伦敦塔桥Tower Bridge

Tower Bridge (built 1886-1894) is a combined bascule and suspension bridge in London, over the River Thames. It is close to the Tower of London, from which it takes its name. 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.

伦敦塔桥（建于1886—1894年）位于伦敦泰晤士河上，是一座浮桥和吊桥相结合的大桥。它离伦敦塔很近，名字也是由此而来的。伦敦塔桥依靠桥上两个水平的通道将塔桥的两个塔连在了一起，之所这样设计是为了减轻向陆地延伸的两个塔的悬空部分所施加的水平压力。悬空部分压力的垂直力和两个通道的垂直反作用力是由两个稳健的塔来共同承担的。活动结构轴心和操纵装置覆盖在每个塔桥的地基里。塔桥现在呈现的色调是在1977年才开始使用的，当时是因为英国女王伊莉莎白二世的二十五周年纪念而被染成了红色、白色和蓝色。它最初的色调是蓝绿相间的。