EXPERIMENTAL STUDY ON PULL-OUT PROPERTIES OF SELF-TAPPING STAINLESS STEEL SCREWS TO FIX ALUMINUM SHEETS

XIN Zhiyong; PAN Buxin; WANG Dayang; ZHANG Yongshan; ZHU Yong

doi:10.13204/j.gyjzG20040803

Volume 51 Issue 1

Apr. 2021

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XIN Zhiyong, PAN Buxin, WANG Dayang, ZHANG Yongshan, ZHU Yong. EXPERIMENTAL STUDY ON PULL-OUT PROPERTIES OF SELF-TAPPING STAINLESS STEEL SCREWS TO FIX ALUMINUM SHEETS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 100-109. doi: 10.13204/j.gyjzG20040803

Citation:

XIN Zhiyong, PAN Buxin, WANG Dayang, ZHANG Yongshan, ZHU Yong. EXPERIMENTAL STUDY ON PULL-OUT PROPERTIES OF SELF-TAPPING STAINLESS STEEL SCREWS TO FIX ALUMINUM SHEETS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 100-109. doi: 10.13204/j.gyjzG20040803

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EXPERIMENTAL STUDY ON PULL-OUT PROPERTIES OF SELF-TAPPING STAINLESS STEEL SCREWS TO FIX ALUMINUM SHEETS

doi: 10.13204/j.gyjzG20040803

1. Zhuhai Envete Engineering Testing Co., Ltd., Zhuhai 519120, China;
2. School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;
3. Guangdong Metal Enclosure Structure Engineering Technology Research Center, Guangzhou 510006, China

Received Date: 2020-08-03
Available Online: 2021-04-30

Abstract

Abstract

Large numbers of self-tapping screws are used to fix aluminum sheets in the metal roofing system where the pull-out accidents of screw connections were reported frequently subjected to the wind uplift loads. In order to study the pull-out characteristics and presented a calculation method of self-tapping stainless steel screws to connect aluminum sheets, tensile tests of 198 connected specimens with different drilling methods, thicknesses of aluminum sheets, pitch and major diameters were conducted. Based on the results, the influences of different factors on the pull-out characteristics of self-tapping screws fixed aluminum sheets. The results indicated that the pull-out bearing capacity increased with the increase of aluminum sheet thickness, pitch and major diameters. The pull-out bearing capacity of specimens for carbon steel screw was better than that for stainless steel screw. The specimens with small pitch was susceptible of construction, which affected the pull-out bearing capacity. The test results were compared with the calculated results from the formulas recommended by codes of home and abroad. The formula for pull-out bearing capacity of self-tapping screws to fix aluminum sheets was modified. The results calculated by the modified formula fitted well with the test results.
- carbon steel screw,
- self-tapping,
- aluminum sheet,
- pull-out bearing capacity,
- calculating equation

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References(17)

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