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混凝土面板纵横自由边缘下的基础如果产生较大的塑性变形,则板边和板角将出现裂缝等损坏。当预计有这种可能时,应在板的自由边和角隅处采用钢筋或钢筋网补强。另外,混凝土路面与桥梁、涵洞、通道、沥青路面等相接部位与一般路段有所不同。这些部位的混凝土路面往往发生跳车现象,严重影响行车速度和舒适性以及路面的使用寿命。其原因是多方面的,主要的则是这些部位的差异沉降。防治的原则,除了对这些部位加强路基和基(垫)层的压实,注意桥(涵)台背后填料的选择和压实,尽可能减小这些部位的基础沉降量之外,还需根据这些部位的不同情况采取不同的处理措施,以加强和提高路面整体的耐久性。
Concrete panels under the free edge of the vertical and horizontal if there is a greater plastic deformation, the plate edge and angle will be cracks and other damage. Reinforcement or reinforcement should be used at the free edges and corners of the slab when such a possibility is anticipated. In addition, concrete pavement and bridges, culverts, access roads, asphalt pavement and other parts of the general section of the road is different. These parts of the concrete pavement tend to jump phenomenon, seriously affecting traffic speed and comfort and the life of the road. The reasons are many, but the main difference is the settlement of these parts. In addition to strengthening the compaction of the subgrade and foundation (cushion) layer in these areas, paying attention to the selection and compaction of packing behind the bridge (culvert) and minimizing the amount of foundation settlement in these areas, Different situations in these areas take different measures to enhance and enhance the overall durability of the road.