Review of Design Flexural Strengths of Steel–Concrete Composite Beams for Building Structures

International Journal of Concrete Structures and Materials

Table 4 Design results calculated from PSDM: exterior beams under positive bending (kN m).

f _ck (MPa)	F _yk (MPa)	AISC 360-10		KSSC–KCI		Eurocode 4		JSCE 2009
f _ck (MPa)	F _yk (MPa)	M _pl	M ⁽¹⁾_d	β	M ⁽¹⁾_d	β	M ⁽¹⁾_d	M ⁽¹⁾_d
21	235	1082	974	0.901	907	–⁽²⁾	1004	939
	315	1377	1239	0.866	1089	–⁽²⁾	1265	1185
	355	1514	1363	0.854	1181	–⁽⁴⁾	–⁽⁴⁾	1302
	450	1826	1643	–⁽⁴⁾	–⁽⁴⁾	–⁽⁴⁾	–⁽⁴⁾	1570
	650	2443	2199	–⁽⁴⁾	–⁽⁴⁾	–⁽³⁾	–⁽³⁾	–⁽³⁾
30	235	1164	1048	0.949	1014	–⁽²⁾	1073	1001
	315	1468	1321	0.911	1237	–⁽²⁾	1364	1274
	355	1619	1457	0.894	1334	–⁽²⁾	1499	1403
	450	1967	1770	0.866	1556	0.861	1555	1693
	650	2631	2368	–⁽⁴⁾	–⁽⁴⁾	–⁽³⁾	–⁽³⁾	–⁽³⁾

⁽¹⁾ M _d = ϕM _pl for AISC 360-10 (or KBC 2014), M _pl or βM _pl for Eurocode 4, βM _pl for KSSC–KCI 2014, and M _pl/γ _b for JSCE 2009.
⁽²⁾For Eurocode 4, β shall be applied for high strength steel of F _yk = 420 and 460 MPa.
⁽³⁾For Eurocode 4 and JSCE 2009, the plastic stress distribution method shall not be applied for F _yk = 650 MPa.
⁽⁴⁾The use of the plastic stress distribution method is restrained for D _p/D _t ≤ 0.4 for Eurocode 4 and D _p/D _t ≤ 0.42 for KSSC–KCI.