PROBLEM TO BE SOLVED: To provide a means of improving the load bearing performance of a lawn protection member made from an upper frame and a lower frame.SOLUTION: A plant protection member is made from a lower frame laid on a base and an upper frame placed on the lower frame, the lower frame is made from a tread pressure part and a percolation part, the tread part is a concrete column inserted so the upper part thereof protrudes from a container-like structure which stands vertically and is arranged like a mesh, the protruding part of the concrete column is formed to be smaller than the lower part, each container-like structure is connected therebetween by a rib, and the percolation part is the space between a container-like structure and a container-like structure, the upper frame is made of the tread pressure part and the percolation part, the tread pressure part is made from a flank extending down from a flat plate and the edge of the flat plate, the flat plate has a hole part in the central part, the protruding part of the concrete column of the lower frame protrudes through the hole part, the flat plate suppresses the detachment of an object from the concrete column, each flat plate is connected by a rib, the percolation part is the space between the flat plate and the flat plate and the plant protection device is made from the upper frame placed on the lower frame.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】本発明は、上部枠と下部枠からなる芝生保護材の耐荷重性能を改善する手段の提供にある。【解決手段】基盤上に敷設する下部枠と下部枠上に載置される上部枠からなる植物保護材にあって、下部枠は踏圧部と透水部からなり踏圧部は網目状に配置された垂直に立ち上がる容器状物内にその上部が突出するように挿入されたコンクリー柱で、当該コンクリート柱の突出部は下部よりより小さく形成され、各容器状物間はリブにて連結され、透水部は容器状物と容器状物の間の空間であり、上部枠は踏圧部と透水部からなり、踏圧部は平板と平板の縁部から下方に延びる側面からなり、平板の中心部に孔部を有し、当該孔部より下部枠のコンクリート柱の突出部が突出し、平板がコンクリート柱の状物からの離脱を抑え各平板はリブにて連結され、透水部は前記平板と平板の間の空間であり、下部枠上に上部枠を載置した植物保護材である。【選択図】図4
