建筑机械偏心荷载对开挖稳定性影响离心试验
Influence of construction machinery eccentric load on stability of excavation by centrifugal model test

在建筑机械开挖市政管线的沟槽过程中，由于沟槽沟壁滑坡、塌方，挖掘机倾翻，造成经济损失和人员伤亡的工程事故日益增多。如何防御此类工程灾害是工程界普遍关注的前沿课题之一。通过模拟沟槽开挖过程的离心模型试验，讨论建筑机械在开挖沟槽过程中产生的偏心荷载的大小、与沟壁的距离以及偏心距等因素对沟槽沟壁的破坏形态、开挖深度及沟槽边坡滑动土体宽度等的影响。通过研究，可为沟槽等土方开挖安全施工及灾害防御提供重要支撑。
In the process of excavating municipal pipelines by construction machinery, trench wall slumping and excavating machine leaning make engineering accidents that lead to economic and casualties losses increase. How to avoid slumping accidents due to excavation is a project which desiderates researching. The influence of construction machinery eccentric load on trench stability by centrifuge model tests which simulate the process of trench excavation is discussed. This study will also provide important support to the safe construction and disaster prevention of trench excavation