【摘要】 本文对烟囱在水平与竖向地震动分量联合作用下的反应进行了分析,分析中考虑了包含竖向地震动的几何非线性的影响。分析结果表明,水平地震应力起主要作用,竖向地震应力也不可完全忽视,在上部它可达重力应力的50％—90％。几何非线性对水平地震应力的影响较小。本文还对烟囱竖向地震荷载进行了分析,给出了竖向地震荷载的近似计算公式。更多还原

【Abstract】 Seismic response of chimneys to combined horizontal and vertical ground motion is analysed in this paper. The effect of the geometric nonlinearity including vertical ground motion is considered. The results of the analysis show that the vertical stress σN can not be neglected completely although the horizontal seismic stress σM is a controlling part. At the upper part of chimney σN could reach 50-90 percent of gravity stress σg.The analysis of vertical seismic load of chimney is carried out and the approximate formulas for vertical seismic loads are also suggested in this paper.更多还原