Large space frame antique city wall structure

A large space frame antique city wall structure comprises an external envelope structure and a frame inside a city wall. The frame inside the city wall comprises frame columns and a frame beam, wherein the frame columns are placed on two sides of the frame, the frame beam is placed on the frame columns in an erecting mode, and the interior defined by the frame columns and the frame beam is in a rectangular shape. The external envelope structure is a combined city wall of a lining city wall layer and a city wall brick layer. The inner plane of the lining city wall layer is closely attached to the frame columns and a masonry construction outside the frame beam. The lining city wall layer is connected with the frame columns through Rachel reinforcements, the lining city wall layer is connected with the fame beam through Rachel reinforcements, and the outer side of the lining city wall layer is connected with the city wall brick layer in a meshed mode. At least one stretching cross connecting joint is arranged every ten layers of interior bricks of the city wall brick layer and is connected with the lining city wall layer in a meshed mode. The Rachel reinforcements can be U-shaped Rachel pieces or rectangular Rachel pieces or inserting hole Rachel reinforcements. The large space frame antique city wall structure can solve the problem that the cost of a traditional ancient city wall construction method is high, wherein the traditional ancient city wall renovating method is that reinforced concrete city wallboard structures are placed on two outer sides of a trapezoid frame structure, and city wall bricks are built outside the reinforced concrete city wallboard structures.