Evaluation of using hardening soil model for predicting wall deflections cause by deep excavation: A case study at the Ho Chi Minh metro line 1, Vietnam

• Autorzy: Bui Luc Manh , Wu Li , Cheng Yao , Dong Dao Jun

Identyfikatory

DOI

10.24425/ace.2024.148916

• Języki publikacji: EN

Abstrakty

EN

The goal of this study is to assess the application of the Hardening soil model in predicting the deformation of retaining walls of excavations in 2D and 3D finite element analysis at the Ho Chi Minh Metro project. Designed as the deepest underground station in the first metro line built in Ho Chi Minh City (HCMC), Opera House station is located in an area with a dense building zone and close to historical buildings. A summary of the input soil properties is provided using data from site investigations, in-situ tests, and laboratory tests. By numerical simulation using the Hardening soil model, the parameters of the soil stiffness modulus value are verified based on the Standard Penetration Test (SPT), and Pressuremeter test (PMT). The obtained results of the numerical analysis by 2D and 3D finite element methods, and field observations indicate that applying the Hardening soil model with soil stiffness modulus obtained in situ tests gives reasonable results on the displacement of the retaining wall at the final phase. The relationship between the SPT value and the stiffness modulus of HCMC sand is a function of depth. This correlation is obtained through the comparison of wall deformation between the simulation and monitoring at the construction site. The results of the difference between 2D and 3D finite element analysis also are discussed in this study.

Słowa kluczowe

EN

deep excavation; Ho Chi Minh MRT; hardening soil model; opera house station; wall deflections

PL

stacja metra Ho Chi Minh; model utwardzania gruntu; stacja opery; ugięcia ścian; wykop głęboki

• 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: 357--373
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Bui Luc Manh

• Faculty of Engineering, China University of Geosciences (Wuhan), No. 388 Lumo Road, Wuhan 430074, Hubei, China

• https://orcid.org/0009-0006-7816-8796

autor

Wu Li

• Faculty of Engineering, China University of Geosciences (Wuhan), No. 388 Lumo Road, Wuhan 430074, Hubei, China

• https://orcid.org/0000-0001-9651-3772

autor

Cheng Yao

• Faculty of Engineering, China University of Geosciences (Wuhan), No. 388 Lumo Road, Wuhan 430074, Hubei, China

• https://orcid.org/0000-0003-2925-2773

autor

Dong Dao Jun

• Faculty of Engineering, China University of Geosciences (Wuhan), No. 388 Lumo Road, Wuhan 430074, Hubei, China

• https://orcid.org/0009-0005-9055-5564

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).