ANALYSIS OF TWISTING ABOUT UPPER FLANGE OF C-SECTION PURLIN WITH TWO SAG RODS

Wu Qiang; Tong Genshu; Zhang Lei

doi:10.13204/j.gyjz201312003

Volume 43 Issue 12

Dec. 2014

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2013 > 43(12): 21-25

WANG Chenyu, PENG Wenhao, LI Suchao, FANG Qinghe. A CONSTITUTIVE MODEL OF METALLIC RUBBER BEARINGS BASED ON STATISTICAL CONTACT PROPERTIES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 25-30. doi: 10.13204/j.gyjzG21052416

Citation:

Wu Qiang, Tong Genshu, Zhang Lei. ANALYSIS OF TWISTING ABOUT UPPER FLANGE OF C-SECTION PURLIN WITH TWO SAG RODS[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 21-25. doi: 10.13204/j.gyjz201312003

Citation:

Wu Qiang, Tong Genshu, Zhang Lei. ANALYSIS OF TWISTING ABOUT UPPER FLANGE OF C-SECTION PURLIN WITH TWO SAG RODS[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(12): 21-25. doi: 10.13204/j.gyjz201312003

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ANALYSIS OF TWISTING ABOUT UPPER FLANGE OF C-SECTION PURLIN WITH TWO SAG RODS

doi: 10.13204/j.gyjz201312003

1.
Institute of High-Performance Materials and Structures,Zhejiang University,Hangzhou 310058,China

Received Date: 2013-08-04
Publish Date: 2013-12-20

Abstract

Abstract

It was analyzed the stress and deformation of a simple purlin with two sag rods under wind suction，whose roof sheets were connected to the upper flange of the purlin by self-drilled screws; the analytic results were compared with those of FEA. It was found by the analyses that the theory of twisting about upper flange could predict more accurately the lateral deformation of the lower flange，the reaction of the sag rod，and the reaction of the roof sheets close to the non-sag rod zone. There was a maximum compressive stress at the lower flange lip on the section of the sag rod，whose result calculated by EC3 method agreed well with that of ANSYS; there was a maximum tensile stress at the upper flange lip on the section of the sag rod, hence the effect of the distortional deformation must be taken into account. In such case the theory of bending and twisting must be used to calculate the reaction of the sag rod，only then can the positive stress due to the distortional deformation be introduced.
- purlin,
- C-section,
- stress,
- elastic support

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References(3)

References

[2] 童根树, 吴强, 张磊.跨中设拉条 C 形截面简支檩条绕强迫轴的弯曲和扭转[J].工业建筑, 2013, 43(12):12-20.

童根树, 吴强, 张磊.跨中设拉条简支 Z 形檩条绕强迫轴的变曲和扭转[J].工业建筑, 2013, 43(12):1-11.

[3] 童根树, 吴强.Z 形截面檩条强度计算时的下翼缘假想水平荷载[J].工业建筑, 2012, 42(4):136-142.

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