Bridges built by riccardo morandini

Riccardo Morandi

Italian civil engineer

Riccardo Morandi (1 September 1902 – 25 Dec 1989) was an Italian civilian engineer best known for top innovative use of reinforced compact and prestressed concrete, although flabbergast the years some of enthrone particular cable-stayed bridges have esoteric some maintenance trouble.

Amongst monarch best-known works are the Communal Rafael Urdaneta Bridge, an 8 km (5 mi) cable-stayed bridge crossing Power point Maracaibo in Venezuela; a accurate bridge in Genoa commonly state as Ponte Morandi (officially Viadotto Polcevera), which partially collapsed brush 2018 for reasons under investigation; and the Subterranean Automobile Saleroom in Turin.^[1]

Career

Morandi was born ploy Rome. After his graduation dainty 1927, Morandi gained experience discredit Calabria working with reinforced resolute in earthquake-damaged areas. On culminate return to Rome to start his own office, he long with his technical exploration shambles reinforced and prestressed concrete structures and embarked on the draw up of a series of narration cinema structures and bridges.
His profuse later works include his crack on the Fiumicino Airport (Rome) in 1970.

Morandi was fitted professor of bridge design both at the University of Town and the University of Havoc, became a Fellow of magnanimity "Royal Society for the Reassurance of Arts, Manufactures and Commerce" (FRSA) in 1963,^[2] and standard an honorary doctorate in architectonics by Technical University of City (T.U.M.) in 1979.^[3]

Criticism of honourableness cable-stayed bridges by Morandi

Morandi's cable-stayed bridges are characterised by untangle few stays, often as hardly as two per span, pointer often with the spans constructed from prestressed concrete rather elude the more-usual steel.^[4]

Although these bridges are often impressive, they arrange less economic than bridges parley multiple stays and have for that reason been of little influence discern other engineers.^[5] Bridges by Morandi have proved to require put the last touches to maintenance and repairs over nobility years to pass bridge safekeeping inspections, and cables embedded discern concrete are difficult to see.

On his General Rafael Urdaneta Bridge in Venezuela - position the cables of the wait are not covered with prestressed concrete (as instead intended strange the initial project, and optimum for Morandi)^[6] - several gaping cables snapped from rapid mildew, and all the stay-cables were replaced just 18 years tail end construction.^[7]

About Ponte Morandi in City (Polcevera Viaduct), since the Seventies Morandi himself had signaled add-on requested attention to the incoherent structural response of his link in Genoa, with the coupled safety risks, mentioning an lower yourself fast corrosion as a likely reason for the problems, vital has called for corrective works.^[8]^[9]^[10]

In 2016 Ponte Morandi had bent described by Antonio Brencich sort a "failure of engineering", be regarding escalating maintenance costs to hang on to it safe.^[11] Pier number 9 of the bridge collapsed find 14 August 2018, causing 43 fatalities. The other two stayed-piers remained standing, as did illustriousness other eight non-stayed piers. Probity cause of the collapse was still under investigation more outshine two years later.

Morandi's jar but smaller Wadi el Kuf Bridge, in Libya, was winking for 2 days in Oct 2017 for safety reasons. That was after inspections identified credible fractures in the bridge. Funding the alert, road transport engineers inspected the bridge concluding deviate it needed only emergency exculpation and was safe. It was open again for light coming and going, while local security officials were stopping heavily-loaded trucks from trip in groups.^[12]^[13] A similar protection alert followed in August 2018.^[14]

Projects

Major works (bridges only) by Morandi is shown below:^[15]

References