【摘要】 针对建筑管道抗震支吊架理论研究落后于工程应用实践的现状,以某抗震支吊架为研究对象,采用有限元法分析抗震支吊架的力学性能。对比数值计算结果与支吊架室内拉伸试验结果,验证有限元建模的可靠性。针对3种不同地震波,对支吊架结构的地震响应进行瞬态时程分析,并对连接螺栓的拉伸强度进行校核,探讨水平加速度方向、斜撑厚度和安装角度变化对支吊架结构抗震性能的影响。结果表明:在3种地震波作用下,支吊架结构均满足强度要求,且连接螺栓也未发生破坏;当水平加速度侧向输入时,支吊架结构的受力响应最大;随着斜撑厚度的增加和安装角度的减小,支吊架结构的抗震性能增强。更多还原

【Abstract】 As to the issue that the theoretical studies of anti-seismic hanger of building pipe obviously lag behind their engineering applications,the mechanical behavior of anti-seismic hanger under seismic loading is studied using finite element method by taking an actual anti-seismic hanger product as the object. The numerical calculated results of the hangers are compared with the indoor tension test results,and then the reliability of the finite element modeling is verified. The mechanical performance of antiseismic hangers under three different seismic waves is studied using transient time history analysis. The tensile strength of the connection bolt is checked. The effects of the direction of horizontal acceleration,the thickness and the installation angle of the inclined brace on the anti-seismic performance of hangers are investigated. The results show that: the intensity of the anti-seismic hanger meets the requirements,and the connecting bolt is not been destroyed; the maximum mechanical response of anti-seismic hanger takes place when the horizontal acceleration acts in the lateral direction; with the increase of inclined support thickness and the decrease of installation angle,the anti-seismic performance of the hanger is enhanced.更多还原