António Reis and Claudio Baptista, Portuqal
The Outstanding Paper Award is remitted each year to the author(s) of a paper published in the preceding year’s issues of the IABSE quarterly Journal Structural Engineering International (SEI), encouraging and rewarding contributions of the highest quality. The Award is presented in the categories ‘Scientific Paper’ and ‘Technical Report’.
IABSE has awarded the Outstanding Paper Award 2013 in the category ‘Technical Paper’: “Rehabilitation of the Suspension Bridge over Zambezi River in Mozambique” by António Reis and Claudio Baptista; Portugal; SEI 1/2013 (February), pp. 89-93.
The suspension bridge across the Zambezi River at Tete in Mozambique was built between 1965 and 1970. It is a multi-span suspension bridge with a total length of 720 m and an unique structural scheme. Inspections during 1999 and 2005 identified three major problems: unbalanced load on hanger system with major misalignments in deck geometry, hanger failure by fatigue and corrosion, and damage to the concrete caused by excessive rotations of main transverse beams suspended by hangers. This paper describes the most important design options and solutions put forth for the rehabilitation of the bridge and for extending its lifespan under increasing traffic loading.