Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Jacking penetration resistance and mechanical characteristics of bucket foundations in sand
https://orcid.org/0000-0001-9273-1254
Abstract Model tests have been performed to investigate the penetration and tip resistance and inner and outer earth pressure of bucket foundations embedded in sand with the jacking installation method. The soil plug, the soil-skirt interaction, and the penetration resistance of the bucket are determined by these tests. Based on the soil arch theory, analytical expressions of the inner soil pressure and the penetration resistance for the bucket are presented and verified by the test results. The results show that the soil plug begins to form when the penetration displacement reaches 1 times the width of the bucket, and the incremental filling ratios of each bucket are 0.65 to 0.7 and 0.8 at the end of penetration. The inner earth pressure of the bucket is in the form of a double broken line, which is same as the open-ended piles. The theoretical formula of the penetration force considering the soil arching effect can predict the penetration force well, and the ratio of the soil arch resistance to the total resistance during the penetration is up to 85%, which indicates that the soil arch resistance plays an important role in the total penetration resistance during the jacking installation process.
Jacking penetration resistance and mechanical characteristics of bucket foundations in sand
https://orcid.org/0000-0001-9273-1254
Abstract Model tests have been performed to investigate the penetration and tip resistance and inner and outer earth pressure of bucket foundations embedded in sand with the jacking installation method. The soil plug, the soil-skirt interaction, and the penetration resistance of the bucket are determined by these tests. Based on the soil arch theory, analytical expressions of the inner soil pressure and the penetration resistance for the bucket are presented and verified by the test results. The results show that the soil plug begins to form when the penetration displacement reaches 1 times the width of the bucket, and the incremental filling ratios of each bucket are 0.65 to 0.7 and 0.8 at the end of penetration. The inner earth pressure of the bucket is in the form of a double broken line, which is same as the open-ended piles. The theoretical formula of the penetration force considering the soil arching effect can predict the penetration force well, and the ratio of the soil arch resistance to the total resistance during the penetration is up to 85%, which indicates that the soil arch resistance plays an important role in the total penetration resistance during the jacking installation process.
Jacking penetration resistance and mechanical characteristics of bucket foundations in sand
https://orcid.org/0000-0001-9273-1254
Abstract Model tests have been performed to investigate the penetration and tip resistance and inner and outer earth pressure of bucket foundations embedded in sand with the jacking installation method. The soil plug, the soil-skirt interaction, and the penetration resistance of the bucket are determined by these tests. Based on the soil arch theory, analytical expressions of the inner soil pressure and the penetration resistance for the bucket are presented and verified by the test results. The results show that the soil plug begins to form when the penetration displacement reaches 1 times the width of the bucket, and the incremental filling ratios of each bucket are 0.65 to 0.7 and 0.8 at the end of penetration. The inner earth pressure of the bucket is in the form of a double broken line, which is same as the open-ended piles. The theoretical formula of the penetration force considering the soil arching effect can predict the penetration force well, and the ratio of the soil arch resistance to the total resistance during the penetration is up to 85%, which indicates that the soil arch resistance plays an important role in the total penetration resistance during the jacking installation process.
Jacking penetration resistance and mechanical characteristics of bucket foundations in sand
Zhu, Xiao-jun (Autor:in) / Li, Wen-shuai (Autor:in) / Fei, Kang (Autor:in)
2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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