Axial Compression Behavior of Steel Angles with Double-Shear Splice Connections in Transmission Towers
Source abstract
Abstract
Structural safety of transmission towers is directly influenced by the behavior of bolted connections at discontinuity joints in the main steel angles. Thus, it is essential to investigate the axial compression behavior of double-shear splice connections of main steel angles. In this study, a total of 10 groups of discontinuous steel angle specimens with double-shear splice connections, comprising eight groups of specimens with the same upper and lower angles and two groups of specimens with different upper and lower angles, were designed and tested in compression. The axial deformation, out-of-plane deflection, and strain at the mid-height of steel angles were measured to analyze the influence of double-shear splice connections on the compression behavior of steel angles. Moreover, comparisons were made among discontinuous steel angles in terms of the ultimate load and the associated deformation to investigate the effects of splice steel ratio, slenderness, bolt spacing, and bolt torque, respectively. Based on the experimental results of steel angles in compression, comparisons with the values calculated using Chinese design codes suggest that present design methods show limited accuracy in calculating the axial compressive load capacity of steel angles with double-shear spliced connections, indicating the necessity for revising the design methods in relevant codes.
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Research context
OpenAlex topics: Structural Load-Bearing Analysis · Structural Engineering and Vibration Analysis · Vibration and Dynamic Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Energy Development Research Institute, China Southern Power Grid, No. 11 Kexiang Road, Science City, Guangzhou 510663, China
State Key Laboratory of Safety and Resilience of Civil Engineering in Mountain Area, Chongqing 400045, China
School of Civil Engineering, Chongqing University, Chongqing 400045, China
Southwest Electric Power Design Institute Co., Ltd., China Power Engineering and Consulting Group, 16 Dongfeng Road, Chenghua District, Chengdu 610021, China
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