大面积软基处理过程中的沉降预测研究  

Study on Settlement Prediction of Large Area Soft Foundation Treatment

作　　者：谢赛军 XIE Saijun(CRSC Construction Group Co.,Ltd.Changsha 410205,China)

机构地区：[1]通号建设集团有限公司,长沙410205

出　　处：《广东土木与建筑》2021年第6期43-46,共4页Guangdong Architecture Civil Engineering

摘　　要：大面积的软土地基含水量很高,压缩模量小,无法达到地基承载力要求。为了改善大面积软基的物理与力学性能,在真空预压的地基处理方法的基础上,联合堆载预压的方法去改善地基的物理与力学性能,同时结合经验双曲线法、Asaoka法、三点法模型去预测未来的地表沉降,并与实测值进行对比。结果表明:真空联合堆载预压的方法能显著提高大面积软基的承载力;双曲线法模型的沉降预测精度最高,三点法模型沉降预测精度高于Asaoka法。Large area of soft soil foundation has high water content and small compression modulus,which can not meet the requirements of foundation bearing capacity.In order to improve the physical and mechanical properties of large area soft foundation,based on the foundation treatment method of vacuum preloading,combined with surcharge preloading method to improve the physical and mechanical properties of foundation,combined with empirical hyperbola method,Asaoka method,three-point method model to predict the future surface settlement,and compared with the measured value.The results show that:the method of vacuum combined with surcharge preloading can significantly improve the bearing capacity of large area soft foundation;the hyperbolic model has the highest settlement prediction accuracy,and the three-point model has higher settlement prediction accuracy than Asaoka method.

关 键 词：软基 真空联合堆载预压 经验双曲线法 ASAOKA法 三点法 

分 类 号：TU447[建筑科学—岩土工程]