Tower Bridge
Tower Bridge (built 1886-1894) is a combined bascule and suspension bridge in London,England,over the River Thames.It is close to the Tower of London,from which it takes its name.It has become an iconic symbol of London.
The bridge consists of two towers tied together at the upper level by means of two horizontal walkways,designed to withstand the horizontal forces exerted by the suspended sections of the bridge on the landward sides of the towers.The vertical component of the forces in the suspended sections and the vertical reactions of the two walkways are carried by the two robust towers.The bascule pivots and operating machinery are housed in the base of each tower.The bridge's present colour scheme dates from 1977,when it was painted red,white and blue for the Queen Elizabeth II's silver jubilee.Originally it was painted a mid greenish-blue colour.
Tower Bridge is sometimes mistakenly referred to as London Bridge,which is the next bridge upstream.
伦敦塔桥（建1886-1894）,一个组合式结构,悬索桥坐落在英国的泰晤士河边.从它的名字看,它靠近伦敦塔.它已成为伦敦的地标性建筑.桥上层由两个塔两个水平通道联系在一起,设计用于承受由桥悬浮段对塔向陆侧的水平力.两个垂直通道在悬浮段力的垂直分量是来自两个强大的塔.臂支点和操作机器被安置在每个塔基.桥梁的颜色方案的日期从1977,当它被涂成红色,为英国女王伊丽莎白二世的银禧白色和蓝色.原本它是画中的蓝绿色的颜色.塔桥有时被错误地称为伦敦桥,但它是在伦敦桥上游.
