Analysis of Prestressed Concrete Multi-Cell Box Girder Curved Bridge
Analysis of Prestressed Concrete Multi-Cell Box Girder Curved Bridge
Analysis of Prestressed Concrete Multi-Cell Box Girder Curved Bridge
Abstract: Prestressed concrete structures are widely used in all over the world. They give better performance with smaller cross
sections. The prestressed concrete construction is more suitable for medium and long span bridges with heavy loads. Now the
prestressed concrete system is also used in curved bridge with long span. It has become challenge to analyze this bridge deck due to
geometric complexities and interaction between bending and torsion. In this paper, the analysis of horizontally curved prestressed
concrete box girder bridge deck is studied by using three dimensional modeling and analysis. Section geometry, material properties and
radius of curvature are same in all the models while angle of curvature is varying from 0o to 90oand angle of curvature are kept
constant as 30°,60° and 90° and its radius of curvature varying from 25 m to 50m.Analysis is carried out using the IRC Class AA
loading. The 3D Finite Element Models are prepared using SAP software. The results for stresses are observed by keeping the same
material properties.
Keywords: Prestressed concrete, curved bridge, Finite element analysis, Indian Road Congress, Class AA load
5. Analysis
The study of stresses of horizontally curved prestressed
concrete box bridges is presented by using three Figure 3: FEM Bridge model for curved bridge.
dimensional finite element analysis software SAP 2000.The
multi-cell box girder bridge with different angles of
curvatures were selected for the study of stress distribution.
All the bridges has radius of 40 m and the Curvature angles
varying from 00 to 900.The corresponding spans are from
13.96 m to 62.83m in length. The geometry of bridge is as
shown in the Fig.1
Volume 5 Issue 6, June 2016
www.ijsr.net
Licensed Under Creative Commons Attribution CC BY
Paper ID: ART20162 http://dx.doi.org/10.21275/v5i6.ART20162 2456
International Journal of Science and Research (IJSR)
ISSN (Online): 2319-7064
Index Copernicus Value (2013): 6.14 | Impact Factor (2015): 6.391
Table 1: Mid span Stress Distribution for curvature angle Table 4: Mid span Stress Distribution for radius of
300 curvature 40m
Radius(m) Span(m) Longitudinal Stress(MPa) Curvature Span(m) Longitudinal Stress(MPa)
Top Bottom angle Top Bottom
25 13.09 -4.66 -1.22 200 13.96 -4.67 -1.57
30 15.708 -4.38 -1.67 300 20.94 -4.66 -0.959
35 18.326 -4.53 -1.75 400 27.92 -4.39 -1.509
40 20.94 -4.67 -0.96 500 34.91 -4.65 -1.677
45 23.56 -4.82 -0.83 600 41.89 -4.015 -1.955
50 26.18 -2.22 -1.33 700 48.87 -3.887 -2.109
800 55.85 -3.64 -2.72
Table 2: Mid span Stress Distribution for curvature angle 900 62.83 -3.54 -2.67
600
Radius(m) Span(m) Longitudinal Stress(MPa) Table 5: Mid span Stress Distribution for radius of
Top Bottom curvature 50m
25 26.18 -2.17 -13.30 Curvature Span Longitudinal Stress(MPa)
30 31.42 -2.12 -12.96 angle (m) Top Bottom
35 36.65 -4.56 -2.85 200 13.96 -4.529 -1.404
40 41.89 -2.03 -3.07 300 20.94 -2.224 -1.329
45 47.12 -2.19 -4.51 400 27.92 -4.383 -1.195
50 52.36 -3.946 -1.787 500 34.91 -4.232 -1.032
600 41.89 -3.946 -1.787
Table 3: Mid span Stress Distribution for curvature angle 700 48.87 -3.714 -2.097
900 800 55.85 -3.407 -2.921
Radius(m Span(m) Longitudinal Stress(MPa) 900 62.83 -2.953 -4.372
) Top Bottom
25 39.2727 -3.7616 -2.79
30 47.12 -3.71 -2.69
35 54.98 -3.43 -3.37
40 62.83 -3.39 -3.24
45 70.69 -3.21 -4.21
50 78.54 -2.95 -4.37
8. Future Scope
References
[1] Ali R. Khaloo and M. Kafimosavi(2007)“Enhancement
of Flexural Design of Horizontally Curved Prestressed
Bridges”, Journal of bridge engineering, Vol.12,
No.5,Septembar.
[2] Anagha S. Parkar,John B. Mander and Mery Beth
(June2012) “Continuous Prestressed concrete girder
bridge” Vol1,FHWA/TX-12/0-6651-1.
[3] Chirag Garg and M.V.N.Shivakumar (May2014)
“Prestressed tendons system in box girder bridge” IJCE,
2278-9987,Vol 3,Isuue 3.
[4] IRC 6-2014 “Standard specifications and code of
practice for road bridges”,section-II loads and
stresses,Indian Road Congress.New Delhi.
[5] IS1343-1980 Code of Practice for Prestressed Concrete.
[6] IS 1893-2002 Criteria for earthquake resistant design of
structures.
[7] Mulesh K. Pathak (January 2014) “Performance of RCC
Box type Superstructure in Curved bridges”
International Journal of Scientific & Engineering
Research, Volume 5, Issue 1,ISSN 2229-5518.
[8] Nikhil Ingawale and D.B.Kulkarni (April2015)
“Dynamic Analysis of reinforced concrete horizontally
curved beam by software” IJERT,4(4).
[9] Nikhil Ingawale and D.B.Kulkarni (June2015)
“Parametric study of horizontally curved bridge girder”
IJOER,3(3).
Author Profile
Khairmode A.S., student IVth sem, M.tech structural
engineering, Civil Engineering Department,
Rajarambapu Institute of Technology, Rajaramnagar,
Islampur, India.