CAJ | 학술논문

为了揭示土钉墙在地面超载作用下的受力和变形规律，采用有限元方法，建立了整体三维有限元模型，模拟了某深基坑土钉支护的施工过程，分析了地面超载对开挖面水平位移、坑后地面沉降、坑底隆起以及土钉轴力的影响。结果表明：随着地面超载的增加，开挖面的水平位移、坑后地面沉降均近似呈线性增加，地面超载对坑底隆起的影响较小，地面超载对上部各排土钉轴力的影响要大于下部各排。
위료게시토정장재지면초재작용하적수력화변형규률，채용유한원방법，건립료정체삼유유한원모형，모의료모심기갱토정지호적시공과정，분석료지면초재대개알면수평위이、갱후지면침강、갱저륭기이급토정축력적영향。결과표명：수착지면초재적증가，개알면적수평위이、갱후지면침강균근사정선성증가，지면초재대갱저륭기적영향교소，지면초재대상부각배토정축력적영향요대우하부각배。
In order to reveal the rules of the stress and deformation of the soil nailed wall under the action of ground overload , the construction process of excavation and supporting of the soil nailed wall for deep foundation exca -vation was simulated through establishing a whole three-dimensional finite element model on the basis of the finite ele-ment method .The influence of the horizontal displacement of excavation face , the subsidence displacement of the ground beside the foundation pit , the bottom heave displacement and the axial forces of soil nails on different ground o -verload were analysized .The results showed that with the increase of the ground overload ,the horizontal displacement of excavation face , the subsidence displacement of the ground beside the foundation pit were increased approximately linearly, the ground overload had little effect on the bottom heave displacement , the effect of ground overload on the upper the axial forces of soil nails was larger than that of the lower .