In order to compare the fatigue performance of high-strength bolt-bolted reinforcement and bonded-bolted composite joint reinforcement of steel plates with initial defects,nine specimens were produced,the test was carried out by MTS for compression and bending fatigue loading,and the stress changes during the loading process and the damage patterns of the specimens were monitored and analyzed.The results show that:the presence of colloids in the bonded-bolted composite joint reinforcement can effectively reduce the stress level in the vicinity of the bolt holes and delay the generation of fatigue cracks;the fatigue life of the steel plate with initial defects is increased by 11.5 times by unilateral bolting reinforcement,and by 15.3 times by unilateral bonded-bolted composite joint reinforcement,the reinforcement of unilateral bonded-bolted composite joint has increased by 30％compared to unilateral bolting reinforcement.
关键词
栓接加固/胶栓组合连接加固/压弯疲劳/带初始缺陷钢板/疲劳寿命
Key words
bolted reinforcement/bonded-bolted composite joint reinforcement/compression and bending fatigue/steel plate with initial defects/fatigue life
维普
万方数据