In order to study the bonding performance of high strength concrete filled steel tube after high temperature,a model was established by the finite element software ABAQUS and verified with the test results.The results showed that the bonding stress of high-strength concrete columns increased first and then decreased with the increase of temperature;the bonding stress increased with the increase of concrete strength and decreased with the increase of the diameter-thickness ratio.In the range of L/D ratio of 2.74～7.72,the adhesion gradually increased with the increase of L/D ratio.The rate of failure of the bond interface slowed down with the increase of temperature,and the energy dissipation factor increased first and then decreased with the increase of temperature.
关键词
高温/黏结滑移/钢管高强混凝土柱/耗能因子/有限元模拟
Key words
high temperature/bond slip/high strength concrete filled steel tube columns/energy dissipation factor/finite element simulation
维普
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