Experimental and theoretical investigation of the flexural performance of large-span integrated wall panels
ZHAO Liyuan
GAO Zhan
ZHOU Jiayi
CHEN Xilong
GAO Xian
XU Bo
Abstract：Adopting a synergistic load-bearing structure consisting of lipped thin-walled H-section steel studs,galvanized steel sheets,and ultra-high-performance concrete(UHPC)face layers,with self-tapping screws serving as shear connectors and rock wool core with edge sealing to form thermal insulation sandwich.Through flexural performance tests on three full-scale specimens,the mechanical properties of the wall panels were investigated,and formulas for calculating cracking and ultimate bearing capacity were derived based on the plane section assumption.Results indicate that the panel exhibits a clear load transfer path with firm interfa-cial bonding and no delamination.All specimens demonstrated ductile failure characterized by vertical bending cracks,with stable development of mid-span deflection and cracking.The established formulas show good agreement with experimental values and can be applied to practical engineering design.
Keywords：prefabricated buildingultra-high-performance concretelarge-spanintegrated wall panelflexural behaviour
Publication Date：2026-02-25
Online Publishing Date：2026-03-25(First online date of this platform, not the publication date of the document)
Pages：8( 32-38,55 )