They comprise pre-stressed concrete edge beams connected by a structural slab and downstand ribs. The decks are suspended using arrays of cable stay rods from inclined steel pylons. Steel cable backstays hold the 25m high pylons at the correct inclination, and piled foundations provide vertical support. Using LUSAS, an eigenvalue analysis was initially undertaken and a series of closely spaced mode shapes were extracted; the fundamental mode was found to be at 0. This was considered low enough to cause concern and therefore a series of transient step-by-step dynamic analyses were performed.
Secondly in order to assess the effects of deliberate vandalism, the acceleration due to a group of people jumping up and down at the lowest natural frequency of the deck was also assessed. The same limiting acceleration value permitted by the sinusoidal dynamic load assessment was used and measured adjacent to the nearest jumping person. It was assumed that, if a group of people cannot cause appreciably large accelerations that can be felt by others, then nobody else will join in.
In both instances the results were found to be in accordance with the code requirements and at an acceptable level for pedestrian comfort.
The data from the eigenvalue extraction was later used to generate the parameters for the wind tunnel tests. Testing was necessary to investigate the susceptibility of the bridge decks to aerodynamic behaviour.
Furthermore, computer analysis showed that a three span model would have behaved quite differently to the full bridge. The wind tunnel tests gave favourable results, demonstrating a critical wind speed well in excess of the speed expected for the site; wind induced vibrations should not be noticeable.
The Hungerford footbridges give London a genuinely useful and attractive new river crossing, and a fitting landmark for the new millennium. Copyright - Last modified: September 10, Privacy policy. Today, most Londoners are familiar with the Golden Jubilee Bridges, the pair of modern footbridges, designed by Lifschutz Davidson Sandilands , which have flanked the Hungerford or Charing Cross Bridge since A little further east he built the Great Eastern steamship in , which was by far the biggest ship in the world at the time and continued to be so for over 40 years.
London owes him a big debt. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Skip to content Brunel's suspension innovation is long gone but some of its brickwork and its name are still very much with us. Victor Keegan. And what, my soul, of this cast iron and bronze London? Where the iron plates ring in the workshops? In stations of soot and smoke where the gaslights weep Their sad silver, so far away from the lighted streets The baleful beasts' bellows mark time Their doleful sounds like the Westminster chimes.
And these unending quays lined with dim lanterns Appearing as torches carried down to the depths. And these drowned sailors, fathoms under the mud, Flower where the flame gleams. And these steps like these gestures of drunken women, And these tipsy letters of gold up to the rooftops, And, all of a sudden, death among these crowds; O my dark soul, this black London drags you down!
Charing Cross Railway Bridge, Whistler, The above photograph shows the station as it was before the collapse of the arched roof in , the details of which are here: www. Charing Cross Bridge, Monet, Claude Monet painted Charing Cross Bridge, London in , during the last of three consecutive winter trips to the English capital.
The artist stayed on the sixth floor of the Savoy Hotel; looking to his right he could see the railway bridge running from Charing Cross Station and beyond it the neo-Gothic towers of the Palace of Westminster. The canvas reveals Monet's fascination with the golden light of early morning, filtered through London's characteristic fog, which is dispersed and transformed into veils of lavender-pink, lemon yellow, and powder blue.
The overall mood is expansive, encompassing the past, as seen in the city's historic architecture, as well as the present, represented by a speeding train. Two multispan footbridges have been constructed, each m long and 4.
The scheme which consists of two new suspension footbridges supported by white-painted steel rods which fan out from slanting steel pylons.
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