. J.

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Shells are usually used as structural elements in buildings. In Germany they showed remarkable resistance to the effects of bombing during World War II. About 1 decade later, the possibility of employing shells in foundation engineering was explored. Surveys of the literature indicate that shell foundations have been employed effectively in different parts of the world and were proven to provide an overall economical alternative to the conventional flat foundations. However, the geotechnical design of these footings remained the same as for their respective flat ones. Accordingly, the advantages of shell geometry in foundation engineering has not yet been explored in the design of these footings. The objective of the present study is to examine the overall geotechnical behavior of three types of shell foundations resting on sand under axial loading conditions, namely, triangular, conical, and pyramidal shells. Furthermore, the resulting bearing capacities and settlements will be compared with conventional strip, circular, and square flat foundations. The present paper presents an experimental study on nine foundation models tested on loose, medium, and dense sand states. The influence of shell configuration and embedment depth on the ultimate bearing capacity and settlement will be presented. The results of the present experimental investigation have shown the admirable performance of shell foundations with respect to ultimate bearing capacity and settlement characteristics. Shell foundations provide higher resistance to lateral loading as compared with flat ones, and thus they will perform better in earthquake regions.Key words: shell foundation, experimental investigation, bearing capacity, settlement, sand, geotechnical engineering.

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Design and Testing of Cone and Hypar Footings

Cited by 5 publications

References 0 publications

Experimental Study for the Optimization of Foundation Shapes on Soft Soil

Experimental Study for the Optimization of Foundation Shapes on Soft Soil

Hypar Shell on Pasternak Foundation

Experimental investigation of shell foundations on dry sand

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