If the cushion in the main beam, in addition to the main beamcamber, the rest of the project can also be checked, but also can check the installation quality of the operating mechanism of the cart.
如是垫在主梁下，则除主梁上拱度一项外，其余项目也都可以检查，同时还可以检查大车运行机构的安装质量。
2
A beam as the base of rail must have strong strength, rigidity, small subsequent creep camber, and excellent durability as well as rapid in const ruction.
桥梁不仅应有足够的强度、刚度以及小的后期徐变变形，同时还应具有良好的耐久性，并且要求实现快速施工。
3
Then calculating methods on construction camber of cast-in-place beam scaffold and setting methods are introduced.