Numerical Simulation of the Fiber Pulled out from Steel-Fiber Concrete

2015 ◽  
Vol 723 ◽  
pp. 427-430
Author(s):  
Jun Liu

ANSYS finite element analysis software is used to simulate the pull-out process of hooked-end steel fiber from concret in this paper. The contact element is adapted to simulate the interface contact of fiber and concrete, the effect of concrete matrix damage is ignored, the plastic deformation of fibers is considered and the numerical results is good compared with test results. In addition, the effect of some influencing factor on the pull-out process of fibers such as the interface friction coefficient, elastic modulus of matrix, the tensile strength of steel fiber and concrete shrinkage characteristics are discussed.

2021 ◽  
Vol 871 ◽  
pp. 330-339
Author(s):  
Fang Hua Li

Self-compacting steel fiber concrete must meet the strength standard after steel fiber is added and must have good fluidity. The test results show that the addition of steel fiber to concrete will affect the fluidity of concrete. Compared with ordinary concrete, the addition of steel fiber will improve the compressive strength and flexural tensile strength of concrete to varying degrees. The mix proportion test can be carried out in stages, i.e. the mix proportion meeting all performance indexes used is determined first, then steel fiber is added and adjusted to determine the best mix proportion.


Author(s):  
Aaron Kadima Lukanu Lwa Nzambi ◽  
Jeandry Bule Ntuku ◽  
Dênio Ramam Carvalho de Oliveira

2011 ◽  
Vol 374-377 ◽  
pp. 1606-1609
Author(s):  
Pan Zhang ◽  
Yan Kun Zhang ◽  
Xiao Hu Li ◽  
Zhen Lei Guo

Based on the experimental research, the prism compressive strength and cubic compressive strength of specified density steel fiber concrete are studied. Through regression analysis, the influence of type of steel fiber, volume content of the fiber and substitution ratio of lightweight aggregate is studied. According to the test results, the formula of prism compressive strength and cubic compressive strength is given.


2013 ◽  
Vol 275-277 ◽  
pp. 1163-1166
Author(s):  
De Rong Zhu ◽  
Zi Jiang Yang ◽  
Hui Zhang ◽  
Shi Zhong Liu ◽  
Gui Xia Ning

Orthotropic steel deck; Shear nail; Steel fiber concrete pavement layer; Stress analysis. Abstract. Aiming at the optimization design of composite pavement on orthotropic deck in a streamlined steel box girder with lager wide-to-span ratio, finite element analysis is taken under various loads supplemented with static model; the stress distribution is analyzed in each part of the pavement layer. The theoretical results show that the deck of the bridge displays obviously orthotropic features; shear nails with reasonable density can increase the binding capability of each part of deck pavement and overall mechanical performance. It can be concluded that the service life of the deck pavement can be extended by the use of steel fiber concrete layer.


2011 ◽  
Vol 250-253 ◽  
pp. 3975-3982 ◽  
Author(s):  
Ji Sheng Qiu

Steel fiber concrete multi-ribbed composite slab system includes material composite and structure type composite, which has good mechanical and thermal insulation properties. This paper presents an assessment of the structure investigated using three-dimensional nonlinear finite elemental analysis. The analysis firstly has focused on solving the constitutive relation of the materials and the effect of steel fiber to determine the finite element simulation. Moreover nonlinear finite element analysis for the mechanical properties of the whole process on the composite structure system has been presented in this paper, and by changing the fiber volume fractionvf(0%, 1%, 2% and 3%) the parameter has been discussed. The analysis results show that stress distributions of the structure are close for different concrete strength and steel fiber volume fraction before formation of the plastic hinge lines of the upper edges. When the structure began to crack and the plastic hinge lines of upper edge gradually formed, due to the influence of the redistribution of internal forces, the steel fiber volume fraction has significant impact for the mechanic behavior of the structure. In addition, the steel fiber volume fraction on the developing and distribution of the cracks has little effect. This analysis method and results for the steel fiber concrete multi-ribbed composite structure can provide some valuable references for the structure research and application.


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