NDLI: An innovative concept for strengthening damaged RC beam using prestressed UHPC layer

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An innovative concept for strengthening damaged RC beam using prestressed UHPC layer

Content Provider	Scilit
Author	Zhang, Yang Huang, Songling Zhu, Yanping Zhang, Chongyang
Copyright Year	2021
Description	Reinforced concrete (RC) structures are subjected to a variety of levels of damage. In order to improve their performance, the authors propose an innovative concept, using prestressed ultra-high performance concrete (UHPC) layer to strengthen damaged RC structures. Finite element analyses were performed to investigate the flexural resistance, deformation characteristics, and failure modes of RC beams strengthened with prestressed UHPC layers. Also, parametric analyses were carried out to reveal the influence of the reinforcement ratio and prestressing level on the flexural capacity of the strengthened beams. The results indicate that prestressed UHPC layers significantly improve the stiffness, cracking and ultimate flexure capacity of RC beams. Also, increasing the prestressing level and reinforcement ratio in the UHPC layer could increase the cracking load and ultimate load, respectively. Thus, using prestressed UHPC layers might be an effective strengthening method to address issues such as insufficient bending capacity in seriously damaged RC members. Book Name: Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations
Related Links	https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9780429279119-539&type=chapterpdf
Ending Page	3945
Page Count	6
Starting Page	3940
DOI	10.1201/9780429279119-539
Language	English
Publisher	Informa UK Limited
Publisher Date	2021-04-19
Access Restriction	Open
Subject Keyword	Book Name: Bridge Maintenance, Safety, Management, Life-cycle Sustainability and Innovations Civil Engineering Structures Strengthening Reinforcement Prestressed Uhpc Layers
Content Type	Text
Resource Type	Chapter

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