Jig frame for steel cylinder inverted installation and jacking construction and construction method

The invention discloses a jig frame for steel cylinder inverted installation and jacking construction. A jig frame body comprises two sets of fixed trusses, wherein one set of the fixed trusses is symmetrically arranged up and down, and the other set of the fixed trusses is symmetrically arranged left and right. Each set of the fixed trusses is connected with a moving truss through bolts to enclose a polygonal base. When a steel cylinder is assembled, hydraulic jacking bases are equidistantly arranged on the upper surface of the base along the circumference in a distributed mode. When the steel cylinder is moved, each of the fixed trusses is provided with four temporary buttress mechanisms equidistantly along an arc. The jig frame has the advantages of being stable and safe in structure, being simple in process, being low in cost, being flexible and the like. 本发明公开了一种针对钢圆筒倒装顶升施工的胎架，所述胎架本体包括2组固定桁架，其中一组所述固定桁架上下对称设置，另一组所述固定桁架左右对称设置，每组所述固定桁架通过螺栓与移动桁架连接围成多边形的基座，当拼装钢圆筒时，所述基座上表面沿圆周等距分布设置有液压顶底座；当移动钢圆筒时，每个所述固定桁架上沿弧线等距