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A platform for research: civil engineering, architecture and urbanism
Variable-diameter pile foundation design method and variable-diameter pile foundation
The invention discloses a variable-diameter pile foundation design method and a variable-diameter pile foundation, and relates to the technical field of bridge engineering.The variable-diameter pile foundation design method comprises the steps that according to pile foundation bending moment distribution, the length from the pile foundation top to the bending moment zero point position serves as the first-stage pile foundation length; according to the top axial force of the previous-stage pile foundation, the length of the previous-stage pile foundation, the stress relation between the diameter of the previous-stage pile foundation and the top axial force of the next-stage pile foundation and the stress relation between the top axial force of the next-stage pile foundation, the diameter of the next-stage pile foundation and the allowable stress of the pile foundation concrete, the top axial force of the next-stage pile foundation and the diameter of the next-stage pile foundation are determined. The problems that in the prior art, a variable-diameter pile foundation is too conservative in the pile foundation size design process, so that the pile foundation size is large, material consumption is large, and cost is high are solved.
本发明公开了一种变直径桩基设计方法及变直径桩基，涉及桥梁工程技术领域，该变直径桩基设计方法包括：根据桩基弯矩分布，将桩基顶至弯矩零点位置长度作为第一级桩基长度；根据上一级桩基顶轴力、上一级桩基长度、上一级桩基直径与下一级桩基顶轴力的受力关系，以及下一级桩基顶轴力、下一级桩基直径和桩基混凝土容许应力的受力关系，确定下一级桩基顶轴力和下一级桩基直径。解决了现有技术中的变直径桩基存在桩基尺寸设计时过于保守导致桩基尺寸大，用料多，成本高的问题。
Variable-diameter pile foundation design method and variable-diameter pile foundation
The invention discloses a variable-diameter pile foundation design method and a variable-diameter pile foundation, and relates to the technical field of bridge engineering.The variable-diameter pile foundation design method comprises the steps that according to pile foundation bending moment distribution, the length from the pile foundation top to the bending moment zero point position serves as the first-stage pile foundation length; according to the top axial force of the previous-stage pile foundation, the length of the previous-stage pile foundation, the stress relation between the diameter of the previous-stage pile foundation and the top axial force of the next-stage pile foundation and the stress relation between the top axial force of the next-stage pile foundation, the diameter of the next-stage pile foundation and the allowable stress of the pile foundation concrete, the top axial force of the next-stage pile foundation and the diameter of the next-stage pile foundation are determined. The problems that in the prior art, a variable-diameter pile foundation is too conservative in the pile foundation size design process, so that the pile foundation size is large, material consumption is large, and cost is high are solved.
本发明公开了一种变直径桩基设计方法及变直径桩基，涉及桥梁工程技术领域，该变直径桩基设计方法包括：根据桩基弯矩分布，将桩基顶至弯矩零点位置长度作为第一级桩基长度；根据上一级桩基顶轴力、上一级桩基长度、上一级桩基直径与下一级桩基顶轴力的受力关系，以及下一级桩基顶轴力、下一级桩基直径和桩基混凝土容许应力的受力关系，确定下一级桩基顶轴力和下一级桩基直径。解决了现有技术中的变直径桩基存在桩基尺寸设计时过于保守导致桩基尺寸大，用料多，成本高的问题。
Variable-diameter pile foundation design method and variable-diameter pile foundation
一种变直径桩基设计方法及变直径桩基
ZHANG QIANG (author) / LIU HANSHUN (author) / ZHENG HAN (author) / WANG DONGHUI (author) / WEN PO (author) / WANG SHIGANG (author) / WANG FAN (author) / QU AIPING (author) / ZOU MINYONG (author)
2023-12-29
Patent
Electronic Resource
Chinese
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