密肋壁板结构弹塑性计算模型研究  

Elasto-plastic models of a multi-ribbed slab structure

作　　者：黄炜[1] 张程华[1] 姚谦峰[1,2] 陈国新[1,3] 荆罡[1] 侯莉娜[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]北京交通大学土木建筑工程学院,北京100044 [3]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《振动与冲击》2011年第2期233-237,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50908188;50878021);国家"十一五"科技支撑项目(2006BAJ04A02-5;2008BAJ08B011-03);陕西省13115项目(2008ZDKG-76);陕西省教育厅自然科学专项基金(2010JK622);陕西省重点学科建设专项资金资助项目(E01001;E01003)

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。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.

关 键 词：密肋壁板结构 刚架-等效斜压杆模型 刚架-整体斜撑模型 

分 类 号：TU311.1[建筑科学—结构工程] TU311.4