发明名称 |
METHOD OF SCREW-LIKE PILE BOTTOM SCREWING DOWN |
摘要 |
FIELD: construction of pile foundations for civil and industrial structures. SUBSTANCE: method involves putting pile bottom having cup with square or polyhedral cross section and connected with removable metal tube on soil surface in planned point; fixing removable metal tube at the angle of alpha to soil surface; passing screwing mechanism formed as power couple of reciprocating hydraulic jacks hung on vehicle through inner gripping sleeve; switching on forward motion regime of one hydraulic jack and reverse motion regime of another hydraulic jack; bringing removable metal tube into rotation in clockwise or counter-clockwise direction; imparting rotational motion to screw-like ferroconcrete pile bottom; feeding lubricating clay pulp beneath sharpened pile bottom end for friction reduction between pile bottom and soil; inserting pile bottom into removable metal tube up to stop; removing metal tube; putting hose of pulp- feeding device into space between pile and soil up to pile lower mark; supplying sand pulp by hose up to full filling of space between pile and soil and pulp rise to soil surface; removing hose without stopping of pulp supply; stopping sand pulp supply; repeating above processes with new pile. EFFECT: increased labor productivity by mechanical aid applying; increased bearing strength. 6 dwg
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申请公布号 |
RU2225478(C2) |
申请公布日期 |
2004.03.10 |
申请号 |
RU20010122057 |
申请日期 |
2001.08.06 |
申请人 |
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发明人 |
NEZHDANOV K.K.;TUMANOV V.A.;NEZHDANOV A.K.;VERZHBITSKIJ A.V. |
分类号 |
E02D7/22 |
主分类号 |
E02D7/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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