抛石基床承载力及夯击密实特性

抛石基床因其承载力高、地基变形小,在港口、码头等工程领域得到越来越广泛应用。通过室内试验结合离散元数值模拟方法对抛石基床承载力进行分析,在此基础上针对不同质量重锤夯击特性进行研究,结果表明:随着抛石基床深度的增加,所监测到的抛石基床夯击应力逐渐减小; 16. 2 t重锤在抛石基床底部夯击应力大于6. 5 t重锤夯击时在抛石基床0. 5 m深度处的夯击应力,通过增大重锤的质量增加抛石基床分层厚度的思路可行。所得研究结果可为工程实际施工提供借鉴。

Study on mechanical characteristics and dynamic compaction of rubble bed

Because of its high bearing capacity and small foundation deformation, rubble bed is more and more widely used in port and wharf engineering. In this paper, the bearing capacity of rubble bed is analyzed by indoor test combined with discrete element numerical simulation method. On this basis, the characteristics of different quality of heavy hammer ramming are studied. The results show that with the increase of the depth of rubble bed, the rubble monitored. The compaction stress decreases gradually, and it is feasible to increase the layered thickness of the rubble bed by increasing the weight of the 16.2t weight hammer when the compaction stress at the bottom of the rubble bed is greater than 6.5T weight hammer when the compaction stress is 0.5m depth of the rubble bed. The research results can provide reference for the actual construction of the project.