预压装配式混凝土框架损伤分析
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摘要
基于一榀预压装配式预应力混凝土框架拟静力试验,了解了试验框架损伤模式和破坏过程,得到加载过程中框架位移滞回曲线。采用结构延性比损伤指标和刚度参数的损伤指标计算试验结构的损伤指数,并将计算结果与试验现象进行对比。分析结果表明,基于结构刚度参数的损伤评估模型能较好反应结构在各个受力阶段的破坏程度;延性比损伤评估模型简单直观,可作为辅助评估模型。
Based on the pseudo static test of a post-tensioned fabricated concrete frame,the paper investigate the damage mode and the failure process of the frame,as well as the load-displacement hysteresis curves of frame in the loading process.The paper calculates the test frame's damage index based on both the ductility ratio and the stiffness parameter,and compares the calculated results with experimental performance.The results show that the damage assessment model based on stiffness parameter can better explain structure's damage degree in each phase,while the damage model based on ductility ratio is easy and can be used as an auxiliary assessment model.
Based on the pseudo static test of a post-tensioned fabricated concrete frame,the paper investigate the damage mode and the failure process of the frame,as well as the load-displacement hysteresis curves of frame in the loading process.The paper calculates the test frame's damage index based on both the ductility ratio and the stiffness parameter,and compares the calculated results with experimental performance.The results show that the damage assessment model based on stiffness parameter can better explain structure's damage degree in each phase,while the damage model based on ductility ratio is easy and can be used as an auxiliary assessment model.
引文
1徐远征.预压装配式预应力混凝土框架结构研究及发展前景[A].第四届全国预应力结构理论与工程应用学术会议论文集综述[C].北京:工业建筑杂志社,2006:135-138.
2徐远征.地震力作用下钢筋混凝土框架结构损伤演化研究及数值模拟[D].河北:河北工业大学,2004.
3章永乐,蒋建群.基于损伤的框架结构抗震设计的研究[J].低温建筑技术,2010,6(2):74-75.
4张品乐.短肢剪力墙抗震性能试验研究及损伤分析[D].西安:西安建筑科技大学,2011.
5蔡秋琦,高磊,王君杰.结构损伤指标研究综述[J].结构工程师,2010,26(4):144-153.
6李洪泉,欧进萍.剪切型钢筋混凝土结构的地震损伤识别方法[J].哈尔滨建筑大学学报,1996,29(2):8-12.
2徐远征.地震力作用下钢筋混凝土框架结构损伤演化研究及数值模拟[D].河北:河北工业大学,2004.
3章永乐,蒋建群.基于损伤的框架结构抗震设计的研究[J].低温建筑技术,2010,6(2):74-75.
4张品乐.短肢剪力墙抗震性能试验研究及损伤分析[D].西安:西安建筑科技大学,2011.
5蔡秋琦,高磊,王君杰.结构损伤指标研究综述[J].结构工程师,2010,26(4):144-153.
6李洪泉,欧进萍.剪切型钢筋混凝土结构的地震损伤识别方法[J].哈尔滨建筑大学学报,1996,29(2):8-12.
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