Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behaviour and design of composite walls under axial compression
Abstract An extensive investigation on the axial behaviour of composite walls was carried out with the main aim of developing design recommendations. Firstly, in order to investigate the slenderness limit for different steel grades, an experimental programme was conducted comprising six concrete filled composite panels (CF-CPs) with four shear studs symmetrically welded on one steel plate, incorporating both mild steels, high- and ultra-high-strength steels. The second set of experiments included thirteen concrete filled composite walls (CF-CWs), in which different connector types and arrangements were utilised together with mild steels, high- and ultra-high-strength steels. In parallel with the experimental tests, numerical models were developed, involving element deletion and concrete damage properties to simulate concrete crushing. Extensive parametric study was conducted based on the validated models against the test results with detailed discussions. Innovative method (both experimentally and numerically) was adopted to separate the loads carried by exterior steel plates and the infilled concrete to assist the following design recommendations. The validity of the proposed design recommendations was demonstrated through comparisons with the present test and numerical results as well as the data collected in the literature.
Highlights The tested mild steel and high-strength steel CF-CSW specimens possessed satisfactory mechanical performance. Ultra-high-strength steel CF-CSW is not encouraged when utilising the walling system with bolts and studs. The developed numerical models included concrete deletion and unconfined concrete material properties. The vertical slenderness limit and horizontal slenderness limit is 1.3(E/f y ) 0.5 and 1.43(E/f y ) 0.5 respectively. The proposed method can predict the capacity reasonably well compared with JEAC-4618 and AISC N690s1.
Behaviour and design of composite walls under axial compression
Abstract An extensive investigation on the axial behaviour of composite walls was carried out with the main aim of developing design recommendations. Firstly, in order to investigate the slenderness limit for different steel grades, an experimental programme was conducted comprising six concrete filled composite panels (CF-CPs) with four shear studs symmetrically welded on one steel plate, incorporating both mild steels, high- and ultra-high-strength steels. The second set of experiments included thirteen concrete filled composite walls (CF-CWs), in which different connector types and arrangements were utilised together with mild steels, high- and ultra-high-strength steels. In parallel with the experimental tests, numerical models were developed, involving element deletion and concrete damage properties to simulate concrete crushing. Extensive parametric study was conducted based on the validated models against the test results with detailed discussions. Innovative method (both experimentally and numerically) was adopted to separate the loads carried by exterior steel plates and the infilled concrete to assist the following design recommendations. The validity of the proposed design recommendations was demonstrated through comparisons with the present test and numerical results as well as the data collected in the literature.
Highlights The tested mild steel and high-strength steel CF-CSW specimens possessed satisfactory mechanical performance. Ultra-high-strength steel CF-CSW is not encouraged when utilising the walling system with bolts and studs. The developed numerical models included concrete deletion and unconfined concrete material properties. The vertical slenderness limit and horizontal slenderness limit is 1.3(E/f y ) 0.5 and 1.43(E/f y ) 0.5 respectively. The proposed method can predict the capacity reasonably well compared with JEAC-4618 and AISC N690s1.
Behaviour and design of composite walls under axial compression
Mo, Jun (Autor:in) / Uy, Brian (Autor:in) / Li, Dongxu (Autor:in) / Thai, Huu-Tai (Autor:in) / Wang, Youtian (Autor:in)
17.10.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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