城市立交匝道小半径曲线钢混叠合梁设计关键技术

Key Design Technique for Small Radius Curved Steel-concrete Composite Beam of Urban Interchange Ramp

以具体的城市立交匝道桥工程为背景,结合了其曲率半径小、跨度较大、纵坡较大的特点,采用MIDAS/Civil软件建立模型进行计算分析,介绍了城市立交匝道常用的小半径曲线钢混叠合梁设计中的关键技术,突出了小半径钢混叠合梁的设计特点,为钢混叠合梁的发展应用提供了更广阔的空间和前景。

Based on the engineering background of an urban interchange ramp, and according to its characteristics of small curvature radius, longer span and larger longitudinal slope, the MIDAS/Civil software is used to establish the model for the calculation and analysis. This paper introduces the key design technique of small radius curved steel-concrete composite beam commonly used for the urban interchange ramps. This technique highlights the design characteristics of small radius steel-concrete composite beam and provides the wider space and prospect for the development and application of steel-concrete composite beam.