A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Incorporating Site Variability into LRFD Design of Pile Foundation
This paper focused on evaluating the effect of variations in geotechnical properties on the design of deep foundations. The coefficients of variation of undrained shear strength and friction angle (COVSu, COVϕ) and the effect of sampling location on the deep foundation resistance factor were investigated. For the cohesive soil condition, analysis was done in the Red River site in Louisiana, where the weighted average undrained shear strength (Su) and the COVSu range from 54.89 kPa to 105.39 kPa, and from 7% to 48%, respectively. For the cohesionless soil condition, analysis was done for the weighted average friction angle (ϕ) of 30°, and for the COVϕ range from 0% to 50%. For the mixed soil layers, analysis was performed in Metairie site, where the Su, ϕ, COVSu, and COVϕ are 23 kPa, 39°, 27%, and 35%, respectively. The results showed that the resistance factor of deep foundation, ϕdf, decreases with increasing the COVSu and the COVϕ, and with increasing the distance of borehole from the pile foundation. In the site with multiple boreholes, the effect of sampling location on the resistance factor of deep foundations was investigated, and the resistance factor was calculated using the inverse distance weight (IDW) method.
Incorporating Site Variability into LRFD Design of Pile Foundation
This paper focused on evaluating the effect of variations in geotechnical properties on the design of deep foundations. The coefficients of variation of undrained shear strength and friction angle (COVSu, COVϕ) and the effect of sampling location on the deep foundation resistance factor were investigated. For the cohesive soil condition, analysis was done in the Red River site in Louisiana, where the weighted average undrained shear strength (Su) and the COVSu range from 54.89 kPa to 105.39 kPa, and from 7% to 48%, respectively. For the cohesionless soil condition, analysis was done for the weighted average friction angle (ϕ) of 30°, and for the COVϕ range from 0% to 50%. For the mixed soil layers, analysis was performed in Metairie site, where the Su, ϕ, COVSu, and COVϕ are 23 kPa, 39°, 27%, and 35%, respectively. The results showed that the resistance factor of deep foundation, ϕdf, decreases with increasing the COVSu and the COVϕ, and with increasing the distance of borehole from the pile foundation. In the site with multiple boreholes, the effect of sampling location on the resistance factor of deep foundations was investigated, and the resistance factor was calculated using the inverse distance weight (IDW) method.
Incorporating Site Variability into LRFD Design of Pile Foundation
Abu-Farsakh, Murad Y. (author) / Rahman, Md. Habibur (author)
Geo-Congress 2023 ; 2023 ; Los Angeles, California
Geo-Congress 2023 ; 212-219
2023-03-23
Conference paper
Electronic Resource
English
Incorporating Site Variability into LRFD Design of Pile Foundation
| British Library Conference Proceedings | 2023
| British Library Conference Proceedings | 1997
LRFD design codes for pile foundations - A review
| British Library Conference Proceedings | 2000