Modeling curtain wall without bent and twisted keels

A modeling curtain wall without bent and twisted keels comprises cross beams, stand columns and arc-shaped splicing assemblies. The arc-shaped splicing assembly is installed at the upper end and/or the lower end of the cross beam, and the left end and the right end of the arc-shaped splicing assembly are fixed to the stand columns correspondingly. The arc-shaped splicing assembly comprises a plurality of aluminum alloy sections, and each aluminum alloy section comprises a first end face, a second end face, a third end face and a fourth end face. The aluminum alloy section is fixed to the cross beam through the framing nails, the two ends of the first end face are each provided with a clamping protrusion, the two ends of the third end face are each provided with a clamping concave, a notch is defined by the two clamping concave and the third end face, and the clamping protrusions can be clamped into the notch; an aluminum alloy glass clamping code is arranged on the outer side of the aluminum alloy profile, an