支撑体系应满足刚度与稳定性的要求，底部支承在可靠的基层上，浇筑过程中不得下沉。
The supporting system shall meet the requirements for rigidity and stability. The bottom shall stand on reliable base surface and shall not sink during concrete pouring.
计算时，底部弹性支承在各纵梁上，可求得结构的横向受力与弹性支承反力。
The bottom structure is supported by every longitudinal beam in orientation calculation, and then the orientation force and elasticity supporting force is obtained.
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