钢纤维混凝土路面接缝传荷能力试验研究

发布时间：2018-04-26 22:37

本文选题：钢纤维混凝土路面 + 水泥混凝土路面　；参考：《公路》2017年03期

【摘要】：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。
[Abstract]:In order to study the factors affecting the load transfer and attenuation of joints of steel fiber cement concrete pavement under normal use, the fatigue load tests were carried out on 10 ordinary cement concrete pavement slabs and 10 steel fiber reinforced concrete pavement slabs. The influence of different factors on the load transfer capacity of steel fiber pavement joint was analyzed by using different diameter, length, thickness of concrete slab and steel fiber content. The results show that the load transfer capacity of steel fiber reinforced concrete pavement can be improved effectively and the attenuation rate of load transfer capacity can be reduced, and the load transfer capacity of steel fiber reinforced concrete pavement slab increases with the increase of steel fiber content, but is less affected by the diameter and length of the load transfer rod. The load transfer capacity of ordinary cement concrete pavement slabs attenuates obviously during the initial loading of 70,000 times, then slowly, and the load transfer efficiency of joints can be improved with the increase of the diameter, length and thickness of the load transfer bar. But the increase is very limited.
【作者单位】：河北工业大学土木与交通学院;河北省土木工程技术研究中心;南通大学交通学院;
【基金】：国家自然科学基金,项目编号61503201
【分类号】：U416.216

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