Strength enhancement of timber beams using steel plates – review and experimental tests

IF 0.8 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD Drewno Pub Date : 2016-01-01 DOI:10.12841/WOOD.1644-3985.150.06

T. Nowak, J. Jasieńko, Ewa Kotwica, S. Krzosek

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引用次数: 13

Abstract

This paper reviews selected historical and modern methods of strengthening timber structures using steel plates. The results of experimental testing are also presented, emphasizing that the differences in the results obtained were a result of the application of different strengthening methods, test specimens, etc. The need to develop design guidelines related to reinforcement methods is also emphasized. Appropriate reinforcement depends on the application, arrangement and ratio of the reinforcement. The increase in the load-bearing capacity of the beams reinforced by bonded or glued-in plates in comparison to the unreinforced elements was found to be similar to the models reinforced with fibre reinforced polymer (FRP). The increase in stiffness was, however, higher than in the case of the FRP reinforcement. Due to the influence of temperature and humidity on the strength and deformation of the bonding if glued-in or bonded plates are used, additional strengthening of the connection using a mechanical connector is recommended. These connectors also protect against rapid destruction in the case of fire.

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用钢板增强木梁的强度。审查和试验试验

本文回顾了历史上和现代采用钢板加固木结构的方法。文中还介绍了试验测试结果，强调结果的差异是应用不同的强化方法、试样等因素造成的。还强调需要制定与加固方法有关的设计准则。适当的配筋取决于配筋的应用、布置和配筋比例。与未加筋构件相比，用粘结板或胶合板加固的梁的承载能力的增加与用纤维增强聚合物(FRP)加固的模型相似。然而，刚度的增加高于FRP加固的情况。如果使用胶接板或粘接板，由于温度和湿度对连接强度和变形的影响，建议使用机械连接器对连接进行额外的加固。这些连接器还可以防止在火灾中迅速损坏。

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来源期刊

Drewno MATERIALS SCIENCE, PAPER & WOOD-

CiteScore

1.10

自引率

12.50%

发文量

审稿时长

>12 weeks

期刊介绍： Wood. Research papers. Reports. Announcements" ("Drewno") is an international scientific journal that publishes original results of innovatory basic and applied research concerning technological, technical, economic and ecological issues important for the wood science and forest-based industries, including their environment, and interesting to the international recipients. "Drewno" is an Open Access biannual journal. Aims and scope: wood science: anatomy, biology, chemistry, physics wood mechanical and chemical technology, inter alia, sawmilling, composite wood products, wooden construction, furniture making, wood pulp, paper making material engineering, biocomposites, nanocomposites material management environmental protection, safety of the processes, products and working stations biotechnology bioenergy, biofuels forestry: harvesting and wood quality wood-based industries economics The Editorial Board of the journal especially welcomes articles concerning increase in wood resources (wood mobilisation); innovative composites and lignocellulosic materials; new trends in the protection, modification and finishing of wood; biorefining of raw wood material; "green" building; new technologies of wood waste recycling; sustainable development; innovation management; and business networks.