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为研究正常使用状态下钢纤维水泥混凝土路面接缝的传荷性能影响因素及其衰减规律,对10块普通水泥混凝土路面板和10块钢纤维混凝土路面板进行了疲劳荷载试验。试件分别采用不同的传力杆直径、长度、混凝土板厚度及钢纤维掺量,分析了不同因素对钢纤维路面板接缝传荷能力的影响。结果表明:掺加钢纤维能够有效提高路面板的传荷能力,降低传荷能力衰减速率;钢纤维混凝土路面板的传荷能力随钢纤维掺量的增加而增大,受传力杆直径、长度影响较小;普通水泥混凝土路面板的传荷能力在最初加载的7万次过程中衰减明显,之后衰减缓慢;传力杆直径、长度及混凝土板厚度的增加,均能够提高接缝的传荷效率,但提高幅度十分有限。
In order to study the influencing factors and decay law of the load transfer performance of steel fiber cement concrete pavement joints under normal use, the fatigue load tests of 10 ordinary cement concrete pavement slabs and 10 steel fiber reinforced concrete pavement slabs were carried out. The influence of different factors on the joint transfer load capacity of steel fiber reinforced polymer pavement slab was analyzed by using different diameter, length, concrete slab thickness and steel fiber content. The results show that steel fiber can effectively improve the load carrying capacity of road pavement and reduce the decay rate of load carrying capacity. The load carrying capacity of steel fiber reinforced concrete pavement slab increases with the increase of steel fiber content, The influence of length is small; the load carrying capacity of ordinary cement concrete pavement slab attenuates obviously during the initial loading of 70,000 times, and then slows down slowly; the increase of diameter, length and concrete slab thickness of dowel bar can increase the transmission of joints Efficiency, but the increase is very limited.