Overview And New Technology Of Prestressing Steel – Concrete Composite Bridge

Pramod Kumar Gupta*, Vikash Khatri**
* Professor and Head, Department of Civil Engineering, Institute of Technology (BHU), Varanasi, India.
** Research Scholar, Department of Civil Engineering, Institute of Technology (BHU), Varanasi, India.
Periodicity:December - February'2012
DOI : https://doi.org/10.26634/jce.2.1.1749

Abstract

Prestressed concrete and steel concrete composite are commonly used for constructing bridges. Construction of prestressed concrete bridge is time taking and less reliable. Steel concrete composite bridges have problem of excessive deflection under dead and super imposed loads, live load and deflection due to shrinkage and creep of deck slab concrete. External post-tensioning for strengthening of existing bridges has been used in many countries and has been found to provide an efficient and economic solution for a wide range of bridge types and conditions. External prestressing is now being used for construction of new bridges also. The paper introduces a new concept of prestressed steel-concrete composite bridge, in which external post-tensioning is used in the steel-concrete composite bridge. In the prestressed steel-concrete composite bridge, high tensile wires are tensioned by means of jacks bearing on the end block of the concrete deck slab and anchored. As a result, longitudinal stress level of the concrete deck slab is raised, which not only eliminates shrinkage and creep strains but also improves its fatigue performance. 40.0m and 72.0m spans, un-supported and supported during construction composite and prestressed composite bridges have been considered for the comparison. It is concluded that prestressing not only raises stress level of the deck slab concrete improving its fatigue performance, but it also improves strength and stiffness of the bridge considerably. Further, it is concluded that prestressed steel-concrete composite bridges need not be supported during construction as the deflections under dead load and imposed load are eliminated using prestress. This is highly desirable for longer spans. For example, prestressed steel-concrete composite bridges can be used for longer span up to 80m in comparison to prestressed concrete bridges and steel concrete composite bridges, which can be constructed up to 40m span only.

Keywords

prestressed, external post-tensioning, steel, concrete, composite and bridge

How to Cite this Article?

Singh, K, P., and Khatri, K. (2012). Overview And New Technology Of Prestressing Steel – Concrete Composite Bridge. i-manager’s Journal on Civil Engineering, 2(1), 1-9. https://doi.org/10.26634/jce.2.1.1749

References

[1]. Aravinthan, T. (1999). "Flexural Behaviour and Design Methodology of Externally Prestressed Concrete Beams" PhD thesis, Saitama University, Saitama Japan.
[2].Collings.D, (2005). “Steel concrete composite bridges.” Thomas Telford publishing Ltd. London.
[3]. Daly, A.F. and Witarnawan W. (1997), 'Strengthening of bridges using external post-tensioning', Transport Research Laboratory, Birkshire, U.K.
[4]. Hyo-Gyoung Kwak and Young-Jae Seo. (2000), “Long-term behavior of composite girder bridges”. Computers and Structures 74 583-599.
[5]. IRC: 6-2000, “Standard specifications and code of practice for road bridges. Section II, Loads and stresses.” Indian road congress, New Delhi.
[6]. IRC: 22-1986, “Code of practice for road bridges. Section VI, composite construction.” Indian road congress, New Delhi.
[7]. IS 800: 2007, “General construction in steel-code of practice.” Bureau of Indian standards, New Delhi.
[8]. Jhonson. R.P., “Composite structure of steel and concrete.” Oxford Blackwell publication. London.
[9]. Kasim, S.Y and Chen, A. (2006), “Conceptual design and analysis of steel concrete composite bridges: state of art.” Technical article.
[10]. Kim, H.Y, Jeong.Y.J, Kim.J.H and Park.S.K. (2005), “Steel concrete composite deck for PSC Girder bridges.” Journal of civil engineering, KSCE. Vol. 9, No. 5, September.pp.385-390.
[11]. Miyamoto, A., Tei, K., Nakamura, H., and Bull, J. W. (2000). "Behavior of Prestressed Beam Strengthened with External Tendons." Journal of Structural Engineering, 126(9), 1033-1044.
[12]. Nakamura.S, Momiyama.Y, Hosaka.T and Homma.K. (2002), “New technologies of steel/concrete composite bridges.” Journal of Constructional Steel Research 58.pp.99-130.
[13]. Singh, P.K., (2008). 'Fatigue in Concrete decks of cable stayed bridges', Proc. Int. Conf. on 'Innovations in Structural Engineering and Construction', Taylor & Francis Group, London.
[14]. Suntharavadivel, T. G., and Aravinthan, T. (2005). "Overview of External Post-Tensioning in Bridges." Southern Engineering Conference, D. Thorpe, U.Yadav, C. Snook, and G. Liang, eds., Engineers Australia, Queensland Division, Toowoomba, Australia, 29-38.
[15]. Tan, K. H., Farooq, M. A.-A., and Ng, C. K. (2001). "Behavior of Simple-Span Reinforced Concrete Beams Locally Strengthened with External Tendons."ACI Structural Journal, 98(2), 174-183.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
USD EUR INR USD-ROW
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.