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文章分析了在冰冻条件下,水泥混凝土路面裂缝的形成机理。提出了将水泥混凝土路面冰冻裂缝分为自身冰冻裂缝和由冰冻裂缝所引起的反射裂缝。并运用温缩应力法和经验公式法分别计算自身冻裂应力,实验结果表明运用温缩应力法预测裂缝长度较为准确。应用弹性半空间体上作用一水平圆形高次抛物面荷载,通过亨格尔积分计算由于交通荷载造成的水平力引起的反射裂缝,并提出裂缝处理措施。
The paper analyzes the formation mechanism of cracks in cement concrete pavement under freezing conditions. It is proposed to divide the frozen cracks in cement concrete pavement into their own frozen cracks and the reflection cracks caused by frozen cracks. The self-cracking stress is calculated by the method of temperature-shrinkage stress and empirical formula respectively. The experimental results show that the prediction of the crack length by temperature-shrinkage stress method is more accurate. Applying a horizontal circular high-order parabolic load on the elastic half-space body, the reflection cracks caused by the horizontal force caused by the traffic load are calculated by Henger’s integral method, and the crack treatment measures are proposed.