摘要
随着我国基础设施建设步伐的加快,在越来越多的工程中要涉及到对回弹变形的分析。通过大量试验,研究了淤泥在卸荷作用下的变形特性。淤泥的回弹变形存在临界卸荷比,当淤泥卸荷比小于临界卸荷比时,淤泥不发生回弹变形;当卸荷比大于临界卸荷比时,淤泥发生回弹变形,回弹变形可以分为主回弹变形、次回弹变形、附加次固结变形三部分,附加次固结变形的实质仍然是土骨架的蠕变。
There are many settlement deformation analyses about soft soil ground in the past engineering practice. With the rapid development of infrastructure construction, the rebound deformation analyses are needed. Deformation properties under unloading have been studied through large numbers of tests. For the ooze's rebound deformation, a critical unload ratio exists. When ooze's unload ratio is lower than critical unload ratio, rebound deformation doesn't happen; when ooze's unload ratio is higher than critical unload ratio, rebound deformation happens. The ooze's deformation after unloading is divided into primary rebound, secondary rebound and appending secondary consolidation deformation. The essential of appending secondary consolidation deformation is creeping of soil framework.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第8期1259-1262,共4页
Rock and Soil Mechanics
关键词
淤泥
固结
回弹
卸荷
Consolidation
Deformation
Settlement of structures
Soil mechanics
Unloading
