Axial Compression Behavior of a New Type of Prefabricated Concrete Sandwich Wall Panel

4th International Conference on Advanced Engineering and Technology

Qun, Xie^1 ; Shuai, Wang^1 ; Chun, Liu^2

School of Civil Engineering and Architecture, University of Jinan, Jinan

250022, China^1

Kunshan Eco-building Technology Co, Ltd, Kunshan, Jiangsu

215300, China^2

关键词: Axial compression behavior;    Axial compressive load;    Internal insulation;    Load-bearing capacity;    Sandwich wall panels;    Structural behaviors;    Structural elements;    Threedimensional (3-d);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/317/1/012063/pdf
DOI  :  10.1088/1757-899X/317/1/012063

来源: IOP

【 摘 要 】

A novel type of prefabricated concrete sandwich wall panel which could be used as a load-bearing structural element in buildings has been presented in this paper. Compared with the traditional sandwich panels, there are several typical characteristics for this wall system, including core columns confined by spiral stirrup along the cross-section of panel with 600mm spacing, precast foamed concrete block between two structural layers as internal insulation part, and a three-dimensional (3D) steel wire skeleton in each layer which is composed of two vertical steel wire meshes connected by horizontally short steel bar. All steel segments in the panel are automatically prefabricated in factory and then are assembled to form steel system in site. In order to investigate the structural behavior of this wall panel, two full-scale panels have been experimentally studied under axial compressive load. The test results show that the wall panel presents good load-bearing capacity and integral stiffness without out-of-plane flexural failure. Compared to the panel with planar steel wire mesh in concrete layer, the panel with 3D steel wire skeleton presents higher strength and better rigidity even in the condition of same steel ratio in panels which verifies that the 3D steel skeleton could greatly enhance the structural behavior of sandwich panel.