堆载预压法加固吹填淤泥地基效果评价

介绍了堆载预压法在港口吹填淤泥地基加固中的运用,采用现场实测结果评价其加固效果;与此同时,采用单向分层总和法计算堆载后地基最终累积沉降和土体分层沉降,且用实测结果检验理论计算结果,探讨这种理论计算方法在吹填淤泥地基中的适用性。结果表明:堆载预压法加固吹填淤泥地基效果显著。经堆载预压处理后,土体物理力学性质和十字板剪切强度得到了很明显的改善和提高,地基承载力特征值能够满足设计要求;现场实测沉降结果与理论计算沉降结果几乎一致,验证了理论方法计算沉降的可靠性和准确性。

Effect Evaluation on Reclaimed Silt Foundation Reinforced by Surcharge Preloading Method

The Application of surcharge preloading method in the reinforcement of reclaimed silt foundation is introduced in detail,and its reinforcing effect is evaluated on the basis of the field measuring data. Meanwhile,one-way layer summation is used to calculate the ultimately accumulative settlement and soil layedwise settlement of the surcharged foundation,which will also be verified with the field measuring data to confirm the applicability of this theoretical method to the reclaimed silt foundation. The results show that the reclaimed silt foundation can be reinforced greatly by using the surcharge preloading method. The physical and mechanical properties of soil and the vane shear strength have been improved siginificantly after the foundation is surcharged and preloaded,the characteristic value of foundation bearing capacity satisfies the design requirements,the field measured settlement are almost consistent with the theoretical calculation results,which proves the reliability and accuracy of the settlement calculation method.