Mechanics in Engineering ›› 2018, Vol. 40 ›› Issue (3): 281-288.DOI: 10.6052/1000-0879-17-347

• Applied Research • Previous Articles     Next Articles

NUMERICAL SIMULATION OF CRACK GROWTH OF REINFORCED CONCRETE FLEXURAL MEMBERS BASED ON XFEM1)

XIA Yu, ZHOU Shibo, LONG Jiaxin ,LI Jing   

  1. School of Architecture and Civil Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China
  • Received:2017-10-16 Revised:2018-01-18 Online:2018-06-15 Published:2018-07-17
  • Contact: 1) 国家自然科学基金(51569005,51469005),广西自然科学基金(2015GXNSFAA139279),广西科技大学研究生教育创新计划(GKYC201711),广西国家级大学生创新创业训练(201710594046),广西自治区级大学生创新创业训练(201710594174,201710594180)资助项目

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Abstract:

Based on the maximum principal stress criterion, the crack propagation of reinforced concrete three point bending beams are simulated with the XFEM (extended ˉnite element method). The accuracy and the effectiveness of the proposed method are veriˉed by comparing with the results of the existing model test. It is shown that the crack growth and the mechanical properties of the reinforced concrete members with cracks are not only affected by the size, the position, the inclination angle of the single crack, but also affected by the location of the cracks. The transverse and longitudinal distributions of cracks are the main factor that affects the crack growth path and the mechanical properties of the reinforced concrete beams with cracks.

Key words:

reinforced concrete, crack propagation, extended ˉnite element method, three point bending beam

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