TY  - JOUR
AB  - Purpose In the freeze-thaw zone, the pre-stressed concrete of bridge structure will be damaged by freezing-thawing, the bearing capacity of structure will decrease and the safety will be affected. The purpose of this paper is to establish the time-dependent resistance degradation model of structure in the freeze-thaw zone, and analysis the structural reliability and remaining service life in different freeze-thaw zones.Design/methodology/approach First, according to the theory of structural design, a calculation model of the resistance of pre-stressed concrete structures in f freeze-thaw zone is established. Second, the time-dependent resistance model was verified by the test beam bending failure test results done by the research group, which has been in service for 20 years in freeze-thaw zone. Third, using JC algorithm in MATLAB to calculate the index on the reliability of pre-stressed concrete structure in frozen thawed zones, forecasting the s remaining service life of structure.Findings First, the calculation model of the resistance of pre-stressed concrete structures in freeze-thaw zone is accurate and it has excellent applicability. Second, the structural resistance deterioration time in Wet-Warm-Frozen Zone is the earliest. Third, once the pre-stressed reinforcement rusts, the structural reliability index will reach limit value quickly. Finally, the remaining service life of structure meets the designed expectation value only in a few of freeze-thaw zones in China.Originality/value The research will provide a reference for the design on the durability of a pre-stressed concrete structure in the freeze-thaw zone. In order to verify the security of pre-stressed concrete structures in the freeze-thaw zone, engineers can use the model presented in this paper for durability checking, it has an important significance.
VL  - 9
IS  - 4
SN  - 1757-9864
DO  - 10.1108/IJSI-07-2017-0044
UR  - https://doi.org/10.1108/IJSI-07-2017-0044
AU  - Liu Jinliang
AU  - Jia Yanmin
AU  - Zhang Guanhua
AU  - Wang Jiawei
PY  - 2018
Y1  - 2018/01/01
TI  - Research on resistance degradation and reliability of pre-stressed concrete structures in freeze-thaw zone
T2  - International Journal of Structural Integrity
PB  - Emerald Publishing Limited
SP  - 442
EP  - 454
Y2  - 2021/02/25
ER  -