论文部分内容阅读
重庆西永综保区监管大楼办公主楼为大跨度连体结构,连体跨度58.6m,连接体底部与顶部均采用钢结构桁架与两侧的筒体形成巨型框架。采用SAP2000进行了弹塑性时程分析,分析表明:筒体剪力墙混凝土压应力小于其抗压强度,钢筋尚未屈服,满足剪力墙大震不屈服的性能目标;连接体及其相邻部位剪力墙存在刚度突变,可能形成薄弱层;地震波竖向地震作用均值与重力荷载代表值的比为0.07,说明竖向地震作用明显,竖向地震作用效应不可忽略。
The main office building of the supervision building in Xiyong Comprehensive Protection Area in Chongqing is a large-span Siamese structure with a span of 58.6m. The bottom and the top of the connecting body are both made of steel truss and cylinder body on both sides to form a giant frame. The elasto-plastic time-history analysis is carried out with SAP2000. The analysis shows that the compressive stress of the concrete-filled shear wall is less than its compressive strength, and the reinforcement has not yet surrendered to meet the performance target of the yielding of the shear wall. There is a sudden change in stiffness of the shear wall, which may form a weak layer. The ratio of the mean value of seismic vertical seismic action to the gravity load representative value is 0.07, indicating that the vertical seismic action is obvious and the vertical seismic action effect can not be neglected.