钢管再生混凝土混合柱框架恢复力模型研究

为了探究钢管再生混凝土混合柱框架的抗震性能,设计4榀圆钢管再生混凝土混合柱框架并对其进行低周往复荷载试验,以混凝土取代率、柱截面含钢率为参数变量得到混合柱框架的梁端、柱脚及核心区的应变分布规律、滞回曲线和骨架曲线。结果表明,4榀混合柱框架的滞回曲线均饱满呈梭形,说明框架延性性能较好;骨架曲线在进入弹塑性阶段后更平缓,说明框架的耗能能力和抗震性能均较好;梁端塑性铰位置出现在30～90mm范围内,柱脚塑性铰位置出现在40～100mm范围内,说明梁端及柱脚的高应力区存在于这两个位置,设计时应考虑在此薄弱区进行加强。根据钢管再生混凝土混合柱框架在低周往复荷载作用下的滞回规则,得到荷载-位移滞回曲线恢复...

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Published inJianzhu Gangjiegou Jinzhan pp. 40 - 49
Main Authors 闻洋, 姜雯丽霞, 韩洪鹏, 付立平
Format Journal Article
LanguageChinese
Published Editorial Department of Progress in Steel Building Structures, Tongji University 01.06.2019
Subjects
低周往复荷载
再生混凝土
恢复力模型
框架
滞回曲线
Online AccessGet full text
ISSN1671-9379
DOI10.13969/j.cnki.cn31-1893.2019.03.005

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Abstract 为了探究钢管再生混凝土混合柱框架的抗震性能,设计4榀圆钢管再生混凝土混合柱框架并对其进行低周往复荷载试验,以混凝土取代率、柱截面含钢率为参数变量得到混合柱框架的梁端、柱脚及核心区的应变分布规律、滞回曲线和骨架曲线。结果表明,4榀混合柱框架的滞回曲线均饱满呈梭形,说明框架延性性能较好;骨架曲线在进入弹塑性阶段后更平缓,说明框架的耗能能力和抗震性能均较好;梁端塑性铰位置出现在30～90mm范围内,柱脚塑性铰位置出现在40～100mm范围内,说明梁端及柱脚的高应力区存在于这两个位置,设计时应考虑在此薄弱区进行加强。根据钢管再生混凝土混合柱框架在低周往复荷载作用下的滞回规则,得到荷载-位移滞回曲线恢复力模型。将模型计算与试验结果得出的关系曲线进行对比,得出两种滞回曲线差距控制在4%～7%范围内,验证了分析模型的准确性。
AbstractList 为了探究钢管再生混凝土混合柱框架的抗震性能,设计4榀圆钢管再生混凝土混合柱框架并对其进行低周往复荷载试验,以混凝土取代率、柱截面含钢率为参数变量得到混合柱框架的梁端、柱脚及核心区的应变分布规律、滞回曲线和骨架曲线。结果表明,4榀混合柱框架的滞回曲线均饱满呈梭形,说明框架延性性能较好;骨架曲线在进入弹塑性阶段后更平缓,说明框架的耗能能力和抗震性能均较好;梁端塑性铰位置出现在30～90mm范围内,柱脚塑性铰位置出现在40～100mm范围内,说明梁端及柱脚的高应力区存在于这两个位置,设计时应考虑在此薄弱区进行加强。根据钢管再生混凝土混合柱框架在低周往复荷载作用下的滞回规则,得到荷载-位移滞回曲线恢复力模型。将模型计算与试验结果得出的关系曲线进行对比,得出两种滞回曲线差距控制在4%～7%范围内,验证了分析模型的准确性。
Author 闻洋
姜雯丽霞
韩洪鹏
付立平
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SubjectTerms 低周往复荷载
再生混凝土
恢复力模型
框架
滞回曲线
Title 钢管再生混凝土混合柱框架恢复力模型研究
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