| 杨庆乐,屈福政,于志远,谢正义.考虑基础弹性的履带式起重机回转工况分析[J].,2019,59(2):146-153 |
| 考虑基础弹性的履带式起重机回转工况分析 |
| Analysis of swinging loads operating condition for crawler crane mounted on elastic foundation |
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| DOI：10.7511/dllgxb201902006 |
| 中文关键词: 基础变形 Winkler地基模型 臂架破坏 刚柔耦合作用 倾翻稳定性 |
| 英文关键词: deformation of foundation Winkler foundation model boom failure rigid-flexible coupling tipping stability |
| 基金项目:“八六三”国家高技术研究发展计划资助项目(2012AA041800)；国家自然科学基金资助项目(51275070). |
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| 中文摘要: |
| 针对回转工况下基础变形导致履带式起重机侧向荷载增大甚至引发臂架破坏或倾翻事故的问题，基于Winkler地基模型，考虑起重机机械结构与弹性基础的耦合作用，应用Adams软件建立多体刚柔耦合作用模型，通过实验数据验证模型的正确性．进一步分析不同的地基系数、回转速度以及起升高度对起重机臂架危险截面应力与整机倾翻稳定性的影响，得到特定基础条件下满足施工要求的工作参数，为履带式起重机的设计以及安全使用提供了参考． |
| 英文摘要: |
| The deformation of foundation during swinging loads operation causes the increasing of crawler crane side loading or even leads to the boom failure or tipping failure. To solve this problem, based on Winkler foundation model, a multibody rigid-flexible coupling model is established considering the coupling of the crane mechanical structure and elastic foundation using Adams software. The model is verified by experimental data. Then the model is further used to analyze the influence of different foundation coefficients, swinging speeds and lifting heights on the critical cross section stress of the crane boom and the tipping stability in order to obtain operating parameters that can meet the requirements of construction for the given foundation conditions. The results will provide reference for the design and safe operation of crawler cranes. |
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