Permanent GFRP material formwork and corresponding GFRP-concrete combined beam thereof

The utility model provides a permanent GFRP (Glass Fiber Reinforced Plastic) material formwork and a corresponding GFRP-concrete combined beam of the permanent GFRP material formwork. The permanent GFRP material formwork comprises GFRP box-type structures which are connected to a GFRP grid plate; at least one column of GFRP box-type structures is arranged under the GFRP grid plate; the GFRP grid plate is separated from the GFRP box-type structures by use of grid base plates. The formwork is further combined with concrete to obtain the combined beam. In order to solve the problems that traditional temporary formworks need to be removed, the formworks are incapable of providing structural functions and the construction period is long, the concrete of the upper part is restrained in a three-direction pressed state by use of the GFRP in the formwork, and therefore, the strength of the concrete is improved, and not only is the purpose of improving the bearing capacity of the GFRP-concrete combined beam achieved, but also the purposes of saving the cost and shortening construction period are achieved.