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    • 4. 发明授权
    • Frost damage proofed pile
    • 霜冻破坏桩
    • US4585681A
    • 1986-04-29
    • US624750
    • 1984-06-26
    • Kenji KideraShigeru NakagawaTakashi TakedaKatsumi OmoriToshiyuki Okuma
    • Kenji KideraShigeru NakagawaTakashi TakedaKatsumi OmoriToshiyuki Okuma
    • E02D5/60
    • E02D5/60Y10T428/1386Y10T428/139Y10T428/1393
    • A frost damage proofed pile for installment in a frigid district where the pile is subjected to a freezing and frost heaving force, such as permanently or seasonally frozen soil terrain. A tubular sheath member is fitted over the pile surface and has a length longer than the thickness of an active or seasonally frozen soil layer of the terrain in which the pile is installed. At least a portion of said length of the pile is formed as an extensible section, and at least the lower end of said sheath member is secured to the pile at or below a position corresponding to the bottom region of said active or seasonally frozen soil layer. A fluid material is filled in a space defined between the pile and the sheath member. The frost heaving force caused to exist upon freezing of the active or seasonally frozen soil layer as well as negative friction caused to exist in summer are inhibited from affecting the pile due to sliding of the sheath member relative to the pile.
    • 冻结防冻桩,用于安装在寒冷地带,其中桩受到冻结和冻胀力,例如永久或季节性冻土土地。 管状护套构件安装在桩表面上,其长度长于安装桩的地形的活动或季节性冻结的土壤层的厚度。 所述桩的所述长度的至少一部分形成为可延伸部分,并且所述护套构件的至少下端固定到桩对应于所述活动或季节性冷冻土层的底部区域的位置处 。 流体材料填充在在桩和护套构件之间限定的空间中。 由于鞘部件相对于桩的滑动,抑制了活动或季节性冻土层冻结后产生的霜冻力以及夏季存在的负摩擦力,影响桩的影响。