Thames Barrier Research Paper

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The Thames Barrier is a structure of regulation of the flow of the river Thames. It was built between 1974 and 1982 in Woolwich Reach. The barrier was officially opened on 8 May 1984 by Queen Elizabeth II. It is the second-largest work of flood protection after that of Maeslantkering in Netherlands. Located at the south of London, the Thames Barrier was realized after a long process of design and construction, it protects London from the danger of flooding tide. The work deserves interest and studies, not only for the technical characteristics and the engineering results achieved, but also for the events preceding the development of the project, and for the construction work lasted ten years, marked by the respect of the original project and…show more content…
Pier roofs are made of timber with a skin of stain less protection. For the laminated beams it is used iroko timber (a hardwood tree sometimes referred to as African Teak) and European pine. Wooden rubbing strips protect against damage by ship impact. Each central pier is 50 m from the bottom to the top, 11m wide x 65m long. They all have machinery rooms, service routes, stairways, a lift, a crane for machinery maintenance. Beneath the water between each pier there is a sill made of concrete cellular form. It contains a layer of blocks of stones that protects the river bed against the scour from fast moving…show more content…
The flood gates are circular segments in cross section, and they operate by rotating. They are raised to allow underspill, to allow operators to control upstream levels. A complete 180 degree rotation allows maintenance. At the underspill position, a controlled amount of water pass under the gate and up the Thames. The rocking beam is moved by two hydraulic cylinders. They are linked and work in opposite directions. The rocking beam is raised by the pulling of the upper linkage and pushing off the lower linkage. A connecting link between the tip of the rocking beam and the gate arm transfers the beam movement and makes the gate rotate. The shift and latch mechanism holds a gate in position. It can move the gate into the underspill position or the maintenance position. Many parts of the hydraulic system are duplicated so that each gate can be closed by any one of its two power

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