工程力学功课(国外英文资料).docVIP

工程力学作业 Study number: 200911327: wang yaotian major: logistics management 1002 class The engineering mechanics of life Life phenomenon or engineering problem: zhaozhou bridge is also known as anji bridge, built in the year of sui grand (605-618), which was built by famous craftsman li chun. The bridge is 64.40 meters long and 37.02 meters in diameter. It is the largest and the earliest single-hole open shoulder stone arch bridge in the world today. For shoulder each have two holes on both ends of the bridge, not real, therefore calls open shoulder type, this is one of the history of the world to build a bridge to create (no small arch is called a full shoulder or solid shoulder type). Zhaozhou bridge is now 1400, has experienced 10 times floods, eight wars and earthquakes, especially the magnitude 7.6 earthquake of 1966 xingtai, is apart from the zhaozhou bridge is only 40 kilometers, the zhaozhou bridge are not damaged, well-known bridge expert MAO yisheng said, regardless of the internal structure of the bridge, is it can exist only 1300 years says it all. According to the record, zhaozhou bridge has been repaired eight times since its completion. Keywords: zhaozhou bridge, endurance, dissipation principle, Relevant knowledge of mechanics analysis: China stone bridge has the characteristics of stable structure, the design of the main reason is that it completely accord with mechanics principle, or force of energy dissipation principle. First look at the big arch two shoulders, on which each have two small arch, the creative design to reduce the weight of the bridge, is also at the ends of the great arch foundation greatly ease the pressure, is a kind of artificial light building design and materials, is now hollow brick. Surge in the river at the same time, when the wind increased to increase little tunnel of water and wind power, reduce flooding on the impact of the bridge, thus plays a role in energy consumption, protect themselves, to reduce the impact. Analysi