【摘要】 为了保证建筑物功能完好、减小经济损失和方便灾后救援,有必要对地震激励下建筑物中管道系统的抗震性能进行准确评估和合理设计。开展了建筑物中管道系统地震响应计算方法的研究工作,基于虚拟激励法对管道系统地震响应表达式进行了理论推导,继而指出前人所提方法存在显著缺陷:其无法计算管道系统支撑附近自由度的相对位移,为弥补此缺陷,修正相应理论基础,推导了基于地面反应谱的管道系统地震响应计算的统一表达式,并采用地震白噪声假定给出了简化公式。通过数值算例验证了方法的有效性,并阐述了其实际应用范围。更多还原

【Abstract】 In order to ensure the function of building in the earthquake,reduce economic losses and facilitate post-disaster relief,it is necessary to accurately evaluate the seismic performance of pipeline system on the structure under seismic excitation.Considering this practical need,seismic response calculation methods of piping systems on structures were systematically studied.Firstly,theoretical derivation was performed based on the pseudo-excitation method for seismic response of pipeline system.It is found that the formula in previous studies has obvious defect: the accurate relative displacement values of degree of freedom near the supports can not be obtained in the formula.Thereby,the theoretical basis for derivation was mended to correct the defect,and the uniform combination expressions available for pipeline’s seismic response calculation which is in the form of ground response spectrum or floor response spectrum were presented.Moreover,the simplified formulas and calculation method of correlation coefficients in the obtained expressions were put forward according to the assumption of white noise earthquake excitation.Finally,case studies were adopted to verify the proposed method’s effectiveness and applicability in the seismic response calculation of pipeline system.更多还原