一种基于CPT实测值预测地基处理工后沉降的理论计算方法

A Theoretical Method of Settlement Prediction after Soil Improvement Obtained from the CPTs

提供一种采用场地地基处理后的CPT实测值来预测堆场的工后沉降进而验证场地地基处理效果的方法。该计算方法可通过CPT实测值将土层划分出黏性土层和砂性土层,并针对不同的土层采用不同的沉降计算公式。在此基础之上,提供了一种针对大面积堆载和独立基础荷载沉降预测的计算方法,并对某港口集装箱区进行了沉降预测。该方法仅通过静力触探试验和固结试验即可获得计算参数,实用性较强,已成功运用于国外某大型集装箱码头堆场地基处理设计中。

A design methodology for verification the soil improvement performance has been proposed. The process of settlement prediction involves classifying the soil into fine and coarse layers based on the test results obtained from the CPTs. This classification forms the basis for the subsequent design calculations. For settlements under uniform loads and footing loads the expected settlements is calculated separately. The proposed method is used to predict the settlement of container area in a port. The results show that the method can be conducted easily based on CPT data and consolidation tests is successfully applied to the soil improvement design in a large foreign container terminal.