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Aug 12, 2020
Performance Study of RC Hollow Core Slab with Cracks Based on Extended Finite Element Method (XFEM)
Authors: Zhao-Hua Yuan [email protected], Chao Ma [email protected], Shu-Yu Yang [email protected], and Pei-Zhi Wang [email protected]Author Affiliations
Publication: CICTP 2020
ABSTRACT
Reinforced concrete (RC) hollow-core slab beams work with cracks in service, but no accurate mechanical properties calculation method exists for them. Extended Finite Element Method (XFEM) has advantages in the study of cracking, such as less calculation and no need to formulate crack propagation path. In this paper, XFEM of RC hollow core slab is built on ABAQUS, in which the material constitutive model and modeling method are based on relevant scholars’ achievements. We simulate initial damage of concrete by prefabricating cracks of different numbers and depths. Equivalent vehicle load is loaded at the most disadvantageous position. Effects of number, depth, and location of cracks on width, growth path, mid-span deflection, and relative depth (crack depth/beam depth) of RC hollow-core slabs are studied. Results show initial crack amount has little effect on bearing capacity, but RC hollow-core slab stiffness decreases with increase of crack amount. Judging whether RC hollow-core slabs have been subjected to steel yield load by relative depth is given through correlation calculation.
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© 2020 American Society of Civil Engineers.
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Published online: Aug 12, 2020
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1Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communications, Civil Engineering, Chang’an Univ., Nanerhuan Rd., Xi’an 710064, China. Email: [email protected]
2Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communications, Civil Engineering, Chang’an Univ., Nanerhuan Rd., Xi’an 710064, China. Email: [email protected]
3Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communications, Civil Engineering, Chang’an Univ., Nanerhuan Rd., Xi’an 710064, China. Email: [email protected]
4Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communications, Civil Engineering, Chang’an Univ., Nanerhuan Rd., Xi’an 710064, China. Email: [email protected]
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