摘要
现行规范要求对抛石基床的顶面和底面进行水平抗滑稳定性验算,而不考虑抛石基床的内部滑移破坏情况,当基床较薄时,这样的规定可以保证抛石基床的安全性;当抛石基床比较厚时,基床后侧水平土压力作用不能忽略,基床内部可能会存在水平滑移面。通过模型实验和有限元软件PLAXIS的数值分析,证明了厚基床内部存在滑移面,建议在验算基床抗滑稳定性时要考虑基床前后土压力作用。
It is stipulated in current codes to check the resistance to sliding on the top and bottom of the rubble bed, with no consideration of sliding failure inside the rubble bed. When the bed is thinner, such provision can guarantee the safety of the rubble bed; but when the bed is thicker, the horizontal earth pressure at the back of the rubble bed shall not be neglected, since there possibly appears a horizontal slip plane. The experiment and numerical analysis by PLAXIS revealed that there is a slip plane suggested to consider the earth pressure in the front of and at the back of the bed when to stability.
出处
《水运工程》
北大核心
2009年第1期50-56,共7页
Port & Waterway Engineering
基金
交通部重力式码头修编资助项目。
关键词
重力式码头
抛石基床
滑移稳定性
gravity wharf
rubble bed
resistance to stability in the thick checking the result of model bed. Thus it is bed＇s resistance
