地震作用下栓钉连接型钢高强混凝土柱

Under action of earthquake stud connectors of steel reinforced high strength concrete column performance

为解决实际工程中栓钉对型钢混凝土(HSRC)柱抗震效果的优化分析问题,采用有限元软件ABAQUS建立了含有栓钉的HSRC模型,以剪切连接件对HSRC柱的抗震性能的影响规律分析为切入点,采用实体单元来模拟栓钉剪切连接件,选取合适的本构方程进行数值模拟.在低周反复加载作用下,通过有限元模拟分析得出柱的轴压比、混凝土强度等级、栓钉间距大小在一定范围内对HSRC柱的抗震存在有利的影响,从而实现HSRC柱的优化设计,并从延性的结果确定出轴压比的合理范围,为以后的研究工作提供理论依据.

In order to solve the seismic effect that the behavior of HSRC with the effect of stud in actual engineering and the problem of optimizing the design, this paper established the HSRC with stud model by using finite element simulation software ABAQUS, and analyzed the seismic performance of HSRC columns with the consideration of the performance of stud shear connectors. This study took the connectors as a breakthrough point, and used the entity unit to simulate studs, and carried out numerical simulation by using appropriate constitutive equations. Under cyclic loading,through analysis of axial compression ratio, concrete strength grade, stud spacing size, come to the conclusion that these factors in a certain range will be beneficial for the seismic effect of HSRC columns to optimize the design. To determine the reasonable range of axial compression ratio through ductile results, this study provides a theoretical basis for the later research work.