Mechanical Property Evolution of BeamsColumn Joints at Elevated Temperatures

被引：0

作者：

Lu L. ^{[1
,2
]}

Wang S. ^{[3
]}

Wu S. ^{[4
]}

Li K. ^{[3
]}

Shu Q. ^{[1
]}

Yuan G. ^{[1
]}

Yu H. ^{[5
]}

机构：

[1] Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou

[2] Jiangsu Collaborative Innovation Center for Building Energy Saving and Construction Technology, Xuzhou

[3] School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou

[4] Xuzhou Construction Engineering Testing Center Co.，Ltd., Xuzhou

[5] College of Civil Engineering, Tongji University, Shanghai

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2023年 / 51卷 / 04期

关键词：

beam-column joint; elevated temperature; fire experiments; mechanical performance; rotational restraint;

D O I：

10.11908/j.issn.0253-374x.21493

中图分类号：

学科分类号：

摘要：

In order to study the structural behavior of reinforced concrete beam-column joints and the changing rules of the constraints between them at elevated temperatures，thermal-load coupling tests on reinforced concrete frame beams were conducted. Based on the test，the VULCAN program is adopted to conduct the numerical analysis of the fire response of the frame beam subjected to high temperature alone，the beam-column subjected to high temperature at the same time，and the beam-column joint moment-rotation relationship at a constant load. The results show that the end restraint strength of reinforced concrete frame beams decreases with the increase of temperature. The peak value of the rotational angle at the beam-column joint has a certain delay compared to the peak value of the restraint moment. © 2023 Science Press. All rights reserved.

引用

页码：571 / 577

页数：6

共 17 条

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