Numerical Study of Precast Concrete Beam Under Impact Loads

2019 ◽  
pp. 557-568
Author(s):  
Huawei Li ◽  
Wensu Chen ◽  
Hong Hao
Keyword(s):  
Concrete Beam ◽  
Numerical Study ◽  
Precast Concrete ◽  
Impact Loads

scholarly journals Numerical study on beam-column connection of cantilever precast concrete beam with asymmetric shape under static load

2018 ◽  
Vol 195 ◽  
pp. 02009
Author(s):  
Hakas Prayuda ◽  
Robbi’al Rollyas Syandy ◽  
Bagus Soebandono ◽  
Taufiq Ilham Maulana ◽  
Martyana Dwi Cahyati
Keyword(s):  
Concrete Beam ◽  
Static Load ◽  
Numerical Study ◽  
Precast Concrete ◽  
Concrete Structures ◽  
Damage Mechanism ◽  
Cantilever Beams ◽  
Three Samples ◽  
Section Shape ◽  
Asymmetric Shape

Cantilever beams are generally used in all infrastructures, including precast concrete structures. In that type of structure, the asymmetric-section shape usage will be optimum and effective. However, in precast concrete structures, it might be susceptible especially in beamto- connection parts due to its strength. In this research, the damage mechanism of connections between cantilever beams and columns in precast concrete will be analyzed. The asymmetric shape will be applied in cantilever beams. Three samples were made with a length of 1500 mm equipped with six 10 mm-diameter deformed rebar and stirrup with 6 mmdiameter plain rebar. The results show that each of the three speciments has its own effectiveness based on stress, strain, displacement, load, and other related parameters.

Comparing the Seismic Performance of Beam-Column Joints with and without SFRC when Subjected to Cyclic Loading

2012 ◽  
Vol 626 ◽  
pp. 85-89 ◽  
Author(s):  
Kay Dora Abdul Ghani ◽  
Nor Hayati Hamid
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Experimental Work ◽  
Concrete Beam ◽  
Steel Fiber ◽  
Precast Concrete ◽  
Experimental Results ◽  
Column Joint ◽  
Initial Cracks

The experimental work on two full-scale precast concrete beam-column corner joints with corbels was carried out and their seismic performance was examined. The first specimen was constructed without steel fiber, while second specimen was constructed by mixed up steel fiber with concrete and placed it at the corbels area. The specimen were tested under reversible lateral cyclic loading up to ±1.5% drift. The experimental results showed that for the first specimen, the cracks start to occur at +0.5% drifts with spalling of concrete and major cracks were observed at corbel while for the second specimen, the initial cracks were observed at +0.75% with no damage at corbel. In this study, it can be concluded that precast beam-column joint without steel fiber has better ductility and stiffness than precast beam-column joint with steel fiber. However, precast beam-column joint with steel fiber has better energy dissipation and fewer cracks at corbel as compared to precast beam-column joint without steel fiber.

scholarly journals Numerical Study of Hydrodynamic Impact on Bubbly Water

2015 ◽  
Author(s):  
Mehdi Elhimer ◽  
Aboulghit El Malki Alaoui ◽  
Kilian Croci ◽  
Céline Gabillet ◽  
Nicolas Jacques
Keyword(s):  
Volume Fraction ◽  
Numerical Study ◽  
Numerical Data ◽  
Void Volume Fraction ◽  
Bubbly Liquid ◽  
Impact Loads ◽  
Hydrodynamic Impact ◽  
Physical Mechanisms ◽  
The Impact ◽  
The Relationship

The phenomenon of slamming on a bubbly liquid has many occurrences in marine and costal engineering. However, experimental or numerical data on the effect of the presence of gas bubbles within the liquid on the impact loads are scarce and the related physical mechanisms are poorly understood. The aim of the present paper is to study numerically the relationship between the void volume fraction and the impact loads. For that purpose, numerical simulations of the impact of a cone on bubbly water have been performed using the finite element code ABAQUS/Explicit. The present results show the diminution of the impact loads with the increase of the void fraction. This effect appears to be related to the high compressibility of the liquid-gas mixture.

Experimental Evaluation of Precast Concrete Beam-Column Connections with High-strength Steel Rebars

2018 ◽  
Vol 23 (1) ◽  
pp. 238-250 ◽  
Author(s):  
Dongzhi Guan ◽  
Zhengxing Guo ◽  
Cheng Jiang ◽  
Sen Yang ◽  
Hui Yang
Keyword(s):  
Experimental Evaluation ◽  
High Strength Steel ◽  
Concrete Beam ◽  
Precast Concrete ◽  
High Strength ◽  
Steel Rebars
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