基于不同构造形式半刚性节点的人字形中心支撑钢框架低周往复荷载试验研究

为研究装配式中心支撑半刚接钢框架结构的抗震性能,选取三种便于装配化施工的半刚性梁柱螺栓节点,即带腹板耳板的顶底角钢连接、外伸端板连接和T形钢连接,设计了3榀人字形中心支撑半刚接钢框架试件,进行低周往复荷载试验,对结构的滞回曲线、承载能力、耗能性能和刚度退化进行了研究,并对比分析不同半刚性节点钢框架的性能优劣。试验结果表明:试件滞回曲线饱满,抗侧承载力高,具有稳定可靠的耗能性能和塑性变形能力;结构在水平往复荷载作用下有明显的屈服和破坏过程,整体呈现延性破坏的特征;结构的塑性变形和损伤破坏主要集中在支撑体系,钢框架梁、柱残余变形小,半刚性节点没有产生塑性变形,结构具有两道抗震防线;半刚接钢框架和中...

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Published inJianzhu Gangjiegou Jinzhan pp. 75 - 84
Main Authors 杨融谦, 周学军
Format Journal Article
LanguageChinese
Published Editorial Department of Progress in Steel Building Structures, Tongji University 31.12.2021
Subjects
中心支撑钢框架
低周往复荷载试验
半刚性节点
抗震性能
抗震防线
Online AccessGet full text
ISSN1671-9379
DOI10.13969/j.cnki.cn31-1893.2021.12.008

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Abstract 为研究装配式中心支撑半刚接钢框架结构的抗震性能,选取三种便于装配化施工的半刚性梁柱螺栓节点,即带腹板耳板的顶底角钢连接、外伸端板连接和T形钢连接,设计了3榀人字形中心支撑半刚接钢框架试件,进行低周往复荷载试验,对结构的滞回曲线、承载能力、耗能性能和刚度退化进行了研究,并对比分析不同半刚性节点钢框架的性能优劣。试验结果表明:试件滞回曲线饱满,抗侧承载力高,具有稳定可靠的耗能性能和塑性变形能力;结构在水平往复荷载作用下有明显的屈服和破坏过程,整体呈现延性破坏的特征;结构的塑性变形和损伤破坏主要集中在支撑体系,钢框架梁、柱残余变形小,半刚性节点没有产生塑性变形,结构具有两道抗震防线;半刚接钢框架和中心支撑体系协同工作性能良好;经综合对比分析结构采用外伸端板连接时具有较优良的抗震性能。
AbstractList 为研究装配式中心支撑半刚接钢框架结构的抗震性能,选取三种便于装配化施工的半刚性梁柱螺栓节点,即带腹板耳板的顶底角钢连接、外伸端板连接和T形钢连接,设计了3榀人字形中心支撑半刚接钢框架试件,进行低周往复荷载试验,对结构的滞回曲线、承载能力、耗能性能和刚度退化进行了研究,并对比分析不同半刚性节点钢框架的性能优劣。试验结果表明:试件滞回曲线饱满,抗侧承载力高,具有稳定可靠的耗能性能和塑性变形能力;结构在水平往复荷载作用下有明显的屈服和破坏过程,整体呈现延性破坏的特征;结构的塑性变形和损伤破坏主要集中在支撑体系,钢框架梁、柱残余变形小,半刚性节点没有产生塑性变形,结构具有两道抗震防线;半刚接钢框架和中心支撑体系协同工作性能良好;经综合对比分析结构采用外伸端板连接时具有较优良的抗震性能。
Author 杨融谦
周学军
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SubjectTerms 中心支撑钢框架
低周往复荷载试验
半刚性节点
抗震性能
抗震防线
Title 基于不同构造形式半刚性节点的人字形中心支撑钢框架低周往复荷载试验研究
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