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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

41卷

期数:

2024年01期

页码:

52-68

栏目:

综述

出版日期:

2024-01-20

文章信息/Info

Title:

Research progress of punching shear performance of reinforced concrete slab-column joints

文章编号:

1673-2049(2024)01-0052-17

作者:

郑山锁^1,2,杜宜阳¹,梁泽田^1,2,宋枳含¹

(1. 西安建筑科技大学 土木工程学院,陕西 西安 710055; 2. 西安建筑科技大学 结构工程与抗震教育部重点实验室,陕西 西安 710055)

Author(s):

ZHENG Shansuo^1,2, DU Yiyang¹, LIANG Zetian^1,2, SONG Zhihan¹

(1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China)

关键词:

板柱节点;  抗冲切元件;  抗冲切承载力;  预测模型;  开洞板柱试件;  机器学习

Keywords:

slab-column joint;  anti-punching shear element;  anti-punching shear capacity;  prediction model;  slab-column specimen with opening;  machine learning

分类号:

TU375

DOI:

10.19815/j.jace.2023.06058

文献标志码:

A

摘要:

为提高板柱节点冲切性能从而促进其工程应用,比较了各类抗冲切元件的不同布置形式、形状尺寸、几何参数以及组合形式对节点抗冲切承载力的影响,概括了受损板柱节点修复与加固的研究现状,梳理了不同开洞尺寸、距离、数量、形状及偏心荷载作用下开洞板柱试件抗冲切性能的研究成果,归纳了有无抗冲切钢筋和配置型钢剪力架板柱节点的抗冲切承载力计算方法以及基于机器学习的板柱节点冲切承载力预测方法。结果表明:各类抗冲切元件可通过改变布置形式、形状尺寸、几何参数以及元件组合从而改善板柱节点的冲切性能; 板件开洞的尺寸越大、距离越远、数量越多,对节点的抗冲切性能越不利; 基于数值模拟和规范改进得出的冲切承载力计算公式仅对特定试验有较高的预测精度,尚未形成较为统一的承载力计算公式,而基于机器学习的冲切承载力预测模型是未来研究的重点; 需进一步开展关于受损板柱节点修复与加固方法的研究,对完善板柱节点抗冲切性能研究理论体系具有重要意义。

Abstract:

In order to improve the anti-punching shear performance of slab-column joints and thus promote its engineering application, the effects of different arrangement forms, shapes and sizes, geometric parameters and combinations forms of various types of anti-punching shear elements on the anti-punching shear bearing capacity of the joints were compared. The research status of repair and reinforcement of damaged slab-column joints was summarized. The research results on the anti-punching shear performance of slab-column specimens with openings under different openings sizes, distances, numbers, shapes and eccentric loads were sorted out. The calculation method of the anti-punching shear bearing capacity of slab-column joints with and without the punching shear reinforcement and configuration of steel shear frame, and the prediction method of the anti-punching shear bearing capacity of slab-column joints based on machine learning were summarized. The results show that the various types anti-punching shear elements can improve the punching shear performance of slab-column joints by changing the arrangement forms, shape and size, geometric parameters and the combination of elements. The larger the size, farther the distance and more the number of openings in the slab, the more unfavorable the anti-punching shear performance of the joints. The anti-punching shear bearing capacity calculation formula based on numerical simulation and specification improvement only have high prediction accuracy for specific tests, has not yet formed uniform bearing capacity calculation formula, and the prediction model of punching shear bearing capacity based on machine learning is the focus of future research. In addition, further research on the repair and reinforcement methods of damaged slab-column joints is also of great significance for improving the theoretical system of anti-punching performance of slab-column joints.

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相似文献/References:

[1]党隆基,梁书亭,庞 瑞,等.ECC/RC空心楼盖板柱节点抗冲切性能[J].建筑科学与工程学报,2019,36(01):93.
　DANG Long-ji,LIANG Shu-ting,PANG Rui,et al.Punching Shear Behavior of ECC/RC Hollow Floor Slab�瞔olumn Connection[J].Journal of Architecture and Civil Engineering,2019,36(01):93.

备注/Memo

备注/Memo:

收稿日期:2023-06-15
基金项目:国家重点研发计划项目(2019YFC1509302); 国家自然科学基金项目(52278530); 陕西省重点研发计划项目(2021ZDLSF06-10)
作者简介:郑山锁(1960-),男,工学博士,教授,博士生导师,E-mail:zhengshansuo@263.net。
通信作者:梁泽田(1997-),男,工学博士研究生,E-mail:liangzetian6@163.com。

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更新日期/Last Update: 2024-01-25