摘要
根据实际工程中土层锚杆的拉拔破坏以锚杆体周围的土体屈服或破坏为主的特点,以极限平衡理论为依据,考虑锚固土体在最不利条件下的稳定性,提出在土层和风化岩层中的单根锚杆破坏形式为锚杆周围土体产生圆锥形的剪切破坏面,并进一步假设单排锚杆的破坏形式为三棱柱和半圆锥组合破坏体模型,分别推导了其极限承载力计算公式。
According to the fact that yield or failure of soil around anchor rods is the main failure form of the rods, based on elastic and plastic limit equilibrium theory, considering soil stability under the most unfavorable conditions, it is proposed that the single anchor destruction form in the air slake terrain and soil layer is the tapered sharing failure that engendered by the soil around anchor. Supposing destruction form for single line of anchors is triangular prism and half taper composed destruction model, formula to calculate the bearing capacity of ground anchors is developed.
出处
《结构工程师》
2006年第3期57-59,共3页
Structural Engineers
基金
湖北省自然科学基金(编号:2004ABA073)
关键词
土层锚杆
承载力
极限平衡法
ground anchor, bearing capacity, limit equilibrium method
