铰缝钢筋构造的改进与完善研究

The Improvement and Perfection of the Hinge Joints Reinforced Structure

小跨径桥梁常用装配式空心板,铰缝是其重要组成构件,相比传统铰缝构造钢筋布置形式,提出一种新型形式,并构建新、旧钢筋布置铰缝有限元模型,进行抗剪对比分析,证实了新的布置形式对铰缝抗剪有较大提高。在此基础上,对新型钢筋布置形式进行了参数优化设计,提出钢筋布置的最佳倾斜角度和距顶部距离。

The hinge joints are the important component of Assembly type hollow plate with small span bridge. Compared with the traditional hinge joints structure reinforcement layout,the paper proposes a new form which builds the new and old steel hinge joints arranged finite element models with comparative analysis of shear resistance,so as to confirm that the new arrangement form has a great improvement on the shear resistance of the hinge joints. On this basis,by designing optimal parameters for new forms of reinforcement layout,this paper puts forward the arrangement of the best angle and the top distance.