漕河渡槽预应力次生弯矩计算

摘要

The secondary be nding moment from three-dimension prestressing is firstly proposed to calculate the prestress in the Caohe aqueduct of Middle Route Project of S-N water diversion. The calculation of the secondary bending moment and it’s the impact on the structure of the aqueduct body is discussed with the design examples in the Caohe aqueduct in this paper. The experience summarized in this paper can offer help and reference in calculating three-dimension prestressing in the large aqueduct.%南水北调中线漕河渡槽，首次将三向预应力次生弯矩影响考虑到结构设计当中，本文结合漕河渡槽槽身设计实例，对次生弯矩的计算及影响分析进行了论述，并总结了经验，为大型渡槽多向预应力设计提供了借鉴和参考。