岩土工程学报Issue(z2)：7-11,5.DOI:10.11779/CJGE2014S2002
锚杆长度与边坡坡率对最优锚固角的影响
Effect of bolt length and slope rate on optimum anchorage angle
摘要
Abstract
The optimum anchorage angle is the important parameter in the design of anchoring engineering. In order to study the effect of bolt length and slope rate on the optimum anchorage angle, a numerical model for slopes is established using FLAC3D. It is found that the anchor length and the slope rate have great influence on the optimum anchorage angle. The results show that: (1) With the increase of anchor length, the factor of safety decreases at first and then remains stable, so there exists an effective length. The effective length decreases with the increase of anchorage angle. (2) The increase of anchorage angle will lead to the safety factor first to increase and then decrease, so there exists an optimum anchorage angle. The optimum anchorage angle will decrease linearly with the increase of bolt length. (3) When the anchorage angle is less than the optimum anchorage angle, the slope rate only has small impact on the safety factor. When the anchorage angle is the same as the optimum anchorage angle or larger than the optimum anchorage angle, the impact of the slope rate on the slope stability becomes more obviously, and the larger slope rate leads to the larger optimum anchorage angle.关键词
数值分析/安全系数/锚固角/锚杆长度/边坡坡率Key words
numerical analysis/safety factor/anchorage angle/bolt length/slope rate分类
建筑与水利引用本文复制引用
林杭,钟文文,熊威,唐雯钰,曹平..锚杆长度与边坡坡率对最优锚固角的影响[J].岩土工程学报,2014,(z2):7-11,5.基金项目
国家自然科学基金项目（51304240）；黄土地区公路建设与养护技术交通行业重点实验室开放基金项目（KLTLR-Y13-14）；西部灾害与环境力学教育部重点实验室开放基金项目 （）
