Cracking and Tension Stiffening of High-Strength Concrete Panels

2012 ◽  
Vol 109 (1) ◽  
Sadhana ◽  
2014 ◽  
Vol 39 (6) ◽  
pp. 1497-1507 ◽  
Author(s):  
SMITHA GOPINATH ◽  
R AYASHWARYA ◽  
V RAMESH KUMAR ◽  
PRABHAT RANJAN PREM ◽  
A RAMA CHANDRA MURTHY ◽  
...  

1993 ◽  
Vol 20 (4) ◽  
pp. 696-707 ◽  
Author(s):  
H. Marzouk ◽  
Z. W. Chen

Concrete slabs supported on four edges and loaded axially and transversely are used in many civil engineering applications. High-strength concrete slabs are commonly used for marine structures and offshore platforms. The catastrophic nature of the failure exhibited by reinforced concrete slabs when subjected to concentrated loads has been a major concern for engineers over many years. Therefore, there is a great need to develop accurate numerical models suitable for normal-strength or high-strength concrete in order to reflect properly its structural behaviour.Proper simulation of the post-cracking behaviour of concrete has a significant effect on the nonlinear finite element response of such slabs. Cracking and post-cracking behaviour of concrete which includes aggregate interlock, dowel action, and tension-stiffening effects is especially crucial for any nonlinear concrete analysis. The post-cracking behaviour and the fracture energy properties of high-strength concrete are different from those of normal-strength concrete. This can be realized by comparing the experimental testing results of plain normal- and high-strength concrete. The experimental results of testing plain high-strength concrete in direct tension indicated that the total area under the stress - crack width curve in tension is different from that of normal-strength concrete.A suitable softening and tension-stiffening model is recommended for high-strength concrete; other existing models suitable for normal-strength concrete are discussed. The proposed post-cracking behaviour models are implemented in a nonlinear finite element program in order to check the validity of such models by comparing the actual experimental data with the finite element results. Finally, a parametric study was conducted to provide more insight into the behaviour of high-strength concrete slabs subjected to combined uniaxial in-plane loads and lateral loads. The effects of the magnitude of in-plane load and the sequence of loading on the structural behaviour of such slabs are examined. Key words: high-strength concrete, slabs, punching shear, fracture energy, tension-softening, tension-stiffening, parametric study.


2018 ◽  
Vol 115 (1) ◽  
Author(s):  
Yue Huang ◽  
Ehab Hamed ◽  
Zhen-Tian Chang ◽  
Stephen J. Foster

2017 ◽  
Vol 149 ◽  
pp. 35-49 ◽  
Author(s):  
Satadru Das Adhikary ◽  
Lado Riannevo Chandra ◽  
Abraham Christian ◽  
Khim Chye Gary Ong

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