Study on the subgrade service depth of moving vehicles under multi-wheeled superposition effect

• Autorzy: Zhou Yanmin , Wang Haiyang , Kong Lingyun , Liu Jialiang , Wang Jie , Wang Zhimei

Identyfikatory

DOI

10.24425/ace.2022.140654

• Języki publikacji: EN

Abstrakty

EN

The stress superposition effect in the midline area of the multi-wheeled vehicles produced by moving vehicles load is generally ignored, which leads to smaller results in research of subgrade service depth. Based on the elastic mechanics theory, the analytical solution of subgrade dynamic response under moving vehicles load is derived with compound elastic layers. The characteristics of subgrade dynamic stress distribution under the action of moving vehicles are analyzed by using Midas Gts Nx numerical simulation software, and the influence of static and dynamic axle load on the subgrade service depth is compared. The results demonstrate that the subgrade dynamic stress in the under-wheel area attenuates rapidly along the depth direction, while the subgrade dynamic stress in the midline area increases at first and subsequently decreases along the same direction. With the increase of subgrade dynamic stress, the shape of dynamic stress isosurface changes from bimodal to unimodal. Whether in the form of static or dynamic axle load, the subgrade service depth in the middle line area is larger than that in under-wheel area, and the influence of dynamic axle load on the subgrade service depth is greater than that of static axle load. The wheel distance and vehicle velocity have a significant influence on the subgrade service depth. With the increase of vehicle velocity, the subgrade service depth decreases. With the increase of wheel distance, the subgrade service depth decreases.

Słowa kluczowe

EN

road engineering; moving vehicle; superposition; numerical simulation; subgrade; service depth

PL

inżynieria drogowa; pojazd w ruchu; superpozycja; symulacja numeryczna; podłoże; głębokość serwisowa

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2022
• Tom: Vol. 68, nr 2
• Strony: 483--499
• Opis fizyczny: Bibliogr. 19 poz., il., tab.

Twórcy

autor

Zhou Yanmin

• School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

• https://orcid.org/0000-0002-1213-7165

autor

Wang Haiyang

• School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

• https://orcid.org/0000-0002-7152-5969

autor

Kong Lingyun

• School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

• https://orcid.org/0000-0003-3886-8254

autor

Liu Jialiang

• School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

• https://orcid.org/0000-0002-4463-2312

autor

Wang Jie

• School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

• https://orcid.org/0000-0003-3270-4216

autor

Wang Zhimei

• School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

• https://orcid.org/0000-0001-6859-3795

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).