基于圆锥体与棱柱体组合破坏面的土层锚杆承载力分析  

Analysis of Bearing Capacity of Ground Anchors Based on Triangular Prism and Half Taper Composed Destruction Model

作　　者：俞晓[1] 苏晓科[1] 

机构地区：[1]武汉科技大学,武汉430070

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)

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.

关 键 词：土层锚杆 承载力 极限平衡法 

分 类 号：TU43[建筑科学—岩土工程]