Masters Theses

Keywords and Phrases

Cold-formed steel; Crimp; Crimped beam

Abstract

"This work covers the behavior of crimped cold-formed steel C-section beams under flexural loading. The specific beam shape that was tested was 600S162-54. The crimps were placed in the flange and web of the beam to curve the beam. Three crimp sizes were tested: 0.5 degree, 1.5 degree, and 3.0 degree. In construction practice, the company placed a reinforcing steel band that overlapped the crimped areas to restore strength. These various crimp degrees were tested to evaluate how much strength, if any, was lost. The reinforcing steel band was tested simultaneously with the beam to evaluate if its presence significantly increased the strength and ductility of the beam. The beams were tested with the crimps on both the compression flange and the tension flange to cover updraft and other upward vertical loads. Straight beams without crimps were used as the control case, and both crimped and control specimens were evaluated for their moment capacity, deflection limits, and the effective moment of inertia of the beam.

After testing, tables comparing the crimped beams' moment and deflection capacity and their effective moment of inertia compared to straight beams were created. Based on the series of flexural tests, the deeper the crimp geometry extended into the compression zone of the beam, the greater the loss of moment capacity, and the lower the effective moment of inertia. Tables 5.1 through 5.5 along with Equations 2 through 7 are meant to aid in the safe design of crimped cold-formed steel beams. Testing Standards such as ASTM A370 and the SSMA Cold-Formed Steel Flexural Members were followed, but with minor deviations because of the unique geometry of the crimped beams."--Abstract, page iii.

Advisor(s)

Baur, Stuart Werner, 1965-

Committee Member(s)

LaBoube, Roger A.
Birman, V. (Victor)

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2015

Pagination

ix, 64 pages

Note about bibliography

Includes bibliographical references (page 63).

Rights

© 2015 Jeffrey Devon Smith, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Steel -- Cold working
Strains and stresses
Flexure
Building, Iron and steel

Thesis Number

T 10697

Electronic OCLC #

913515773

Download

Share

 
COinS