Stress relaxation analysis of adhesively bonded anchorages for CFRP tendons

Puigvert, Francesc; Gil, Lluı́s; Escrig, Christian; Bernat, Ernest

doi:10.1016/j.conbuildmat.2014.05.082

Cited by 21 publications

(8 citation statements)

References 21 publications

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“…The anchorage effect of the bond-type anchorage system relies on the chemical adhesion, friction, as well as mechanical interlocking between the FRP bar and the bonding medium. The bonding media can be adhesive resin 113,114 or cementitious mortar. 101 The resin usually has a low elasticity modulus and strength, which is beneficial to alleviate the peak bond stress during loading and thus producing less harm to the shear strength of the bar.…”

Section: Bond-type Anchorage Systemmentioning

confidence: 99%

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Anchorage systems for reinforced concrete structures strengthened with fiber-reinforced polymer composites: State-of-the-art review

Wang

Zhu

Zhang

et al. 2020

Journal of Reinforced Plastics and Composites

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Fiber-reinforced polymer (FRP) composites have been widely used to strengthen the deteriorated reinforced concrete structures due to their outstanding characteristics of light weight, high strength, as well as noncorrosion. A successful strengthening with the FRP composites would equip the existing structures with the prominent improvement in terms of the durability, ductility, and bearing capacity. Current studies indicate that a simple and reliable anchorage system for the FRP composites will help improve the performance of the strengthened structures both efficiently and economically. Up till now, various anchorage systems have been developed for the FRP composites. Therefore, it is necessary to select appropriate anchorage systems according to different needs and establish relevant design specifications. In view of the aforementioned objectives, this paper systematically summarizes the anchoring mechanism of anchorage systems for two commonly used FRP products (FRP laminates and FRP bars) in different strengthened systems. Additionally, a state-of-the-art review as well as the advantages and disadvantages of each anchorage system are presented. Finally, shortcomings in the current state of knowledge and recommendations beneficial to further study are put forward.

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Section: Bond-type Anchorage Systemmentioning

confidence: 99%

“…Based on these results, the overall anchorage performance is clarified and anchorage mechanism is also clearly expounded. [112][113][114][115][116][117][118] Wedge-type anchorage system…”

Section: Bond-type Anchorage Systemmentioning

confidence: 99%

Anchorage systems for reinforced concrete structures strengthened with fiber-reinforced polymer composites: State-of-the-art review

Wang

Zhu

Zhang

et al. 2020

Journal of Reinforced Plastics and Composites

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“…One of the primary concerns for practical applications of 47 FRP tendons is related to anchorages [5]. Over past years, many 48 studies have been undertaken regarding the anchorage systems 49 for FRP tendons [6][7][8][9][10]. There are three basic composite materials 50 that may be used for prestressing tendons: glass FRP (GFRP), ara-51 mid FRP (AFRP) and carbon FRP (CFRP).…”

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confidence: 99%

A comparative study of continuous beams prestressed with bonded FRP and steel tendons

Lou

Lopes

2015

Composite Structures

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“…Combined with the practical situation on site, this phenomenon can be explained as follows: (i) The structure internal stress rapidly increases, due to the applied prestress; (ii) then, the stress attenuates as the soil is gradually compressed; (iii) and finally, the soil behind the structure is gradually consolidated, which gives rise to an increase in AOS. It is concluded that the stress attenuation of the prefabricated supporting structure is different from the phenomenon of the prestressed anchor cable [25].…”

Section: Structure Stressmentioning

confidence: 83%

“…2019, 9 FOR PEER REVIEW 10 attenuates as the soil is gradually compressed; (iii) and finally, the soil behind the structure is gradually consolidated, which gives rise to an increase in AOS. It is concluded that the stress attenuation of the prefabricated supporting structure is different from the phenomenon of the prestressed anchor cable [25]. In Figure 9, the AOS is not consistent at the two monitoring points at the same depth.…”

Section: Structure Stressmentioning

confidence: 87%

Test Study on the Stress and Deformation Behaviors of a Shaft Supported by a Prefabricated Prestressed Structure

et al. 2019

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Soil deformation control is the key to shaft support. To better control soil deformation, improve construction efficiency, and reduce pollution, this study proposed a prefabricated prestressed supporting structure. The structure consisted of prefabricated steel structure units and special prestressed components. The structure units were applied to retain the soil. The screws were used for prestressing. Field prototype tests were conducted to assess the support effects and analyze the stress and deformation behaviors of the shaft. The earth pressure, the stress in the structure unit, and the lateral displacement of the soil were monitored. The measured earth pressure varied between the earth pressure at rest and the passive earth pressure. The stress of the supporting structure was far less than the yield strength of steel. Changes in the earth pressure and structural stress can be divided into four stages: rapid attenuation, fluctuation, slow change, and stabilization. Both the earth pressure and the structure stress completed the major attenuation within three days of prestressing. The surrounding soil moved out from the shaft under prestress conditions and exhibited an obvious space-time effect. The study of stress and deformation provides guidance for the construction of newly prefabricated prestressed structures.

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Stress relaxation analysis of adhesively bonded anchorages for CFRP tendons

Cited by 21 publications

References 21 publications

Anchorage systems for reinforced concrete structures strengthened with fiber-reinforced polymer composites: State-of-the-art review

Anchorage systems for reinforced concrete structures strengthened with fiber-reinforced polymer composites: State-of-the-art review

A comparative study of continuous beams prestressed with bonded FRP and steel tendons

Test Study on the Stress and Deformation Behaviors of a Shaft Supported by a Prefabricated Prestressed Structure

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