针对大型内河码头建设面临的复杂水文和地质条件，基于结构受力最优原理和工程造价最省的思路，提出了“空间三角形框架墩+水平剪刀撑”新型大跨度内河架空直立式码头结构。采用单位力法对这种码头结构型式可能出现的荷载工况进行了有限元计算，并采用 MATLAB软件编程对计算结果进行了分析，得到了控制各构件内力的最不利作用效应组合及对应的内力值，分析了该码头结构的构造特点和稳定性。将该码头结构型式与现有内河码头结构型式进行了比较，结果表明，新型结构的构造简洁、受力合理、水下工程量小、经济性好。%Aiming at the complicated hydrological and geological conditions of large wharf construction in inland rivers, based on the concept of optimized mechanical property and smallest economical cost, we put forward a new overhead vertical wharf for inland rivers of Three Gorges Reservoir, which has a formation of triangle frame piers and horizontal bridging. Using FEM, we analyze possible loading cases of the wharf structure by unit force method, and the calculation results are sorted out by Matlab. Based on these results, the most adverse combined loading effects and corresponding internal forces of each component are ob-tained, and further the structural characteristics and stability of the new wharf are analyzed and compared with conventional types, showing that the new wharf has advantages of simple formation, reasonable force condition, smaller construction quantity as well as better economical effect.
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