高层筒体结构弹塑性地震反应分析的样条积层有限条法  

Inelastic analysis of response of RC concrete tubular structure to earthquake using SILFE method

作　　者：夏逸鸣[1] 江世永[2] 吴胜兴[3] 

机构地区：[1]南京航空航天大学土木工程系,江苏南京210016 [2]解放军后勤工程学院建筑工程系,重庆400411 [3]河海大学土木工程学院,江苏南京210096

出　　处：《振动工程学报》2008年第5期498-504,共7页Journal of Vibration Engineering

摘　　要：采用三次B样条积层有限条方法对结构进行离散,推导出结构的静平衡力、惯性力、地震力及其阻尼力的节点位移的表达式,由达朗贝尔原理,得到结构的动力平衡方程,采用预校正形式的N ewm ark法求解结构的动力方程。另外,根据等向强化准则,处理受压区混凝土材料及钢筋材料的弹塑性本构关系;应用分布裂缝模式,解决受拉区混凝土的开裂问题,由此实现了筒体结构的弹塑性地震反应分析,最后通过实例比较分析,验证了方法的正确性与高效性。In this paper, the cubic B spline integrated layer finite stripe model is adopted to discretize the structure. On the basis of that, the static balance, the inertia, the earthquake and the damping forces for the structure are derived, which are represented by the node displacements. The dynamic equation for the structure is formulated by application of the Dalabert principle and solved by pre-adjustment Newmark method. In addition, the concrete under pressure and the steel are both han- dled by the elastic-plastic model of the uniform hardening rule, the concrete under tension is treated by the smear cracking model. Through that, the analysis of the inelastic response of the structure to earthquake is implemented. Finally, a real example is given to illustrate the validity and high efficiency of the proposed method.

关 键 词：钢筋混凝土筒体 弹塑性分析 地震反应 三次B样条 积层有限条 

分 类 号：TU973.17[建筑科学—结构工程] TU311.3