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Erschienen in: Geotechnical and Geological Engineering 1/2019

11.06.2018 | Original Paper

Effect of Water on Long-Term Strength of Column Rocks Based on Creep Behavior in Yungang Grottoes, China

verfasst von: Xiaojie Yang, Jiamin Wang, Chun Zhu, Manchao He

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 1/2019

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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.

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Metadaten
Titel
Effect of Water on Long-Term Strength of Column Rocks Based on Creep Behavior in Yungang Grottoes, China
verfasst von
Xiaojie Yang
Jiamin Wang
Chun Zhu
Manchao He
Publikationsdatum
11.06.2018
Verlag
Springer International Publishing
Erschienen in
Geotechnical and Geological Engineering / Ausgabe 1/2019
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI
https://doi.org/10.1007/s10706-018-0601-0

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