scispace - formally typeset
Search or ask a question
Journal ArticleDOI

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

01 Jun 2015-Composite Structures (Elsevier)-Vol. 124, pp 100-110
TL;DR: In this paper, a finite element model has been developed and validated against the available test data, and a numerical test is carried out on two-span continuous bonded prestressed concrete beams.
About: This article is published in Composite Structures.The article was published on 2015-06-01 and is currently open access. It has received 23 citations till now. The article focuses on the topics: Prestressed concrete & Moment redistribution.

Summary (1 min read)

1. Introduction

  • In the finite element idealization, the concrete beam is divided into 36 two-node beam elements (18 elements for each span) with length of 555.56 mm each.
  • Each element is subdivided into 10 concrete layers, 1 tendon layer and 1 nonprestressed steel layer.

4.1. Failure mode and crack pattern

  • The evolution of neutral axis depth with the applied load and curvature, after the neutral axis reaches the extreme tension fiber of the section, for different tendon types and various x p levels is shown in Fig. 9 (a) and (b), respectively.
  • It is seen in Fig. 9 (a) that at a low x p level, the development of neutral axis depth exhibits a significantly nonlinear manner and the neutral axes at the center support and midspan move at almost the same rate.
  • After the evolution of cracks stabilizes, the shift of neutral axis in the AFRP prestressed concrete beam appears to be faster than that in the CFRP or steel prestressed concrete beam.
  • From Fig. 9 (b) it is seen that the neutral axis moves rapidly at first but the movement tends to slow down as the hogging or sagging curvature increases.
  • At a low x p level, the neutral axis depth for steel tendons is close to that for AFRP tendons, while at a high x p level the neutral axis depths for steel and CFRP tendons are comparable.

Did you find this useful? Give us your feedback

Citations
More filters
Journal ArticleDOI
TL;DR: In order to balance the cost performance of carbon and glass fibers, the unidirectional carbon/glass hybrid fiber reinforced polymer composite rods were developed through the pultrusion technology.
Abstract: In order to balance the cost performance of carbon and glass fibers, the unidirectional carbon/glass hybrid fiber reinforced polymer composite rods were developed through the pultrusion technology ...

38 citations

Journal ArticleDOI
TL;DR: In this article, a finite element model for the physical and geometrical nonlinear analysis of prestressed concrete beams with unbonded internal tendons, under short-term loading, is presented.

29 citations

Journal ArticleDOI
Tan D. Le1, Thong M. Pham1, Hong Hao1, Hong Hao2, Cheng Yuan1 
TL;DR: In this article, the authors investigated the use of carbon fiber-reinforced polymer (CFRP) tendons as an alternative solution for the precast segmental prestressed concrete beams (PSBs) to tackle the corrosion issue.

28 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical study on the long-term performance of bonded aramid fiber reinforced polymer (AFRP) prestressed concrete beams is presented, and the results are compared with those of steel ones.
Abstract: This paper presents a numerical study on the long-term performance of bonded aramid fiber reinforced polymer (AFRP) prestressed concrete beams. A computer model capable of predicting the service load long-term response of prestressed concrete beams with AFRP and steel tendons is developed. Model predictions agree well with the results of long-term tests on prestressed concrete beams. The time-dependent behavior of AFRP prestressed concrete beams is evaluated and the results are compared with those of steel ones. It is indicated that, when tendon relaxation is considered, AFRP tendons register a higher long-term prestress loss than steel tendons although the prestress loss contributed by concrete creep and shrinkage is significantly lower in AFRP tendons than in steel ones. As a consequence, AFRP tendons mobilize a lower prestressing camber and a higher downward load deflection compared to steel tendons. The analysis also shows that the influence of bottom nonprestressed steel on the time-dependent performance can be important or not so important, depending on the level of loading.

22 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of bond between composite tendons and concrete on the short-term behavior of fiber reinforced polymer (FRP) prestressed concrete beams was analyzed based on a nonlinear model that has been calibrated by experimental data.

21 citations

References
More filters
01 Jan 2002
TL;DR: The Emerging Technology Series as mentioned in this paper is a series of information and recommendations based on available test data, technical reports, limited experience with field applications, and the opinions of committee members, with a focus on the development and appropriate use of new and emerging technologies.
Abstract: *Co-chairs of the subcommittee that prepared this document. Note: The committee acknowledges the contribution of associate member Paul Kelley. ACI encourages the development and appropriate use of new and emerging technologies through the publication of the Emerging Technology Series. This series presents information and recommendations based on available test data, technical reports, limited experience with field applications, and the opinions of committee members. The presented information and recommendations, and their basis, may be less fully developed and tested than those for more mature technologies. This report identifies areas in which information is believed to be less fully developed, and describes research needs. The professional using this document should understand the limitations of this document and exercise judgment as to the appropriate application of this emerging technology.

2,963 citations

Journal ArticleDOI
TL;DR: In this article, the authors present a brief overview of anchored tendon applications while the primary literature review discusses three methods of mechanical anchorage: spike, wedge and clamping, and some proposals for future research are suggested.

171 citations

Journal ArticleDOI
TL;DR: The construction sector is one of the largest markets for fiber reinforced polymers (FRPs) globally as mentioned in this paper, and fiber reinforced polymer composites are used in a wide range of applications in construction ranging from rehabilitation to new buildings.
Abstract: Construction sector is one of the largest markets for fibre reinforced polymers (FRPs) globally. FRP composites are used in a wide range of applications in construction ranging from rehabilitation ...

122 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented a bond-type anchorage system for multi-rod CFRP tendons with a bonding medium of ultra-high performance RPC (Reactive Powder Concrete).

71 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present test results and code predictions of four continuously and two simply supported concrete slabs reinforced with basalt fiber reinforced polymer (BFRP) bars.

69 citations

Frequently Asked Questions (1)
Q1. What are the contributions in this paper?

Pisani [ 13 ] described a numerical study on the 66 flexural behavior of simply supported bonded and unbonded pre67 stressed concrete beams with steel and FRP tendons. Toutanji and 70 Saafi [ 15 ] tested a series of four simply supported concrete beams 71 prestressed AFRP tendons to study the flexural performance of 72 these beams. Dolan and Swanson [ 17 ] conducted a theoretical 78 and experimental study on the flexural capacity of simply sup79 ported beams prestressed with vertically distributed FRP tendons.