Frame structure with double-deformation energy absorption effect

The invention provides a frame structure with a double-deformation energy absorption effect. The frame structure comprises a front longitudinal beam front part (2F) which comprises a front equal-section part (11) and a rear variable-section part (12) used for transmitting impact load from the front equal-section part (11). The frame structure is characterized in that the equal-section part (11) ofthe front longitudinal beam front part (2F) is symmetrically provided with induction grooves (7), first reinforcing ribs (8) cross over the tops of the induction grooves (7), second reinforcing ribs(9) symmetrically cross over the front longitudinal beam front part (2F), one end of each second reinforcing rib (9) is fixedly connected with the equal-section part (11), and the other end of each second reinforcing rib (9) is fixedly connected with the variable-section part (12). The induction grooves (7) are used for inducing the front longitudinal beam front part (2F) to be subjected to superimposed contraction plastic