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勘察方提供给设计方的单桩极限承载力与试桩取得的值普遍会有差异,有时差额还比较大。如果我们在工业厂房的每个柱下桩基均设柱下桩,并以此改变柱基的承台形式,同时在以后的沉桩施工过程中改变沉桩顺序,合理取用试桩的每级加荷值及试桩加荷的最大值,那么在不影响工期情况下,用工程桩做试桩就能起到用非工程桩做试桩的同样效果,得出试桩的确切极限承载力从而可以合理调整勘察数据。
The ultimate bearing capacity of the single pile provided by the surveyor to the designer is generally different from the value obtained from the test pile, and sometimes the difference is still relatively large. If we are in the industrial plant under the piles of each column are column piles, and in order to change the base of the plinth form, at the same time in the process of piling change the sequence of piling, reasonable access to each test piles Grade loading value and the maximum value of test pile loading, then without affecting the construction period, the use of engineering pile test pile can do with non-engineering pile test pile the same effect, draw the exact ultimate load test pile Therefore, the survey data can be reasonably adjusted.