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Corrugated Web in Beams Introduction

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Questions and Answers

What is a major advantage of using beams with corrugated web over traditional rolled and welded profiles?

Lower resistance to bending

Larger radius of inertia

Increased weight per unit length

Higher coefficient of utilization of material (correct)

Why did the location of folds in the webs of plate girders cause welding of stiffeners in every place of concentrated load occurrence?

To reduce bending stresses

To minimize material usage

To increase the stiffness of the web

To avoid buckling under concentrated loads (correct)

How did the automation of production in the 80s and 90s enable the widespread use of plate girders with corrugated web?

Reduced the weight of plate girders

Increased the efficiency of material utilization

Improved the technology of welding (correct)

Allowed for more complex web designs

What formula is used to calculate the reduced modulus of shear in Timoshenko beams?

Gred = Gf * A Signup and view all the answers

In the context of plate girders, what does the reduced coefficient of shear (kred) estimate?

The change in elasticity coefficient of shear Signup and view all the answers

For analyzing wavy web influence on displacements, what equation is used to calculate the resistance of the web?

VR = 0.58 * c * hw * tw * fy Signup and view all the answers

What is the main advantage of plate girders with corrugated web compared to plate girders with flat webs and trusses?

Reduced material by about 20% Signup and view all the answers

In the context of beam production with a sinusoidal wave web, what is the chord length of the produced web?

77.5 mm Signup and view all the answers

What is the function of the station of welding (7) in the production process of girders with a corrugated web?

Joining the metal plates together Signup and view all the answers

How does the presence of a corrugated web influence the overall stiffness of plate girders?

Increases flexibility at the expense of stiffness Signup and view all the answers