摘要
在软土地基上修建桥梁时,由于桥台背后填土的作用,软土地基会发生朝台前的水平塑性流动,导致桥台侧移;同时,如果软基先期沉降未完成,在荷载作用下地基土产生沉降。该文分析了软基桥台病害产生机理、分布规律,并提出工程中的有效控制措施,以供同行在桥梁工程设计过程中借鉴和应用。
The horizontal plastic flow will happen forwards to the front of abutment in the soft subgrade because of the filling action at the back of abutment during the construction of bridge in the soft subgrade,which will lead the abutment move to the side.At the same time,the settlement of subgrade soil causes under the loading action if the pre-settlement of subgrade is not completed.The article analyzes causing mechanism and distribution rule of abutment fault in soft subgrade and puts forward the effective control measures in the projects,which can be referred and used in the design of bridge.
出处
《城市道桥与防洪》
2013年第5期92-94,14,共3页
Urban Roads Bridges & Flood Control
关键词
桥台侧移
沉降
负摩阻力
刚度
abutment side-moving,settlement,negative skin friction,rigidity
