超高性能混凝土梁柱结构连接节点全尺寸试验性能研究

IF 6.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment Pub Date : 2025-04-01 DOI:10.1016/j.dibe.2025.100682

Krairerk Aiamsri , Teerasak Yaowarat , Suksun Horpibulsuk , Apichat Suddeepong , Apinun Buritatum , Artit Udomchai , Kirati Nitichote

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引用次数: 0

摘要

本研究探讨了超高性能混凝土（UHPC）在预制梁柱节点中的应用，以改善结构性能。研究的节点包括充分和不充分的加固条件（强和弱节点），由UHPC和变形钢筋构成。坚固的节点使钢筋在设计弯矩下达到屈服强度，在使用条件下有效地传递荷载并保持结构的完整性。这些详细的节点表现出延性破坏行为，这是钢筋混凝土设计中所期望的特征。相比之下，脆弱的节点经历了过早和脆性破坏，强调了适当的细节和钢筋长度的重要性。最后，制定了一个实用的设计方案，以确定UHPC连接中适当的钢筋长度，以确保结构的完整性和安全性。总体而言，将UHPC集成到预制混凝土接缝中显著提高了粘结性能，改善了荷载传递机制，并有助于提高弹性和可靠的施工实践。

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Performance of connection joints of beam-column structure using Ultra-high-performance concrete under full-scale tests

This study examines the application of Ultra-High Performance Concrete (UHPC) in precast beam-column joints to improve structural performance. The studied joints included both adequately and inadequately reinforced conditions (strong and weak joints), constructed using UHPC and deformed rebars. The strong joints allowed the rebars to reach their yield strength under the design bending moment, effectively transferring loads and maintaining structural integrity during service conditions. These well-detailed joints exhibited ductile failure behavior, which is a desired characteristic in reinforced concrete design. In contrast, the weak joints experienced premature and brittle failures, underscoring the importance of proper detailing and reinforcement length. Finally, a practical design scheme was developed to determine the appropriate rebar lengths in UHPC connections to ensure structural integrity and safety. Overall, the integration of UHPC into precast concrete joints significantly enhanced bond performance, improved load transfer mechanisms, and contributed to more resilient and reliable construction practices.

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.