长螺旋搅拌压灌cfg异型复合桩

Long-auger mixing cast-with-pressure CFG special-shaped composite pile

Abstract

一种长螺旋搅拌压灌CFG异型复合桩,由CFG异型桩体构成,在该CFG异型桩体的表面设有数个轴向的凸棱。所述的凸棱沿外周面均布。该CFG异型桩体设在水泥土搅拌桩的轴心。在该水泥土搅拌桩的外围包覆有搅拌桩渗透层。本实用新型的有益效果是:该CFG异型桩的表面有数个轴向的凸棱,扩大了与外围水泥土搅拌桩的接触面积,大大提高了侧面摩擦阻力,使其单桩承载力大大提高。由于CFG异型桩的特殊截面结构,适合于采用长螺旋与搅拌复合的方法进行施工。这样,可以利用长螺旋钻具克服硬土层的优点,结合搅拌桩廉价且搅拌均匀可控的优势,使得施工变得容易高效,质量易于控制,成本大大降低。
A long-auger mixing cast-with-pressure CFG special-shaped composite pile consists of a CFG special-shaped pile body. A plurality of axial ribs are arranged on the surface of the CFG special-shaped pile body and distributed uniformly along the external circumference, the CFG special-shaped pile body is arranged at the axis center of a cement mixing pile, and a mixing pile permeable layer is coated on the periphery of the cement mixing pile. The long-auger mixing cast-with-pressure CFG special-shaped composite pile has the advantages that the axial ribs arranged on the surface of the CFG special-shaped pile expand area contacting with the cement mixing pile on the periphery, increase side friction resistance greatly and strengthen single-pile bearing capacity. Due to the special section structure of the CFG special-shaped pile, the composite pile is suitable for construction through the method of long-auger drilling and mixing. By the aid of the advantage that long auger drills can drill the hardpan and the advantages of low cost and uniform and controllable mixing of mixing piles, the composite pile can lead construction to be easy and high-efficient, lead construction quality to be controlled easily and reduce cost greatly.

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Cited By (4)

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    CN-102619218-AAugust 01, 2012中铁第四勘察设计院集团有限公司Back-insert steel reinforcement cage cement-flyash-gravel pile and pile-forming method thereof
    CN-102619218-BSeptember 30, 2015中铁第四勘察设计院集团有限公司后插钢筋笼水泥粉煤灰碎石桩及其成桩方法
    CN-103015430-AApril 03, 2013北京建材地质工程公司, 中冶地勘岩土工程有限责任公司, 北京城建科技促进会Long auger pressure filling steel reinforced cement-soil pile foundation pit water-resisting and supporting method
    CN-103061328-AApril 24, 2013方泰建设集团有限公司, 新宇建设有限公司一种带砂墙翼板的后注浆碎石桩及施工方法