Lightweight ceiling system made of carbon reinforced concrete
Lightweight ceiling system made of carbon reinforced concrete
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DOI：
10.1002/suco.201700224
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发表时间：
2018-12-01
影响因子：
3.2
通讯作者：
Curbach, Manfred
中科院分区：
文献类型：
--
作者：
May, Sebastian;Michler, Harald;Curbach, Manfred
在德累斯顿工业大学混凝土结构研究所，研究了一种新的预制天花板系统，该系统由每个纵向边缘的拱门和横梁组成。创新的复合材料碳增强混凝土为土木工程提供了一种新的思路，既具有轻量化结构，又具有高承载能力。这种变型的梁只有直钢筋作为主钢筋。在德累斯顿工业大学的otto - mohr实验室生产了四辆长度为4.50米的原型车并进行了测试。除了支撑外，结构的厚度在40到45毫米之间，因此与由普通钢筋和相同混凝土制成的通常矩形截面相比，可减少高达70.0%的自重。因此，前三个测试单元的试验极限荷载高于普通钢筋混凝土结构的计算极限荷载。
At the Institute of Concrete Structures, Technische Universitat Dresden, a new precast ceiling system comprised of an arch and a beam at each longitudinal edge was investigated. The innovative composite material carbon reinforced concrete allows thereby a fresh way of thinking for civil engineering with lightweight constructions but still high bearing capacity. This variation of a beam has only straight rebars as main reinforcement. Four prototypes with a length of 4.50 m were produced and tested at Otto-Mohr-Laboratory of TU Dresden. Except of the supports, the structure has a thickness between 40 and 45 mm, so a reduction of the dead load up to 70.0% compared to a usual rectangular cross section made of common steel reinforcement and the same concrete could be achieved. The experimental ultimate loads of the first three tested elements were thereby higher than the calculated ultimate load of the common reinforced concrete structure.