量化在异型板中使用超高分子量泡沫塑料混凝土的适用性抗弯优势

IF 3 3区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Structural Concrete Pub Date : 2024-08-30 DOI:10.1002/suco.202300389
S. Chen, P. Visintin, A. B. Sturm, D. J. Oehlers
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引用次数: 0

摘要

实验证明,在异型板中使用超高性能纤维增强混凝土(UHPFRC),与不使用纤维的普通强度混凝土相比,可显著提高异型板与混凝土之间的粘结力以及裂缝混凝土的拉力。这些纤维优势的结果是大大提高了抗弯刚度,从而减少了挠度,同时也大大减少了裂缝宽度,从而改善了在使用负荷下的性能,提高了耐久性。为了量化这些优点,以便在设计中加以应用,我们开发了一种合理的局部相互作用数值模型,该模型可纳入任何类型超高压纤维增强混凝土的材料特性,包括时间效应。该模型有助于为特定纤维类型制定简化的设计规则。
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Quantifying the serviceability flexural benefits of using UHPFRC in profiled slabs
Using ultra‐high‐performance fiber‐reinforced concrete (UHPFRC) in profiled slabs, as opposed to normal strength concrete without fibers, has been shown experimentally to significantly increase both the bond between the profiled sheet and the concrete, and the tensile forces across cracked concrete. The consequence of these fiber benefits is to substantially increase the flexural rigidity leading to reduced deflections and also to substantially reduced crack widths leading to improved behavior under serviceability loads and to improved durability. To quantify these benefits so that they can be used in design, a rational partial‐interaction numerical model has been developed that can incorporate the material properties of any type of UHPFRC including time‐effects. This modeling should help in the development of simplified design rules for specific fiber types.
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来源期刊
Structural Concrete
Structural Concrete CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL
CiteScore
5.60
自引率
15.60%
发文量
284
审稿时长
3 months
期刊介绍: Structural Concrete, the official journal of the fib, provides conceptual and procedural guidance in the field of concrete construction, and features peer-reviewed papers, keynote research and industry news covering all aspects of the design, construction, performance in service and demolition of concrete structures. Main topics: design, construction, performance in service, conservation (assessment, maintenance, strengthening) and demolition of concrete structures research about the behaviour of concrete structures development of design methods fib Model Code sustainability of concrete structures.
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