Inverted steel platform foundation structure

The utility model discloses a top-down steel platform foundation structure which comprises a steel pipe support, a column top cover plate and a cross-shaped steel beam. The column top cover plate is fixedly arranged at the top of the steel pipe support; the number of the steel pipe supports is four, and the steel pipe supports are fixedly arranged on the lower flange of the cross-shaped steel beam respectively. The device is reasonable in structural design and more stable; the labor intensity of constructors can be reduced, the construction period is shortened, and the cost of a large project part is saved; the problem that the free height of the tower crane cannot be met due to narrow site and dense surrounding buildings is solved. 本实用新型公开了一种逆作钢平台基础结构，包括钢管支撑、柱顶盖板、十字钢梁；所述柱顶盖板固定设置在钢管支撑顶部；所述钢管支撑的数量是四个，分别固定设置于十字钢梁的下翼缘。本申请结构设计合理，更加稳定；可以节降低施工人员劳动强度，缩短施工工期，节约大工程部分成本费用；解决场地狭小、周围建筑物密集无法满足塔吊自由高度的难题。