摘要
提出一种新的自平衡试验数据简化等效转换方法,它考虑了自平衡加载方式下底层荷载箱以上桩体发生的压缩量及其转换后桩顶加载方式下的压缩量,对等效转换的桩顶位移进行附加压缩量修正,并给出了单层及双层荷载箱的计算公式;算例对比分析表明,这种方法比其他他简化转换方法确定的极限承载更准确,而且有更高的等效转换曲线相似性。
A new simplified method of equivalent conversion from self-balanced test data to traditional load test data is put forward, which considers the compression of the pile section above bottom load box under the condition of self-balanced test and its compression under the condition of traditional load test after equivalent conversion. The top movement of equivalent conversion is modified by additional compression, and the computation formula for one cell and double cells is provided. Based on the computation examples, the ultimate bearing capacity determined by this method is more accurate than other methods and the equivalent conversion curve is more similar to the exact solution.
出处
《交通科技》
2009年第5期13-16,共4页
Transportation Science & Technology
关键词
自平衡
等效转换
压缩量
极限承载力
相关系数
self-balanced equivalent
conversion
compression
ultimate bearing capacity
correlation factor
