Mangjiedu Bridge in Xiaowan Hydropower Station

Mangjiedu Bridge in Xiaowan Hydropower Station
Investigation by the State Forestry Design Institute of Kunming.
The bridge is located in Little Bay Power Station reservoir area, as across the reservoirs built.
Bridge span arrangement for the 3 × 50m +116 m +220 m +116 m +4 × 50m.
Bridge with a main span 220m, to 168m of the large pier high continuous rigid frame bridge. In the same type of bridge, its piers high as second in the world. The bridge is located in the reservoir, when the Little Bay Power Station to the normal water level when, 168m pier will be about 166m in the water. Such a deep situation of high piers or in the actual project rare.

Sham Shui Po, span, ultra-high piers, narrow bridge, and high intensity are the basic features of the bridge. Difficult to design the bridge is very high and it is very challenging.Analysis of seismic response and how to consider the coupling effect of water is a bridge pier design emphasis and difficulty.

Upon completion of the preliminary design of the bridge, the bridge by bridge and tunnel in our hospital have done a lot of calculation and analysis. Application of MIDAS 6.71, bridges, Dr. DrBridge3.1, SAP2000 and ANSYS10.0 (civilFEM) and other software on the bridge was done in a more comprehensive calculation and analysis. Calculation of the main contents are: static, stability, calculation and analysis of seismic and wind.