@ARTICLE{Blum_Artur_Numerical_2000,
 author={Blum, Artur and Kubiak, Tomasz and Niezgodziński, Tadeusz and Orłoś, Zbigniew and Woliński, Jacek},
 volume={vol. 47},
 number={No 4},
 journal={Archive of Mechanical Engineering},
 pages={325-331},
 howpublished={online},
 year={2000},
 publisher={Polish Academy of Sciences, Committee on Machine Building},
 abstract={The essential problem in the process of technological prestressing is the imperfection of web sheets. These elements made of relatively large sheets (about 2 meters high) show significant imperfections of the shape and flatness. Initial deflections have the value equal several times the web thickness, but they tend to grow in the process of straightening. Such a case can particularly occur when stresses that compress the shield of the web sheet between diaphragms are close to the critical buckling stress. Experiments were carried out in a real object. The box girder having I I .Om span and 1.8 m in its height was prestressed by welding the straps on the bottom flange and on the web in the vicinity of the bottom llange. Results of performed investigations are the subject of the paper.},
 type={Article},
 title={Numerical and experimental investigations of web sheets imperfection changes in the process of technological prestressing of girders},
 URL={http://journals.pan.pl/Content/125385/PDF/5_MECHANICAL_47_2000_4_Blum_Numerical.pdf},
 keywords={box girder, technological prestressing, imperfection of web sheets},
}