【摘要】 密肋壁板结构中多种材料及构件的使用与嵌套,使实体计算模型比较复杂,故对于整体结构在地震动作用下的全过程受力分析,需提出结构的弹塑性简化计算模型。根据不同的分析目的,结合课题组前期研究成果,提出密肋壁板结构在弹塑阶段两种简化计算模型-刚架-等效斜压杆模型和刚架-整体斜撑模型。利用前期墙体拟动力试验研究结果,采用刚架-等效斜压杆模型对结构进行推覆及动力反应分析,验证模型的正确性;利用前期1/10比例振动台试验研究结果,采用刚架-整体斜撑模型对结构进行时程分析,验证刚架-整体斜撑模型的正确性。理论与试验表明:刚架-斜压杆模型具有一定的计算精度与实用性,适用于密肋复合墙体的非线性数值分析;刚架-整体斜撑模型兼顾高效性与精确性,适用于整体结构在大震下的弹塑性时程反应分析。更多还原

【Abstract】 A multi-ribbed slab structure consists of various materials and its components nest each other,thses makes the whole calculation model of the structure extremely complicated.Therefore,it is necessary to present an elasto-plastic model for the whole stressing process of the structure under strong seismic action.According to different analysis objectives,a rigid frame-equivalent diagonal strut model and a rigid frame-whole bracing model for an eco-composite wall structure in elastic-plastic stage were presented.According to the previous results of pseudo-dynamic test on the walls,the rigid frame-equivalent diagonal strut model was employed to perform push-over and dynamic response analysis,therefore,the validity of the model was verified.Based on the previous results of shaking table tests with 1 / 10 ratio,the rigid frame-whole bracing mode was employed to perform the time-history analysis,therefore,the validity of the model was also verified.Theoretical studies was and experimental analysis showed that the rigid frame-equivalent diagonal strut model possesses a certain calculation accuracy and feasibility and is suitable for nonlinear numberical analysis of multi-ribbed composite walls;the rigid frame-whole bracing model with higher accuracy and efficiency is applicable to structural elastic-plastic and time-history analysis under strong seismic action.更多还原