基于FLAC3D的埋入式抗滑桩桩间距优化方法研究  

Study on FLAC3D-based Optimization Method for Spacing of Embedded Anti-slide Pile

作　　者：刘欢[1] 吴维义[2] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550003 [2]贵州省交通规划勘察设计研究院股份有限公司,贵阳550081

出　　处：《路基工程》2016年第6期148-151,共4页Subgrade Engineering

摘　　要：目前抗滑桩已广泛应用于滑坡灾害治理工程中，其中埋入式抗滑桩具有节省圬工，不影响生态环境的优势。针对贵州某堆积体滑坡治理工程，在前人研究成果基础上，以FLAC3D软件为平台，采用虚拟模型，分析同种工况下FLAC3D与常规理论计算滑坡稳定性的差异，并在合理的滑坡位置布设埋入式抗滑桩，分别采用solid单元与pile单元模拟不同桩间距条件下抗滑桩的抗滑效果。经分析，桩间距为2．5～3．5倍桩宽时抗滑效果最佳。Currently, anti-slide pile is widely used in treatment of landslide hazard, wherein the embedded anti-slide pile may have masonry volume decreased and is environment friendly. In relation to the treatment of talus landslide in Guizhou, the paper, on the basis of previous achievements, adopted virtual model on the FLAC3D software platform to study in the same case the difference between the results of slope stability calculated by FLAC3D and conventional theory; and simulated the slide resistance effect of embedded anti- slide pile which were arranged at the proper position on the slope under the condition of different pile spacing by means of solid and pile unit. It is analyzed that the effect of slide resistance is optimal when the pile spacing is 2. 5- 3.5 times the pile width.

关 键 词：滑坡 FLAC3D 强度折减法 埋入式抗滑桩 桩间距 

分 类 号：TU473.14[建筑科学—结构工程]