Advances in Materials Science and Engineering / 2015 / Article / Tab 4

Research Article

Design and Model Test of a Modularized Prefabricated Steel Frame Structure with Inclined Braces

Table 4

Comparison of mechanical performance under three load states.

Horizontal load24 kN59 kN105 kN

Specimen 1There are small yielding zones in the connections between web members and chord membersStrain gages 25 and 29 yield; the ends of web members yieldNumber 20 web member buckles, and story drift angles are 1/101 and 1/116

Specimen 2There are small yielding zones in the connection between web members and chord membersStrain gages 28 and 29 yield; the ends of web members yieldNumber 20 web member buckles, and story drift angles are 1/102 and 1/115

Finite element analysis using line elementsThe maximum stress 177 MPa occurred on the columnThe maximum stress of web members is 360 MPaThe axial average stress of numbers 19 and 20 web members reaches design strength, and story drift angles are 1/169 and 1/170

Equivalent stress ratio using design formulasNumbers 19 and 20 members are 0.46 and 0.45Numbers 19 and 20 members are 0.99 and 1.01Numbers 19 and 20 members are 1.14 and 1.24