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为给水平荷载作用下扩底楔形桩承载力计算提供理论方法,基于常规等截面桩p-y曲线法,考虑纵向截面形式的变化,建立了水平荷载作用下扩底楔形桩的简化理论计算方法;通过与2个模型试验及其他理论计算结果的对比分析,验证了所建立理论模型的准确性和可靠性;分析了扩大头直径、楔形角、桩长、桩体弹性模量以及水平向荷载-位移等级等因素对扩底楔形桩水平向承载力特性的影响规律。结果表明:所建立的简单理论计算方法可以有效计算水平荷载作用下扩底楔形桩的承载力特性,也可以推广应用于其他纵向截面异形桩的水平向承载力设计计算中。
In order to provide a theoretical method for the calculation of bearing capacity of wedged piles under horizontal loads, a simplified theoretical calculation method of wedged piles with enlarged bottom under horizontal loads was established based on the py curve method of conventional equal-sectional piles and considering the changes of longitudinal section forms. Compared with the results of two model tests and other theoretical calculations, the accuracy and reliability of the theoretical model are verified. The effects of expanding head diameter, wedge angle, pile length, pile elastic modulus and horizontal load-displacement Grade and other factors on the horizontal bearing capacity of wedged piles. The results show that the simple theoretical calculation method can effectively calculate the bearing capacity of wedged piles under horizontal load and can also be widely applied in the design and calculation of horizontal bearing capacity of other shaped piles with different longitudinal sections.