将后安装封头钢筋嵌入扩大端部的灌浆孔中的发展情况

IF 1.6 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY Journal of Advanced Concrete Technology Pub Date : 2024-01-24 DOI:10.3151/jact.22.62
Hassane Ousalem, Gin Horiuchi, Akitoshi Hamada, Hiroto Takatsu, Yuki Idosako, Hiroyuki Masuda, Yuki Hiroshima
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引用次数: 0

摘要

为了确保高质量的后安装锚固件具有相对较短的锚固长度和足够的抗拉/抗剪能力,开发了一种在钻孔末端扩大直径的锚固方法。锚杆配有顶板,并使用无收缩高强度水泥基灌浆料固定在扩大的孔中。进行了拉出和剪切初步试验,以研究这种锚固在混凝土中的行为并评估其强度。此外,还提出了一种基于日本复合结构设计建议的评估方法。所有测试锚栓的评估拉拔和剪切能力都被设计为通过钢屈服失效,确保了测试结果有足够的安全系数,而一些锚栓的评估拉拔和剪切能力则被设计为通过混凝土锥体破裂失效,因此应降低其评估拉拔和剪切能力。
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Development of Post-installed Headed Bars Embedded into Grouted Holes with Enlarged Ends

To secure good quality post-installed anchors with a relatively short anchorage length and sufficient pull-out/shear resistance, an anchoring method with enlarged diameter at the end of drilled holes has been developed. Anchors were provided with head plates and fixed into the enlarged holes using non-shrinkage high-strength cementitious grout. Pull-out and shear preliminary tests were conducted to investigate the behavior and evaluate the strength of such anchors set in concrete. Furthermore, an evaluation method, based on the Japanese recommendations for design of composite constructions, was proposed. The evaluated pullout and shear capacities of all tested anchors designed to fail by steel yielding ensured sufficient safety margin as to test results, whereas those of some anchors designed to fail by concrete cone breakout should be reduced.

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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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