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Title: Analysis of T Beam bridge for seismic characterization
Researcher: Roseenid Reresa A
Guide(s): Umarani C
Keywords: Bridge
Civil engineering
T beam
Upload Date: 12-Feb-2014
University: Anna University
Completed Date: 01/05/2012
Abstract: Roads are the lifelines of modern transport and bridges are the most critical parts of transportation systems. They are susceptible to failure if their structural deficiencies are unidentified. A large number of bridges constructed around the world were designed during the period when bridge codes had no seismic design provisions, or when these provisions were insufficient according to the current standards. Also, due to aging and the growth of vehicular loads in magnitude and volume, many existing bridges in India are experiencing deterioration. As the construction of new bridges involves huge time and money, the repair and rehabilitation of old and damaged bridges are necessary, to preserve their load carrying capacity and service performance. In the present study, an existing reinforced cement concrete T-beam cum slab road bridge (Koyambedu bridge) was assessed for its seismic characterisation. A live load test on the study bridge was conducted, to measure the flexural responses of the longitudinal and the cross girders. The strain histories obtained from the experimental investigation indicated the nonlinear response of the longitudinal girder and linear response of the cross girder. The effective flexural stiffness (EIeff) of the longitudinal girder was found to be 0.8 times the gross flexural stiffness (EIg).A three-dimensional nonlinear finite-element model of the reinforced cement concrete bridge, was developed and analysed, using SAP2000. On modal analysis, two modes (mode#1 and mode#8) were participating in the vibration of the structure in the transverse direction and a single mode (mode#2) was participating in vibrating the structure in the longitudinal direction. Modal pushover analyses were performed in both the transverse and longitudinal directions independently. In the mode#1 and mode#8 pushover analyses in the transverse direction, the performance level of the plastic hinges at the bottom of the columns in the mid-bent exceeded the collapse prevention performance level.
Pagination: xxv, 181p.
Appears in Departments:Faculty of Civil Engineering

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01_title.pdfAttached File59.85 kBAdobe PDFView/Open
02_certificate.pdf5.35 kBAdobe PDFView/Open
03_abstract.pdf11.56 kBAdobe PDFView/Open
04_acknowledgement.pdf6.11 kBAdobe PDFView/Open
05_contents.pdf40.71 kBAdobe PDFView/Open
06_chapter 1.pdf32.5 kBAdobe PDFView/Open
07_chapter 2.pdf471.3 kBAdobe PDFView/Open
08_chapter 3.pdf20.65 kBAdobe PDFView/Open
09_chapter 4.pdf4.31 MBAdobe PDFView/Open
10_chapter 5.pdf842.1 kBAdobe PDFView/Open
11_chapter 6.pdf692.88 kBAdobe PDFView/Open
12_chapter 7.pdf129.28 kBAdobe PDFView/Open
13_chapter 8.pdf270.78 kBAdobe PDFView/Open
14_chapter 9.pdf60.9 kBAdobe PDFView/Open
15_chapter 10.pdf21.09 kBAdobe PDFView/Open
16_references.pdf22.74 kBAdobe PDFView/Open
17_publications.pdf7.37 kBAdobe PDFView/Open
18_vitae.pdf5.97 kBAdobe PDFView/Open

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