摘要
城市区域高层结构的地震损伤模拟有着重要的意义。考虑到当前适用于区域高层结构地震损伤预测的研究较少,提出了一套适用于区域震害模拟的高层结构地震损伤预测方法。该方法以弹塑性弯剪模型时程分析得到的结构响应结果为基础,是一套基于构件损伤的结构损伤预测方法。本方法将高层结构中的抗侧力构件分为层间位移角敏感型构件和曲率敏感型构件。对于层间位移角敏感的框架以及连梁构件,分别给出了基于位移限值的损伤预测方法;对于曲率敏感的剪力墙墙肢构件,提出了基于构件能力曲线关键点的损伤预测方法。为了验证所提的损伤预测模型,对5栋高层结构开展了对比分析。将提出的方法与精细有限元模型进行了对比,结果表明所提区域高层结构损伤预测方法能较好地预测高层结构中各构件的损伤程度。最后对北京CBD高层区域进行了模拟,进一步展示了所提方法的效果。
It is of great Considering the limited prediction method for re significance to simulate the seismic damage of highrise building structures in urban areas research on regional seismic damage prediction of highrise building structures, a damage gional seismic damage simulation of highrise building structures was proposed. Taking ad- vantage of the structural seismic response shear model, the structural damages were results generated by the time-history analysis of the elastoplastic flexural predicted through the damage states of each type of component. Specific- ally, lateral force resisting components were divided into inter-story drift angle sensitive components and curvature sensitive components. For the interstory drift angle sensitive frame and coupling beam components, interstory drift limits were recommended for such type of components; for curvature sensitive shear wall pier components, limits based on the key points of the component capacity curve were also proposed. To verify the proposed damag damag e e prediction method, comparative analysis of 5 highrise building structures was conducted between the proposed meth- od and fine FEM model. Results show that, the proposed method may reasonably estimate the damage states of each type of component. The method is also applied to the highrise building area of Beijing central business district （CBD） , which shows the effectiveness of the proposed method.
出处
《自然灾害学报》
CSCD
北大核心
2016年第6期69-78,共10页
Journal of Natural Disasters
基金
国家科技支撑计划项目(2015BAK14B02)~~
关键词
高层结构
损伤预测
区域震害模拟
时程分析
弹塑性弯剪模型
highrise structures
damage prediction
regional seismic damage simulation
time -history analysis
elastoplastic flexural shear model
