沿海某港口工程高能量强夯地基处理引起的地层侧移分析

Analysis of the stratum lateral movement of foundation with dynamic compaction in a harbor engineering

工程施工引起地下侧移所导致的工程事故已屡见不鲜,且往往造成重大损失。但对这种位移,特别是对强夯引起的地层侧移,则很少有专门的监测和分析。通过对某港口工程高能量强夯试验中监测到的40次侧斜资料的整理,从波能与应力两方面分析了地层侧移的机理,讨论了影响侧移的主要因素,指出了本工程的最大侧移值(124mm)及所处的深度(5～6m)。这对于积累侧移资料、指导安全设计与施工以降低工程事故率具有重要意义。

Engineering accidents resulted from stratum lateral displacement after constructing are of common occurrence and may cause great losses. Howerver, few of special monitoring or research work on this topic has been carried out, especially in case of dynamic compaction. Based on 40 sets of monitoring data of the horizontal displacement in the high energy's dynamic compaction project of one harbor engineering, the mechanism of stratum lateral displacement is analyzed from the point of wave energy and stress and the main factors of the movement is also discussed in this paper. Final results show that maximum(124 mm)of the displacement in this project and its depth (5～6 m). It is of great significance to accumulate lateral displacement data and conduct safe designing and constructing in order to reduce rate of engineering accidents.