Method of settlement calculation for underlying layer of soft soil composite foundation based on load transfer mechanism

• Autorzy: Xiao Yaoting , Wang Jing

Identyfikatory

DOI

10.24425/ace.2024.148927

• Języki publikacji: EN

Abstrakty

EN

The mechanical properties of soil in soft soil area are poor, and the settlement of the underlying layer in the composite foundation accounts for a large proportion of the total settlement. At present, most of the research focuses on the settlement of the reinforced area, and the research on the settlement of the underlying layer is of great significance for the settlement of soft soil composite foundation. The differences in load transfer modes of soil and pile are analyzed, and based on the Boussinesq solution and Mindlin solution, a calculation method for the stress and settlement of the underlying layer in flexible and rigid pile composite foundation is proposed. The relative displacement of soil and pile in flexible pile composite foundation is small, and the negative friction can be ignored, but the influence of effective pile length should be considered. The relative displacement of soil and pile in rigid pile composite foundation is large, so the negative friction should be considered. Part of soil top stress is transmitted to the pile via negative friction, and then the pile axial force is transmitted back to the soil via positive friction. In addition to effective pile length, the change of stress transfer path caused by negative friction should also be considered in settlement calculation.

Słowa kluczowe

EN

composite foundation; load transfer; negative friction; soft soil

PL

fundament kompozytowy; przeniesienie obciążenia; tarcie ujemne; gleba miękka; gleba lekka

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2024
• Tom: Vol. 70, nr 1
• Strony: 543--555
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Xiao Yaoting

• Hubei University of Arts and Science, College of Civil Engineering and Architecture, No. 296, Longzhong Road, Xiangyang, Hubei, China

• https://orcid.org/0000-0002-9537-8692

autor

Wang Jing

• Hubei University of Arts and Science, College of Civil Engineering and Architecture, No. 296, Longzhong Road, Xiangyang, Hubei, China

• https://orcid.org/0000-0001-7655-8850

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).