Effects of chord compression on OPB fire performance of CHS T-joints: An experimental study

被引：3
|
作者：
Ahmadpour, F. [1 ]
Zeinoddini, M. [1 ]
Rashnooie, R. [1 ]
Mo'tamedi, M. [2 ]
Hosseini, S. A. [3 ]
机构：
[1] KN Toosi Univ Technol, Fac Civil Engn, Tehran, Iran
[2] Islamic Azad Univ, Civil Engn Dept, Parand Branch, Parand, Iran
[3] Malek Ashtar Univ Technol, Fac Pass Def, Tehran, Iran
来源：
THIN-WALLED STRUCTURES | 2023年 / 182卷
关键词：
CHS T-joint; Fire performance; Out-of-plane bending (OPB); Chord compression; Failure mode; TUBULAR K-JOINTS; ELEVATED-TEMPERATURE; RESISTANCE BEHAVIOR; STATIC STRENGTH; CONNECTIONS; PIPES;
D O I：
10.1016/j.tws.2022.110216
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Almost all previous experimental studies on the fire performance of steel circular hollow section (CHS) joints were conducted in the absence of external load in the chord [9-15, 17-19, 21-22, 24, 26-28]. This paper is focused on the chord compression effects on the fire performance of CHS T-joints under out-of-plane bending (OPB). Seven identical small-scale tubular specimens were tested under different combinations of axial compression in the chord, OPB in the brace, and the standard fire. It was found that the chord compression effect on the OPB of CHS T-joints significantly escalates under fire conditions, compared to that at ambient temperature. Dominant failure modes in the specimens tested were local buckling of the chord face around brace/chord intersection, crippling/bulging of the chord sidewalls, and flexural yielding of the brace.
引用
收藏
页数：19
相关论文
共 50 条
  • [1] Experimental study on axial compression property of CHS brace-H section chord T-joints
    Chen, Y. (chenyu78@hqu.edu.cn), 1600, Chinese Society of Civil Engineering (46):
  • [2] Tests of CHS T-joints with convex chord under axial compression
    Feng, Ran
    Chen, Yu
    Wang, Chaoyang
    JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2016, 117 : 139 - 151
  • [3] EXPERIMENTAL INVESTIGATION ON CIRCULAR CFDST CHORD TO CHS BRACE T-JOINTS
    Yang, You-Fu
    Shi, Cong
    Hou, Chao
    PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON STEEL AND ALUMINIUM STRUCTURES (ICSAS19), 2019, : 968 - 978
  • [4] Performance of CHS T-joints in a standard fire test
    Nguyen, M. P.
    Tan, K. H.
    Fung, T. C.
    TUBULAR STRUCTURES XIV, 2012, : 599 - 606
  • [5] An experimental study of structural behaviours of CHS T-joints subjected to brace axial compression in fire condition
    Nguyen, M. P.
    Fung, T. C.
    Tan, K. H.
    TUBULAR STRUCTURES XIII, 2010, : 725 - 732
  • [6] CHORD STRESS FUNCTIONS FOR ULTIMATE STRENGTH OF CHS T-JOINTS
    Kurose, Y.
    Ochi, K.
    STEEL AND ALUMINIUM STRUCTURES, 2016,
  • [7] Design of CHS brace-to-H-shaped chord T-joints under axial compression
    Chen, Yu
    Feng, Ran
    Wei, Lin
    THIN-WALLED STRUCTURES, 2016, 98 : 274 - 284
  • [8] Structural Behavior of CHS T-Joints Subjected to Brace Axial Compression in Fire Conditions
    Tan, K. H.
    Fung, T. C.
    Nguyen, M. P.
    JOURNAL OF STRUCTURAL ENGINEERING, 2013, 139 (01) : 73 - 84
  • [9] Numerical and experimental study on structural behavior of restrained CHS T-joints in transient fire tests
    Zhang, Y.
    Nguyen, M. P.
    Fung, T. C.
    Tan, K. H.
    STRUCTURES, 2023, 48 : 511 - 522
  • [10] Tests of bare and concrete-filled CHS T-joints with concave chord under axial compression
    Chen, Yu
    Feng, Ran
    Wang, Chaoyang
    CONSTRUCTION AND BUILDING MATERIALS, 2015, 93 : 144 - 156
12345