[1] [1] JIN L, ZHANG R B, DU X L, et al. Research progress on the influence of temperature on the mechanical performance of concrete structures［J］. China Civil Engineering Journal, 2021, 54(3): 1-18 (in Chinese).

[2] [2] JIANG C X. Analysis of tensile and compressive mechanical properties of concrete at high temperature［J］. Modern Salt and Chemical Industry, 2020, 47(4): 51-52 (in Chinese).

[3] [3] MIAO S L, LI Q T, ZHAO Y Y, et al. Experimental study on mechanical properties of nano-SiO2 concrete after high temperature［J］. Journal of Basic Science and Engineering, 2021, 29(4): 999-1006 (in Chinese).

[4] [4] SHEN H Y, LIU L H, REN L. Study on mechanical properties of lightweight aggregate concrete under high temperature［J］. Journal of Railway Science and Engineering, 2022, 19(10): 2976-2983 (in Chinese).

[5] [5] YU K Q, SHANG X Y, LU Z D. Determination of residual crack extension resistance of post-fire concrete by weight function method［J］. Journal of Tongji University (Natural Science), 2014, 42(4): 499-504+557 (in Chinese).

[6] [6] SHANG X Y, YU K Q, LU Z D. Determination of residual fracture energy of concrete subjected to elevated temperature［J］. Journal of Central South University (Science and Technology), 2014, 45(2): 589-595 (in Chinese).

[7] [7] DU H X, FAN Y N. Meso-structure damage of C60 high performance concrete at high temperature based on X-CT［J］. Journal of Building Materials, 2020, 23(1): 210-215 (in Chinese).

[8] [8] YU K Q, YU J T, LU Z D, et al. Fracture properties of high-strength/high-performance concrete (HSC/HPC) exposed to high temperature［J］. Materials and Structures, 2016, 49(11): 4517-4532.

[9] [9] XIANG S, ZENG L, ZHANG J C, et al. A DIC-based study on compressive responses of concrete after exposure to elevated temperatures［J］. Materials, 2019, 12(13): 2044.

[10] [10] Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Specification for mix proportion design of ordinary concrete: JGJ 55—2011［S］. Beijing: China Architecture & Building Press, 2011 (in Chinese).

[11] [11] HUO J S, HAN L H. Research on the axial and flexural rigidity of concrete-filled steel tubes after exposure to ISO-834 standard fire［J］. Industrial Construction, 2004, 34(1): 21-25+28 (in Chinese).

[12] [12] Ministry of Housing and Urban-Rural Development of the People’s Republic of China, State Administration for Market Regulation. Standard for test methods of concrete physical and mechanical properties: GB/T 50081—2019［S］. Beijing: China Architecture & Building Press, 2019 (in Chinese).

[13] [13] QING L B, CAO G R, GUAN J F. Experimental investigation of the concrete permissible damage scale based on the digital image correlation method［J］. Engineering Mechanics, 2019, 36(10): 115-121 (in Chinese).

[14] [14] TEKIELI M, DE SANTIS S, DE FELICE G, et al. Application of digital image correlation to composite reinforcements testing［J］. Composite Structures, 2017, 160: 670-688.

[15] [15] ZHAO Z H. Fracture characteristics of concrete under reciprocating load based on DIC［D］.Chongqing: Chongqing Jiaotong University, 2022 (in Chinese).

[16] [16] PAN B. Research progress on basic theory and application of digital image correlation method［C］// The 235th young scientists forum of cast: chance and challenge for experimental mechanics under extremely complex conditions. Beijing, 2011: 74-79 (in Chinese).

[17] [17] HE H J, ZHU J T. Review of research on damage and deterioration of concrete micro-structure at high temperature［C］// Carry out fire science and technology innovation and promote social public safety. 2017: 323-330 (in Chinese).

[18] [18] XIAO J Z, LIU L L, DONG Y L, et al. Progress of study on explosive spalling of high performance concrete at elevated temperatures［J］. Journal of Architecture and Civil Engineering, 2019, 36(3): 1-15 (in Chinese).

[19] [19] MA Q M, GUO R X, ZHAO Z M, et al. Mechanical properties of concrete at high temperature: a review［J］. Construction and Building Materials, 2015, 93: 371-383.

[20] [20] WANG L, ZHAO Y R, HAO S. Stress-strain relationship of concrete after high temperature in initial compaction stage［J］. Bulletin of the Chinese Ceramic Society, 2021, 40(11): 3627-3633+3653 (in Chinese).