一种高速公路软基沉降预测的反演计算方法

A Back-analysis Method to Calculate the Settlement of Soft Foundation in Expressway

进一步研究高速公路软基沉降问题 ,提出运用土工反分析理论进行地基沉降预测的方法。该方法利用早期的沉降实测数据和准确的加载信息可以预测更长时间内的累计沉降量、沉降速度、工后沉降和最终沉降量 ,同时也可以推算出一些土体变形的平均参数。并通过一个工程实例 ,用反分析方法进行沉降预测 ,将反演计算结果与实测结果进行比较分析 ,证明本文所采用的预测方法是先进合理的 ,可以在工程中推广应用。

In this paper, a deep research on soft foundation settlement in expressway is conducted. A method to predict foundation settlement using back-analysis theory is put forward, and it can predict accumulated settlement in longer time period, speed of settlement, after work settlement and the final settlement based on recorded data of settlement and accurate loading information. It also can calculate some average parameters of foundation deformation. Finally, the result of an engineering project testified the method we used is reasonable and advanced, and it can be applied to actual engineering.