锚桩对静载荷试验成果的影响分析

考虑锚桩与试桩的共同作用,采用弹性理论讨论在静载荷试验中选取不同锚桩方案对试验结果的影响。分析结果显示:锚桩会对试桩极限承载力产生影响,采用原始测试数据分析所得出的试桩极限承载力偏于危险,误差量随着桩顶荷载的增大而增大,随着锚桩与试桩间距的增大而减小。因此,尽量增大锚桩与试桩间距可以有效地减小锚桩对试桩极限承载力的影响。

Effect of the anchor piles on the static load test result

The interaction between the anchor pile and the static load test pile is investigated using the elastic theory.The impact of different anchor pile schemes on the test result is studied.It is found that anchor piles can affect the ultimate bearing capacity of the test pile.The result obtained from the original test data analysis is larger than its actual ultimate bearing capacity.The error increases with the increase of the load on the pile and decreases with the increase of the distance between the anchor pile and the test pile.So the effect of the anchor piles on the ultimate bearing capacity of the test pile may be reduced effectively by increasing the distance between the anchor pile and the test pile.