Pile foundation negative friction treatment system and construction method: Fid-Bau Portal

Pile foundation negative friction treatment system and construction method

JIA YUANLIN / LI SHENGJIE

The invention relates to a pile foundation negative friction treatment system and a construction method. The treatment system comprises a precast pile (1), the outer side of the precast pile (1) is sleeved with a degradable plastic sleeve (2), the degradable plastic sleeve (2) is located above the neutral point of the precast pile (1), and the outer side of the degradable plastic sleeve (2) is sleeved with a protective sleeve (3). The construction method comprises the following steps of turning on a pile driver, sinking the precast pile (1) sleeved with the degradable plastic sleeve (2) and the protective sleeve (3) to a pre-designed pile foundation depth in a static pressure or vibration mode, then pulling out the protective sleeve (3), and leaving the precast pile (1) sleeved with the degradable plastic sleeve (2) in a foundation. Compared with the prior art, the system and method have the advantages of being simple in installation, convenient in connection, quick in construction, low in manufacturing cost, reliable in quality and the like.

本发明涉及一种桩基负摩阻处理体系及施工方法，处理体系包括预制桩(1)，所述的预制桩(1)外侧套设有可降解塑料套管(2)，可降解塑料套管(2)位于预制桩(1)的中性点以上，且可降解塑料套管(2)外侧套设有保护套管(3)。施工方法包括启用打桩机，将套设有可降解塑料套管(2)和保护套管(3)的预制桩(1)在静压力或震动的方式下沉入预先设计的桩基深度，而后再将保护套管(3)拔出，将套设有可降解塑料套管(2)的预制桩(1)留在地基中。与现有技术相比，本发明具有安装简单，连接方便，施工快速，造价低廉，质量可靠等优点。

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