水利水电科技进展2017，Vol.37Issue(4)：70-76,7.DOI:10.3880/j.issn.1006-7647.2017.04.013
基于荷载传递法的嵌岩锚杆抗拔承载特性
Anti-pullout bearing characteristics of rock-socketed anchor based on load transfer method
摘要
Abstract
In order to study the bearing characteristics of the interface between the anchor and rock in the anti-pullout process of a rock-socketed anchor, according to the failure mechanisms of the rock-socketed anchor in the rock foundation, the mechanical behavior of the interface between the anchor and surrounding rock was simulated using a two-segment linear function. The formulas of axial force, side resistance, and top vertical displacement of the rock-socketed anchor were derived based on the load transfer theory. The influence of the comprehensive influence coefficient η on the anti-pullout bearing characteristics of the rock-socketed anchor was analyzed, and the method for determining the value of η was provided. The axial force, side resistance, and P-S curve for an engineering example were analyzed using the presented calculation method. Results show that, when the uplift load is small, the side resistance of the rock-socketed anchor shows a hyperbolic distribution. When the uplift load is larger, the plastic zone appeares. The side resistance shows a uniform distribution in the plastic zone and a hyperbolic distribution in the elastic zone.关键词
嵌岩锚杆/承载特性/荷载传递理论/综合影响系数Key words
rock-socketed anchor/bearing characteristic/load transfer theory/comprehensive influence coefficient分类
建筑与水利引用本文复制引用
雷勇,尹君凡,陈秋南,贺成斌..基于荷载传递法的嵌岩锚杆抗拔承载特性[J].水利水电科技进展,2017,37(4):70-76,7.基金项目
国家自然科学基金(51208195, 41372303) （51208195, 41372303）
岩土工程稳定控制与健康监测湖南省重点实验室开放基金(E21618) （E21618）
