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软基上的老路拓宽工程中,当软土层较薄时,通常会采用加筋与换填相结合的处理措施,以减少地基的变形对路面的影响。利用大型通用有限元软件ANSYS对未加筋、加筋、加筋并换填2m,三种情况下分别进行了数值分析,并详细研究了软基厚度、路基高度、加筋层数等对新旧路基变形的影响。分析结果表明:在软土地基上的老路加宽工程中,相对于只采用加筋的处理方法,采用加筋与换填相结合的处理措施,对于减少新旧路基下的不均匀沉降和侧向位移是一种更为有效的方法。
In the old road widening project on the soft foundation, when the soft soil layer is thinner, the combination of reinforcement and replacement is usually adopted to reduce the influence of the foundation deformation on the road surface. In this paper, the numerical analysis is carried out under the three conditions of non-stiffened, stiffened and stiffened and filled with large-scale common finite element software ANSYS. The effects of the thickness of soft ground, the height of subgrade and the number of stiffened layers, Influence of subgrade deformation. The analysis results show that in the widening of the old road on soft soil foundation, compared with the only reinforcement method, the combination of reinforcement and replacement is adopted to reduce the uneven subsidence and lateral Displacement is a more effective method.