Paper Title:
Top Beam Flange Fracture Behavior in Steel Frame Connections under Gravity Loads
  Abstract

Top beam flange fractures were observed in the post-earthquake steel frame building inspections. Both seismic loads and gravity loads have effect on top beam flange fractures. The objective was to quantify the variation of stress intensity factor to weld root flaw sizes on top of the beam flange at column face in steel frame connections under gravity loads. Finite-element analyses were used to study fracture toughness in welded beam-column connections. Investigations of fracture behavior mainly focused on the standard pre-Northridge connection geometry. Finite element analysis was performed using the ANSYS computer program. Stress intensity factor was calculated through a J-integral approach. The parametric study was conducted to quantify elastic fracture demands as a function of beam geometries. Results show that the distributions of stress intensity factor tend to be even across the flange width under gravity loads. The thickness of beam web has little effect on stress intensity factors. Stress intensity factor increases nearly linear with the increase of flaw size, and it increases with the increase of depth of beam and width of beam. Stress intensity factor reduces with the increase of thickness of beam flange.

  Info
Periodical
Key Engineering Materials (Volumes 348-349)
Edited by
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
Pages
381-384
DOI
10.4028/www.scientific.net/KEM.348-349.381
Citation
H. B. Liu, C. H. Zhai, Y. S. Shao, L. L. Xie, "Top Beam Flange Fracture Behavior in Steel Frame Connections under Gravity Loads", Key Engineering Materials, Vols. 348-349, pp. 381-384, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Cheol Min Yang, Young Moon Kim, Nag Ho Ko, Dong Pyo Hong
Abstract:This paper proposes a new semi-rigid detail used high-strength bolts for use in earthquake resistant structures. These specimens were...
2081
Authors: Yi Sheng Su, Qi Liang Li, Yi Bin Yang, Xiang Hua Chen
Abstract:Based on the ANSYS, castellated lightweight steel portal frames are modeled to analysis the stress destruction process and stress...
1267
Authors: Zhi Ping Yin, Jiong Zhang, Jin Guo, Qi Qing Huang
Abstract:The finite element software ANSYS was employed to create a finite element model of the cracked wing beam integrated structure, and the stress...
101
Authors: Yan Xia Zhang, Quan Xi Ye, Lu Yao Wang
Chapter 12: Monitoring and Control of Structures
Abstract:Two types of beam Strengthening-Bolt spliced connection were analyzed by using ABAQUS. The results showed that Beam Strengthen- Bolt Spliced...
3390
Authors: Chun Ping Tang, Liang Liang Zhang
Chapter 2: Bridge Engineering
Abstract:Non-linear numerical simulation is done on A-type super high pier by using finite element analysis software ANSYS, obtaining the node stress...
1329