动力固结法在码头堆场软基加固工程中的应用

动力固结法应用于软基加固工程的关键是要确定科学合理的设计与施工参数。开展动力固结法在高地下水位工况下的现场试验研究,进行大量的现场观测与试验检测,根据试验结果深入分析两种动力组合下的软基加固效果。研究表明,动力固结法适用于依托工程,且在该工程地质条件下,4 000 kJ夯击能的有效加固深度可达10 m左右,多一遍点夯更有利于提高地基浅层的土体强度,经处理后码头堆场可满足工后沉降小于300 mm、承载力达到200 k Pa的设计要求。

Application of dynamic consolidation method in soft foundation reinforcement of wharf yard

The key of dynamic consolidation method applied to soft foundation reinforcement engineering is to determine the scientific and reasonable design and construction parameters.This paper carries out the field test research of dynamic consolidation method under the condition of high groundwater level,conducts a large number of field observation and test detection,and analyzes the soft foundation reinforcement effect under two dynamic combinations according to the test results.The results show that the dynamic consolidation method is suitable for the supporting engineering,and under the engineering geological conditions,the effective reinforcement depth of 4 000 kJ ramming energy can reach about 10 m.One more time of point ramming is more conducive to improving the soil strength of the shallow layer of the foundation.After treatment,the wharf yard can meet the design requirements of settlement less than 300 mm and bearing capacity up to 200 kPa.