摘要
文中研究了滨海公路软基堆载预压沉降预测分析方法,以福建平潭某滨海公路为例,选取不同的时间起点和时间间隔的沉降数据,采用双曲线法和三点法计算最终沉降量及固结度,对计算结果进行比较分析。结果表明,双曲线法和三点法均能有效预测沉降量,选取适当的时间起点和时间间隔有利于提高计算结果的准确性,同时,人为操作对该过程影响较大。在实际应用中,双曲线法相对保守,有利于软土地基的充分固结和工程质量的提高;而三点法则有利于缩短工程施工周期,节约造价。因此,工程实践应根据具体需求选择适当的方法。
This paper studies the prediction and analysis method of preloading settlement of soft foundation under embankment load for coastal highways,taking a coastal highway in Pingtan,Fujian Province as an example.By selecting settlement data with different time start points and time intervals,the final settlement and consolidation degree are calculated using the hyperbolic method and the three-point method,and the calculation results are compared and analyzed.The results show that both the hyperbolic method and the three-point method can effectively predict settlement.Selecting appropriate time start points and equal time intervals can improve the accuracy of the calculation results.Moreover,human operation has a significant impact on this process.In practical applications,the hyperbolic method is relatively conservative,which is beneficial for the full consolidation of soft soil foundation and the improvement of engineering quality.On the other hand,the three-point method is conducive to shortening the construction period and saving costs.Therefore,in engineering practice,appropriate methods should be selected according to specific requirements.
作者
许云杰
Xu Yunjie(Fujian 197 Geological Team,Quanzhou,Fujian 362000)
关键词
软基堆载预压
双曲线法
三点法
最终沉降量
固结度
Preloading of soft foundation under load
Hyperbolic method
Three-point method
Final settlement
Consolidation degree
