| 논문명 |
Experimental and Numerical Investigations on Crack Intersection and Propagation of Concrete Structures |
| 저자명 |
(Siyao Wang) ; (Mei-Ling Zhuang) ; (Xiang Xue) |
| 수록사항 |
IJCSM, Vol.17 No.2 (2023-03) |
| 주제어 |
; Crack propagation; Crack intersection; Digital image correlation technology; Different approaching angles; Longitudinal crack |
| 요약2 |
This study presents experimental and numerical methods to reveal concrete structures’ crack propagation and intersection laws under static and dynamic loads. Firstly, a numerical simulation method was established using the user-defined material subroutines to solve the free crack surface contact problem of concrete structures. Secondly, three-point bending tests of concrete beams containing double cracks of different approaching angles were carried out based on the digital image correlation (DIC) technology to study the intersection and propagation of cracks. Finally, the fracture processes of double-crack concrete beams and concrete gravity dams with and without a longitudinal crack were simulated and analyzed under static and dynamic loads. The numerical results were compared with the test results to verify the effectiveness and accuracy of the proposed method in simulating crack intersection and propagation in concrete structures. Results indicate that the crack intersection affects the fracture path of concrete structures, weakens their bearing capacity, and accelerates the failure of the structures. The proposed simulation method provides an effective technical approach for crack propagation prediction and safety evaluation of engineering structures. |
