CAJ | 학술논문

预应力锚索（杆）加固岩土是一典型的岩土与结构的空间相互作用问题。为可靠模拟这种结构与岩土的相互作用，提出了与工程中预应力施加和锁定工况相符的三维数值模拟分析等效力法。在ABAQUS有限元软件平台上，首先将该方法运用在单根预应力锚索的数值模拟试验，并与等效降温法和等效应变法进行对比分析，结果表明了该方法的优越性，此外，也分析了锚固段锚索轴力衰减速率与锚固体刚度有关，且与理论认识一致。然后，将等效力法应用在一实际预应力锚索加固边坡工程三维数值模拟中，分析了预应力锚索对加固边坡内部应力分布、边坡稳定性及锚索轴力分布的影响，表明该方法能可靠地应用于分析预应力锚索加固岩土的效果及锚索自身内力。
예응력묘색（간）가고암토시일전형적암토여결구적공간상호작용문제。위가고모의저충결구여암토적상호작용，제출료여공정중예응력시가화쇄정공황상부적삼유수치모의분석등효역법。재ABAQUS유한원연건평태상，수선장해방법운용재단근예응력묘색적수치모의시험，병여등효강온법화등효응변법진행대비분석，결과표명료해방법적우월성，차외，야분석료묘고단묘색축력쇠감속솔여묘고체강도유관，차여이론인식일치。연후，장등효역법응용재일실제예응력묘색가고변파공정삼유수치모의중，분석료예응력묘색대가고변파내부응력분포、변파은정성급묘색축력분포적영향，표명해방법능가고지응용우분석예응력묘색가고암토적효과급묘색자신내력。
The issue of rock and soil reinforced with prestressed anchor cables (rods) is a typical spatial interaction issue between structure and rock-soil .In order to reliably simulate this kind of interaction ,an equivalent force method which agreed with the working conditions of prestress loading and locking was presented in 3D numerical analysis .On the plat-form of the finite element software ABAQUS ,firstly ,the numerical modeling test of a single prestressed anchor cable was conducted .It demonstrates the superiority of the equivalent force method compared with the existing equivalent lowering temperature method and equivalent strain method .Meanwhile , the analysis shows that the declining rates of the axial forces of the anchor cables are related with the stiffness of anchorage body and the outcomes are consistent with the theo-retical ones .Then based on a practical slope reinforcement engineering ,the application of the equivalent force method was introduced in the 3D numerical modeling of a slope reinforced with prestressed anchors .It indicates that this method can be reliably applied to analyze the reinforcement effect of rock and soil with prestressed anchors and the internal forces of anchors’ themselves .