均布荷载下一端固定的文克尔地基梁的基底压力特性及其工程意义

THE FEATURE OF FOUNDATION PRESSURE ON WINKLER FOUNDATION-BEAM WITH ONE FIXED END AND ITS APPLICATION

  • 摘要: 利用文克尔局部弹性地基模型,求解均布荷载作用下一端固定的弹性地基梁的基底压力;并发现其规律:在距离固定端的一定范围内,地基梁的基底压力分布具有随着与固定端的距离增加而增大、且存在一个最大值。基于这个特点,提出并分析将一端固定的文克尔地基梁应用于工程的可能性,以解决如“桥头跳车”等由于建筑地基差异沉降而导致的工程缺陷问题。

     

    Abstract: With Winkler foundation model,the foundation pressure on Winkler foundation-beam with one fixed end and subject to evenly distributed loading is calculated.It is found that the foundation pressure increases with the increase in the distance to the fixed end,but there exists a maximum.Based on the finding,the application possibilities of the foundation-beam to practical problems is presented.It bring an issue to avoid engineering defect which resulted from the subsidence differences between two adjacent structures,example of bump at the end of bridges.

     

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