高烈度区大高宽比高层钢结构抗震性能研究  

Study on Seismic Behavior of High-Rise Steel Structures with Large Height-to-width Ratio in High Intensity Seismic Region

作　　者：吴宏磊 杨博雅 丁洁民 WU Honglei;YANG Boya;DING Jiemin(Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《结构工程师》2020年第4期58-64,共7页Structural Engineers

摘　　要：针对《高层民用建筑钢结构技术规程》(JGJ 99-2015)对钢结构民用建筑建议的高宽比限值,通过变化高度以及变化宽度两种方法获得设计一系列不同高宽比的钢框架-支撑结构,并通过PERFORM-3D软件分析各模型结构进行弹性和弹塑性分析,研究各模型在多遇及罕遇地震下的层间位移角、楼层剪重比以及结构受拉情况,依据损伤理论计算了各模型结构的整体损伤,进而对其损伤的程度进行了判定。同时,对超过规范高宽比限值结构的设计给出了建议。Considering the recommended limit of height-to-width ratio of steel structures in Technical specification for steel structure of tall buildings(JGJ 99—2015),a series of steel frame-brace structures with different height-width ratios were designed.Elastic and elastic-plastic analyses were performed on these models with PERFORM-3D software.The story drift ratio,story shear-gravity ratio and tension distribution of each model were studied under frequent and rare earthquakes.To determine the corresponding damage degree,the damages in the entire structure of each model were calculated based on damage theory.Meanwhile,design advices for large height-to-width ratio structure were put forward.

关 键 词：高层建筑 钢框架-支撑结构 高宽比 损伤评价 

分 类 号：TU973.31[建筑科学—结构工程] TU973.13