论文部分内容阅读
为了解决玻璃纤维格栅作为旧水泥混凝土路面沥青混凝土加铺夹层出现的问题,进行了有限元计算及理论分析,并进行了室内试验模拟现场情况。力学分析证明格栅夹层对沥青加铺层底的最大主应力、等效应力及最大剪应力均有明显的削减作用;直剪试验发现层间的破坏均发生在玻纤格栅与水泥混凝土试件的表面,加载速率越大越容易破坏,粗糙化处理后具有最佳的抗裂效果。结果表明,玻璃纤维格栅能防止旧水泥路面沥青加铺的反射裂缝、改善层间工作状态,而旧水泥路面表面进行粗糙化处理是实现此目标的重要保证。
In order to solve the problem of glass fiber grating as asphalt concrete pavement of the old cement concrete pavement, the finite element calculation and theoretical analysis were carried out. The indoor test was conducted to simulate the scene. Mechanical analysis shows that the interlayers of gratings significantly reduce the maximum principal stress, the equivalent stress and the maximum shear stress of asphalt overlay, and the direct shear tests show that the failure of the interlayers occurs on the glass fiber grating and cement concrete Pieces of the surface, the greater the loading rate, the more easily damaged, roughened with the best anti-cracking effect. The results show that the glass fiber grating can prevent reflective cracking of the asphalt overlay on the old concrete pavement and improve the working status of the interlayer. The roughening of the surface of the old cement pavement is an important guarantee for achieving this goal.