钢筋混凝土箱梁横向受力有效分布宽度的试验研究

Research on the effective distribution width of transverse force of reinforced concrete box beam

按约 1∶ 5的几何尺寸制作了钢筋混凝土单箱单室箱形梁试验模型 ,对多种工况下模型箱梁的横向内力分布及有效分布宽度进行了实际测定 ,并用有限元法对其内力分布予以详细分析。分析结果表明 ,按中国现有公路桥梁设计规范 ( JTJ0 2 3- 85)计算的箱梁顶板及翼缘板的横向受力有效分布宽度与实测结果相比 ,在有些情况下存在较大的出入。

In this paper, the author constructs a single-cell box beam model in a scale of one to five according to actual engineering, and makes a test of its transverse internal force distribution so as to analyse the deck's effective width. Futhermore,an outcome based on finite element analysis is presented in contrast. Both the experiment and finite element analysis indicates that there are many differences between actual structure and our current bridge code.