谷拉河特大桥岸坡稳定性评价及治理  

Stability evaluation and management to slope of Gu-la river bridge

作　　者：杨琳[1] 

机构地区：[1]西安铁路职业技术学院土木工程系,陕西西安710600

出　　处：《四川建材》2012年第1期73-74,77,共3页Sichuan Building Materials

摘　　要：针对谷拉河特大桥库淹区斜坡桥基础稳定性问题,采用离散元法建立了岸坡数值仿真模型,分析了正常施工期和蓄水期两种工况下岸坡的水平、竖直及沿岸坡度方向的位移,研究了不同工况下岸坡变形规律。结果表明:在施工期,岸坡基本能保持稳定,仅局部块体滑动位移较大,而在蓄水期大部分块体的滑动位移明显增大,说明水对岸坡的稳定性有着直接的影响,需要结合工程实际采用灌浆、加固及设置排水设施等综合治理方法对其进行处治。Aiming the stability of slope in Gu-la river bridge,the paper analyzed the slope displacement by DEM.The slope can remain stability except partial blocks in construction period,but the displacement of most blocks becomes larger in storage period.The results indicate that the water serious influence the stability of the slope.The methods such as grout、reinforcement and drainage facilities are suggested on the basis of local situation.And it is proved that the bridge has a good performance after management by tracking and monitoring relying engineering.

关 键 词：桥梁工程 斜坡桥基 库淹区 离散元法 治理方法 使用效果 

分 类 号：U44[建筑科学—桥梁与隧道工程]