利用SIFCON提高混合动力平板的抗弯性能

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY
Aliyaa M. Alsheameri, Laith Sh. Rasheed, Aymen J. Alsaad
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引用次数: 0

摘要

摘要平板系统由于其通用性和对空间的有效利用,在建筑中得到了广泛的应用。然而,它们易受弯曲破坏,特别是在张力区。为了解决这一问题,浆料浸润纤维混凝土(SIFCON)因其卓越的强度和耐久性而被提出作为一种解决方案。本研究考察了在受拉区使用SIFCON对平板系统抗弯性能的影响。该研究包括测试8块相同的板,其中2块是用普通混凝土浇筑的,其余6块是混合混凝土浇筑的。试件经受竖向荷载,比较其抗弯性能,确定SIFCON层的最佳尺寸。这些楼板尺寸相同,但加固程度不同。A组的强化率ρ = 0.5%, B组的强化率ρ = 0.35%。所有板在受拉区SIFCON层的厚度均为20mm,但SIFCON层的尺寸与板的尺寸有不同(分别为100,50,30%)。一个尺寸为(140 × 140 × 20) mm的方形板支撑了所有板的负载。荷载逐渐施加直至破坏,并记录每块板的荷载-挠度曲线。结果表明,在受拉区使用SIFCON可以提高平板体系的抗弯性能。与使用普通混凝土的对照板相比,SIFCON混合板具有更高的极限荷载和更低的挠度。其中,添加100% SIFCON的杂交板表现出最好的效果,与对照板相比,a组和B组的极限荷载分别提高了179和100%。与对照板相比,a组和B组的挠度分别降低了62.35%和52.38%。研究发现,SIFCON尺寸的最佳组合为覆盖50%板尺寸,且混合配筋体系的配筋面积较小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancement of flexural behavior of hybrid flat slab by using SIFCON
Abstract Flat slab systems are widely utilized in construction due to their versatility and efficient use of space. Nevertheless, they are susceptible to flexural failure, particularly in the tension zone. To address this issue, slurry-infiltrated fiber concrete (SIFCON) has been proposed as a solution owing to its exceptional strength and durability. This research examines the effect of utilizing SIFCON in the tension zone of flat slab systems to enhance their flexural performance. The study encompasses testing eight identical slabs, two of which were cast with normal concrete, while the remaining six were hybrid slabs incorporating SIFCON. The specimens were subjected to vertical loading to compare their flexural behavior and identify the optimal dimensions for the SIFCON layer. The slabs had identical dimensions but varied in reinforcement. Group A had a reinforcement ratio of ρ = 0.5%, whereas Group B had a ratio of ρ = 0.335%. All slabs had a constant thickness of the SIFCON layer of 20 mm in the tension zone but varied in the dimensions of the SIFCON layer (100, 50, 30%) from the slab dimensions. A square plate with dimensions (140 × 140 × 20) mm supported the load for all slabs. The load was applied gradually until failure, and the load–deflection curves were recorded for each slab. The result showed that using SIFCON in the tension zone improved the flexural resistance of flat slab systems. The hybrid slabs with SIFCON demonstrated higher ultimate loads and lower deflections than the control slabs that used regular concrete. In particular, the hybrid slabs with a 100% SIFCON layer exhibited the best results, with a rise in ultimate load of 179 and 100% for Groups A and B, respectively, compared to the control slabs. In addition, there was a significant decrease in deflection of 62.35 and 52.38% for Groups A and B, respectively, relative to the control slabs. The study found that the optimal combination of the SIFCON dimension was when the 50% slab dimension was covered and the reinforcing bar area for the hybrid reinforcement system was smaller.
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来源期刊
Open Engineering
Open Engineering ENGINEERING, MULTIDISCIPLINARY-
CiteScore
3.90
自引率
0.00%
发文量
52
审稿时长
30 weeks
期刊介绍: Open Engineering publishes research results of wide interest in emerging interdisciplinary and traditional engineering fields, including: electrical and computer engineering, civil and environmental engineering, mechanical and aerospace engineering, material science and engineering. The journal is designed to facilitate the exchange of innovative and interdisciplinary ideas between researchers from different countries. Open Engineering is a peer-reviewed, English language journal. Researchers from non-English speaking regions are provided with free language correction by scientists who are native speakers. Additionally, each published article is widely promoted to researchers working in the same field.
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