• 主题
高级搜索  >
历史搜索 清空历史
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) >EXPERIMENTAL TESTING OF INNOVATIVE BRIDGE DECKS WITH REDUCED REINFORCEMENT AND STRAIN-HARDENING FIBER REINFORCED CEMENTITIOUS COMPOSITES
【24h】

EXPERIMENTAL TESTING OF INNOVATIVE BRIDGE DECKS WITH REDUCED REINFORCEMENT AND STRAIN-HARDENING FIBER REINFORCED CEMENTITIOUS COMPOSITES

机译：减少桥筋和应变硬化纤维增强水泥基复合材料的新型桥梁甲板的试验测试

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper describes the second phase of experimental testing of a new bridge deck system in which the top reinforcement is totally eliminated and instead, a strain-hardening fiber reinforced cement composite (or HPFRCC) is used. To simulate the bridge deck system, two-span continuous beams simulating deck slab slices were tested to failure. In phase 1, the use of Spectra fiber reinforced composites in the proposed deck system was explored. Experimental results can be found elsewhere. For phase 2, described in this paper, the use of other types of HPFRC composites was investigated. Three different types of HPFRC composites, namely Spectra fiber, PVA fiber, and Torex fiber reinforced mortars, were studied here. Experimental results are described with the focus on serviceability, inelastic behavior, energy absorption as well as comparison with conventional AASHTO concrete deck. Based on the findings, the proposed deck system works as anticipated. With strain-hardening matrices, a plastic hinge mechanism formed under increasing load, leading to a response better than that of conventional reinforced concrete decks, even though the top reinforcement was eliminated. The proposed deck system showed higher inelastic stiffness, higher ductility and better serviceability compared to conventional reinforced concrete deck.
机译：本文介绍了新桥面板系统的第二阶段实验测试，该系统完全消除了顶部钢筋，而是使用了一种应变硬化纤维增强水泥复合材料（或HPFRCC）。为了模拟桥面板系统，模拟桥面板的两跨连续梁进行了破坏测试。在阶段1中，探索了在建议的甲板系统中使用Spectra纤维增强复合材料的方法。实验结果可以在其他地方找到。对于本文所述的阶段2，研究了其他类型的HPFRC复合材料的使用。在这里研究了三种不同类型的HPFRC复合材料，即Spectra纤维，PVA纤维和Torex纤维增强的砂浆。描述了实验结果，重点是可维修性，非弹性行为，能量吸收以及与常规AASHTO混凝土面板的比较。根据调查结果，提议的甲板系统将按预期工作。对于应变硬化矩阵，即使增加了顶部钢筋，塑料铰链机制仍会在增加的载荷下形成，因此其响应性优于传统的钢筋混凝土甲板。与传统的钢筋混凝土甲板相比，拟议的甲板系统显示出更高的非弹性刚度，更高的延展性和更好的可维修性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号