十字形PEC短柱偏压性能及承载力计算方法研究
采用有限元模拟和理论分析相结合的方法,研究了十字形PEC短柱的偏压力学性能并推导出其偏压承载力计算公式。首先利用ABAQUS有限元软件进行数值建模,分别考察在大偏压和小偏压作用下试件的破坏模式和破坏机理,并通过参数分析,研究混凝土强度、钢材强度、加载角和肢厚比等参数对试件力学性能的影响规律。研究结果显示:在大偏压和小偏压破坏时,主钢件均非全截面屈服,而是在中性轴附近存在弹性核;在小偏心受压时,提高混凝土强度等级可明显增加试件的极限承载力,而在大偏心受压时,提高混凝土强度等级对极限承载力的影响会随着偏心距的增大而减小;提高钢材强度等级无论在大、小偏压情况下均可有效提高十字形PEC柱的极限承载力。...
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Main Authors: | 李媛萍, 林启颖, 李国飞 |
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Format: | Article |
Language: | zho |
Published: |
Editorial Department of Progress in Steel Building Structures, Tongji University
2024-01-01
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Series: | Jianzhu Gangjiegou Jinzhan |
Subjects: | |
Online Access: | http://steelpro.tongji.edu.cn/thesisDetails?columnId=55201024&Fpath=home&index=0 |
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