结合广州南沙港淤泥地基处理工程，利用超孔隙水压力、分层沉降和抗剪强度等指标，对动静力排水固结法加固淤泥地基的加固深度和加固效果进行现场试验研究。结果表明，增加总夯击能可明显地增大有效加固深度；夯击能一定时，夯击四遍或五遍，每遍点夯的夯击能控制在900kN·m以下时，加固效果和加固深度均优于夯击三遍，重锤低落距夯击方式的加固深度和加固效果优于轻锤高落距。%Combining with the project of muck foundation disposal at Nansha Port, Guangzhou and using the indexes, such as excess pore water pressure, layered settlement and shearing strength, the depth and the effect of the reinforcement on muck foundation by means of dynamic-static drainage consolidation are studied through on-site experiment. The result shows that the increment of total tamping energy can increase the effective reinforced depth obviously. When tamping energy is given, tamping four or five times with the tamping energy in single point every time to be controlled less than 900 kN. m has superior reinforced effect and depth than tamping three times ; the reinforced depth and effect by means of heavy hammer and low drop distance tamping are superior to those by light hammer and high drop distance.
展开▼
