湛江海湾大桥索梁锚固结构足尺模型试验

为了深入研究锚拉板式索梁锚固结构的传力机理和应力分布规律，评估其安全性和可靠性，以湛江海湾大桥为工程背景，对锚拉板式索梁锚固结构进行了足尺模型试验，并与非线性有限元仿真结果进行了比较．研究表明：锚拉板与锚拉筒连接焊缝处应力水平较高，远离焊缝应力分布趋于均匀；结构整体受力合理，具有足够的安全储备，但局部存在应力集中，设计时应予以注意．

Full Scale Model Test on Cable-Girder Anchorage of Zhanjian Gulf Bridge

By taking Zhanjiang gulf bridge as the research object, a full scale model test for cable-girder anchorage, as the key part of bearing safety of cable-stayed bridges, was made to further investigate the mechanism of cable force transmission and the regularity of stress distribution to evaluate its security and reliability, and the experimental results were compared with 3-D nonlinear simulation ones based on FEM ( finite element method). The research shows that there exists a large concentration of stresses on welded lines between the tensile anchor plate and the anchor tube, but the distribution of stresses become uniform gradually far away from the welded lines. The cable-girder anchorage has well property and safety of load-bearing. However, the concentration of stresses in some components of the structure should be paid more attention to in the design.