Axial compression performance of square UHPC-filled stainless-steel tubular columns

Zhao, Zhuang; Wei, Yang; Wang, Gaofei; Zhang, Yirui; Lin, Yu

doi:10.1016/j.conbuildmat.2023.133622

Cited by 12 publications

(2 citation statements)

References 32 publications

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“…Civil engineering structures are affected by different environmental factors, and the study of the safety performance of structures under external actions is very important [1][2][3][4][5][6]. Bridge fires are rare but serious accidents.…”

Section: Introductionmentioning

confidence: 99%

“…The innovative points and implementation methods of this article are as follows: (1) we evaluate the fire safety performance of prestressed concrete beam bridges from a probabilistic perspective, considering the impact of parameter randomness on structural safety. (2) We adopt a uniform design method for the sample collection of fire resistance performance indicators, greatly reducing the time cost in the probability analysis process and ensuring accuracy. (3) We determine that using the goodness-of-fit test method can analyze the most statistical characteristics of structural fire resistance to ensure the accuracy of probability analysis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reliability Assessment Approach for Fire Resistance Performance of Prestressed Steel–Concrete Box Girder Bridges

Duan,

Miao,

et al. 2023

Fire

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This paper employs probability methods to evaluate the fire safety performance of prestressed steel–concrete beam bridges based on simulation experimental research. Firstly, fire simulation experimental sample analysis was conducted on actual small box girder bridges to assess the structural response of prestressed steel–concrete structures to fire, as is in line with engineering practice. Next, we constructed a reliability analysis model to investigate the fire resistance performance of prestressed steel–concrete beam bridges. Combining reliability theory with the finite element method, we established a reliability analysis method for the fire resistance performance of prestressed steel–concrete beam bridges. Subsequently, we proposed a safety factor evaluation model for the fire resistance performance of prestressed steel–concrete beam bridges and then established a safety factor evaluation method for the fire resistance performance of prestressed steel–concrete beam bridges based on reliability back analysis. Finally, based on the analysis of the post-fire structural response in the specific case of a steel–concrete continuous beam bridge project moving from conditions of being simply supported to continuously prestressed, a structural resistance sample of the prestressed steel–concrete beam bridge was generated via the uniform design method, and statistical analysis was conducted. Subsequently, probability methods were used to evaluate the safety of the prestressed steel–concrete beam bridge after a fire. Through analysis, we concluded that the duration of the fire had a significant impact on the structural performance of prestressed steel–concrete beam bridges and that the randomness of parameters had a significant impact on the safety reserve of prestressed steel–concrete beam bridges following the fire. Going forward, it is necessary to pay attention to this factor in specific engineering practices and strengthen the monitoring and statistical analysis of structural random characteristics.

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