贵州北盘江大桥高边坡特征及其工程效应研究  

Studies on high slope characteristics and engineering effect of Beipanjiang Bridge in Guizhou

作　　者：赵超[1] 樊敬亮[1] 孟娟[1] 

机构地区：[1]江苏省有色金属华东地质勘查局,江苏南京210007

出　　处：《地质学刊》2009年第3期245-250,共6页Journal of Geology

摘　　要：高山峡谷地区的北盘江大桥两岸高边坡,表部风化卸荷严重。因此,对其稳定性及危害程度进行准确评价显得尤为重要。首先,对两岸边坡的结构类型、结构面与坡面的组合、岩体风化及物理力学性质等特征进行了研究;然后,对两岸边坡的岩体进行了质量分级;在岩体质量分级的基础上,利用FLAC3D数值模拟软件,对两岸边坡在自重、大桥荷载和地震作用下引起的工程效应进行了综合评价。The high slopes along the two banks of Beipanjiang Bridge in mountainous canyon were severely weathered, so it was rather important to evaluate the characteristics of stability and hazard degree accurately. Firstly, the authors studied the characteristics of the high slope on both banks, such as structure type, combination between structure plane and slope surface, rock mass weathering and the physical and mechanical properties. Then, the classification was given to rock mass, and based on rock mass quality classification, stability and potential engineering effect from gravity, bridge load and earthquake were synthetically evaluated by way of FLAC3 D （Fast Lagrangian Analysis of Continua in 3 Dimensions） numerical simulation software. Finally, it is concluded that the site was adapted to building bridge.

关 键 词：北盘江大桥 高边坡 岩体质量 FLAC3D 工程效应 贵州北盘江 

分 类 号：TU473.1[建筑科学—结构工程]