The steel structure is equipped with n.4 steel wheels running on temporary rails (50% of the wheels are motorised with hydraulic motors).

• 刚结构上设4个钢轮在临时钢轨上行驶，其中2个用液压马达驱动，临时钢轨在已经浇注完的结构内和即将浇注的混凝土箱梁内钢筋上设的混凝土垫块上安装。