In view of the characteristics of a river channel including the lack of flood control cross section width,the reservation for ship berthing function,thick silt layer foundation,and limited construction area,we adopt the double-row piles structure with hard cutting and interlocking based on the comparison.The engineering practice proves that the new structural type is applicable,because it is well adaptable to the soft soil foundation and constructed on limited construction land area without river breakage and large excavation.Meanwhile,it provides a guidance for similar projects.