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首页> 外文会议>RILEM Proceedings PRO 39; RILEM Symposium on Fibre-Reinforced Concretes(FRC) - BEFIB 2004 vol.1; 20040920-22; Varenna(IT) >STATIC AND FATIGUE TESTS ON SFRC ARCH RIBS
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STATIC AND FATIGUE TESTS ON SFRC ARCH RIBS

机译：SFRC拱肋的静态和疲劳测试

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摘要

The paper reports on the application of steel fibre reinforced concrete (SFRC) in arch ribs subjected to static and fatigue loading. A theoretical study was carried out prior to the experimental programme in order to identify the worst loading conditions for use in the experimental study and to identify the locations for instrumentation at the two additional hinges formed in the arch at failure. Two types of arch ribs were used in the study: solid rectangular sections (300mm wide x 145mm deep) and U-shaped channel sections (with overall dimensions of 300mm wide x 250mm deep). Four solid sections and five channel sections were used in the study. Initial test results were obtained under static loading and thereafter each section type was subjected to fatigue loading. The fatigue tests were interrupted at regular intervals in order to carry out static tests corresponding to the minimum, mean and maximum loads in the fatigue test. Deflections and crack opening deformation were monitored in this way throughout the fatigue test. The SFRC arch ribs were shown to provide good static and fatigue performance and further work is in progress to expand this work and their areas of application.
机译：该论文报道了钢纤维增强混凝土（SFRC）在承受静载荷和疲劳载荷的拱肋中的应用。为了确定在实验研究中使用的最坏负载条件，并确定在破坏时在拱中形成的两个附加铰链处的仪器安装位置，进行了实验研究之前的理论研究。研究中使用了两种类型的拱肋：实心矩形截面（宽300mm x 145mm深）和U形槽截面（整体尺寸为300mm宽x 250mm深）。在研究中使用了四个实心部分和五个通道部分。初始测试结果是在静态载荷下获得的，此后，每种截面类型都经受了疲劳载荷。为了进行对应于疲劳试验中最小，平均和最大载荷的静态试验，应定期中断疲劳试验。在整个疲劳测试过程中，都以这种方式监测挠度和裂纹开口变形。 SFRC拱肋被证明具有良好的抗静电和抗疲劳性能，并且正在进行进一步的工作以扩大这项工作及其应用领域。

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