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LIU Ming, LIU Bo-quan, XING Guo-hua. Flexural performance of RC beam strengthened with highstrength steel wire mesh and polymer mortar overlay[J]. Journal of Traffic and Transportation Engineering, 2011, 11(4): 10-16. doi: 10.19818/j.cnki.1671-1637.2011.04.002
Citation: LIU Ming, LIU Bo-quan, XING Guo-hua. Flexural performance of RC beam strengthened with highstrength steel wire mesh and polymer mortar overlay[J]. Journal of Traffic and Transportation Engineering, 2011, 11(4): 10-16. doi: 10.19818/j.cnki.1671-1637.2011.04.002
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Flexural performance of RC beam strengthened with highstrength steel wire mesh and polymer mortar overlay

doi: 10.19818/j.cnki.1671-1637.2011.04.002

  • School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China

Funds:

National Natural Science Foundation of China 51078037

Specialized Research Fund for the Doctoral Program of Higher Education of China 20090205120008

Natural Science Foundation of Shaanxi Province 2010JM7002

More Information
  • Author Bio:

    LIU Ming(1957-), Female, Xi'an, Shaanxi, Associate Professor of Chang'an University, Research on Structural Engineering, +86-29-82334008, lium@chd.edu.cn

  • Received Date: 2011-02-22
  • Publish Date: 2011-08-25
    Abstract
  • The load-deflection curves of RC beam strengthened with high-strength steel wire mesh and polymer mortar overlay were analyzed, and the bond mechanism between concrete surface and polymer mortar was studied. The overall flexural behaviour of strengthened beam could be divided into precracking stage, cracking stage and failing stage, and an analysis model of section moment and mid-span deflection for RC beam was developed based on plane assumption. The overall flexural behaviour of strengthened beam subjected to concentrated load was analyzed by using transformed section method, and the model was verified by using the test data of 10 strengthened beams. Analysis result shows that the average ratios between the test values and computation values of yielding moment and ultimate moment of beam section are 1.027 and 1.094 respectively, the average ratios between the test values and computation values of yielding mid-span deflection and ultimate mid-span deflection are 1.286 and 0.918 respectively, so the model is feasible.

     

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    • References(14)
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