Rapid evaluation method of subgrade performance using Portable Falling Weight Deflectometer

• Autorzy: Bu Bo , Shang Huayu , Liu Shaoping , Liu Ke

Identyfikatory

DOI

10.24425/ace.2023.147680

• Języki publikacji: EN

Abstrakty

EN

The performance evaluation of new and old subgrades is critical for the quality and safety of reconstruction and extension projects. It is necessary to achieve rapid and easy performance testing. In this study, a Portable Falling Weight Deflectometer (PFWD) is chosen to rapid evaluate the performance of subgrade. First, a testing area, the reconstruction and expansion project of the Hefei to Dagudian section of the Shanghai-Shaanxi Expressway, is selected. Then, the PFWD modulus Ep of resilient tested by PFWD and the corresponding water content w and compacting degree K tested by the cutting ring method for old subgrade are obtained. And the correlation relationship between Ep and w and K is established. The performance of old subgrade can be rapid obtained by PFWD. Meanwhile, for the new subgrade, the correlation relationship between Ep and bending value L, w and K is established, and the performance can also be rapid tested by PFWD. Finally, a rapid evaluation method for the reconstruction and expansion of subgrade performance was proposed, which aims to provide technical support for ensuring construction quality and safety and provides a technical reference and a theoretical basis for the prediction of similar subgrade performance.

Słowa kluczowe

EN

portable falling weight deflectometer; subgrade performance; rapid test; reconstruction project; extension project

PL

deflektometr opadający przenośny; właściwości podłoża; szybki test; projekt odbudowy; projekt rozbudowy

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2023
• Tom: Vol. 69, nr 4
• Strony: 619--633
• Opis fizyczny: Bibliogr. 29 poz., il., tab.

Twórcy

autor

Bu Bo

• Anhui Transportation Holding Group Co. Ltd., Hefei, China

• https://orcid.org/0009-0006-9931-5759

autor

Shang Huayu

• National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha, China

• https://orcid.org/0009-0009-3635-7486

autor

Liu Shaoping

• National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha, China

• https://orcid.org/0009-0005-8448-8959

autor

Liu Ke

• National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha, China

• https://orcid.org/0009-0004-3661-7894

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).