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Static and Fatigue Testing of High Performance Concrete Members

机译：高性能混凝土构件的静疲劳试验

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In the frame of an ongoing research project at the Carinthia University of Applied Sciences (CUAS)rnhigh strength concrete members reinforced with high strength steel and GFRP-bars have been testedrnunder static and fatigue loading. Beams with a span of 3.0 m and columns with a slenderness ratiornof 69 were tested under static loading. A series of beams reinforced with S670/800 steel was alsorntested under high cycle fatigue loading. The bond behaviour of the reinforcement was checked withrnpull-out tests. The column tests resulted predominantly in buckling failure. The behaviour of thernsteel-reinforced beams was satisfactory, resulting first in yielding of the steel and finally crushing ofrnthe concrete in the compressed zone. Under cyclic loading, the failure was mainly caused by thernfatigue of the reinforcement. In general the tests proved that the combination of high strengthrnconcrete with higher grade steel reinforcement leads to a better utilization of the concreterncompressive strength.
机译：在克恩顿州应用科学大学（CUAS）正在进行的研究项目的框架内，对在高强度混凝土构件中使用高强度钢和GFRP筋进行了测试，并在静态和疲劳载荷下进行了测试。在静态载荷下测试了跨度为3.0 m的梁和细长比为rnof 69的圆柱。在高周疲劳载荷下，还对一系列用S670 / 800钢加固的梁进行了测试。用拉出试验检查了钢筋的粘结性能。柱测试主要导致屈曲失败。钢梁的性能令人满意，首先导致钢筋屈服，最后导致压缩区域中的混凝土破碎。在循环荷载作用下，破坏主要是由于钢筋的疲劳引起的。总的来说，试验证明，高强度混凝土与更高等级的钢筋的结合可以更好地利用混凝土的抗压强度。

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