改进分层总和法在吹填土预压地基沉降计算中的应用

针对分层总和法应用于吹填土预压地基沉降计算存在计算结果不准确、人为因素影响大的问题，研究吹填土回弹率特性，在此基础上提出了用于吹填土沉降计算的改进分层总和法。将改进分层总和法用于某工程吹填土预压地基的沉降计算，并将分层总和法与实际监测的沉降进行对比。结果表明：在不对计算结果修正的情况下，改进分层总和法的计算结果与实际沉降监测结果更接近，误差约为3%，提高了吹填土预压地基沉降量计算的精度。改进分层总和法为场地后续的回填量预估及场地利用提供了指导，为类似项目提供借鉴。

Application of modified layer wise summation method in settlement calculation about reclamation soil preloading foundation

In order to solve the problems of inaccurate calculation results and great influence of human factors when applying layered summation method to settlement calculation of dredger fill preloaded foundation,the characteristics of resilience of dredger fill are studied,and an modified layered summation method for settlement calculation of dredger fill is put forward.The modified layered summation method is applied to the settlement calculation of the preloaded foundation of a dredger fill project,and compared with the layered summation method and the actual monitoring settlement.The results show that,without amending the calculation results,the calculated results of modified layered summation method are closer to the actual settlement monitoring results,with an error of about 3%.The accuracy of settlement calculation of preloaded foundation of dredger fill is improved.The modified layered summation method provides guidance for the subsequent backfill estimation and site utilization,and provides reference for similar projects.