箱板式钢结构住宅底部加强区组合钢板墙有限元分析和抗剪承载力计算式  

FINITE ELEMENT ANALYSIS AND SHEAR CAPACITY FORMULA OF THE COMPOSITE STEEL PLATE SHEAR WALL AT THE BOTTOM REINFORCED AREA OF BOX-TYPE STEEL STRUCTURE RESIDENTIAL BUILDINGS

作　　者：兰涛[1,2] 郭琳颖 门进杰 赵廷涛[1] 秦广冲[2] LAN Tao,GUO Linying,MEN Jinjie,ZHAO Tingtao,QIN Guangchong(1.School of Civil Engineering, Xi＇an University of Architecture ＆ Technology, Xi＇an 710055, China;2.CSIC International Engineering Co. Ltd, Beijing 100021, China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]中国船舶重工集团国际工程有限公司,北京100021

出　　处：《工业建筑》2018年第9期28-35,共8页Industrial Construction

基　　金：国家重点研发计划项目(2017YFC0703406);首规委支持科研基金项目(2017-016);陕西省教育厅重点实验室项目(17JS062)

摘　　要：为了建立箱板式钢结构住宅底部加强区组合钢板墙的抗剪承载力计算式，在前期试验研究的基础上，设计了16个模型试件，对影响组合钢板墙抗剪承载力的关键参数进行了有限元分析，探讨了钢板墙的高厚比、肋板刚度比等对组合钢板墙抗震性能的影响规律，分析了试件的破坏模式、滞回曲线、骨架曲线、承载力和刚度退化等。结果表明：墙板的高厚比越大，钢板越容易产生面外屈曲形成拉力带，滞回曲线捏缩越明显，屈服承载力和极限承载力越低。高厚比越小，组合钢板墙的抗侧刚度越大，但在受力后期，刚度退化速度较快。肋板刚度比对初始弹性刚度和滞回性能的影响不明显。基于分析结果，提出了组合钢板墙的合理破坏模式，并通过参数分析和回归分析，得到了组合钢板墙的抗剪承载力计算式。算例分析表明：所提计算式可用于计算组合钢板墙的抗剪承载力。In order to establish the formula of the shear capacity of the composite steel plate wall at the bottom reinforced area of box-type steel structure residential buildings, 16 model specimens were designed on the basis of the previous experimental research. The key parameters affecting the shear capacity of the composite steel plate wall were analyzed by finite element analysis, and the height-thickness ratio of the steel plate wall and the stiffness of the rib plate were discussed. The failure mode, hysteresis curve, skeleton curve, bearing capacity and stiffness degradation of the specimen were analyzed. The results showed that the greater the height-thickness ratio was, the easier the steel plate was subjected to out-of-plane buckling to form the tensile belt; the hysteresis curve was not full, the yield bearing capacity and the uhimate bearing capacity were lower. The smaller the height-thickness ratio, the greater the lateral stiffness of composite steel plate walls. However, in the later stage of loading, the stiffness degraded in a fast speed. The stiffness ratio of the ribbed plate had little effect on the initial elastic stiffness and hysteretic behavior. Based on the analysis results, the reasonable failure mode of the composite steel plate wall was put forward, and the formula of shear bearing capacity of the composite steel plate wall was obtained by parameter analysis and regression analysis. The calculation example showed that the formula could be used to calculate the shear bearing capacity of the composite steel plate wall.

关 键 词：箱板式钢结构 底部加强区墙体 有限元分析 钢板高厚比 肋板刚度比 

分 类 号：TU392.4[建筑科学—结构工程]