Modular greenhouse structure comprising at least one greenhouse module (1) made up of a plurality of frames (2) intended to be anchored to the ground, being aligned apart from each other with respect to a longitudinal axis "L", presenting two frames ends (3) (4) and a plurality of intermediate frames (5) arranged between both end frames (3) (4), and a roof cover supported by the plurality of frames (2), the greenhouse module being characterized in that understands. - frame braces (6) (7) arranged between an end frame (3) (4) and an adjacent intermediate frame (5A) (5B)； - roof braces (8) oriented transversely with respect to the plurality of frames (2) and linked to each of the intermediate frames (5) through auxiliary roof braces (9)； - at least one bracing (10) coupled between two adjacent frames of the plurality of frames (2)； - struts (11) with a lower end anchored to the ground and an upper end coupled to each of the end frames (3) (4)； - gantry structures (12) (14) linked through external braces (13) to the end frames (3) (4), and linked to the struts (11) through fixing means (13)； - a rotating shaft (16) coupled to the gantry structures (12) (14), and configured to be driven by actuating means (17)； and - a second cover (6A) that can be rolled up on the rotary axis (16) configured to allow air to enter the greenhouse module. (Machine-translation by Google Translate, not legally binding)Estructura modular para invernaderos que comprende al menos un módulo de invernadero (1) compuesto por una pluralidad de marcos (2) previstos para anclarse al suelo, estando alineadamente separados entre sí con respecto a un eje longitudinal "L", presentando dos marcos extremos (3) (4) y una pluralidad de marcos intermedios (5) dispuestos entre ambos marcos extremos (3) (4), y una cubierta de techo soportada por la pluralidad de marcos (2), estando el módulo de invernadero caracterizado porque comprende. - tirantes de marcos (6) (7) dispuestos entre un marco extremo (3) (4) y
