大型钢筋混凝土多纵梁渡槽结构设计方法的研究

On the design method for large reinforced concrete aqueduct with multi longitudinal beam

本文结合南水北调河南段双洎河钢筋混凝土多纵梁渡槽结构设计，提出了采用改进的空间刚架结构方法计算结构设计控制截面的内力进行结构极限承载力配筋设计，采用三维混凝土有限元分析验算结构正常使用状态下截面应力状态的结构设计方法．利用１：５钢筋混凝土仿真试验模型实测数据对比验证结果表明，上述设计方法是可行的．

In this paper, a modified 3 D rigid frame method for calculation of internal force in the main section of the beam is proposed. The stress distribution is checked using 3 D concrete finite element method. The calculation result is in good agreement with the experimental data.