岩土工程学报Issue(5)：958-964,7.DOI:10.11779/CJGE201505024
爆破挤淤堤坝工后沉降特性离心模拟试验研究
Centrifugal model tests on settlement characteristics of embankment using blasting compaction technology
摘要
Abstract
Theblasting compaction technology plays an important role in the construction of marine reclamation projects, however, its mechanism studies are behind the engineering practice. An ignition device is developed in the centrifuge to initiate and control blasting effect, and two centrifugal model tests on the blasting compaction technology of silt with different water contents are carried out. Furthermore, the settlement of embankment with blasting compaction and the characteristics of the excess pore water pressure of silt foundation are analyzed. The results show that the immediate settlement of embankment is larger after blasting when the silt has higher water content, and the blasting displacement effect is more pronounced. However, the post-construction settlement of embankment is larger when the silt foundation has lower intensity. In addition, the excess pore water pressure is produced after blasting in the silt foundation with overburden pressure, and it will weaken the effective shear strength of silt foundation or even the structural strength and load-bearing capacity will lose, so that favorable conditions will be created for replacement of "mud - stone" in the process of blasting compaction.关键词
爆破挤淤/离心模拟试验/沉降分析/超孔隙水压力Key words
blasting compaction/centrifuge model test/settlement analysis/excess pore water pressure分类
建筑与水利引用本文复制引用
徐学勇,胡波,李波,李炜,龚壁卫,狄圣杰..爆破挤淤堤坝工后沉降特性离心模拟试验研究[J].岩土工程学报,2015,(5):958-964,7.基金项目
国家自然科学基金项目（41101519，51008035）；浙江省自然科学基金项目 （）
