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莫高窟壁畫加筋土地仗干縮變形研究=Shrinkage Deformation of Mural Plasters Reinforced with Natural Fabrics at the Mogao Grottoes |
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| Author |
杜文鳳 (著)=Du, Wenfeng (au.)
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張虎元 (著)=Zhang, Huyuan (au.)
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| Source |
敦煌研究=Dunhuang Research
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| Volume | n.1 (總號=n.149) |
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| Date | 2015.02 |
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| Pages | 116 - 123 |
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| Publisher | 敦煌研究編輯部 |
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| Publisher Url |
http://www.dha.ac.cn/
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| Location | 蘭州, 中國 [Lanzhou, China] |
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| Content type | 期刊論文=Journal Article |
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| Language | 中文=Chinese |
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| Note | 作者單位：蘭州大學土木工程與力學學院； 蘭州大學西部災害與環境力學教育部重點實驗室 |
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| Keyword | 壁畫=wall paintings; 地仗=plaster; 加筋材料=reinforcing fabrics; 收縮=shrinkage |
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| Abstract | 世界文化遺產敦煌莫高窟以精美的壁畫聞名于世。泥質地仗中添加植物纖維有助于提高地仗強度,但對于改善干縮方面的認識不足。本文利用液體石蠟法測試草泥層地仗和麻泥層地仗的收縮曲線,探討了不同含量的加筋材料對地仗層收縮性質的影響。收縮曲線表明,當地仗層中加入一種加筋材料時,隨著加筋材料含量的增加,地仗層不再發生收縮變形并且含水率(即縮限)不斷增大,體縮率不斷減小。分析認為,加筋材料增大了土顆粒之間的摩擦阻力,部分抵消了毛細壓力,從而限制了土體的干縮變形。這意味著,古人在澄板土中加入加筋材料不僅提高了地仗的強度,而且改善了澄板土的收縮特性,解決了濕地仗的失水收縮問題。
The Mogao Grottoes site at Dunhuang is famous for its wonderful wall paintings. Though natural fabrics added to the plaster can improve its strength, at present, little research has been done to understand the shrinkage properties of adding fabric. In this research, a paraffin oil method was used to measure the soil shrinkage characteristic curve(SSCC) of plasters mixed with different natural fabrics such as wheat, straw, and hemp.The SSCC test results indicate that as long as the type of natural fabric remains unchanged, when the amount of fabric increases the shrinkage limit of the silt soil will gradually increase while the volumetric shrinkage will gradually decrease. As our analysis indicates, the use of natural fabrics has increased the frictional resistance between the fabric and soil particles and partially counteracted the capillary force, thus controlling the shrinkage deformation of the soil. This means that ancient craftsmen knew how to improve the strength and control the shrinkage deformation of murals by adding natural fabrics to the silt soil for making mural plasters. |
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| ISSN | 10004106 (P) |
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| Hits | 245 |
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| Created date | 2016.06.04 |
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| Modified date | 2018.05.28 |
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