宽幅钢板叠合梁设计与分析计算

Design and Analysisof Wide Steel Plate Concrete Composite Beam

以珠海鸡啼门大桥跨河堤引桥为例,介绍钢板-混凝土桥组合梁桥的设计思路,探讨防止钢混组合梁负弯矩区混凝土桥面板开裂的措施。结果表明,负弯矩区选用高性能的混凝土,同时采用顶升落梁的技术,在不施加预应力的前提下,可有效控制受拉区混凝土的裂缝产生。

Taking Zhuhai Bridge across the river bridge Jiti door as an example,the design concept of steel plate concrete bridge composite beam bridge is introduced.The measures for preventing concrete bridge deck from cracking in steel-concrete composite beam in negative bending moment are discussed.The results show that high performance concrete is used in the negative bending moment.At the same time,the technique of jacking and falling beams is adopted.Without the application of prestressing force,the concrete cracks in the tensile zone can be effectively controlled.