摘要
预应力锚索能充分发挥岩体的自承潜力,调节和提高岩土的自身强度和自稳能力,已经广泛地应用于边坡工程、基坑工程、地下工程等工程中。对于大部分预应力锚索,内锚固段是锚索的主要受力及传力部件,其受力机制主要体现在内锚固段的极限抗拔力方面。基于Hoek-Brown准则提出计算模型,并结合实际工程,对预应力锚索内锚固段受力机制进行研究分析。结果表明,当内锚固段尺寸及岩体参数一定时,极限抗拔力与灌浆压力呈线性相关。
Prestressed anchorage cable can give full play to the self-supporting potential of the rock mass, to adjust and improve the geotechnical the strength and the ability of self-stabilization, has been widely used in engi-neering, excavation, underground construction projects. For most of prestressed anchor, anchor segment is the an-chor cable force and power transmission components. The force mechanism is mainly reflected the anchoring seg- ment, including the limits of anti-pulling force. Based on Hoek-Browm criterion computing model. With practical engineering, research and analysis on the prestressed anchorage cable anchoring section force mechanism are com-bined. The results show that when a certain anchoring segment size and rock mass parameters, the ultimate pullout force and grouting pressure are linearly correlated.
出处
《科学技术与工程》
北大核心
2012年第30期7951-7954,共4页
Science Technology and Engineering
关键词
预应力锚索
内锚固段
极限抗拔力
prestressed anchor cable ,interior bond section ,ultimate pullout force
