摘要
限于场地原因,需对悬臂桩桩前基岩超深开挖,且仅留有一定宽度的阻滑岩体,导致了阻滑岩体能否保证悬臂桩安全有效的问题。以岳阳滑坡悬臂桩桩前嵌固段岩体为研究对象,建立了桩前基岩的计算模型,探讨了不同嵌固深度下的安全阻滑宽度,并结合数据拟合方法建立了两者之间的函数关系。结果表明:嵌固深度越大,安全阻滑宽度越小,两者之间呈幂函数关系,其关系式为hr=16.905 1B^(-0.754 0),并提出了岳阳滑坡最优的设计参数为嵌固深度6.24 m、阻滑宽度3.75 m。研究结果可为此类工程设计提供一定的理论指导和借鉴意义。
Due to spatial limitations, deep excavation of bedrock in front of cantilever pile is needed; besides, a limited width of anti-slide rock is available, which leads to the problem whether the anti-slide rock could guarantee the safety of the cantilever pile. The safe width of anti-slide rock to ensure stability under different embedded depths are discussed through building a computational model of bedrock in front of the pile, and the functional relationship between the width of anti-slide rock and the embedded depth is established with data fitting method. The embedded rock in front of the cantilever pile of a landslide in Yueyang is taken as a case study. Results show that the greater the embedded depth, the smaller the needed width of anti-slide rock to ensure the stability, and they are in a power function relationship hr = 16.905 IB ^- 07540, Furthermore, the optimal design parameters of Yueyang landslide is： embedded depth 6.24 m, and width of anti-slide 3.75 m. The results could provide a theoretical guidance and reference for such projects.
作者
赵庆远
ZHAO Qing-yuan(Liaoning Provincial Communication Planning ＆ Design Institute, Shenyang 110166, China)
出处
《长江科学院院报》
CSCD
北大核心
2016年第10期106-110,共5页
Journal of Changjiang River Scientific Research Institute
关键词
悬臂桩
桩前开挖
嵌固岩体
嵌固深度
桩前基岩阻滑宽度
cantilever pile
excavation in front of pile
embedded rock mass
embedded depth
width of anti-slide rock mass in front of cantilever pile
