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首页> 外文会议>International Conference on Composite Construction in Steel and Concrete; 20040718-23; Mpumalanga(ZA) >The cyclic force-slip behaviour of headed studs under non static service loads - experimental studies and analytical descriptions
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The cyclic force-slip behaviour of headed studs under non static service loads - experimental studies and analytical descriptions

机译：非静态载荷下带头螺栓的循环力滑行为-实验研究和分析描述

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The paper deals with new research results on the fatigue behaviour of embedded composite shear studs. Measurements of the slip-behaviour of real two-span composite girders with realistic cyclic loading allow conclusions to simulate the behaviour by so called cyclic displacement-controlled Push-Out-Tests. It can be shown that a displacement-controlled Push-Out-Test simulates far better the slip-behaviour of a composite girder than conventional load-controlled Push-Out-Tests. By using the test data from displacement-controlled Push-Out-Tests models are presented to describe the cyclic load-displacement behaviour. A slip-oriented Wohler-line has been developed. In a second step the crack propagation of the studs during cyclic loading has been observed. Correlations between crack-propagation and number of load cycles can be derived. It can be shown, that fatigue of shear studs is dominated by crack propagation.
机译：本文研究了嵌入式复合材料抗剪栓钉疲劳性能的新研究成果。对实际两跨组合梁在实际循环荷载作用下的滑移特性进行测量，可以得出结论，即通过所谓的循环位移控制推入试验来模拟其行为。可以看出，与传统的载荷控制的推挤试验相比，位移控制的推挤试验模拟的复合梁的滑移性能要好得多。通过使用位移控制的Push-Out-Tests模型中的测试数据来描述循环载荷-位移行为。已经开发出了一条滑动导向的Wohler线。在第二步骤中，已经观察到在循环载荷期间双头螺栓的裂纹扩展。可以得出裂纹扩展与载荷循环次数之间的相关性。可以看出，抗剪栓钉的疲劳主要由裂纹扩展引起。

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