文辉大桥索塔变形监测

为确保文辉大桥的施工精度和结构安全,建立了施工控制测量网,采用全站仪对索塔位移进行了监测。揭示了索塔在不平衡索力和日照温差等因素作用下的变形规律,指出其位移主要是沿桥梁轴线方向。因此,在施工中应考虑该位移对主梁线形和斜拉索长度的影响。

Deformation Monitoring of Cable Towers of Wenhui Bridge

To ensure the construction precision and structure safety of the Wenhui Bridge, engineers built a construction control measure network and adopted total stations to monitor cable tower offsets. In this article, authors present the deformation rule of cable towers under some factors such as unbalanced cable forces and sunshine temperature difference and so force, and state their main offset direction is along the bridge axis. So engineers should take the influence of this offset on the line shape of main beams and lengths of stay cables in their consideration in construction process.