| Titre : | In-plane elastic buckling of shallow parabolic arches under an external load and temperature changes (2013) |
| Auteurs : | Jianguo Cai, Auteur ; Yixiang Xu, Auteur ; Jian Feng, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of structural engineering (Vol. 138 N° 11, Novembre 2012) |
| Article en page(s) : | pp. 1300-1309 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Tags : | Arch Steel Buckling Stability Temperature gradients field |
| Résumé : | This paper studies the in-plane stability of rotationally restrained shallow arches subjected to a vertical uniform load and temperature changes below 100°C. The virtual work principle method was used to establish the nonlinear equilibrium and buckling equations. Analytical solutions for the nonlinear in-plane symmetric snap-through and asymmetric bifurcation critical loads are obtained. Then the effects of the uniform temperature field and temperature gradients on the in-plane stability for arches are studied. The influence of temperature variations on the critical loads for both the symmetric snap-through and asymmetric bifurcation modes was significant. The critical loads increase with an increase of the uniform temperature field and a decrease of temperature gradients. Furthermore, the effect of temperature changes on the critical load increases with the span-rise ratio m of arches. Increasing the stiffness of the rotational springs will increase the effect of the uniform temperature field but reduce the effect of the temperature gradients. |
| ISSN : | 0733-9445 |
| En ligne : | http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000570 |
