Application of GIS technology in scouring protection project of the Sutong Bridge

This paper analyses the present situation of bank slump and existing problems, discusses on the structures and features of three kinds of bank protectors of scour protector, storm protector and biological protector, and puts forward some practicable engineering schemes for the treatment of the bank areas.

According to features of diffcult anti-washing construction of pier foundation under compley hydroraphic,gological, and water potential conditions, combining construction condition methods, author analyze and conclude keypoints and difficulties of anti-washing construction of the fourth main pier of Great Sutong Bridge, and difficulties inconstruction and relevant countermeasures.

According to features of difficult anti-washing construction of pier foundation under complex hydrographic,geological,and water potential conditions,combining construction methods,authors analyze and conclude key points and difficulties of anti-washing construction of the north tower pier of main bridge of Great Sutong Bridge,and difficulties happened in construction and relevant countermeasures.

Key techniques for scouring protection of the main pylon pier of Sutong Bridge;

Combination of spur-dike and apron for scour protection to highway subgrade by river side;

Design and construction of scour protection for deep-water group pile foundation structures of two pylons in Sutong Bridge

In order to apprehend the protection mechanism of combination of spur dike and retaining wall for scour protection to highway subgrade along river bends,volume of fluid (VOF) method,a modern 3D moving interface(tracing) technology and standard k—ε model are jointly used in present study to numerically simulate the flow field of river bends where spur dike is located.