基于栓钉剪坏叠合板组合梁疲劳性能试验研究

摘要: 钢-混凝土组合梁在桥梁结构和吊车梁应用中的疲劳问题引起了人们的重视。通过对叠合板组合梁进行等幅荷载作用下的疲劳试验,对发生相同疲劳破坏形态的组合梁疲劳寿命采用双对数模型进行数据拟合,得到了发生栓钉剪坏疲劳破坏的叠合板组合梁的S-N曲线。结果表明:与欧洲钢结构协会(ECCS)规定十分接近,可用于组合桥梁的设计;叠合板组合梁与现浇板组合梁表现出了几乎相同的疲劳性能。
- 叠合板组合梁 /
- 疲劳寿命 /
- 等幅疲劳荷载 /
- 不完全剪力连接 /
- 应力幅
Abstract: The fatigue performance of composite beams in bridge structure and crane beam has attracted researchers' attention. The fatigue test of composite beam with laminated slabs under constant amplitude load was carried out. According to the fatigue test results,the data of fatigue life of composite beams with the same fatigue failure mode was fitted according to double logarithmic model. and the S-N curve of composite beams with stud shear failure was obtained. The results were very close to those of ECCS,which could be used to design bridge with the composite beam. Both of the composite beam with laminated plate and with cast-in-site plate showed almost the same fatigue performance.
- composite beam with laminated slabs /
- fatigue life /
- constant amplitude fatigue load /
- incomplete shear connection /
- stress amplitude

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