Experimental study on biaxial dynamical compressive test and PFC2D numerical simulation of artificial rock sample with single joint

• Autorzy: Liangxiao Xiong , Chen Haijun , Gao Xinghong , Xu Zhongyuan , Hu Deye

Identyfikatory

DOI

10.24425/ace.2023.144169

• Języki publikacji: EN

Abstrakty

EN

Dynamic biaxial compression tests and Particle Flow Code numerical simulations of the cement mortar specimens with a single joint were carried out to study the mechanical properties and crack evolution of artificial rock samples with a single joint. The effects of lateral stress σ2, loading rate V, the dip angle β (between the vertical loading direction and the joint) on the biaxial compressive strength σb, and the evolution law of crack were investigated. Test results showed that; (1) when both the dip angle β and the loading rate V remained unchanged, the biaxial compressive strength σb increased with the increase in the lateral stress σ2, while σ2 had no obvious effect on the crack evolution law; (2) when both the dip angle β and the lateral stress σ2 were kept unchanged, the loading rate V had an insignificant effect on the biaxial compressive strength σb and the crack evolution law; (3) when both the lateral stress σ2 and the loading rate V were constant, the biaxial compressive strength σb decreased first and then increased with the increase in the dip angle β; however, the dip angle β did not significantly affect the crack evolution law. The conclusions obtained in this paper are presented for the first time.

Słowa kluczowe

EN

artificial rock; biaxial compression; dynamic compression; compressive strength; crack evolution

PL

skała sztuczna; kompresja dynamiczna; kompresja dwuosiowa; wytrzymałość na ściskanie; ewolucja pęknięć

• 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: 213--229
• Opis fizyczny: Bibliogr. 16 poz., il., tab.

Twórcy

autor

Liangxiao Xiong

• School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China

• https://orcid.org/0000-0002-6366-5187

autor

Chen Haijun

• Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing, China

• https://orcid.org/0000-0003-0094-9649

autor

Gao Xinghong

• China Construction Third Bureau First Engineering Co., Ltd., Wuhan, China

• https://orcid.org/0000-0002-9906-1086

autor

Xu Zhongyuan

• Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China

• https://orcid.org/0000-0003-4303-1870

autor

Hu Deye

• School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China

• https://orcid.org/0000-0001-8132-0812

Bibliografia

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