| 摘要 |
There is disclosed an underpinning pile to provide an efficient, simple and sure method in driving and lifting the foundation and at the same time securing the direct transference of preload without further loss of preload from the building into the newly completed driven pile. A pile anchor head ( 11 ) is provided that receives a pile ( 12 ) and is provided with a lifting means ( 13 ). The pile anchor head ( 11 ) and lifting means ( 13 ) receive the building load and transfers it to the pile ( 12 ), which allows practically any kind of material and shape of pile ( 12 ) to be used.
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