Structural Behavior of Construction Joints in a Composite Rigid-Frame Bridge

IF 3.6 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY International Journal of Concrete Structures and Materials Pub Date : 2023-10-23 DOI:10.1186/s40069-023-00614-3

Sanghyeon Cho, Jungho Choi, Heeyoung Lee, Wonseok Chung

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Abstract

Abstract Composite rigid-frame bridges with steel girders have excellent structural performance, but behavioral inconsistency appears at the connection between the steel girder and concrete pier. In addition, composite rigid-frame bridges are challenging to construct owing to the need to connect different materials at the pier. Therefore, this study developed and demonstrated a composite rigid-frame bridge with a construction joint and anchors. The structural performance and composite behavior of the proposed construction joint were investigated by evaluating a direct connection between the girder and concrete prior to casting (Joint A), a plain construction joint (Joint B), and a construction joint with anchors (Joint C). Joints B and C exhibited 16.5% and 46.5% higher ultimate capacities, respectively, than did Joint A. Finite element analysis of Joint C was conducted, and its results were verified against the experimental results. Further, parameter analysis was performed to determine the effects of the steel girder strength and anchor diameter. The results indicated that the proposed construction joint with anchors exhibited excellent structural performance and composite behavior.

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某组合刚构桥施工缝结构性能研究

摘要钢梁组合刚构桥具有优良的结构性能，但在钢梁与混凝土墩的连接处存在行为不一致的问题。此外，由于需要在桥墩处连接不同的材料，复合刚构桥的建造具有挑战性。因此，本研究开发并演示了一种具有施工缝和锚杆的组合刚构桥。通过评估浇筑前梁与混凝土的直接连接(节点a)、平面施工节点(节点B)和带锚的施工节点(节点C)，研究了所提出的施工节点的结构性能和复合性能。节点B和C的极限承载力分别比节点a高16.5%和46.5%。进一步进行了参数分析，确定了钢梁强度和锚杆直径的影响。结果表明，所设计的锚杆施工缝具有良好的结构性能和复合性能。

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来源期刊

International Journal of Concrete Structures and Materials CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

6.30

自引率

5.90%

发文量

审稿时长

13 weeks

期刊介绍： The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. These forums give participants an opportunity to contribute their knowledge for the advancement of society. Topics include, but are not limited to, research results on Properties and performance of concrete and concrete structures Advanced and improved experimental techniques Latest modelling methods Possible improvement and enhancement of concrete properties Structural and microstructural characterization Concrete applications Fiber reinforced concrete technology Concrete waste management.