ZHONG Huaqiao
School of Civil Engineering, Shanghai Normal University, Shanghai201418, P. R. ChinaZHAO Jiajing
School of Civil Engineering, Shanghai Normal University, Shanghai201418, P. R. ChinaYAO Chuanqin
School of Civil Engineering, Shanghai Normal University, Shanghai201418, P. R. ChinaZHANG Dexuan
School of Civil Engineering, Shanghai Normal University, Shanghai201418, P. R. ChinaLI Xi
School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha410114, P. R. China1.School of Civil Engineering, Shanghai Normal University, Shanghai201418, P. R. China;2.School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha410114, P. R. China
Supported by National Key R&D Program of China(2019YFC1520600) and Shanghai Sailing Program (21YF1432700).
Grotto temples face extensive damage from natural factors and human activities and salt erosion is a critical issue. Quantifying the damage extent in surface salt efflorescence stage is crucial for subsequent preservation efforts. This study investigates salt efflorescence in the North Grotto Temple in Qingyang City, Gansu Province, employing PFC 2D software to simulate surface salt formation. Active thermal infrared detection is used to examine the relationship between temperature changes and efflorescence thickness. Results indicate that when subjected to identical stimuli, the temperature of sandstone surface is lower than that of saltated surfaces and surface temperature increases as salt efflorescence thickness increases. A power function fitting the normalized temperature-time curves reveales a notable negative linear relationship between the exponent and salt efflorescence thickness. This exponent can serve as a warming index, realizing the quantitative assessment of salt efflorescence damage.
钟华锹,赵嘉进,姚传芹,张得煊,李希.石窟寺表面泛盐病害热学响应的离散元模拟[J].重庆大学学报,2024,47(10):110~119
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