کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5112752 | 1483950 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Megalithic stone beam bridges of ancient China reach the limits of strength and challenge size effect in granite
ترجمه فارسی عنوان
پلهای سنگی مگالتیک چین باستان به محدودیت قدرت و چالش اندازه گرانیت می رسند
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کلمات کلیدی
پرتو سنگ، قدرت گرانیت، سنگ قبرستان، اثر اندازه،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
In all ancient monuments, stone beams and architraves have unsupported spans that seldom reach 7Â m, while ordinary spans are usually much less. These structural elements were and still are believed to be prone to failure, so that several relieving systems (arches, chambers, gaps) were adopted through history to prevent collapse. The perception that stone beams could not exceed a certain span is coherent with the so-called size-effect theory of rock and concrete, which predicts that large elements are proportionally weaker than small ones. While the rest of the world started using architectural design to avoid these problems, in the Fujian region of China (near Xiamen) from the XI to the XIIÂ century megalithic stone beam bridges with spans of up to 21Â m were being built. These bridges have resisted over the centuries. A spectacular example of these bridges, tending to disprove the size-effect theory and challenging all previous ancient constructions, is the Jiangdong bridge, of which only a part survives, but which should be restored, preserved, and declared human heritage monument.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cultural Heritage - Volume 26, JulyâAugust 2017, Pages 167-171
Journal: Journal of Cultural Heritage - Volume 26, JulyâAugust 2017, Pages 167-171
نویسندگان
Ferdinando Bigoni, Davide Bigoni, Diego Misseroni, Dongdong Wang,