Bearing capacity and seismic performance of Y-shaped reinforced concrete bridge piers in a freeze-thaw environment

• Autorzy: Li Yanfeng , Li Jialong , Guo Tianyu , Zhao Tongfeng , Bao Longsheng , Sun Xinglong

Identyfikatory

DOI

10.24425/ace.2023.144178

• Języki publikacji: EN

Abstrakty

EN

A quantitative study is performed to determine the performance degradation of Y-shaped reinforced concrete bridge piers owing to long-term freeze-thaw damage. The piers are discretized into spatial solid elements using the ANSYS Workbench finite element analysis software, and a spatial model is established. The analysis addresses the mechanical performance of the piers under monotonic loading, and their seismic performance under low-cycle repeated loading. The influence of the number of freeze-thaw cycles, axial compression ratio, and loading direction on the pier bearing capacity index and seismic performance index is investigated. The results show that freeze-thaw damage has an adverse effect on the ultimate bearing capacity and seismic performance of Y-shaped bridge piers in the transverse and longitudinal directions. The pier peak load and displacement ductility coefficient decrease with increasing number of freeze-thaw cycles. The axial compression ratio is an important factor that affects the pier ultimate bearing capacity and seismic performance. Upon increasing the axial compression ratio, the pier peak load increases and the displacement ductility coefficient decreases, the effects of which are more significant in the longitudinal direction.

Słowa kluczowe

EN

freeze-thaw cycle; Y-shape; bridge pier; finite element analysis; bearing capacity; seismic resistance

PL

cykl zamrażanie-odmrażanie; kształt Y; przyczółek mostowy; analiza elementów skończonych; nośność; odporność sejsmiczna

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2023
• Tom: Vol. 69, nr 1
• Strony: 367--384
• Opis fizyczny: Bibliogr. 28 poz., il., tab.

Twórcy

autor

Li Yanfeng

• School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0003-2153-7934

autor

Li Jialong

• School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0001-9343-1501

autor

Guo Tianyu

• School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0003-4945-5770

autor

Zhao Tongfeng

• Liaoning Provincial College of Communications, Liaoning Bridge Safety Engineering Research Center, Shenyang, China

• https://orcid.org/0000-0001-6504-781X

autor

Bao Longsheng

• School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0001-5582-1103

autor

Sun Xinglong

• School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, China

• https://orcid.org/0000-0002-9965-2505

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