RELATIONSHIP BETWEEN THE INCREASE OF STRENGTH AND FAILURE MODE OF REINFORCED CONCRETE MEMBERS BY THE STRAIN RATE EFFECT IN AN EARTHQUAKE

The damage and failure of reinforced concrete (RC) slabs under blast loadings may cause significant hazards for frame systems even progressive collapse of whole structures. The numerical simulation of one-way RC slabs using the finite element explicit code LS-DYNA to estimate the dynamic response and failure mode of one-way RC slabs .Blast loadings are imposed on the top surface of slabs using a blast model based on conwep algorithm. Concrete was modeled using a concrete damage constitutive model considering strain rate effect, and reinforcement was modeled using a elastoplastic material type with kinematic hardening and strain rate effect. The numerical model is introduced in details and adopted to simulate the dynamic responses of RC slabs in reference test. The numerical model can match well with the test data, and thus the proposed numerical model can be considered as a valuable tool in assessing the deformation or failure mechanism and predicting the dynamic responses of one-way RC slabs subjected to blast loadings.

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A study of strain-rate effect and fiber reinforcement effect on dynamic behavior of steel fiber-reinforced concrete

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.09.093 ◽

2018 ◽

Vol 158 ◽

pp. 657-669 ◽

Cited By ~ 32

Author(s):

Xiaowang Sun ◽

Kai Zhao ◽

Yongchi Li ◽

Ruiyuan Huang ◽

Zhongbao Ye ◽

...

Keyword(s):

Reinforced Concrete ◽

Strain Rate ◽

Dynamic Behavior ◽

Steel Fiber ◽

Fiber Reinforcement ◽

Strain Rate Effect ◽

Rate Effect ◽

Fiber Reinforced Concrete ◽

Reinforcement Effect ◽

Steel Fiber Reinforced Concrete

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Dynamic analysis of reinforced concrete structure with strain rate effect

Materials Research Innovations ◽

10.1179/143307511x12858957673356 ◽

2011 ◽

Vol 15 (sup1) ◽

pp. s213-s216 ◽

Cited By ~ 1

Author(s):

H Zhang ◽

H N Li

Keyword(s):

Reinforced Concrete ◽

Dynamic Analysis ◽

Strain Rate ◽

Concrete Structure ◽

Strain Rate Effect ◽

Rate Effect ◽

Reinforced Concrete Structure

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Study on Strain Rate Effect in High-Rise Reinforced Concrete Shear Wall Structure

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.5854 ◽

2011 ◽

Vol 243-249 ◽

pp. 5854-5857

Author(s):

Hao Zhang ◽

Hong Nan Li ◽

Zhe Wang

Keyword(s):

Reinforced Concrete ◽

Dynamic Response ◽

Strain Rate ◽

Shear Wall ◽

Strain Rate Effect ◽

Rate Effect ◽

Wall Structure ◽

Nonlinear Dynamic Response ◽

High Rise ◽

Finite Element Software

The dynamic behavior affected by strain rate effect of the high-rise reinforced concrete shear wall structure subjected to seismic loading are analyzed by finite element software ABAQUS. The damaged plasticity model for concrete was used, and the strain rate effect of concrete and steel were considered. The nonlinear dynamic response results with strain rate effect are compared with the results without strain rate effect. The distribution of strain rate can not only influence the concrete and steel, but also have some effects on the dynamic response of the high-rise reinforced concrete shear wall structure. The strain rate effect is more prominent under the stronger seismic wave.

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