The practicality space analysis method is suggested according to structure endure force character of large rectangle aqueduct with multi-longitudinal beams, thus making the complicated space structure calculation decompose into two related plane problems.

• 摘要根据大型多纵梁矩形渡槽槽身结构及其受力特点，提出了实用空间分析法，使复杂的空间结构计算分离成相互联系的两个平面问题。