Review of Current AASHTO Fatigue Design Specifications for Stud Shear Connectors
Review of Current AASHTO Fatigue Design Specifications for Stud Shear Connectors
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DOI：
10.1061/41130(369)29
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
K.C. Lee;H. Abbas;G. Ramey
中科院分区：
文献类型：
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作者：
K.C. Lee;H. Abbas;G. Ramey
现行AASHTO LRFD桥梁设计规范中栓钉剪力连接件的疲劳设计规定基于Slutter和Fisher在20世纪60年代中期进行的研究，他们测试了44个推出试样以确定剪力连接件的疲劳寿命。通过对Slutter和Fisher提供的试验数据进行分析，并将AASHTO现行设计规定与欧洲和日本的设计规定进行比较，发现AASHTO可能严重低估了栓钉剪力连接件的疲劳寿命，尤其是在大多数桥梁设计的疲劳性能范围内。一个设计实例表明，根据AASHTO所需的螺柱的数量可以在欧洲和日本的其他设计规范所需的数量的两倍以上。这种差异的一个可能的原因进行了讨论。
Fatigue design provisions for stud shear connectors in the current AASHTO LRFD Bridge Design Specifications are based on the research conducted in the mid 1960s by Slutter and Fisher, who tested 44 push-out specimens to determine the fatigue life of the shear connector. An analysis of test data produced by Slutter and Fisher and an examination of the current AASHTO design provisions in comparison with their European and Japanese counterparts suggest that the AASHTO may significantly underestimate the fatigue life of stud shear connectors, especially in the range of fatigue behavior where most bridges are designed. A design example is presented that demonstrates that the required number of studs according to the AASHTO can be more than twice the number required by other design codes in Europe and Japan. A possible reason for this discrepancy is discussed.