MESO-SCALE SIMULATIONS OF PULL-OUT TESTS FOR RETARDED BONDED TENDONS

XIAO Qisheng; XIONG Xueyu

doi:10.13204/j.gyjzg21061507

Volume 51 Issue 10

Feb. 2022

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Chen Yunmin, Chen Renpeng, Huang Haidan. DEFINITION OF RELATIVE RIGIDITY AND PROPER RAFT THICKNESS OF PILE-RAFT FOUNDATION[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(5): 1-4,23. doi: 10.13204/j.gyjz200505001

Citation:

XIAO Qisheng, XIONG Xueyu. MESO-SCALE SIMULATIONS OF PULL-OUT TESTS FOR RETARDED BONDED TENDONS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 28-32,39. doi: 10.13204/j.gyjzg21061507

Citation:

XIAO Qisheng, XIONG Xueyu. MESO-SCALE SIMULATIONS OF PULL-OUT TESTS FOR RETARDED BONDED TENDONS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 28-32,39. doi: 10.13204/j.gyjzg21061507

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MESO-SCALE SIMULATIONS OF PULL-OUT TESTS FOR RETARDED BONDED TENDONS

doi: 10.13204/j.gyjzg21061507

XIAO Qisheng,
XIONG Xueyu^,

Institute of Prestressed Structures, Tongji University, Shanghai 200092, China

Received Date: 2021-06-15
Available Online: 2022-02-21

Abstract

Abstract

From the standpoint of the structures' mechanical properties, the biggest difference between the retarded-bonded prestressed system and the bonded/unbonded prestressed system stems from the difference in the bond relationship between tendons and concrete. Limited by the observation methods, the bond-slip relationship curves are mainly used to judge the bond behavior in pull-out tests. Compared with the test method, the numerical simulation method can quantitatively observe and extract the damage and fracture of the material during the bonding process. In this paper, the modified CZM model was used to simulate the bonding process between the retard-bonded prestressed tendons and concrete at meso-scale. The macro mechanical response and failure modes of simulation results could achieve good agreements with those of experimental results. Based on the extracted damage and crack propagation data during the bonding process, the nonlinear bonding behavior caused by the damage evolution and crack propagation was discussed.
- retarded-bonded prestressing,
- meso-scale simulation,
- bond action,
- crack propagation

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References(18)

References

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