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Volume 51 Issue 10
Feb.  2022
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Article Navigation >  INDUSTRIAL CONSTRUCTION  > 2021  >  51(10): 28-32,39
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
shu

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

doi: 10.13204/j.gyjzg21061507

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

  • Received Date: 2021-06-15
    Available Online: 2022-02-21
    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.
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    • References(18)
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