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Uplift pile with negative Poisson's ratio effect suitable for liquefaction site and construction method
According to the uplift pile with the negative Poisson's ratio effect and suitable for the liquefaction site and the construction method of the uplift pile, resistance can be reduced when the uplift pile is driven into the ground through the uplift pile with the bottom of a cone structure, and the effective sectional area of the pile body can be reduced through a hollow structure formed in the surface of the pile body; therefore, the acting area of the borne transverse force is reduced, transverse expansion when the pile body is axially pressed and transverse shrinkage when the pile body is pulled are reduced as much as possible, the anti-pulling fan blades on the cylindrical pile body are attached to the pile body in the initial state, transverse resistance cannot be increased when the anti-pulling pile is driven into the ground, and after the anti-pulling pile enters the ground, the anti-pulling fan blades on the cylindrical pile body are attached to the pile body in the initial state. The anti-pulling fan blades are controlled to be unfolded through the driving device, so that friction force in the horizontal direction is provided between the pile body and soil, and the anti-pulling performance of the anti-pulling pile is improved.
本发明公开了一种适用于液化场地具有负泊松比效应的抗拔桩及其施工方法，通过底部为椎体结构的抗拔桩能够在抗拔桩在打入地下时减少阻力，桩体表面开设的镂空结构能够减少桩体的有效截面积，从而降低了受到的横向力的作用面积，尽量减少桩体轴向受压时横向膨胀，受拉时横向收缩，而圆柱桩体上的抗拔扇叶初始状态下与桩体贴合，进而在抗拔桩打入地下时不会增加横向阻力，而在抗拔桩进入地下之后，通过驱动装置控制抗拔扇叶展开，进而提供给桩体与泥土之间水平方向的摩擦力，提高抗拔桩的抗拔性能。
Uplift pile with negative Poisson's ratio effect suitable for liquefaction site and construction method
According to the uplift pile with the negative Poisson's ratio effect and suitable for the liquefaction site and the construction method of the uplift pile, resistance can be reduced when the uplift pile is driven into the ground through the uplift pile with the bottom of a cone structure, and the effective sectional area of the pile body can be reduced through a hollow structure formed in the surface of the pile body; therefore, the acting area of the borne transverse force is reduced, transverse expansion when the pile body is axially pressed and transverse shrinkage when the pile body is pulled are reduced as much as possible, the anti-pulling fan blades on the cylindrical pile body are attached to the pile body in the initial state, transverse resistance cannot be increased when the anti-pulling pile is driven into the ground, and after the anti-pulling pile enters the ground, the anti-pulling fan blades on the cylindrical pile body are attached to the pile body in the initial state. The anti-pulling fan blades are controlled to be unfolded through the driving device, so that friction force in the horizontal direction is provided between the pile body and soil, and the anti-pulling performance of the anti-pulling pile is improved.
本发明公开了一种适用于液化场地具有负泊松比效应的抗拔桩及其施工方法，通过底部为椎体结构的抗拔桩能够在抗拔桩在打入地下时减少阻力，桩体表面开设的镂空结构能够减少桩体的有效截面积，从而降低了受到的横向力的作用面积，尽量减少桩体轴向受压时横向膨胀，受拉时横向收缩，而圆柱桩体上的抗拔扇叶初始状态下与桩体贴合，进而在抗拔桩打入地下时不会增加横向阻力，而在抗拔桩进入地下之后，通过驱动装置控制抗拔扇叶展开，进而提供给桩体与泥土之间水平方向的摩擦力，提高抗拔桩的抗拔性能。
Uplift pile with negative Poisson's ratio effect suitable for liquefaction site and construction method
适用于液化场地具有负泊松比效应的抗拔桩及施工方法
ZHOU YONGJIE (author) / ZHANG XINLEI (author) / SUN YUE (author) / JI ZHANPENG (author) / GAO HONGMEI (author) / WANG ZHIHUA (author) / SHEN ZHIFU (author) / LIU LU (author) / LIU XUANXUAN (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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