Study on effects of mudsill and infilled wallboard on response of steel frame under curvature surface deformation

Xie, Wei and Xia, Junwu and Zheng, Yuying and Wang, Qiufen and Chang, Hongfei (2019) Study on effects of mudsill and infilled wallboard on response of steel frame under curvature surface deformation. IOP Conference Series: Earth and Environmental Science, 295 (4). 042047. ISSN 1755-1315 (

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The structural performance of steel frames with novel lightweight composite infilled wallboard is experimentally and numerically investigated under the curvature surface deformation. This study compares the mechanical behavior for the open-frame, the closed-frame with mudsill and the closed-frame with infilled wallboard, through experiment and finite element analysis, under the positive and negative curvature surface deformations respectively. The structural responses such as basement counterforce, additional strains at different key locations and the effects of mudsill and infilled wallboard are evaluated. It has been found that the steel frames with the new composite infilled wallboard can considerably increase the stiffness of the structures in resisting surface deformation and re-distribute the loads amongst the beam and column members in the frame. The force transmission effect of the mudsill accelerated the changes in the additional strain at column bottom. Frame beam is the main component that bears the curvature surface deformation. Mudsill has a consistent stress pattern with the frame beam and can significantly influence additional strain of the frame beam due to its stress sharing effect. The infilled wallboard is connected with the column-beam members and thereby influences the additional strain of the frame column significantly.