Yet The present invention relates a simple configuration, conventional products as well as cost and size, or has a weight, driving work is easily possible, deer in the sheet-like material in the soft ground of a durable to provide a fixture for equal. A body 1 consisting of the first rod-like body 15, one end 2 of the main body portion has a pointed shape portion 3, the other end 4 of the body portion, the tip portion from P2 by a predetermined length S, at the site which has moved to the central portion M direction of the main body, the second rod-like body 16 is engaged in a direction perpendicular to the body portion, and, the surface between the two ends of the body portion the portion Q, at least one pulling resistance portion 10 is provided, further, the inner space portion 11 of the pulling resistance portion is maintained in an open state, further the second rod-like body in contact with the planar body portion 17 It is provided.FIELD 1【課題】簡易な構成でありながら、従来製品と同様のコストや寸法、或いは重量を有し、打ち込み作業が容易に出来、然も耐久性のある軟弱性地盤に於けるシート状物等用の固定具を提供する。【解決手段】第1の棒状体15からなる本体部1、本体部の一方の端部2は尖頭形状部3を有し、本体部の他方の端部4は、先端部P2から所定の長さSだけ、本体部の中央部M方向に移動した部位において、本体部と直交する方向に第2の棒状体16が係合され、且つ、本体部の両端部間の表面部分Qには、少なくとも一つの引き抜き抵抗部10が設けられ、更に、引き抜き抵抗部の内部空間部11は、開放状態に維持され、さらに第2の棒状体と接触して板状体部17が設けられている。【選択図】図1