An Analytical Transformation Algorithm for Loading-Settlement Curves of Rock-Socketed Piles in Soft Rock by Self-Balanced Tests
To more accurately reflect the test results of the bearing capacity of piles by self-balanced tests in soft rock foundation,an analytical transformation algorithm for the tested bearing capacity of rock-socketed piles by self-balanced tests was proposed.Firstly,the shear mechanism of interfaces between piles and soft rock was analyzed,and a transfer function of loads and model for the interfaces between piles and soft rock were established considering the three shear stages of cementation,shear dilation and slip.Secondly,the analytical solution for loading-settlement curves of piles by the self-balanced tests was deduced considering the influence of the pile weight of the upper section on the loading box and combining the load transfer function of the interface between piles and rock.Comparing the measured data of two test piles with the calculating results by the analytical solution,the accuracy calculating results by the analytical solutions was 87.3%and 85.6%respectively.Eventually,based on the existing simplified transformation method,an analytical transformation method was proposed.Comparing the results with the precise transformation solutions,the accuracy of the calculating results by the analytical transformation solution was respectively improved by 15.3%and 17.4%compared with the calculating results by the simplified transformation method.The analytical transformation method was simple,practical,and more accurate,which could provide reference to self-balancing tests in engineering with rock-socketed piles in soft rock.
rock-socketed pile in soft rookself-balanced testinterface between piles and soft rockload transfer method
NETL
NSTL
万方数据
维普
