摘要
为了解高温下SRC柱-RC梁框架结构的耐火性能,通过使用ABAQUS分析软件建立了静力作用和火灾共同作用下SRC柱-RC梁框架有限元模型,并验证了模型的合理性,讨论分析了梁的荷载比、跨度以及混凝土抗压强度对梁破坏模式SRC柱-RC梁框架结构耐火极限的影响。发现:梁的荷载比、框架跨度对梁破坏模式下的SRC柱-RC梁框架的影响显著。在其他参数不变的前提下,提高框架混凝土抗压强度,耐火极限降低明显。
In order to understand the fire resistance performance of the SRC column-RC beam frame structure under high temperature,the finite element model of the SRC column-RC beam frame under the combined action of static and fire was established by using the ABAQUS analysis software.And verified the rationality of the model.Discuss and analyze the influence of beam load ratio,span and concrete compressive strength on the fire resistance limit of the beam failure mode SRC column-RC beam frame structure.It is found that the load ratio of the beam and the frame span have significant effects on the SRC column-RC beam frame under the beam failure mode.On the premise that other parameters remain unchanged,the compressive strength of frame concrete is increased,and the fire resistance limit is significantly reduced.
作者
陈少鹏
CHEN Shaopeng(Key Laboratory of Structure Engineering of Jiangsu Province,Suzhou University of Science and Technology,Suzhou 215011,China)
出处
《四川建材》
2022年第3期27-28,共2页
Sichuan Building Materials
关键词
梁破坏模式
SRC柱-RC梁框架
有限元模拟
耐火极限
beam failure mode
SRC column-RC beam frame
finite element simulation
fire resistance limit
