有预制预墙和无预制预墙的全尺寸蹲式剪力墙的剪力行为

IF 1.6 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY Journal of Advanced Concrete Technology Pub Date : 2024-02-28 DOI:10.3151/jact.22.86
Eissa Fathalla, Bertrand Ringeisen, Marc Lenges, Boyan Mihaylov
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引用次数: 0

摘要

钢筋混凝土剪力墙通常用于建筑物,以抵抗风和地震作用产生的侧向荷载。剪力墙通常采用现浇或预制两种方式,其中预制方案可实现较高的施工速度和质量控制。同时,预制解决方案的主要挑战在于确保相邻墙体之间的适当连接,以及墙体在地基中的锚固。结合预制和现浇混凝土的混合结构系统可以提供两种方法的优点,如更快的施工速度、更好的质量控制、更高的结构性能和耐久性。本研究的重点是通过全尺寸实验测试,研究蹲式混合剪力墙的剪切性能。试验包括一堵传统的现浇墙和一堵带有预制墙系统(两堵预制墙)和现浇混凝土核心筒的混合墙。通过详细测量和基于运动学的建模,全面了解了试件的行为。结果表明,混合施工方法不会影响墙体的刚度,但会导致剪切强度略有降低。研究还表明,三参数运动学理论可用于预测测试墙体的剪切强度和主要变形成分。
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Shear Behaviour of Full-Scale Squat Shear Walls with and without Precast Pre-walls

Reinforced concrete shear walls are commonly used in buildings to resist lateral loads due to wind and seismic action. They are typically either cast-in-place or precast, with the latter solution used to achieve high construction speed and quality control. At the same time, the main challenge with precast solutions is to ensure appropriate connections between the adjacent walls, as well as the anchorage of the walls in the foundations. A hybrid structural system combining precast and cast-in-place concrete can provide the advantages of both methods such as faster construction, better quality control, improved structural performance, and durability. This study focuses on investigating the shear behaviour of squat hybrid shear walls through full-scale experimental testing. The tests include one conventional cast-in-place wall and one hybrid wall with a pre-wall system (two precast walls) and cast-in-place concrete core. Detailed measurements and kinematic-based modelling are used to develop comprehensive understanding of the behaviour of the test specimens. It is shown that the hybrid method of construction does not affect the stiffness of the walls and results in a slight reduction of shear strength. It is also shown that the three-parameter kinematic theory can be used to predict the shear strength and key deformation components of the tested walls.

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来源期刊
Journal of Advanced Concrete Technology
Journal of Advanced Concrete Technology 工程技术-材料科学:综合
CiteScore
3.70
自引率
10.00%
发文量
45
审稿时长
3.5 months
期刊介绍: JACT is fast. Only 5 to 7 months from submission to publishing thanks to electronic file exchange between you, the reviewers and the editors. JACT is high quality. Peer-reviewed by internationally renowned experts who return review comments to ensure the highest possible quality. JACT is transparent. The status of your manuscript from submission to publishing can be viewed on our website, greatly reducing the frustration of being kept in the dark, possibly for over a year in the case of some journals. JACT is cost-effective. Submission and subscription are free of charge . Full-text PDF files are available for the authors to open at their web sites. Scope: *Materials: -Material properties -Fresh concrete -Hardened concrete -High performance concrete -Development of new materials -Fiber reinforcement *Maintenance and Rehabilitation: -Durability and repair -Strengthening/Rehabilitation -LCC for concrete structures -Environmant conscious materials *Structures: -Design and construction of RC and PC Structures -Seismic design -Safety against environmental disasters -Failure mechanism and non-linear analysis/modeling -Composite and mixed structures *Other: -Monitoring -Aesthetics of concrete structures -Other concrete related topics
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