摘   要：为解决风机基础混凝土面层修补加固时出现开裂的问题，运用弹性力学方法计算了圆环形基础在中心受钢筒约束条件下面层修补加固混凝土中的应力状况，通过结构参数的代入，建立了弹性力学计算方程，并进行了弹性力学分析。结果表明：在基础环钢筒的约束下，面层修补加固混凝土的早期收缩和温度变形会产生较大的约束拉应力；当该拉应力大于混凝土的抗拉强度时，会导致混凝土开裂；提供了消减约束应力的相应措施和涉及到的相应技术参数，以便削弱该约束应力，使其在整个发展期均小于混凝土的抗拉强度，可为解决此类混凝土基础面层开裂问题提供借鉴。

Abstract: In order to solve the problem of cracking during the repair and reinforcement of the wind-powder tower concrete foundation surface layer, the elastic mechanics method was used to calculate the stress state of the repaired and strengthened concrete layer of the annular foundation under the constraint condition of the steel cylinder in the center. Mechanics equations were calculated, and elastic mechanics analysis was carried out. The results show that under the constraint of the foundation ring steel cylinder, the early shrinkage and temperature deformation of the repaired and strengthened concrete of the surface layer will generate a large constrained tensile stress, which is greater than the tensile strength of the concrete will cause the concrete to crack. Corresponding measures to reduce restraint stress and related technical parameters are provided in order to weaken the restraint stress and make it less than the tensile strength of concrete in the whole development period, which can provide reference for solving the cracking problem of concrete foundation surface.