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21. 发明专利

JPS63521A INSERTION WORK OF STEEL MATERIAL OF SOIL-MORTAR COLUMN-LINE PILE 失效
公开(公告)号：JPS63521A
公开(公告)日：1988-01-05
申请号：JP14217386
申请日：1986-06-18
申请人： TOKKI KOGYO KK
发明人： OCHI NAGATOMO
IPC分类号： E02D5/18 , E02D5/04 , E02D5/20
摘要： PURPOSE:To prevent damage to the pit wall by a method in which a long I-shaped steel material having a tip with sloped face on its lower end is hung down between rollers under ground for correcting its warping and vertically inserted into the excavated pit when being pulled out of a casing. CONSTITUTION:A tip part 2 with an inclined plate 2a is attached to the lower end of along I-shaped steel material 1 and hung down between rollers 4 in a casing 3 provided in an excavated pit to the bottom of the pit for correcting the warping of the steel material 1. A rectangular flat scale 6 of a given length, having angular steels 6a on its four corners, is vertically penetrated into an excavated pit 5 for soil mortar column-line pile. The steel material 1 in the casing 3 is lifted up and moved to the pit 5, and the tip part 2 on the lower end is inserted into the scale 6, and the material 1is inserted into the pit 5. These processes are repeated to move it to the inserting position of the steel material. The steel material can thus be easily penetrated until the soil mortar hardens.

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