广东平海电厂强夯法处理花岗岩残积土地基试验成果与分析

强夯法加固地基普遍用于工程中,该方法除难以处理淤泥外,在其它土体的地基处理中均有或广泛采用,该方法也同样广泛用于加固广东地区的花岗岩残积土。根据广东地区的花岗岩残积土的土体性质,结合强夯加固同一工程两个试验区的新堆填花岗岩残积土的试验监测结果,确定与花岗岩残积土性质相适应的强夯施工技术参数,对各强夯施工参数评价方法做了进一步分析并提出新的见解; 通过结合监测和检测的土体物理力学性质指标对加固效果进行了完整的评价,总结出了不同夯击能或不同岩土性质对强夯加固花岗岩残积土效果的影响。

TEST RESULTS AND ANALYSIS FOR GRANITE RESIDUAL SOIL IMPROVED BY DYNAMIC COMPACTION METHOD AT PINGHAI POWER PLANT IN GUANGDONG

Dynamic compaction method is commonly used to strengthen the ground in engineering. This method is widely used to treat other kinds of soil except for silt,and also is appropriate to reinforce granite residual soil in Guangdong. According to the nature of granite residual soil in Guangdong and dynamic compaction test results of treating newly filling granite residual soil from two test area at some area,the technical parameters of dynamic compaction suiting to the nature of granite residual soil are determined,and some construction parameters are analyzed furthermore,and some new viewpoints for analyzing the dynamic compaction construction parameters are proposed too. Meanwhile by way of analyzing the monitoring results combining with test results with some physical mechanics property index,the reinforcement effect is fully appraised,and some conclusions are summed up that different compaction energy or different geotechnical properties at some area will make different effects on improving granite residual soils.