热对加固混凝土柱循环性能的影响(钢板和碳纤维布加固)

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-06-15 DOI:10.3311/ppci.21806

Seyed Amir Hashemi Amiri, Gholamreza Ghodrati Amiri, Maysam Ghasemi Naghibdehi, M. Afzalirad

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引用次数: 0

摘要

在本研究中，为了保证数值模拟的准确性，对三维钢筋混凝土柱进行了三种状态的数值模拟，包括未加固状态，以及加固钢板和碳纤维布的两种状态。在不同热水平下，对这些柱进行了循环侧向荷载下的温度-位移耦合分析，研究和比较了改造和热水平对柱循环侧向性能的影响。研究结果表明，随着温度的升高，未加固柱、加固钢板柱和加固FRP柱的侧力和能量均增大。这在500°C时更为显著，特别是在用钢板改造的柱中。此外，用钢板改造柱(与FRP板相比)会导致柱在循环横向加载期间的热敏性更大幅度增加。

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The Effects of Heat on the Cyclic Behavior of Retrofitted Concrete Columns (by Steel Plates and CFRP)

In this research, in addition to ensuring the accuracy of the numerical simulations, a 3D reinforced concrete column is numerically modeled in three conditions, including a non-retrofitted state, as well as two states retrofitted with steel plates and CFRP. The coupled temperature-displacement analysis of these columns is conducted under cyclic lateral loading in various heat levels, and the effects of both the retrofits and heat on the cyclic lateral behavior of the columns are studied and compared. According to the results of the study, with temperature rise, both lateral forces and energies increase in the non-retrofitted column, the column retrofitted with steel plates, and the column retrofitted with FRP. This is even more significant at 500°C, particularly in retrofitted columns with steel plates. Besides, retrofitting the columns with steel plates (compared to FRP plates) causes a more substantial increase in the heat sensitivity of the column during cyclic lateral loading.

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来源期刊

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.