天津港智能化码头强夯处理地基承载力研究  

Study on the Bearing Capacity of the Foundation by Dynamic Compaction for the Intelligent Container Terminal in the Tianjin Port

作　　者：侯建飞 左大伟 刘翰琪 杨之良 智胜英 Hou Jianfei;Zuo Dawei;Liu Hanqi;Yang Zhiliang;Zhi Shengying(Tianjin Jingang Construction Co.,Ltd.,Tianjin 300456,China)

机构地区：[1]天津津港建设有限公司,天津300456

出　　处：《港工技术》2022年第S01期107-111,共5页Port Engineering Technology

摘　　要：强夯法一般对于粗颗粒土效果非常明显,但目前对于饱和软土的强夯法研究还比较少。本文结合前人研究成果,采用理论分析、室内试验和现场试验的方法,研究了强夯法对软粘土地基承载力的影响。本文提出了针对强夯法加固后形成的硬壳层地基承载力计算公式,并根据天津港地区北港池欧亚北侧地块场地的工程实例,验证了该方法的可行性和有效性。研究结果表明:适当控制强夯能量,强夯法可使土颗粒重新排列,抗剪能力提高,从而使地基得到加固。该研究为采用低能量多遍强夯加固饱和软粘土地基的方法提供了一定理论依据。Generally,the dynamic compaction method has obvious effect on the coarse-grained soils,while the relative research on it used for the saturated soft soils is currently deficient.Based on the previous research results,in this paper,the effect on the bearing capacity of the saturated soft soils by the dynamic compaction is studied with theoretical analyses,the laboratory and field tests.The computational formula for bearing capacity of the upper hard crusts after dynamic compaction is derived,which is verified feasible and valid by the fact at the north land area of OuYa,North Harbour Basin in the Port of Tianjin.The study results show that the dynamic compaction can make the soil particles rearranged and the shear-bearing capacity improved,provided that the compacting energy should be controlled appropriately,so that the foundation is consolidated.This research provides a certain theoretical basis for application of the dealing with the saturated soft soil foundation by optimal dynamic energy compaction repeatedly.

关 键 词：强夯法 地基处理 软粘土地基 孔隙水压力 地基承载力 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]