All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99

ViewsDownloads

Relative Articles

基于粘弹性本构的CFRP加固RC梁数值仿真分析
Numerical Simulation Analysis of RC Beams Strengthened with CFRP Using Viscoelasticity Constitutive

Experimental and Analytical Investigations on the Structural Behaviour of Steel Plate and CFRP Laminate Flexurally Strengthened Reinforced Concrete Beams

预应力碳纤维板加固RC梁二次受力抗弯性能研究
Study on the flexural behavior of RC beams strengthened with prestressed CFRP under secondary load

U形CFRP条带混锚加固混凝土梁抗剪试验
Shear tests on reinforced concrete beams strengthened with hybrid-anchored CFRP U-sheets

高负载下外贴式CFRP片材加固钢筋混凝土梁的耐火性能分析
Fire Resistance Analysis of EBR-CFRP-Strengthened RC Beams with High Load Ratio

BFRP和CFRP加固受弯混凝土界面疲劳性能试验
Experiment on Fatigue Behaviors of Flexural Concrete Interface Strengthened with BFRP and CFRP

Hysteretic Behavior of Steel Column Strengthened With CFRP in Thermal Environment

预应力CFRP布加固负载混凝土柱轴心受压性能研究
Research on Axial Compressive Properties of Preloaded Concrete Columns Strengthened with Prestressed CFRP Sheets

湿热环境下预应力CFRP加固高强混凝土的耐久性
Durability of High Strength Concrete Strengthened with Prestressed CFRP Under Wet-thermal Environments

CFRP加固钢筋混凝土直剪承载力试验
Experiment on Shear Transfer Capacity of Reinforced Concrete Strengthened with CFRP

More...
-  2018 

Behavior of RC two-way slabs strengthened with CFRP-steelgrid under concentrated loading

DOI: 10.3969/j.issn.1003-7985.2018.03.008

Keywords: reinforced concrete two-way slab, strengthening method, carbon fiber-reinforced polymer(CFRP)-steel grid, load-carrying capacity, deflection, yield-line

Full-Text   Cite this paper   Add to My Lib

Abstract:

A novel composite technique of orthogonally bonding carbon fiber-reinforced polymer(CFRP)strips and steel strips is proposed to improve the performance of reinforced concrete(RC)structures based on co-working of CFRP strips and steel strips. To verify the effectiveness of the method for strengthening RC two-way slabs, seven flat slabs with the dimensions of 1 500 mm × 1 500 mm × 70 mm and an internal reinforcement ratio of 0.22% were prepared and tested until failure under concentrated loading, of which one was unstrengthened, one was strengthened with CFRP strips bonded to its soffit making a grid pattern(termed the CFRP grid), and five were strengthened with a hybrid grid of CFRP strips and steel strips in two orthogonal directions(termed the CFRP-steel grid)to the bottom with steel bolt anchorage. The investigation parameters are the strengthening method, the strip spacing(150, 200, and 250 mm)and the layers of CFRP strips(one layer, two layers, and three layers of CFRP strips are applied for CFRP-steel grid). The experimental results show that the strengthening RC two-way slabs with CFRP-steel grid are effective in delaying concrete cracking and enhancing the load-carrying capacity and deformability in comparison to the CFRP grid strengthening. The yield-line analysis model is proposed to predict the load-carrying capacity of the strengthened slabs. The prediction results are in good agreement with the experimental results.

Full-Text

comments powered by Disqus