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A platform for research: civil engineering, architecture and urbanism
Effect of Water on Long-Term Strength of Column Rocks Based on Creep Behavior in Yungang Grottoes, China
https://orcid.org/0000-0003-2867-6478
Abstract The long-term strength of rock load-bearing elements is an important mechanical index to determine its bearing capacity and preservation when protecting cultural relics made of stone. In this paper, uniaxial compressive creep experiments of medium-coarse sandstone from the columns of the Yungang Grottoes were performed on both dried and water-saturated samples. The effects of rock-water interaction on the long-term strength of rocks and on the bearing capacity to evaluate safety were determined. The experimental results show that the instantaneous strength and long-term strength of the medium-coarse sandstone in a water-saturated state were lower than the dried samples. The creep properties of the saturated rock were more obvious and the time needed to achieve a steady state creep was longer. The safety factors of the long-term bearing capacity of water-saturated rocks were not high enough, which indicates the possibility of unstable damage to the columns. It is recommended to strengthen the column in a timely manner to prevent damage and potential safety issues, particularly waterproofing the columns for addition protection. Finally, these experimental results provide a reference for the long-term strength evaluation of rock columns, and provide a theoretical basis for waterproofing the World Cultural Heritage, Yungang Grottoes.
Effect of Water on Long-Term Strength of Column Rocks Based on Creep Behavior in Yungang Grottoes, China
https://orcid.org/0000-0003-2867-6478
Abstract The long-term strength of rock load-bearing elements is an important mechanical index to determine its bearing capacity and preservation when protecting cultural relics made of stone. In this paper, uniaxial compressive creep experiments of medium-coarse sandstone from the columns of the Yungang Grottoes were performed on both dried and water-saturated samples. The effects of rock-water interaction on the long-term strength of rocks and on the bearing capacity to evaluate safety were determined. The experimental results show that the instantaneous strength and long-term strength of the medium-coarse sandstone in a water-saturated state were lower than the dried samples. The creep properties of the saturated rock were more obvious and the time needed to achieve a steady state creep was longer. The safety factors of the long-term bearing capacity of water-saturated rocks were not high enough, which indicates the possibility of unstable damage to the columns. It is recommended to strengthen the column in a timely manner to prevent damage and potential safety issues, particularly waterproofing the columns for addition protection. Finally, these experimental results provide a reference for the long-term strength evaluation of rock columns, and provide a theoretical basis for waterproofing the World Cultural Heritage, Yungang Grottoes.
Effect of Water on Long-Term Strength of Column Rocks Based on Creep Behavior in Yungang Grottoes, China
https://orcid.org/0000-0003-2867-6478
Abstract The long-term strength of rock load-bearing elements is an important mechanical index to determine its bearing capacity and preservation when protecting cultural relics made of stone. In this paper, uniaxial compressive creep experiments of medium-coarse sandstone from the columns of the Yungang Grottoes were performed on both dried and water-saturated samples. The effects of rock-water interaction on the long-term strength of rocks and on the bearing capacity to evaluate safety were determined. The experimental results show that the instantaneous strength and long-term strength of the medium-coarse sandstone in a water-saturated state were lower than the dried samples. The creep properties of the saturated rock were more obvious and the time needed to achieve a steady state creep was longer. The safety factors of the long-term bearing capacity of water-saturated rocks were not high enough, which indicates the possibility of unstable damage to the columns. It is recommended to strengthen the column in a timely manner to prevent damage and potential safety issues, particularly waterproofing the columns for addition protection. Finally, these experimental results provide a reference for the long-term strength evaluation of rock columns, and provide a theoretical basis for waterproofing the World Cultural Heritage, Yungang Grottoes.
Effect of Water on Long-Term Strength of Column Rocks Based on Creep Behavior in Yungang Grottoes, China
Yang, Xiaojie (author) / Wang, Jiamin (author) / Zhu, Chun (author) / He, Manchao (author)
2018
Article (Journal)
Electronic Resource
English
BKL:
57.00$jBergbau: Allgemeines
/
38.58
Geomechanik
/
57.00
Bergbau: Allgemeines
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
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