基于强度折减法的格构锚杆边坡治理方案研究

Study on the Slope Treatment Scheme of Anchor Lattice Beam Based on the Strength Reduction Method

定量分析边坡治理方案是保障高边坡治理后稳定性的重要措施。格构锚杆作为一种有效实用的边坡加固措施已广泛应用于高边坡的滑坡治理。结合实际工程,基于强度折减法理论,应用有限元软件ABAQUS定量分析了锚杆长度等关键参数对边坡稳定性、安全系数、位移场的影响规律。研究结果表明,边坡稳定安全系数随锚杆长度增加呈对数方式增长;当锚固段长度从8m增至10m时,边坡滑动位移最大值显著增加,边坡抗变形能力明显提高。研究成果为格构锚杆治理方案的参数优化提供理论依据。

Quantitative analysis of the slope treatment scheme is an important measure to ensure the stability of the high slope. As one of the most effective and practical measure of the slope treatment scheme,anchor lattice beam has been widely applied in the landslide treatment of high slope. Combining with high slope engineering,finite element software ABAQUS and strength reduction method are adopt to investigate the effect of the key parameters of anchor on the slope stability,safety factor and displacement field. The research result shows that the slope stability safety coefficient appears a logarithm increase with the growth of anchor bar’s length. Moreover,while the anchoring length increases from 8m to 10 m,the maximum sliding displacement of slope increase significantly,and deformation resistance of the high slope was improved significantly. Research results concluded in this paper can provide theoretical base for the parameter optimization of anchor lattice beam of slope treatment scheme.