Brief Analysis on Technical Innovation of Design for Grand Bridge of Qilian Road of Xige Line 2

On account of the double track railway continuous girder with large span,the "line-bridge-pier" theory for CWR is applied in the rail structure and force performance of line-bridge-pier of railway bridge in large span structure is analyzed;it successfully solve the problems of three dimensional prestressed steel cable of large span railway continuous girder and its design at high seismic area.