土工基础

土工基础 ›› 2025, Vol. 39 ›› Issue (5): 775-762.

• 专题论述 • 上一篇    下一篇

基于Winkler模型的履带梁非线性接地比压研究

陈斌1，莫品强2,3，刘尧2，李佳诚2，李裕成2，刘清楠2   

  1.  (1.中冶武勘工程技术有限公司，武汉 430080；2.中国矿业大学 深地工程智能建造与健康运维全国重点实验室 力学与土木工程学院，江苏徐州 221116；3.中国矿业大学深圳研究院，广东深圳 518057）
  • 收稿日期:2025-09-02 修回日期:2025-09-23 出版日期:2025-10-31 发布日期:2025-10-30
  • 作者简介:陈斌（1988-），男，高工，研究方向为岩土工程领域的研究与工程应用。
  • 基金资助:
    国家自然科学基金(52178374,52578447)；广东省基础与应用基础研究基金(2024A1515011552)；江苏省自然科学基金资助项目(BK20242090)

Nonlinear Contact Pressure of Crawler Beams based on Winkler Model

CHEN Bin1, MO Pinqiang2,3, LIU Yao2, LI Jiacheng2, LI Yucheng2, LIU Qingnan2   

  1. (1.WSGRI Engineering & Surveying Incorporation Limited, Wuhan 430080;
    2.State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116;
    3.Shenzhen Research Institute, China University of Mining and Technology, Shenzhen, 518057)
  • Received:2025-09-02 Revised:2025-09-23 Online:2025-10-31 Published:2025-10-30

摘要： 随着大型工程建设中对重型装备地基安全性要求的不断提高，履带起重机作业时精确计算接地比压对地基稳定性至关重要。研究基于Winkler弹性地基理论，通过分段拟合p-y曲线构建弹塑性地基反力系数，并建立了履带梁非线性接地比压计算模型。工程实测验证表明：履带起重机起升载荷增大时，荷载偏心使偏心侧接地比压显著增大，诱发地基塑性变形导致沉降剧增，非偏心侧因梁土刚度差异可能出现脱空；回转角度增加过程中，左履带左端沉降持续降低而右端先升后降，右履带左端沉降先降后升且右端持续上升，沉降分布严格遵循履带中点对称规律，系统揭示偏心荷载下地基位移响应特征。该模型为履带起重机地基设计提供可靠理论支撑。

关键词: 履带梁, 非线性接地比压, Winkler弹性地基, 传力机理

Abstract: Following the growing demand for foundation safety requirements of heavy-duty equipment in large-scale engineering construction, the precise prediction of the ground pressure is crucial for the foundation stability during crawler crane operations. Based on the Winkler elastic foundation theory, this study constructs an elastoplastic foundation reaction coefficient through piecewise fitting of p-y curves and establishes a nonlinear ground pressure prediction model for track beams. Predictions and engineering measurements demonstrate the following: As lifting loads of a crawler crane increase, the load eccentricity significantly elevates the ground pressure on the eccentric side, inducing the plastic deformation and the subsequent dramatic settlement, while the non-eccentric side may experience detachment due to the stiffness differences between the track beam and the soil. During the slewing angle adjustment, the settlement at the left end of the left track continuously decreases, while the right end first increases then decreases; conversely, the left end of the right track initially decreases then increases, with the right end exhibiting sustained uplift. Settlement distributions strictly follow a symmetrical pattern around the track midpoint, systematically revealing foundation displacement characteristics under the eccentric loading. This model provides a reliable theoretical basis for the crawler crane foundation design.

Key words: Crawler Beams, Nonlinear Contact Pressure, Winkler Elastic Foundation, Force Transmission Mechanism

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