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首页> 外文会议>International Conference on Current and Future Trends in Bridge Design, Construction and Maintenance 2: Safety, Economy, Sustainability and Aesthetics, Apr 25-26, 2001, Hong Kong >Full Scale Testing of High Performance Concrete Bridge Beams with In-Situ Slabs
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Full Scale Testing of High Performance Concrete Bridge Beams with In-Situ Slabs

机译：高性能混凝土桥梁梁的现场测试

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摘要

This paper reports on a series of full scale load tests carried out on three high performance concrete bridge beams with cast in-situ slabs. Three prestressed concrete beams with strengths of 75 N/mm~2 were constructed. 1m wide slabs with strengths of 25, 50 and 75 N/mm~2 were poured on top of the beams. The development of the concrete mixes for the beams and slabs is discussed. The beams were tested to loads that exceeded their expected capacities. One of the beams was tested to complete collapse while the other two were loaded well past their serviceable limits. Details of the loading arrangements and instrumentation are given in the paper. Moment deflection curves are presented for each of the test beams and for one beam in particular, the moment deflection curve is given for three repeated cycles of loading and unloading. This shows the extent of recovery. The neutral axis location at each load increment is shown for each of the three tests. A moment curvature graph is also shown. Comparisons are made between theoretical serviceability and ultimate capacities and those attained in the tests. In all cases the expected moment capacities were exceeded. A discussion is also presented on the longitudinal and interface shear capacities.
机译：本文报告了在三个高性能混凝土现浇板桥梁上进行的一系列满载测试。构造了三个强度为75 N / mm〜2的预应力混凝土梁。将强度为25、50和75 N / mm〜2的1m宽平板浇在梁的顶部。讨论了梁和楼板混凝土配合料的开发。对梁进行了超过其预期容量的载荷测试。其中一根横梁经过测试可完全塌陷，而另外两根横梁的载荷已远远超过其可用极限。本文中提供了有关装载安排和仪器的详细信息。给出了每个测试梁的弯矩挠度曲线，特别是对于一个测试梁，给出了三个重复的加载和卸载循环的弯矩挠度曲线。这显示了恢复程度。对于三个测试中的每一个，都显示了每个负载增量时的中性轴位置。还显示了力矩曲率图。比较理论上的可使用性和最终能力与测试中获得的能力。在所有情况下，都超出了预期的力矩能力。还讨论了纵向和界面剪切能力。

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