Study on Geological Comparison of Site Schemes for Nujiang Grand Bridge on Dali-Ruili Railway
The Nujiang Brand Bridge to be built is one of the key control projects on Dali-Ruili Railway.It locates within Nujiang Fault Zone,the collision suture zone of Baoshan Block and Tengchong Block,and the deep and large faults and folds are developed along the both banks with complex structures and unfavorable geology.Therefore the influence of such complicated geological environment and constraint of geological route selection of front and rear lead engineering result in difficult site selection.Based on three bridge site schemes for comparison confirmed by previous work,the engineering geological conditions of these three sites is analyzed and studied;combined with the geological conditions in the front and rear lead engineering and incorporated the qualitative analysis and experts' evaluation,Dapingzi site scheme is recommended.