Mechanical behavior analysis of LEM-infilled cold-formed steel walls

Abstract

The sustainable development of the engineering structures mainly depends on the environmental- friendly to structural components. This requires the development of sustainable and new materials and structures that would be a worthy alternative for the available. This paper proposed a novel type of cold-formed steel (CFS) shear wall which filling light EPS mortars (LEM) into the space of CFS framing. LEM-infilled CFS walls carry forward the merits of traditional CFS wall, for example lightweight, easy installation, superior earthquake resistance and efficient energy saving. Moreover, employing recycled desulfurization gypsum and EPS in the structural materials reduce environmental pollution. However, the behavior of LEM-infilled CFS wall is not fully explored yet, which results in the low understanding and application of the material around the world. Based on this background, a review of mechanical response tests will contribute to a better awareness. In this paper, three types of mechanical behaviours are discussed including axial compressive behaviour, out-of-plane flexural behaviour, and cyclic behaviour. The previous researches on the mechanical performance of LEM-infilled CFS walls were reviewed. And the typical failure patterns and general results were described and discussed. This work will provide an excellent reference to current practice and future exploration.

Analysis on Shear Resistance of Joint and Structural Mechanical Response of Assembled Composite Beam Joints

“…Such as engineering requirements, structural form, material characteristics, construction conditions, etc. In order to ensure the safety and stability of the assembled composite beams, the characteristics of various connections should be fully understood, follow the corresponding design specifications and construction technology, and select and install them in strict accordance with the design requirements [10]. Strengthening the quality inspection and control is also a crucial link.…”

“…The expansion of this frequency range indicates that the connector can maintain good stability under various working conditions and helps to improve the overall performance of the structure. The formulas for calculating deflection and total displacement of connector are shown in ( 9) and (10).…”

Investigations on interfacial moisture storage and its relation to the mechanical behavior in polymer composites

“…Furthermore, a number of researchers suggested a variety of analytical models based on Fickian and non-Fickian moisture absorption to characterize and predict the moisture absorption behavior in polymer composites. [16][17][18][19][20][21][22][23] In polymer composites, Fickian diffusion has been commonly observed during the early stages of moisture absorption. However, polymer composites have been found to frequently exhibit non-Fickian diffusion in the long-term.…”

“…Furthermore, a number of researchers suggested a variety of analytical models based on Fickian and non‐Fickian moisture absorption to characterize and predict the moisture absorption behavior in polymer composites. [ 16–23 ]…”