钢锚板式钢-混凝土组合索塔锚固体系黏结滑移性能影响因素分析

在研究钢锚板式钢-混凝土组合索塔锚固体系极限承载力时,发现钢锚板与塔柱混凝土之间的黏结滑移是一种主要破坏形式。影响钢锚板式钢-混凝土组合索塔锚固体系钢-混凝土黏结性能的主要因素有混凝土强度、钢锚板厚度、钢锚板穿孔钢筋(PBL剪力键)数量和位置、隔板数量和位置。通过数值模拟方法,对钢锚板式钢-混凝土组合索塔锚固体系的黏结滑移性能的主要影响参数进行了数值分析。分析结果表明,常用混凝土强度对钢板-混凝土滑移性能没有明显影响;钢板厚度对钢板-混凝土滑移性能影响最为明显,钢板厚度由30mm变为50mm,自由端滑移量减小了34%。但是随着钢板厚度的增加钢材的强度会降低,质量难以保证。PBL剪力键和加劲板的...

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Published inJianzhu Gangjiegou Jinzhan pp. 43 - 52
Main Authors 谭冬莲, 李杏, 秦凤江
Format Journal Article
LanguageChinese
Published Editorial Department of Progress in Steel Building Structures, Tongji University 28.02.2021
Subjects
Online AccessGet full text
ISSN1671-9379
DOI10.13969/j.cnki.cn31-1893.2021.02.005

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Abstract 在研究钢锚板式钢-混凝土组合索塔锚固体系极限承载力时,发现钢锚板与塔柱混凝土之间的黏结滑移是一种主要破坏形式。影响钢锚板式钢-混凝土组合索塔锚固体系钢-混凝土黏结性能的主要因素有混凝土强度、钢锚板厚度、钢锚板穿孔钢筋(PBL剪力键)数量和位置、隔板数量和位置。通过数值模拟方法,对钢锚板式钢-混凝土组合索塔锚固体系的黏结滑移性能的主要影响参数进行了数值分析。分析结果表明,常用混凝土强度对钢板-混凝土滑移性能没有明显影响;钢板厚度对钢板-混凝土滑移性能影响最为明显,钢板厚度由30mm变为50mm,自由端滑移量减小了34%。但是随着钢板厚度的增加钢材的强度会降低,质量难以保证。PBL剪力键和加劲板的数量对钢板-混凝土滑移性能影响较为明显。因此,优化PBL剪力键和加劲板的设置,是提高钢锚板与混凝土之间黏结性能的有效措施。
AbstractList 在研究钢锚板式钢-混凝土组合索塔锚固体系极限承载力时,发现钢锚板与塔柱混凝土之间的黏结滑移是一种主要破坏形式。影响钢锚板式钢-混凝土组合索塔锚固体系钢-混凝土黏结性能的主要因素有混凝土强度、钢锚板厚度、钢锚板穿孔钢筋(PBL剪力键)数量和位置、隔板数量和位置。通过数值模拟方法,对钢锚板式钢-混凝土组合索塔锚固体系的黏结滑移性能的主要影响参数进行了数值分析。分析结果表明,常用混凝土强度对钢板-混凝土滑移性能没有明显影响;钢板厚度对钢板-混凝土滑移性能影响最为明显,钢板厚度由30mm变为50mm,自由端滑移量减小了34%。但是随着钢板厚度的增加钢材的强度会降低,质量难以保证。PBL剪力键和加劲板的数量对钢板-混凝土滑移性能影响较为明显。因此,优化PBL剪力键和加劲板的设置,是提高钢锚板与混凝土之间黏结性能的有效措施。
Author 李杏
秦凤江
谭冬莲
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SubjectTerms 影响因素
斜拉桥
钢-混凝土组合索塔锚固体系
钢锚板
黏结滑移性能
Title 钢锚板式钢-混凝土组合索塔锚固体系黏结滑移性能影响因素分析
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