Rigid-body-spring model numerical analysis of joint performance of engineered cementitious composites and concrete

FIBRE CONCRETE 2017

Khmurovska, Y.^1 ; Štemberk, P.^1 ; Kistek, V.^1

Department of Concrete and Masonry Structures, Czech Technical University, Thákurova 7, Prague 6

166 29, Czech Republic^1

关键词: Engineered cementitious composite (ECC);    Experimental investigations;    Joint performance;    Numerical investigations;    Polyvinyl alcohol fiber;    Rigid body spring models;    Strain hardening effects;    Structural details;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/246/1/012041/pdf
DOI  :  10.1088/1757-899X/246/1/012041

来源: IOP

【 摘 要 】

This paper presents a numerical investigation of effectiveness of using engineered cementitious composites with polyvinyl alcohol fibers for concrete cover layer repair. A numerical model of a monolithic concaved L-shaped concrete structural detail which is strengthened with an engineered cementitious composite layer with polyvinyl alcohol fibers is created and loaded with bending moment. The numerical analysis employs nonlinear 3-D Rigid-Body-Spring Model. The proposed material model shows reliable results and can be used in further studies. The engineered cementitious composite shows extremely good performance in tension due to the strain-hardening effect. Since durability of the bond can be decreased significantly by its degradation due to the thermal loading, this effect should be also taken into account in the future work, as well as the experimental investigation, which should be performed for validation of the proposed numerical model.