换填砂土堆载沉降预测方法研究

STUDY ON PREDICTION METHOD OF SURCHARGE SETTLEMENT OF REPLACEMENT SAND

为了展开对砂土堆载沉降预测方法的研究,结合沈阳市某现场平板载荷试验以及多种沉降计算方法,构建沉降量与时间的关系,对比不同方法的精度。分析表明双曲线法与指数法整体预测精度非常高;而对数法的整体预测效果非常差;三种沉降计算方法中指数法的精度最高,可以为类似砂土地基工程的堆载沉降预测提供有价值的参考。

Under a variety of settlement calculation of a field plate load test in Shenyang, the relationship between settlement and time is obtained, in which the accuracy of different methods is compared, to study the prediction method of sand surcharge settlement. The results shows that the overall prediction accuracy of hyperbolic method and exponential method is very high, however the overall prediction accuracy of logarithm method is very poor. Among the three settlement calculation methods, the exponential method has the highest accuracy, which could provide a valuable reference for the prediction of surcharge settlement of similar sand foundation engineering.