Experimental and theoretical research of the punching shear performance of steel‐normal concrete‐UHPC composite slabs

IF 3 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Structural Concrete Pub Date : 2024-07-24 DOI:10.1002/suco.202400158

Songsong Guo, Chao Liu

引用次数: 0

Abstract

The use of UHPC enables reducing the height of composite slabs, which may decrease the punching shear capacity. This paper investigates the punching shear behavior of steel‐normal concrete‐UHPC composite slabs with experiments and theoretical analyses. Results indicated that a 50 mm UHPC layer makes the nominal punching shear strength increase by 24.91%. Utilizing UHPC and increasing loading area can effectively enhance the punching shear capacity. Besides, theoretical punching shear model proposed based on rigid‐plastic theory can reliably predict the punching shear capacity of composite slabs. The punching shear angle derived from strength theory closely matches the experimental values.

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钢-普通混凝土-超高性能混凝土复合板冲剪性能的实验和理论研究

使用超高性能混凝土可降低复合板的高度，但这可能会降低冲剪能力。本文通过实验和理论分析研究了钢-普通混凝土-超高性能混凝土复合板的冲剪行为。结果表明，50 毫米的 UHPC 层可使名义冲剪强度提高 24.91%。使用 UHPC 和增加加载面积可有效提高冲剪能力。此外，基于刚塑理论提出的冲剪理论模型可以可靠地预测复合材料板的冲剪能力。根据强度理论得出的冲剪角与实验值非常接近。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Structural Concrete CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

5.60

自引率

15.60%

发文量

284

审稿时长

3 months

期刊介绍： Structural Concrete, the official journal of the fib, provides conceptual and procedural guidance in the field of concrete construction, and features peer-reviewed papers, keynote research and industry news covering all aspects of the design, construction, performance in service and demolition of concrete structures. Main topics: design, construction, performance in service, conservation (assessment, maintenance, strengthening) and demolition of concrete structures research about the behaviour of concrete structures development of design methods fib Model Code sustainability of concrete structures.