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强夯作为一种资源节约、经济有效和环保的地基处理方法,随着近年的发展已经扩展到饱和度较高的软粘土地基处理中,但截至目前饱和软粘土强夯加固技术尚不成熟,应用研究仍待探索。本文依托常州市录安洲港区一期工程散货堆场强夯加固地基处理项目,开展了强夯加固饱和软粘土动力响应试验研究,得出了冲击荷载作用下产生的动孔压波的特征、连续夯击作用下动孔压变化规律、动孔压的空间分布规律,并以动力响应测试结果证实了半喂料的填料方式有利于提高强夯置换加固效果结论。本文为饱和软粘土强夯作用机理的积累了有益的试验成果。
Dynamic compaction as a resource-saving, cost-effective and environmentally friendly foundation treatment method, with the recent development has been extended to saturated soft clay foundation treatment, but so far soft clay saturated rammer reinforcement technology is not yet mature, Applied research remains to be explored. In this paper, based on the project of dynamic compaction and consolidation of bulk cargo yard in the first phase project of Cangzhou Harbor, Changzhou City, the dynamic response of saturated soft clay by dynamic compaction was studied and the dynamic pressure response of dynamic pore was analyzed. The characteristics of dynamic pressure and pore pressure under the action of continuous tamper and the dynamic distribution of pore pressure were verified. The results of dynamic response test confirmed that the packing method of semi-fed material is helpful to improve the replacement effect of dynamic tamping. This paper has accumulated beneficial experimental results for the mechanism of dynamic compaction of saturated soft clay.