泡沫碾压混凝土坝:一种空心坝的构想

Q4 Earth and Planetary Sciences Dams and Reservoirs Pub Date : 2022-01-14 DOI:10.1680/jdare.21.00030
E. Mohamed, Eehab Khalail
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引用次数: 0

摘要

碾压混凝土以其相对较低的成本和较短的施工时间而闻名。碾压混凝土重力坝要求地基(岩)承载力高。已经进行的研究建议通过制造气泡形状的内部空隙来合理化大坝中的材料数量。引入的气泡不能影响大坝的稳定和安全,这是关键要求。气泡将减少大坝的自重,并将所需的岩石承载能力降至最低。连接气泡的管道系统确保了气泡的排出。拟议中的大坝将节省约12%的所需混凝土体积。研究了不同的施工方法,最佳的替代方案是使用预制空心箱。这使碾压混凝土在大坝中的放置减少了32.5%。目的是加快施工过程,并尽量减少水化热的风险。
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Bubbled Roller Compacted Concrete Dam: an idea of a hollow dam
Roller compacted concrete is widely known for its relatively low cost and short construction time. RCC gravity dams require high foundation (rock) bearing capacity. Research has been carried out which proposes to rationalise the amount of material in the dam by creating inner voids, in the shape of bubbles. As a key requirement, the introduced bubbles should not affect the dam stability and safety. The bubbles will reduce the self-weight of the dam and minimise the required rock bearing capacity. A system of pipes connecting the bubbles ensures drainage of the bubbles. The proposed dam would save about 12% of the required concrete volume. Different construction methods were studied and the best alternative is the use of precast hollow boxes. This decreases RCC placement in the dam by 32.5%. The objective is to speed the construction process and minimise the risk of the heat of hydration.
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来源期刊
Dams and Reservoirs
Dams and Reservoirs Earth and Planetary Sciences-Geotechnical Engineering and Engineering Geology
CiteScore
0.50
自引率
0.00%
发文量
30
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