It may be single- or double-leafed. The bridge shown consists of a moveable deck (C-D), tie rods (A-D), a balance frame including counterweights (A-B-E), and a portal support frame. The river top was 17 feet below the rail tops on one side and of the bridge and 16 feet below on the other. Cherry Street Strauss Trunnion Bascule Bridge, Cherry Street lift bridge over the Keating Channel, Chicago & Illinois Western Railroad Bridge, Chicago Madison & Northern Railroad Bridge, Elgin Joliet & Eastern Railroad Bridge#710, Pittsburgh Fort Wayne & Chicago Railroad Bridge#1, Pittsburgh Fort Wayne & Chicago Railroad Bridge #2, Lake Shore & Michigan Southern Railroad Bridge#1, Lake Shore & Michigan Southern Railroad Bridge#2, Baltimore & Ohio Chicago Terminal Railroad Bridge, Chicago & Western Indiana Railroad Bridge, Bruckner Boulevard and Expressway (I-278), http://historicbridges.org/bridges/browser/?bridgebrowser=ontario/selkirk/, https://portstanleyheritage.com/open5.htm, "Crews prepare for intensive surgery on Wells Street Bridge", List of medieval stone bridges in Germany, https://en.wikipedia.org/w/index.php?title=List_of_bascule_bridges&oldid=971485109, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, CN Bridge, across the Red River, Winnipeg, Manitoba (non functional), Murray Street Bridge, Sydenham River, Wallaceburg, Ontario, Dundas Street Bridge, Sydenham River, Wallaceburg, Ontario, Lord Selkirk Bridge, Sydenham River, Wallaceburg Ontario, King George VI lift Bridge, Kettle Creek, Port Stanley, Ontario, Bascule bridge, Potshausen, Lower Saxony, Germany, Lindaunis Bridge, Boren, Schleswig-Holstein, Germany. requires use of an elevated bridge or use of a couterbalance pit to lengthen the counterbalance arms. However, it was not until the adoption of steam power in the 1850s that very long, heavy spans could be moved quickly enough for practical application. If there is a hinged connection, it's referred to as ophaalbrug (literally "drawbridge"). balance frames (as shown) to assist in the lifting operation of the deck. Note that in Dutch basculebrug only refers to bascule bridges that have their counterweight rigidly connected to the bridge deck. The fixed-trunnion (sometimes a "Chicago" bascule) rotates around a large axle that raises the span(s). Bridge 4 is a twin-leaf, Chicago-type bascule bridge, with its counterweights located under the road deck. "Strauss bascule" redirects here. There are three types of bascule bridge designs,[1] and counterweights required to balance a bascule's span may be located either above or below the bridge deck. The first simple-trunnion bascule bridge utilizing his design was built over the Chicago River in 1902. For the company started by its inventor, see, Joseph Strauss (engineer) § Early career and the bascule bridge, Cherry Street Strauss Trunnion Bascule Bridge, "Landmark Designation Report: Historic Chicago Bridges", "Patent number 669348: T. Rall movable bridge", United States Patent and Trademark Office, "Broadway Bridge, Spanning Willamette River at Broadway Street [sic], Portland, Multnomah County, OR", List of medieval stone bridges in Germany, https://en.wikipedia.org/w/index.php?title=Bascule_bridge&oldid=980266860, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, Pedestrian, bicycle, automobile, truck, light rail, heavy rail, This page was last edited on 25 September 2020, at 14:47. Bascule bridges have been in use since ancient times. Most of the design for this bridge came from spending lots of time studying the photos of the FEC Strauss Bascule Bridge on the site mentioned above. A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. Offset columns can be used to allow larger rotational movement of the deck. [4][6], Tower Bridge in London, perhaps the most famous and iconic bascule bridge of all time, Dimensional drawing of the London Tower Bridge, The Birkenhead Bridge in Port Adelaide, Australia, fully opened, Cherry Street Strauss Trunnion Bascule Bridge at Toronto Harbour Shipping Channel, Toronto, Cherry Street Bridge at Keating Channel in Toronto, Canada. Bascule bridges have counterbalance weights positioned either in the deck or in overhead A bascule bridge is a type of drawbridge consisting of two counterweighted leaves or spans which pivot upward on a horizontal axis to allow boat traffic to pass underneath. The longest rolling bridge in the world and the only with hydraulic counterweight. This arrangement requires the provision of a pit which preferably needs to be kept dry and is therefore usually positioned above the water level. Another Strauss design, the Lefty O'Doul Bridge adjacent to Oracle Park in San Francisco, California, Mystic River Bascule Bridge, Mystic, Connecticut, Pamban Bridge over the Palk Strait in Rameswaram, India, Rolling lift Pegasus Bridge over the Caen Canal, Normandy, France, Bascule bridge in Montceau-les-Mines, France. A flood in 1849 swept away a number of floating bridges and drawbridges proved to be too narrow to accommodate the influx of people traveling thro… The Chicago bascule name derives from the location where it is widely used, and is a refinement by Joseph Strauss of the fixed-trunnion. All the other bascule bridges on the Welland Canal are single-leaf Rall-type bridges, with counterweights suspended on a frame structure over the roadway. Bascule bridges have counterbalance weights positioned either in the deck or in overhead balance frames (as shown) to assist in the lifting operation of the deck. If the pivot points are positioned to the rear of the back of the deck then most of the rubbish on the deck can be prevented from entering the pit when the deck is raised. • Tower Bridge in London, perhaps the most famous and iconic bascule bridge of all time Any vibrations in the deck are transmitted to the frame. The counterweights help balance each side of the bridge during the … By magnifying the photos you can get a pretty good impression of how the bridge was built. Järnvägsbron (järnvägen Herrljunga-Uddevalla), River Bann Rail Bridge, Coleraine, Northern Ireland, The 'White' Bridge, Carmarthen [Railway Bridge], Norfolk and Southern train trestle over the Savannah River, Augusta Georgia, Six movable bridges are found in Joliet, Illinois-, Cypress Street Bridge, Manistee, Michigan, Pere Marquette Railroad Bridge, Port Huron, Michigan, Pelham Bay Railroad Bridge, Bronx, New York City, New York, Alfred Cunningham Memorial Bridge, New Bern, North Carolina, Pasquotank River Bridge, Elizabeth City, North Carolina, CSX Transportation Bridge, Wilmington, North Carolina, Passyunk Avenue Bridge, Philadelphia, Pennsylvania, University Avenue Bridge, Philadelphia, Pennsylvania, This page was last edited on 6 August 2020, at 12:36. This is not an example of the work produced by our Essay Writing Service. 1866 words (7 pages) Essay. Constructed of timber, it was similar to bridges found over moats at medieval castles, with large chains lifting it. [2], The rolling lift trunnion (sometimes a "Scherzer" rolling lift), raises the span by rolling on a track resembling a rocking chair base. The tender design asked for a double flap bascule bridge with a free span of 85 m, Fig. If the pivot is positioned at the end of the deck at its neutral axis then no vibrations are transmitted to the frame. The "Scherzer" rolling lift is a refinement patented in 1893 by the American engineer William Donald Scherzer. In order to guarantee equilibrium at every position during lifting, it is necessary to locate the pin connections in the balance frame at the vertices of a parallelogram (A-B-C-D). Bascule bridges with overhead counterweights (as shown above) are usually considered when the waterway width does not exceed 20 metres. This span is small for the design ship – 20.000 dwt, L = 250 m, W = 35 m, sailing at 2,2 m/s – but left the main piers – founded on piles – in the water and, hence, exposed to ship impact. Art.21.LockingRodsandBuFipere 33 IVTHEIVIACHIRERY 35 Art.22.TheInertiaofthePpan 35 Art.23.TheYJindReeiBtance 35 Art.24.TheFrictionalResistance 36 Art.25*ThePowerRequiredforOperating 36 Art.26.TheOperatingMachinery 37 VSUBSTRUCTURE 4l Art.27*DeterminationoftheLoadEffects 4l Art.2^.DesignofStrutsandBracings 41 Art.29.GrillageFoundations 42 VIDESIGNCORRECTION 44 … For spans larger than 20 metres this arrangement : Spans larger than about 20 metres usually have the counterbalance weights positioned in the deck. In the years that followed, there was much trial and error as new styles were designed. 4.1. should be parallel to the virtual line between pivot C and the centre of gravity of the deck (approximately point D in the bridge shown). Secondary beams attached at the ends of the deck can also be provided to avoid transmitting vibrations to the frame. The Bridge Division of the Chicago Department of Public Works held a juried competition in 1899 to encourage innovation in bridge design, which was won by Chicago City Engineer John Ericson. The Patagones-Viedma Railway Bridge, Argentina. [4] It was patented (1901) by Theodor Rall. [3], The rarer Rall type combines rolling lift with longitudinal motion on trunnions when opening. The name comes from the French term for balance scale, which employs the same principle. Bascule bridges are the most common type of movable span because they open quickly and require relatively little energy to operate, while providing the possibility for unlimited vertical clearance for marine traffic. The earliest movable bridge in Chicago was a drawbridge at Dearborn Street built in 1834. This animation shows the movement of a double-leaf bascule. Bascule bridge Kidderpore Kolkata (Calcutta)127-year-old. Railway Rolling lift bridge in Oldenburg, Germany, Salmon Bay Bridge, a single-leaf through truss with overhead counterweight, Seattle, Washington, US, Kuala Terengganu Drawbridge in Terengganu, Malaysia, The Ashtabula lift bridge, a 1925 Strauss bascule built in Ohio, US, Wabash Avenue Bridge in Chicago, Illinois, US, Sturgeon Bay Bridge, Sturgeon Bay, Wisconsin, Via Rail Dayliner crossing the Johnson Street Bridge after completing a Victoria-Courtenay round trip, 13 May 2008, The Strauss design Johnson Street Bridge across Victoria Harbour, British Columbia, Canada; built in 1924, The new Johnson Street Bridge in Victoria, British Columbia, Canada, Bridge, normally over water, which can rotate upwards to allow tall objects to pass beneath it.

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