Abstract
The paper presents a study on the behaviour of corrugated web steel beams with and without web openings. Examined steel beams consist of two flanges and a thin triangularly corrugated web, connected by automatic welding. In the literature, the web opening problem in steel beams was dealt with mostly for steel beams with plane webs and research of the effect from opening in a corrugated web was found out to be very limited. A finite element analysis in ABAQUS software was carried out to investigate the effect of openings in corrugated web. A number of beams FE models comprise of web openings with different sizes and positions were developed. The effect on beam bending capacity of circular opening in corrugated web is studied for various openings positions and sizes also as corrugation density. The stress concentration factors are obtained near the circular opening in cases of its location in zone of pure bending and in zone of transverse bending of the beam. Recommendations are given for practical design of corrugated web beams weakened by circular openings.
Highlights
Corrugated web beams are fabricated girders with a thin-walled corrugated web and flanges made of plate steel, hollow profiles, electric welded pipes or reinforced concrete elements
Stress concentration factors and deflection increase factors versus web opening size relationships for different corrugation densities are given in figures 4, 5 and 6
According to the results of FE analysis, the greatest stress concentration occurs on the contour of the opening in areas located at an angle of about 450 to the longitudinal axis of the beam in the case of transverse bending and in areas located at an angle of 900 in the case of pure bending which corresponds to the existing data on this problem
Summary
Corrugated web beams are fabricated girders with a thin-walled corrugated web and flanges made of plate steel, hollow profiles, electric welded pipes or reinforced concrete elements. The present paper deals with the effect of web openings on the transverse and bending load carrying capacity of steel beams with triangularly corrugated webs. Romeijn, Sarkhosh and Hoop [3] present a basic parametric study on steel girders with trapezoidal corrugated webs having cut outs. In recent years there have been several publications on a similar topic from Malaysia by De’nan and Musnira in 2012 [5], by Krishnarani and Krishna in 2016 [6] and by De’nan, Hasan and Keong in 2017 [7] In these papers, beams with a triangular corrugated and simultaneously perforated web are considered. Cases with web openings were examined in terms of the effect of varying web opening size and corrugation density on stresses near the opening
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